A kind of total system of copper-contained sludge and wiring boardTechnical field
The present invention relates to metal recovery fields, in particular to the integrated treatment system of a kind of copper-contained sludge and wiring boardSystem.
Background technology
With the quickening that electronic and electrical equipment updates, cause the average life of product shorter and shorter.China is everyYear has the white goods such as 15,000,000 or so colour TV air-conditionings to scrap, and up to ten million portion's mobile phones are eliminated, and electron wastes year increases5%~8%.China needs the waste printed circuit board disposed at 500,000 tons or more every year.Printed wiring board mainly by metal, haveMachine object and oxide composition, wherein metal≤50%, including Cu, Fe, Ni, Sn, Pb, Al, Zn etc..
For the heavy metal wastewater thereby that the industries such as processing plating, manufacture, printing and dyeing generate, correlative link declaration form position or enterprise are per average annual meetingGenerate a large amount of copper-contained sludges.Under field conditions (factors), the heavy metal in the copper-contained sludge arbitrarily stacked is likely to dissolve out, and again intoEnter water body or soil and causes secondary pollution.In addition, the content of valuable metal copper is far above the mining grade of copper mine, tool in sludgeThere is very high utility value.
It can be seen that valuable metal rich content in waste printed circuit board and copper-contained sludge, arbitrary disposition is bound to cause resourceSignificant wastage.
The common methods of valuable metal are heat treating process and method of chemical treatment in recycling waste printed circuit board at present.Heat treating process packetInclude burning method and pyrolysis method.The heat treating process of industrial practical application has shaft furnace, blast furnace, reverberatory furnace and rotary kiln incineration method.These methods make organic matter in wiring board directly burn using metallurgical furnace high temperature, and valuable metal melting, inorganic non-metallic substance is madeSlag is detached, and base bullion is obtained.Method of chemical treatment is needed by extraction, precipitation, displacement filtering, distillation removal of impurities and electrolysisEtc. programs, technological process is long and the problems such as still needing to handle again there are leachate and residue secondary pollution, matrix.
The recovery method of valuable metal mainly has the acid-hatching of young eggs, ammonia leaching process and high melt method in copper-contained sludge at present.AcidleachThe main process of method is the valuable metal leached using sulfuric acid, hydrochloric acid or nitric acid etc. in copper-contained sludge.Acid-hatching of young eggs leaching efficiencyHeight, but leached simultaneously with various metals and be difficult to detach, and severe corrosion to equipment, the defect of operating environment difference.Ammonia leaching processIt is general that complex reaction is occurred as copper, the nickel in leaching agent, with sludge using ammonia spirit, leachate is obtained, recycling is valuableMetal.Ammonia leaching process has selectivity well to valuable metals such as copper, nickel, but to device high standard of sealing property, leachate is easily wavedHair is big to environmental hazard.Sludge is mainly heated to 1300 DEG C or so by high melt method in blast furnace, supplying reducing agent andSlag former makes valuable metal melting and reducing, oxide slag making obtain blister copper, and method energy consumption is higher.
Invention content
The main purpose of the present invention is to provide the total systems of a kind of copper-contained sludge and wiring board, existing to solveMetal recovery problem of high cost in copper-contained sludge and wiring board in technology.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of copper-contained sludge and wiring board it is comprehensiveProcessing system is closed, which includes：Copper-contained sludge pelletizing unit, copper-contained sludge pelletizing unit include and prilling granulatorConnected copper-contained sludge feeding mechanism and the first waste active carbon feeding mechanism；Wiring board supply unit；And side-blown melting unit,Side-blown melting unit includes side-blown smelting furnace, and side-blown smelting furnace has feed inlet and fuel-side mouthpiece, prilling granulator and wiring boardSupply unit is connected with feed inlet.
Further, above-mentioned side-blown melting unit includes waste mineral oil feeding mechanism and oxygen-enriched air feeding mechanism, abandoned mineObject oil feeding mechanism and oxygen-enriched air feeding mechanism are connected with fuel-side mouthpiece.
Further, above-mentioned side-blown melting unit further includes slag former feeding mechanism, slag former feeding mechanism and feed inletIt is connected, preferably slag former feeding mechanism is iron slag feeding mechanism.
