CN103979565B - A kind ofly with the addition of the settlement separate method of polymer organic dispersing agent mud for making - Google Patents
A kind ofly with the addition of the settlement separate method of polymer organic dispersing agent mud for making Download PDFInfo
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- CN103979565B CN103979565B CN201410244902.XA CN201410244902A CN103979565B CN 103979565 B CN103979565 B CN 103979565B CN 201410244902 A CN201410244902 A CN 201410244902A CN 103979565 B CN103979565 B CN 103979565B
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Abstract
The invention discloses a kind of settlement separate method for making with the addition of polymer organic dispersing agent clay mud, belonging to minerals separation purification techniques field.Its step comprises: will add the clay slurrying of organic dispersing agent, mud relatively pure to upper strata after settlement separate removal chip carries out ozonation aerated.Make macromolecule dispersing agent oxidized by the Strong oxdiative aeration of ozone of the present invention, thus the stable equilibrium of clay mud that breaking stable suspends, make clay mud can natural subsidence.Soil-the water realizing mud is separated, and obtains clay breeze product.
Description
Technical field
The present invention relates to the method that sedimentation occurs fast for argillaceous mineral and macromolecule dispersing agent mud, be applicable to minerals separation purification techniques field, the settlement separate method of polymer organic dispersing agent mud is with the addition of for making in particular to a kind of, a kind of by adding the strong oxidizers such as ozone in mud specifically, make owing to adding macromolecule dispersing agent that the stability of clay mud in stable suspersion state is destroyed, thus realize the method separated from mud by clay particle.
Background technology
Under normal circumstances, even the clay mud gravitate impact fully suspended, at short notice will sedimentation, there is mud-water separation.In clay pit ore dressing field, when the purity of clay is not high, in order to remove impurity fragmental products wherein and promote clay purity, normal needs add organic polymeric dispersants and make suspension and the good mud of stability in mud, can in the good mud of stability by the settlement separate impurity fragmental products that makes, be deposited to the bottom of container under gravity, realize the object of separating-purifying.But ensuing problem is usually all very thorny.Eliminate the mud (being usually located at the top of container) of impurity chip, need dehydration to obtain Powdered clay product.But because the clay mud obtained by organic polymeric dispersants is usually all highly stable, want from mud, obtain clay powders more difficult.For the clay mud such as kaolin, montmorillonite of sheet, be generally by ultrafiltration or high speed centrifugation, the water in mud is discharged, leave powder clay.But for the tiny powder clay of nano level, as polygorskite or attapulgite, the thinnest existing mesh screen of the particle diameter ratio due to clay mineral is also thin, and the method for ultrafiltration can cause loss, reduces the rate of recovery.
Summary of the invention
1, the technical problem that will solve is invented
Main purpose of the present invention is for the problem in existing clay pit sedimentation purification, there is provided a kind of and with the addition of the settlement separate method of polymer organic dispersing agent mud for making, make macromolecule dispersing agent oxidized by the Strong oxdiative aeration of ozone, thus the stable equilibrium of clay mud that breaking stable suspends, make clay mud can natural subsidence.Soil-the water realizing mud is separated.
2, technical scheme
Inventive principle
Ozone, O
3, be a kind of strong oxidizer, can most organic compound be oxidized.Organic dispersing agent, as in clay purification, conventional sodium polyacrylate, polyoxyethylene glycol etc. is the huge chain polymer of molecular weight, the rack-like structure that C-H molecule aggregation becomes makes the clay particle in water fully disperse, and forms stable colloid.If add ozone, O at the mud stable by macromolecule dispersing agent
3strong oxidation can make chain polymer " smash " become CO
2and H
2o.By very fast unstability, dehydration and the sedimentation of colloid is there is in the clay particle losing macromolecular scaffold in aqueous dispersion.Isolate the object that sediment just reaches slurry dewatering.
Technology contents:
For making the settlement separate method that with the addition of polymer organic dispersing agent clay mud, the steps include:
(1) be dissolved in the water by polymer organic dispersing agent, preparation is the mixing solutions of 0.2 ‰ ~ 0.5 ‰ polymer organic dispersing agents containing mass percent;
(2) adding clay preparation mass percent in the mixing solutions configured to step (1) is the suspension of 1 ~ 15%, after soaking, break into mud with pulping equipment;
(3) this mud is placed in settling leg precipitate and separate 2 ~ 24 hours, then removes the chip impurity bottom settling leg;
(4) pass into ozone, carry out ozonation aerated to the remaining mud being suspended in settling leg top after step (3) process;
(5) leave standstill after aeration, realize mud-water separation, remove upper strata clear water, obtain high concentration slurry, obtained clay breeze after dry.
In described step 1, polymer organic dispersing agent is sodium polyacrylate, polyoxyethylene glycol or polyacrylamide.
The molecular weight 1000 to 100 ten thousand of described sodium polyacrylate, polyoxyethylene glycol or polyacrylamide.
Clay described in step 2 is attapulgite clay, kaolin or montmorillonite.
Ozone dosage described in step 4, according to ozone: the mass ratio of dispersion agent=1:1 ~ 1:5 passes into ozone.
After soaking, mud is broken into pulping equipment in described step (2), comprise immersion, pair roller, smash slurry, stirring, ultrasonic, clarifixator, molecular mill, colloidal mill method and apparatus, bulk or Powdered clay are fully mixed with into mud with macromolecule dispersing agent.
