A kind of Efficient bentonite and preparation method thereofTechnical field
The present invention relates to bentonite ore deep process technology field, more particularly to a kind of Efficient bentonite and preparation method thereof.
Background technology
In order to meet the demand of swelling native produce of the market to high-quality, at present, except producing the readings of national regulations φ 600≥30（Mud yield >=16.0）Swelling native produce outside, research and development and production with more high viscosity, the swelling local products of higher mud yieldProduct are very urgent, and produce this product, and product quality characteristics key is that rheological characteristic will get well, and keep touching for bentonite slurryBecome, rheological characteristic；Addition high molecular polymer that can not be excessive and form polymer mud.
Prior art is compound by adding polyacrylamide, cellulose, modified starch and bentonite, products obtained therefrom rheologyProperty it is poor, mud outward appearance is as a form of gel serious, and mud draws glutinous silk, and polymer mud characteristic is presented.
The content of the invention
Poor for rheological characteristic existing for existing bentonite slurry, outward appearance is as a form of gel serious, and has the problems such as drawing sticks silk, this hairIt is bright that a kind of Efficient bentonite and preparation method thereof is provided.
To achieve the above object of the invention, the embodiment of the present invention employs following technical scheme：
A kind of Efficient bentonite, including following raw material components：Modified sodium bentonite, acrylic homopolymer, propose viscous drop filterLose agent, rheology stabilizer, the modified sodium bentonite and acrylic homopolymer, carry viscous fluid loss additive, rheology stabilizerMass ratio is 100：0.1-0.5：0.2-1:0.1-0.3；Wherein, the raw material components of the modified sodium bentonite are raw ore swellingThe mass ratio of soil, sodium agent, ion modification auxiliary agent, the raw ore bentonite and sodium agent, ion modification auxiliary agent is 100:4-6:0.1-0.5。
Relative to prior art, after Efficient bentonite slurrying provided by the invention, viscosity is high, and rheological characteristic is good, shows without glutinous silkAs non-gelling phenomenon, in the uniform liquid of flowing.
Further, present invention also offers the preparation method of the Efficient bentonite.The preparation method, including at least withLower step：
（1）By modified sodium bentonite and acrylic homopolymer, viscous fluid loss additive, rheology stabilizer progress mixing treatment are put forward,Obtain mixed material；
（2）Described mixed material is subjected to milling processing, obtains Efficient bentonite.
Relative to prior art, the preparation method of Efficient bentonite provided by the invention, technique is simple, easy to operate, peaceLoopful is protected.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present inventionIt is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used toLimit the present invention.
The embodiment of the present invention provides a kind of Efficient bentonite, the Efficient bentonite, including following raw material components：Modified sodiumBase bentonite, acrylic homopolymer, carry viscous fluid loss additive, rheology stabilizer, the modified sodium bentonite and acrylic compoundsHomopolymer, carry viscous fluid loss additive, rheology stabilizer mass ratio be 100：0.1-0.5：0.2-1:0.1-0.3；Wherein, it is described to changeProperty sodium bentonite raw material components for raw ore bentonite, sodium agent, ion modification auxiliary agent, the raw ore bentonite and sodiumAgent, the mass ratio of ion modification auxiliary agent are 100:4-6:0.1-0.5.
Specifically, the dosage of acrylic homopolymer is the 0.1%-0.5% of modified sodium bentonite quality, is mixed with bentoniteImprove rheological property after matching somebody with somebody.
Preferably, acrylic homopolymer includes PAA（Polyacrylic acid）.
Specifically, the dosage for carrying viscous fluid loss additive is the 0.2%-1% of modified sodium bentonite quality, and it is swollen to improve modified sodium baseMoisten the viscosity and filtration property of soil, obtain Efficient bentonite.
Preferably, it is modified cellulose to carry viscous fluid loss additive.
Specifically, the dosage of rheology stabilizer is the 0.1%-0.3% of modified sodium bentonite quality, and it is swollen to improve modified sodium baseMoisten the rheological characteristic and stability of soil, obtain Efficient bentonite.
Preferably, rheology stabilizer is metal hydroxides（MMH）, it is golden that metal hydroxides includes divalent metal, trivalentCategory, rear metal hydroxides with slurry form the hydrosol of positively charged, i.e. MMH positive colloids, improve the rheological characteristic and stability of system.