Further, above-mentioned side-blown melting unit further includes flux feeding mechanism, and flux feeding mechanism is connected with feed inlet.
Further, above-mentioned side-blown melting unit further includes concurrent heating source supply device, concurrent heating source supply device and fuel-sideMouthpiece is connected, and preferably concurrent heating source supply device includes the feeding mechanism of the second waste active carbon powder, coal dust and oxygen-enriched air.
Further, above-mentioned side-blown smelting furnace includes：Bottom wall, bottom wall are divided into interconnected smelting zone and settling section；The first side wall, the first side wall are connect with bottom wall, and fuel-side mouthpiece is arranged on the first side wall of smelting zone, is preferably provided at firstThe lower half of side wall；Roof；Roof is connect with the first side wall, and bottom wall, the first side wall and roof form furnace chamber, and feed inlet setting existsOn the roof of smelting zone；And second sidewall, second sidewall are connected and upwardly extend with roof, second sidewall surrounds and furnace chamber phaseExhanst gas outlet even, and settling section is arranged with feed inlet in the both sides of exhanst gas outlet.
Further, the roof height of above-mentioned smelting zone is more than the roof height of settling section, and side-blown smelting furnace further includes：TheOne side wall, the first side wall are arranged between feed inlet and exhanst gas outlet, and the first side wall is connected and extends downwardly with roof, the first sideThere is interval between wall and bottom wall；And second side wall；Second side wall is arranged between settling section and exhanst gas outlet, the second side wallIt is connected with roof and extends downwardly, there is interval between the second side wall and bottom wall.
Further, reduction charge door is additionally provided on the roof of above-mentioned settling section, side-blown melting unit further includes reductionAgent feeding mechanism, reducing agent feeding mechanism are connected with reduction charge door, and preferably reducing agent feeding mechanism supplies for third waste active carbonAnswer device, coke supply device or lump coal feeding mechanism.
Further, Secondary Air entrance is set in above-mentioned the first side wall and second sidewall.
Further, above-mentioned settling section is additionally provided with heating device, and preferably heating device is electrode, and electrode is arranged in roofOn.
Further, above-mentioned total system further includes fume treatment unit, and fume treatment unit includes burner, combustionBurner is connected with exhanst gas outlet.
Further, said burner is exported with combustion tail gas, and fume treatment unit further includes：Waste-heat recovery device,There is waste-heat recovery device combustion tail gas entrance and cooling offgas outlet, combustion tail gas entrance to be connected with combustion tail gas outlet；It is de-Bioxin device, Tuo bioxin devices have cooling gas inlet and the outlet of adsorption cleaning gas, cooling gas inlet and cooling tailGas outlet is connected；Desulfurizer, desulfurizer have adsorption cleaning gas entrance and evacuation port, adsorption cleaning gas entrance net with absorptionChange gas outlet to be connected.
Further, above-mentioned wiring board supply unit includes：Detin welder, detin welder carry out detin to wiring boardWeldering is handled；And breaker, breaker are connected with detin welder to carry out break process to the wiring board of detin postwelding,Breaker is connected with the feed inlet of side-blown melting unit.
It applies the technical scheme of the present invention, is carried respectively using copper-contained sludge feeding mechanism and the first waste active carbon feeding mechanismFor copper-contained sludge and waste active carbon, the two is then subjected to mixing granulation, waste active carbon is made as reducing agent and part incendiary agentSide-blown melting is carried out in side-blown melting unit with wiring board after grain, to reduce the Energy Consumption Cost of side-blown melting；In addition,Wiring board organic compound combustion during side-blown melting generates heat, and organic matter can be further used as the combustion of side-blown meltingMaterial to not only complete detaching for copper metal in copper-contained sludge and wiring board and other impurity, but also takes full advantage of wiring boardMiddle organic matter thermal energy, further reduced the energy consumption cost of side-blown melting.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide further understanding of the present invention, and of the invention showsMeaning property embodiment and its explanation are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 shows the structure diagram for the total system that a kind of preferred embodiment according to the present invention provides；
Fig. 2 shows the structural schematic diagrams of the side-blown smelting furnace provided according to another preferred embodiment of the invention；
Fig. 3 shows the implementing procedure signal for the integrated conduct method that a kind of preferred embodiment according to the present invention providesFigure；.
