Barite association aluminium ore refining techniqueTechnical field
The invention belongs to byproduct refining technique technical field in barite preparation process, is related to barite association aluminium ore and carriesSweetening process.
Background technology
Association aluminium mineral can be sometimes run into natural barite ore deposit recovery process, and containing a variety of in barite depositMineralogical composition, by taking the barite deposit of Suizhou as an example, its chemical analysis of mineral result is：BaSO4 94.78%, acid-soluble material 2.1%, Si0.72%th, organic carbon 0.56%, Ca 0.43%, Fe 0.12%, Al 0.10%, Mg 0.17%.Chemical industry barium sulfate preparation processIn, substantial amounts of waste residue can be usually produced, these waste residues contain abundant aluminium element silicon, are carried out if without effective processingIt is not only a kind of serious burden to local environment if discharge, and the economic interests of its loss are also quite huge, andExisting production technology only carries out simply removing acid treatment for such waste residue just discharges, it is clear that is irrational processing method；Aluminium element silicon can carry out benefit conversion, form auxiliary production product by effective extraction in association aluminium ore and waste residue.
Domestic patent database disclosed some similar barium sulfate waste residue method of comprehensive utilization and wall filling in recent yearsMaterial technology is reported：
【Application number】ZL2015106494160,【Title】Barium sulfate waste residue method of comprehensive utilization and wall filler,【It is openNumber】CN105236783A, a kind of barium sulfate waste residue method of comprehensive utilization and wall filler are disclosed, including to producing sulfuric acidSintering deposit, homobium in waste residue produced by barium are peeled off, and waste residue is sorted according to the difference of each component density, recoveryThe complete barite of its unreacted and coal simultaneously melt down re-using, wherein the barite component barium sulfate content reclaimed can be up to 80%More than, remaining residue prepares the energy-saving filling materials for wall body with radiation proof function after harmless treatment --- bubbleFoam concrete building block, but utilization of this method for useful element in waste residue is more superficial.
The content of the invention
A kind of technique of present invention offer is simple, utilization rate is high, the barite association aluminium ore refining technique of Green Chemistry, solvesThe problems such as pollution of the traditional handicraft carbon monoxide to air, waste of waste residue.
Barite association aluminium ore refining technique of the present invention, including aluminium ore is taken, the refinement of pure aluminum,
Step 1：Add carbon dust to obtaining the waste residue after barium sulfate in barite and carry out high-temperature process, chemical equationFor：
SiO2+2C=Si（Slightly）+2CO
Step 2：Isolated thick silicon, carbon monoxide, molten state alundum (Al2O3), chemical equation are：
2Al(OH)3=Al2O3+3H2O
Step 3：Energization processing is carried out to molten state alundum (Al2O3), can obtain pure aluminum and oxygen, chemical equation is：
2Al2O3=4Al+3O2
Step 4：Oxygen obtained by step 3 is passed through in the carbon monoxide obtained by step 2, burning is fully reactedTo carbon dioxide.
The high-temperature process of the step 1 is 1000 DEG C -2000 DEG C, and adds ice crystal.Thick silicon is solid-state in step 2,Carbon monoxide is gaseous state, and the alundum (Al2O3) of molten state is liquid, and three-phase is easily separated.
The method that the present invention uses high-temperature process, molten state alundum (Al2O3) is obtained, be powered and obtain pure aluminum and oxygen, willOxygen is passed through in the carbon monoxide obtained by step 2 and obtains carbon dioxide, is passed through calcium hydroxide and can absorb carbon dioxide.Fully profitWith available resources in waste residue, so as to the Solid state fermentation cost for the company of having saved, advantageously produced in company, generate a systemRow concomitant output, certain benefit, the present invention even more Green Chemistry, environmentally safe, fanout free region, using simple can be producedRaw material, there is the advantages of technique is simple, treatment effeciency is high, cheap.
Brief description of the drawings
Fig. 1 is the aluminium ore refining technique flow chart of the present invention.
Embodiment
With reference to specific drawings and examples, the invention will be further described.
Example 1
As shown in figure 1, a kind of barite association aluminium ore refining technique, including aluminium ore is taken, the refinement of pure aluminum,
Step 1：Add carbon dust to obtaining the waste residue after barium sulfate in barite and carry out 1000 DEG C of high-temperature process, chemical reactionEquation is：
SiO2+2C=Si（Slightly）+2CO；
Step 2：Isolated thick silicon, carbon monoxide, molten state alundum (Al2O3), chemical equation are：
2Al(OH)3=Al2O3+3H2O
Step 3：Energization processing is carried out to molten state alundum (Al2O3), can obtain pure aluminum and oxygen, chemical equation is：
2Al2O3=4Al+3O2
Step 4：Oxygen obtained by step 3 is passed through in the carbon monoxide obtained by step 2, burning is fully reactedTo carbon dioxide.
Example 2
As shown in figure 1, a kind of barite association aluminium ore refining technique, including aluminium ore is taken, the refinement of pure aluminum,
Step 1：Add carbon dust to obtaining the waste residue after barium sulfate in barite and carry out 1800 DEG C of high-temperature process, chemical reactionEquation is：
SiO2+2C=Si（Slightly）+2CO；
Step 2：Isolated thick silicon, carbon monoxide, molten state alundum (Al2O3), chemical equation are：
2Al(OH)3=Al2O3+3H2O
Step 3：Energization processing is carried out to molten state alundum (Al2O3), can obtain pure aluminum and oxygen, chemical equation is：
2Al2O3=4Al+3O2
Step 4：Oxygen obtained by step 3 is passed through in the carbon monoxide obtained by step 2, burning is fully reactedTo carbon dioxide.