Specifically, the dosage of sodium agent is the 4%-6% of raw ore bentonite quality, in order that original ore soil can be by sufficient sodiumChange, obtain being modified sodium bentonite.
Preferably, sodium agent is sodium carbonate, at least one of sodium fluoride, when calcium-sodium form raw ore bentonite calcium type partially againWhen, from the mixed sodium agent of sodium carbonate, sodium fluoride, improve sodium effect.
Specifically, the dosage of ion modification auxiliary agent is the 0.1%-0.5% of raw ore bentonite quality, is slightly increased in system certainThe high valence ion of amount, to strengthen the network strength of dispersion liquid, reach and put forward highly viscous purpose, help to obtain changing for more preferable performanceProperty sodium bentonite.
Preferably, ion modification auxiliary agent is at least one of divalent ion modified additive, trivalent ion modified additive.
It is further preferred that divalent ion modified additive includes magnesium salts, trivalent ion modified additive includes aluminium salt.
After Efficient bentonite slurrying provided in an embodiment of the present invention, viscosity is high, and rheological characteristic is good, without glutinous silk phenomenon, non-gellingPhenomenon, in the uniform liquid of flowing.
The present invention still further provides the preparation side of the Efficient bentonite on the premise of the Efficient bentonite is providedMethod.
In one embodiment, the preparation method comprises at least following steps：
（1）By modified sodium bentonite and acrylic homopolymer, viscous fluid loss additive, rheology stabilizer progress mixing treatment are put forward,Obtain mixed material；
（2）Described mixed material is subjected to milling processing, obtains Efficient bentonite.
Preferably, readings >=30 of φ 600 of modified sodium bentonite, so as to get Efficient bentonite it is with slurry after have it is higherViscosity.
Explanation is further explained to above-mentioned preparation method below：
Preferably, the preparation method of modified sodium bentonite is as follows：
（11）Raw ore bentonite is carried out after crushing homogenizing processing, particle diameter screening, obtains original ore soil；
（12）The original ore soil and sodium agent, ion modification auxiliary agent are subjected to mixing treatment, obtain mixed material；
（13）Add water in the mixed material, after stir process, carry out banking up ripening, drying process, changedProperty sodium bentonite, the preparation technology is simple, easy to operate, safety and environmental protection, resulting modification sodium bentonite, and viscosity is high,Filter loss is low, and expansion index is high.
Preferably, the addition of water is the 35-45% of original ore soil quality, in modifying process, bentonitic calcium, magnesium plasmaTo enter line replacement in aqueous medium to react with additional sodium ion, very little, reaction condition is poor for moisture content, be unfavorable for natridization reaction andModified progress.
Preferably, the ripening time is banked up as >=3 months, and it is abundant to ensure that reaction is carried out.
Preferably, drying process is dryness in the sun.
The preparation method of Efficient bentonite provided in an embodiment of the present invention, technique is simple, easy to operate, safety and environmental protection.
In order to better illustrate the preparation method of Efficient bentonite provided in an embodiment of the present invention, done below by embodimentIt is further to illustrate.
Embodiment 1
A kind of Efficient bentonite, including following raw material components：Modified sodium bentonite, acrylic homopolymer, modified fibreElement, metal hydroxides, the modified sodium bentonite and acrylic homopolymer, modified cellulose, metal hydroxidesMass ratio is 100：0.1：0.6：0.3；Wherein, the raw material components of the modified sodium bentonite be calcium-sodium form raw ore bentonite,Sodium carbonate, magnesium salts divalent ion modified additive, the calcium-sodium form raw ore bentonite change with sodium carbonate, magnesium salts divalent ionProperty auxiliary agent mass ratio be 100:4:0.1.
The preparation method of Efficient bentonite, comprises the following steps：
（1）Calcium-sodium form raw ore bentonite is carried out after crushing homogenizing processing, particle diameter screening, obtains calcium-sodium form original ore soil；
（2）It is respectively the sodium carbonate of original ore soil quality 4%, 0.1%, magnesium salts divalence by the calcium-sodium form original ore soil and additionIon modification auxiliary agent carries out mixing treatment, obtains mixed material；
（3）The water that addition is original ore soil quality 35%-45% is added in the mixed material, after stir process, carries out heapAgeing more than 3 months is put, dryness in the sun, obtains being modified sodium bentonite；
（4）By modified sodium bentonite and 0.1%, 0.6%, 0.3% propylene of the respectively modified sodium bentonite quality of additionAcids homopolymer, modified cellulose, metal hydroxides carry out mixing treatment, obtain mixed material；
（5）After described mixed material is carried out into milling processing, Efficient bentonite is obtained.