Wherein, above-mentioned attached drawing includes the following drawings label：
10, copper-contained sludge pelletizing unit；
20, wiring board supply unit；21, detin welder；22, breaker；
30, side-blown melting unit；01, feed inlet；02, fuel-side mouthpiece；03, exhanst gas outlet；04, charge door is restored；05、Secondary Air entrance；31, side-blown smelting furnace；311, bottom wall；312, the first side wall；313, roof；314, second sidewall；315, firstSide wall；316, the second side wall；317, heating device；32, waste mineral oil feeding mechanism；33, oxygen-enriched air feeding mechanism；34, it makesSlag agent feeding mechanism；35, flux feeding mechanism；36, concurrent heating source supply device；37, reducing agent feeding mechanism；
40, fume treatment unit；41, burner；42, waste-heat recovery device；43, Tuo bioxin device；44, desulfurization fillsIt sets.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phaseMutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As recorded in the application background technology, metal recovery is of high cost in copper-contained sludge and wiring board in the prior art,In order to solve this problem, this application provides the total systems of a kind of copper-contained sludge and wiring board, as shown in Figure 1, this is comprehensiveIt includes copper-contained sludge pelletizing unit 10, wiring board supply unit 20 and side-blown melting unit 30 to close processing system, and copper-contained sludge is madeGrain unit 10 includes the copper-contained sludge feeding mechanism being connected with prilling granulator and the first waste active carbon feeding mechanism；Side-blown melting listMember 30 includes side-blown smelting furnace 31, and the side-blown smelting furnace 31 has feed inlet 01 and fuel-side mouthpiece 02, prilling granulator and lineRoad Plate supplying unit 20 is connected with feed inlet 01.
The application provides copper-contained sludge using copper-contained sludge feeding mechanism and the first waste active carbon feeding mechanism and gives up respectivelyActivated carbon, then carries out mixing granulation by the two, and waste active carbon exists after granulation with wiring board as reducing agent and part incendiary agentSide-blown melting unit 30 carries out side-blown melting, to reduce the Energy Consumption Cost of side-blown melting；In addition, wiring board is side-blownOrganic compound combustion generates heat during melting, and organic matter can be further used as the fuel of side-blown melting, to both completeCopper metal in copper-contained sludge and wiring board is detached with other impurity, and takes full advantage of organic matter thermal energy in wiring board,It further reduced the energy consumption cost of side-blown melting.
It is preferably as shown in Figure 1, above-mentioned side-blown in order to further decrease the cost of metal recovery in copper-contained sludge and wiring boardMelting unit 30 includes waste mineral oil feeding mechanism 32 and oxygen-enriched air feeding mechanism 33, waste mineral oil feeding mechanism 32 and oxygen-enrichedAir supply device 33 is connected with fuel-side mouthpiece 02.Waste mineral oil is supplied as fuel using waste mineral oil feeding mechanism 32Natural gas commonly used in the prior art is substituted, energy consumption cost is reduced.
In order to improve separative efficiency, preferably as shown in Figure 1, above-mentioned side-blown melting unit 30 further includes slag former feeding mechanism34, slag former feeding mechanism 34 is connected with feed inlet 01, and preferably slag former feeding mechanism 34 is iron slag feeding mechanism.It utilizesSlag former feeding mechanism 34 provides slag former and improves slag discharge efficiency, in addition when selecting iron slag feeding mechanism, furtherThe cost of slag former is saved.
In addition, in order to improve smelting efficiency, preferably as shown in Figure 1, above-mentioned side-blown melting unit 30 further includes flux supplyDevice 35, flux feeding mechanism 35 are connected with feed inlet 01.It is provided to side-blown smelting furnace 31 using above-mentioned flux feeding mechanism 35Quartz and lime stone are as flux.
In a kind of preferred embodiment of the application, in order to ensure the stability of side-blown smelting temperature, preferably such as Fig. 1 institutesShow, above-mentioned side-blown melting unit 30 further includes concurrent heating source supply device 36, concurrent heating source supply device 36 and 02 phase of fuel-side mouthpieceConnect, preferably concurrent heating source supply device 36 includes the feeding mechanism of the second waste active carbon powder, coal dust and oxygen-enriched air, to be carried for meltingFor additional heat.
In the application another preferred embodiment, preferably as shown in Fig. 2, above-mentioned side-blown smelting furnace 31 includes bottom wall311, the first side wall 312, roof 313 and second sidewall 314, bottom wall 311 are divided into interconnected smelting zone and settling section；The first side wall 312 is connect with bottom wall 311, and fuel-side mouthpiece 02 is arranged on the first side wall 312 of smelting zone, is preferably provided atThe lower half of one side wall 312；Roof 313 is connect with the first side wall 312, and bottom wall 311, the first side wall 312 and roof 313 form stoveChamber, feed inlet 01 are arranged on the roof 313 of smelting zone；Second sidewall 314 is connected and upwardly extends with roof 313, the second sideWall 314 surrounds the exhanst gas outlet 03 being connected with furnace chamber, and settling section is arranged with feed inlet 01 in the both sides of exhanst gas outlet 03.
Fuel is passed through by fuel-side mouthpiece 02 in the molten bath of furnace chamber lower part so that copper-contained sludge particle and wiring board are moltenOxidation occurs for refining area and reduction reaction obtains melting liquid and flue gas, and melting liquid flows into settling section by smelting zone, and melting liquid is being clarifiedArea is separated into copper liquid and slag after clarification, and copper liquid is flowed out from the copper outflux of bottom, and slag is flowed out from the slag notch on top, flue gasIt is escaped from side-blown smelting furnace 31 by the exhanst gas outlet 03 on top.
In order to improve smelting zone and the respective functional effect of settling section, preferably as shown in Fig. 2, the roof 313 of smelting zone is highFor degree more than 313 height of roof of settling section, side-blown smelting furnace 31 further includes the first side wall 315 and the second side wall 316, the first side wall315 are arranged between feed inlet 01 and exhanst gas outlet 03, and the first side wall 315 is connected and extends downwardly with roof 313, the first side wallThere is interval between 315 and bottom wall 311；Second side wall 316 is arranged between settling section and exhanst gas outlet 03, the second side wall 316It is connected and extends downwardly with roof 313, there is interval between the second side wall 316 and bottom wall 311.
In the application another preferred embodiment, as shown in Fig. 2, being additionally provided on the roof 313 of above-mentioned settling sectionCharge door 04 is restored, above-mentioned side-blown melting unit 30 further includes reducing agent feeding mechanism 37, reducing agent feeding mechanism 37 and reductionCharge door 04 is connected, and preferably reducing agent feeding mechanism 37 is that third waste active carbon feeding mechanism, coke supply device or lump coal supplyAnswer device.Using third waste active carbon feeding mechanism, coke supply device or lump coal feeding mechanism supply waste active carbon, coke orLump coal further restores the melting liquid in settling section, and the copper in slag is further restored, and reduces Copper in Slag, improvesThe yield of copper.
Organic matter is relatively more in the flue gas generated due to the side-blown melting of the application, is imitated to improve utilizing for organic matterRate, preferably as shown in Fig. 2, Secondary Air entrance 05 is arranged in above-mentioned the first side wall 312 and second sidewall 314.Secondary Air entrance 05Optimum position is the first half of the first side wall 312 on the first side wall 312.It is empty to above-mentioned furnace chamber top by Secondary Air entrance 05Between and exhanst gas outlet 03 provide air make the smoke combustion in exhanst gas outlet 03.By the air of offer, make organic in flue gasThe combustible components such as object, carbon monoxide fully burn, and improve safety and environmental protection performance, and combustible component burning can be into furnace chamberConcurrent heating further decreases energy consumption.
In order to ensure the separating effect of settling section, preferably as shown in Fig. 2, settling section is additionally provided with heating device 317, preferablyHeating device 317 is electrode, and above-mentioned electrode is arranged on roof 313.
After above-mentioned processing, environmental pollutants may be contained in the flue gas of generation, it is preferably as shown in Figure 1, above-mentioned comprehensiveIt further includes fume treatment unit 40 to close processing system, and fume treatment unit 40 includes burner 41, burner 41 and exhanst gas outlet03 is connected.
The flue gas that refining generates is blowed and fused using 41 offside of burner to be burnt to obtain combustion tail gas, with to therein organicThe combustible components such as object, carbon monoxide are further processed.