Embodiment 2
A kind of Efficient bentonite, including following raw material components：Modified sodium bentonite, acrylic homopolymer, modified fibreElement, metal hydroxides, the modified sodium bentonite and acrylic homopolymer, modified cellulose, metal hydroxidesMass ratio is 100：0.3：1：0.1；Wherein, the raw material components of the modified sodium bentonite are raw ore bentonite, sodium carbonate, fluorineChange sodium, magnesium salts ion modification auxiliary agent, aluminium salt class ion modification auxiliary agent, the raw ore bentonite and sodium carbonate, sodium fluoride, magnesium saltsClass ion modification auxiliary agent, the mass ratio of aluminium salt class ion modification auxiliary agent are 100:3:3:0.1:0.1.
The preparation method of Efficient bentonite, comprises the following steps：
（1）Calcium-sodium form and calcium-magnesium types raw ore bentonite are carried out after crushing homogenizing processing, particle diameter screening, obtain calcium-sodium form withCalcium-magnesium types mixing original ore soil；
（2）Calcium-the sodium form is mixed with calcium-magnesium types original ore soil and addition be respectively mix original ore soil quality 3%, 3%,0.1%th, 0.1% sodium carbonate, sodium fluoride, magnesium salts ion modification auxiliary agent, aluminium salt class ion modification auxiliary agent carry out mixing treatment, obtainTo mixed material；
（3）Water of the addition for mixing original ore soil quality 35%-45% is added in the mixed material, after stir process, enteredRow banks up ageing more than 3 months, dryness in the sun, obtains being modified sodium bentonite；
（4）By modified sodium bentonite and 0.3%, 1%, 0.1% acrylic acid of the respectively modified sodium bentonite quality of additionClass homopolymer, modified cellulose, metal hydroxides carry out mixing treatment, obtain mixed material；
（5）After described mixed material is carried out into milling processing, Efficient bentonite is obtained.
Embodiment 3
A kind of Efficient bentonite, including following raw material components：Modified sodium bentonite, acrylic homopolymer, modified fibreElement, metal hydroxides, the modified sodium bentonite and acrylic homopolymer, modified cellulose, metal hydroxidesMass ratio is 100：0.5：0.2：0.2；Wherein, the raw material components of the modified sodium bentonite be raw ore bentonite, sodium carbonate,Magnesium salts divalent ion modified additive, the raw ore bentonite and sodium carbonate, the mass ratio of magnesium salts divalent ion modified additiveFor 20:1:0.1.
The preparation method of Efficient bentonite, comprises the following steps：
（1）Calcium-magnesium types raw ore bentonite is carried out after crushing homogenizing processing, particle diameter screening, obtains calcium-magnesium types original ore soil；
（2）It is respectively the sodium carbonate of original ore soil quality 5%, 0.5%, magnesium salts divalence by the calcium-magnesium types original ore soil and additionIon modification auxiliary agent carries out mixing treatment, obtains mixed material；
（3）The water that addition is original ore soil quality 35%-45% is added in the mixed material, after stir process, carries out heapAgeing more than 3 months is put, dryness in the sun, obtains being modified sodium bentonite；
（4）By modified sodium bentonite and 0.5%, 0.2%, 0.2% propylene of the respectively modified sodium bentonite quality of additionAcids homopolymer, modified cellulose, metal hydroxides carry out mixing treatment, obtain mixed material；
（5）After described mixed material is carried out into milling processing, Efficient bentonite is obtained.
In order to better illustrate the characteristic of Efficient bentonite provided in an embodiment of the present invention, below prepared by embodiment 3Efficient bentonite slurrying simultaneously tests corresponding index, as a result as shown in table 1.
Table 1
Detection：350mL distilled water, 11.25g soil samples（Concentration 3.21% (m/v)）
It can be obtained by data above, after the Efficient bentonite slurrying obtained by the present invention, have viscosity high, rheological characteristic is good（Ratio of dynamic shear force/yield value to plastic viscosity≤1.5）, without glutinous silk phenomenon, non-gelling phenomenon, in the performance for flowing uniform liquid.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present inventionAny modification, equivalent substitution or improvement made within refreshing and principle etc., should be included in the scope of the protection.