For the ingredient in flue gas caused by the application, preferably as shown in Figure 1, said burner 41 has combustion tail gasOutlet, fume treatment unit 40 further include waste-heat recovery device 42, Tuo bioxin device 43 and desulfurizer 44, waste heat recovery dressSetting 42, there is combustion tail gas entrance and cooling offgas outlet, combustion tail gas entrance to be connected with combustion tail gas outlet；Tuo bioxin fillsSetting 43, there is cooling gas inlet and the outlet of adsorption cleaning gas, cooling gas inlet to be connected with cooling offgas outlet；Desulfurizer44 there is adsorption cleaning gas entrance and evacuation port, adsorption cleaning gas entrance to be connected with the outlet of adsorption cleaning gas.Utilize waste heat recoveryDevice 42 carries out waste heat recovery to combustion tail gas, on the one hand reduces the temperature of combustion tail gas, on the other hand improves burning tailThe utilizing status of the heat of gas, the heat of recycling can be used for generating electricity；Flue gas Zhong bis- Evil are removed using Tuo bioxin device 43English；The sulphur in flue gas is removed using desulfurizer 44, flue gas is made to reach emission request.
In the application another preferred embodiment, preferably as shown in Figure 1, above-mentioned wiring board supply unit 20 includes de-Soldering apparatus 21 and breaker 22, detin welder 21 carry out detin weldering processing to wiring board；Breaker 22 is welded with detinDevice 21 is connected to carry out break process, the feed inlet of breaker 22 and side-blown melting unit 30 to the wiring board of detin postwelding01 is connected.Detin weldering processing is carried out to wiring board using detin welder 21, improves the rate of recovery of tin metal, and avoid SillimBelong to the influence to copper recovery；Using breaker 22 to the break process of wiring board, wiring board is improved in side-blown meltingIn heating surface area, and then accelerate side-blown smelting efficiency.
In order to make those skilled in the art more easily implement the total system of the application, present invention also provides oneThe integrated conduct method of kind copper-contained sludge and wiring board, as shown in figure 3, the integrated conduct method includes：By copper-contained sludge and give upActivated carbon carries out mixing granulation, obtains copper-contained sludge particle；Copper-contained sludge particle and wiring board are subjected to side-blown melting.
The application using waste active carbon as after reducing agent and part incendiary agent, with copper-contained sludge mixing granulation with wiring boardSide-blown melting is carried out, to reduce the Energy Consumption Cost of side-blown melting；In addition, wiring board has during side-blown meltingThe burning of machine object generates heat, and organic matter can be further used as the fuel of side-blown melting, to both complete copper-contained sludge and lineThe separation of copper metal and other impurity in the plate of road, and organic matter thermal energy in wiring board is taken full advantage of, it further reduced sideBlow and fuse the energy consumption cost of refining.
Above-mentioned mixing granulation process can also include copper-contained sludge being dried the pretreatment process of the routine such as homogeneous, i.e.,Copper-contained sludge is dried, carries out mixing granulation with charcoal non activated again after the pre-treatment of homogeneous, the above process is conventional process,Details are not described herein.
In a kind of preferred embodiment of the application, in order to improve the rate of recovery of copper in copper-contained sludge, preferably copper-contained sludgeIn particle, waste active carbon is 10%~80% of the weight of total copper in copper-contained sludge and waste printed circuit board.
In order to further decrease the cost of metal recovery in copper-contained sludge and wiring board, preferably side-blown fusion process is using uselessMineral oil and oxygen-enriched air are fuel, and the temperature of more preferable side-blown melting is 1150~1400 DEG C.It is substituted using waste mineral oil existingHave common natural gas in technology, reduce energy consumption cost, and the dosage of non-mineral oil can according to the temperature of side-blown melting comeIt determines, makes it maintain side-blown smelting temperature at 1150~1400 DEG C, to ensure the rate of recovery of metal.
In order to improve separative efficiency, preferably as shown in figure 3, slag former is added in side-blown fusion process, in order to save intoThis, further preferred slag former is iron slag, for example iron slag is pyrite cinder, smelting residue, electro-smelting waste residueDeng.
In addition, in order to improve smelting efficiency, it is further excellent preferably as shown in figure 3, adding flux in side-blown fusion processIt includes quartz/or lime stone to select flux, and enter stove weight of material 10%~70% that weight is side-blown melting is added in flux.OnIt includes copper-contained sludge, waste printed circuit board, waste active carbon and the flux for entering side-blown converter to state into stove material.
In a kind of preferred embodiment of the application, in order to ensure the stability of side-blown smelting temperature, preferably side-blown moltenDuring refining additional heat is provided for melting using waste active carbon powder, coal dust and oxygen-enriched air as supplement fuel.
In the application another preferred embodiment, above-mentioned side-blown fusion process carries out in side-blown smelting furnace 31, such asShown in Fig. 2, side-blown smelting furnace 31 includes bottom wall 311, the first side wall 312, roof 313 and second sidewall 314, and bottom wall 311 is drawnIt is divided into interconnected smelting zone and settling section, copper-contained sludge particle and wiring board occur oxidation and reduction reaction in smelting zone and obtainTo melting liquid, melting liquid flows into settling section by smelting zone, and melting liquid is separated into copper liquid and slag in settling section after clarification；FirstSide wall 312 is connect with bottom wall 311, is provided with fuel-side mouthpiece 02 on the first side wall 312 of smelting zone, the side-blown mouth of preferred fuel 02It is arranged in the lower half of the first side wall 312；Roof 313 is connect with the first side wall 312, bottom wall 311, the first side wall 312 and roof313 form furnace chambers, be provided on the roof 313 of smelting zone feed inlet 01, copper-contained sludge particle and wiring board by feed inlet 01 intoEnter in furnace chamber；Second sidewall 314 is connected and upwardly extends with roof 313, and second sidewall 314 surrounds the flue gas being connected with furnace chamber and goes outMouth 03, and settling section is arranged with feed inlet 01 in the both sides of exhanst gas outlet 03.
Fuel is passed through by fuel-side mouthpiece 02 in the molten bath of furnace chamber lower part so that copper-contained sludge particle and wiring board are moltenOxidation occurs for refining area and reduction reaction obtains melting liquid and flue gas, and melting liquid flows into settling section by smelting zone, and melting liquid is being clarifiedArea is separated into copper liquid and slag after clarification, and copper stream is flowed out from the copper outflux of bottom, and slag is flowed out from the slag notch on top, flue gasIt is escaped from side-blown smelting furnace 31 by the exhanst gas outlet 03 on top.
In order to improve smelting zone and the respective functional effect of settling section, preferably as shown in Fig. 2, the roof 313 of smelting zone is highFor degree more than 313 height of roof of settling section, side-blown smelting furnace 31 further includes the first side wall 315 and the second side wall 316, the first side wall315 are arranged between feed inlet 01 and exhanst gas outlet 03, and the first side wall 315 is connected and extends downwardly with roof 313, the first side wallThere is interval between 315 and bottom wall 311；Second side wall 316 is arranged between settling section and exhanst gas outlet 03, the second side wall 316It is connected and extends downwardly with roof 313, there is interval between the second side wall 316 and bottom wall 311.
In the application another preferred embodiment, as shown in Fig. 2, being additionally provided on the roof 313 of above-mentioned settling sectionCharge door 04 is restored, above-mentioned integrated conduct method further includes that waste active carbon, coke are added into settling section by restoring charge door 04Charcoal or lump coal.The melting liquid in settling section is further restored using waste active carbon, coke or lump coal, it will be in slagCopper further restores, and reduces Copper in Slag, improves the yield of copper.
Organic matter is relatively more in the flue gas generated due to the side-blown melting of the application, is imitated to improve utilizing for organic matterRate, preferably as shown in Fig. 2, Secondary Air entrance 05 is arranged in above-mentioned second sidewall 314, which further includes by twoSecondary wind entrance 05 provides air to exhanst gas outlet 03 makes the smoke combustion in exhanst gas outlet 03.By the air of offer, make flue gasIn the combustible components such as organic matter, carbon monoxide fully burn, improve safety and environmental protection performance, and combustible component burning can be withThe concurrent heating into furnace chamber, further decreases energy consumption.
In order to ensure the separating effect of settling section, preferably above-mentioned integrated conduct method further include melting liquid to settling section intoThe process of row heating.
After above-mentioned processing, environmental pollutants may be contained in the flue gas of generation, it is preferably as shown in figure 3, above-mentioned comprehensiveClose processing method further include offside blow and fuse refining generate flue gas burnt to obtain the process of combustion tail gas.With to therein organicThe combustible components such as object, carbon monoxide are further processed.
For the ingredient in flue gas caused by the application, preferably as shown in figure 3, above-mentioned integrated conduct method further includes pairCombustion tail gas carries out the process of waste heat recovery, the processing of Tuo bioxin and desulfurization process successively.Waste heat is carried out to combustion tail gas to returnIt receives, on the one hand reduces the temperature of combustion tail gas, on the other hand improve the utilizing status of the heat of combustion tail gas, the heat of recyclingAmount can be used for generating electricity；Tuo bioxin processing removing flue gas Zhong bioxin；Desulfurization process removes the sulphur in flue gas, and flue gas is made to reachTo emission request.The specific implementation method of the above-mentioned processing of Tuo bioxin and desulfurization process can refer to the prior art, such asBioxin is removed by the way of quenching, activated carbon adsorption bioxin, details are not described herein.
In the application another preferred embodiment, as shown in figure 3, before carrying out side-blown melting to wiring board, onState integrated conduct method further include successively to wiring board carry out detin weldering processing and break process process, obtain grain size be 20~The wiring board of 70mm.Detin weldering processing is carried out to wiring board, improves the rate of recovery of tin metal, and avoid tin metal to copper metalThe influence of recycling；To the break process of wiring board, heating surface area of the wiring board in side-blown melting is improved, and then accelerate side-blownSmelting efficiency.
Below with reference to embodiment and comparative example, the advantageous effect of above-mentioned technical proposal is further illustrated.
Embodiment 1
Copper-contained sludge through it is dry to it is aqueous~40%, then pre- homogenizing, then by after drying copper-contained sludge and useless activityCharcoal mixing granulation obtains copper-contained sludge particle.Waste printed circuit board detin first obtains waste printed circuit board after detin, and it is broken to be then fed into shearingIt is crushed in broken machine, obtains the wiring board that grain size is about 50mm.Broken wiring board and copper-contained sludge particle, pyrite cinder,After quartz dispensing, it is added in side-blown converter.Wherein, the weight for controlling waste active carbon is total weight of copper in copper-contained sludge and wiring board30%；Pyrite cinder dosage is into the 15% of stove inventory；Quartz dosage is into the 15% of stove inventory.It is oxygen-enrichedAir (oxygen concentration 50~60%) and waste mineral oil pass through in the branched lance ejection for being immersed in molten bath to the molten bath of side-blown converter.
Enter stove material and fall on weld pool surface, redox reaction, the organic matter vigorous combustion in waste printed circuit board occurs.Abandoned mineObject oil and Air combustion with oxygen enrichment, heat is provided for melting, and it is 1300 DEG C~1350 DEG C to control side-blown smelting temperature.In materialReduction reaction occurs for the metal oxides such as copper, nickel, generates metal, pyrite cinder and quartz slag making, forms slag phase, wherein uselessActivated carbon is as reducing agent.
After molten metal and slag are clarified in the settling section of side-blown converter, it is separated into copper liquid and slag.Copper stream of the copper liquid from bottomOutlet outflow, slag are flowed out from the slag notch on top.
Side-blown furnace sidewall is equipped with Secondary Air entrance, and side-blown interior flue gas contains unburned complete CO and organic matter, side-blownIt burns with Secondary Air in stove upper space.
Side-blown kiln gas carried out successively after combustion chambers burn, to combustion tail gas waste heat recovery, the processing of de- bioxin andDesulfurization process is discharged after up to standard.
Embodiment 2
Copper-contained sludge through it is dry to it is aqueous~40%, then pre- homogenizing, then by after drying copper-contained sludge and useless activityCharcoal mixing granulation obtains copper-contained sludge particle.Waste printed circuit board detin first obtains waste printed circuit board after detin, and it is broken to be then fed into shearingIt is crushed in broken machine, obtains the wiring board that grain size is about 40~70mm.Broken wiring board is burnt with copper-contained sludge particle, pyriteAfter slag, quartz dispensing, it is added in side-blown converter.Wherein, the weight for controlling waste active carbon is total copper in copper-contained sludge and wiring boardThe 80% of weight；Pyrite cinder dosage is into the 15% of stove inventory；Quartz dosage is into the 15% of stove inventory.Oxygen-enriched air (oxygen concentration 50~60%) and waste mineral oil pass through the molten of the branched lance ejection for being immersed in molten bath to side-blown converterIn pond.
Enter stove material and fall on weld pool surface, redox reaction, the organic matter vigorous combustion in waste printed circuit board occurs.Abandoned mineObject oil and Air combustion with oxygen enrichment, heat is provided for melting, and it is 1150 DEG C~1200 DEG C to control side-blown smelting temperature.In materialReduction reaction occurs for the metal oxides such as copper, nickel, generates metal, pyrite cinder and quartz slag making, forms slag phase, wherein uselessActivated carbon is as reducing agent.
After molten metal and slag are clarified in the settling section of side-blown converter, it is separated into copper liquid and slag.Copper stream of the copper liquid from bottomOutlet outflow, slag are flowed out from the slag notch on top.
Side-blown furnace sidewall is equipped with Secondary Air entrance, and side-blown interior flue gas contains unburned complete CO and organic matter, side-blownIt burns with Secondary Air in stove upper space.
Side-blown kiln gas carried out successively after combustion chambers burn, to combustion tail gas waste heat recovery, the processing of de- bioxin andDesulfurization process is discharged after up to standard.
Embodiment 3
Copper-contained sludge through it is dry to it is aqueous~40%, then pre- homogenizing, then by after drying copper-contained sludge and useless activityCharcoal mixing granulation obtains copper-contained sludge particle.Waste printed circuit board detin first obtains waste printed circuit board after detin, and it is broken to be then fed into shearingIt is crushed in broken machine, obtains the wiring board that grain size is about 20~50mm.Broken wiring board is burnt with copper-contained sludge particle, pyriteAfter slag, quartz dispensing, it is added in side-blown converter.Wherein, the weight for controlling waste active carbon is total copper in copper-contained sludge and wiring boardThe 10% of weight；Pyrite cinder dosage is into the 15% of stove inventory；Quartz dosage is into the 15% of stove inventory.Oxygen-enriched air (oxygen concentration 50~60%) and waste mineral oil pass through the molten of the branched lance ejection for being immersed in molten bath to side-blown converterIn pond.
Enter stove material and fall on weld pool surface, redox reaction, the organic matter vigorous combustion in waste printed circuit board occurs.Abandoned mineObject oil and Air combustion with oxygen enrichment, heat is provided for melting, and it is 1350 DEG C~1400 DEG C to control side-blown smelting temperature.In materialReduction reaction occurs for the metal oxides such as copper, nickel, generates metal, pyrite cinder and quartz slag making, forms slag phase, wherein uselessActivated carbon is as reducing agent.
After molten metal and slag are clarified in the settling section of side-blown converter, it is separated into copper liquid and slag.Copper stream of the copper liquid from bottomOutlet outflow, slag are flowed out from the slag notch on top.
Side-blown furnace sidewall is equipped with Secondary Air entrance, and side-blown interior flue gas contains unburned complete CO and organic matter, side-blownIt burns with Secondary Air in stove upper space.
Side-blown kiln gas carried out successively after combustion chambers burn, to combustion tail gas waste heat recovery, the processing of de- bioxin andDesulfurization process is discharged after up to standard.
It can be seen from the above description that the above embodiments of the present invention realize following technique effect：
The application provides copper-contained sludge using copper-contained sludge feeding mechanism and the first waste active carbon feeding mechanism and gives up respectivelyActivated carbon, then carries out mixing granulation by the two, and waste active carbon exists after granulation with wiring board as reducing agent and part incendiary agentSide-blown melting unit carries out side-blown melting, to reduce the Energy Consumption Cost of side-blown melting；In addition, wiring board is side-blown moltenOrganic compound combustion generates heat during refining, and organic matter can be further used as the fuel of side-blown melting, to both completeCopper metal in copper-contained sludge and wiring board is detached with other impurity, and takes full advantage of organic matter thermal energy in wiring board, intoOne step reduces the energy consumption cost of side-blown melting.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this fieldFor art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repairChange, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.