3, beneficial effect
Innovative point of the present invention and feature are:
(1) ozone for smashing macromolecule dispersing agent of the present invention, final fragment residual after completing strong oxidation only has CO
2and H
2o, does not almost destroy the attribute of clay product, does not also form new hazardous and noxious substances.This is extremely important to the use of purification clay.
(2) owing to adopting suspension pulping,---technique very close with conventional clay ore deposit purification & isolation of---ozonation aerated to the stable mud suspended---the mud in suspension unstability precipitation of sedimentation fragmental products, original clay purifying technique is without the need to huge transformation.
Embodiment
Embodiment 1:
By molecular weight be 1000 sodium polyacrylate be dissolved in 1000 ml waters, be mixed with the mixing solutions that mass percent concentration is 0.3 ‰.Attapulgite clay not containing montmorillonite is dissolved in above-mentioned mixing solutions, is mixed with the attapulgite clay water suspensions that mass percent concentration is 1%.After soaking half an hour, be broken into mud with pulping equipment.This mud is placed in settling leg precipitate and separate, after settlement separate through 3 hours, remove part mud+throw out that bottom settling leg, chip content is higher, namely remove the chip impurity bottom except settling leg.According to ozone weight: the mass ratio of sodium polyacrylate=1:1 passes into ozone, carry out ozonation aerated to the residue mud on settling leg top.Ventilation is stopped after 6 hours of aeration.Leave standstill after 10 hours, the ratio of supernatant liquor accounts for 40% again, removes upper strata clear water, obtains high concentration slurry, obtained clay breeze after dry.The ratio of supernatant liquor only accounts for the colloid dispersion that 40% explanation causes by dispersion agent sodium polyacrylate not to be existed.If do not implement ozonation aerated, after comparative group left standstill through 10 hours, the ratio of supernatant liquor is almost 0.Wherein through soak after break into mud step with pulping equipment, comprise immersion, pair roller, smash slurry, stirring, ultrasonic, clarifixator, molecular mill, colloidal mill method and apparatus, bulk or Powdered clay are fully mixed with into mud with macromolecule dispersing agent.
Embodiment 2:
Step is with embodiment 1, and difference is, is that the sodium polyacrylate of 4000 is dissolved in 1000 ml waters, is mixed with the mixing solutions that mass concentration is 0.3 ‰ by molecular weight.Attapulgite clay not containing montmorillonite is dissolved in above-mentioned mixing solutions, is mixed with the attapulgite clay water suspensions that mass concentration is 3%.After soaking half an hour, be broken into mud with pulping equipment.After settlement separate through 6 hours, remove part mud+throw out that bottom settling leg, chip content is higher.According to ozone weight: the mass ratio of sodium polyacrylate=1:3 passes into ozone and carries out aeration, carries out ozonation aerated to the residue mud on settling leg top.Ventilation is stopped after 8 hours of aeration.Leave standstill after 10 hours, the ratio of supernatant liquor accounts for 45% again.Illustrate that the colloid dispersion caused by dispersion agent sodium polyacrylate does not exist.
Embodiment 3:
Step is with embodiment 1, and difference is, is that the sodium polyacrylate of 1,000,000 is dissolved in 1000 ml waters, is mixed with the mixing solutions that mass concentration is 0.2 ‰ by molecular weight.The attapulgite clay 70 grams not being contained montmorillonite is dissolved in above-mentioned mixing solutions and is mixed with the attapulgite clay water suspensions that mass concentration is 7%.After soaking half an hour, be broken into mud with pulping equipment.After settlement separate through 8 hours, remove part mud+throw out that bottom settling leg, chip content is higher.According to ozone weight: the mass ratio of sodium polyacrylate=1:5 passes into ozone and carries out aeration, carries out ozonation aerated to the residue mud on settling leg top.Ventilation is stopped after 8 hours of aeration.Leave standstill after 10 hours, the ratio of supernatant liquor accounts for 35% again.Illustrate that the colloid dispersion caused by dispersion agent sodium polyacrylate does not exist.
Embodiment 4:
Step is with embodiment 1, and difference is, polyoxyethylene glycol is dissolved in 1000 ml waters with embodiment 1. by step, is mixed with the mixing solutions that mass concentration is 0.5 ‰.100 grams of kaolin clays containing chips such as quartzy micas are dissolved in above-mentioned dispersion liquid and are mixed with the kaolin clay suspension that mass concentration is 10%.After soaking through 2 hours, be broken into mud with pulping equipment.After settlement separate through 2 hours, remove part mud+throw out that bottom settling leg, chip content is higher.According to ozone weight: the mass ratio of sodium polyacrylate=1:2 passes into ozone and carries out aeration.Ventilation is stopped after 3 hours of aeration.Leave standstill after 10 hours, the ratio of supernatant liquor accounts for 80% again.Illustrate that the colloid dispersion caused by dispersion agent polyoxyethylene glycol does not exist.
Embodiment 5:
Step is with embodiment 1, and difference is, is dissolved in by polyacrylamide in 1000 ml waters, is mixed with the mixing solutions that mass concentration is 0.5 ‰.150 grams of montmorillonitic clays containing chips such as quartz are dissolved in above-mentioned dispersion liquid and are mixed with the kaolin clay suspension that mass concentration is 15%.After soaking through 2 hours, be broken into mud with pulping equipment.After settlement separate through 12 hours, remove part mud+throw out that bottom settling leg, chip content is higher.According to ozone weight: the mass ratio of sodium polyacrylate=1:4 passes into ozone and carries out aeration.Ventilation is stopped after 3 hours of aeration.Leave standstill after 24 hours, the ratio of supernatant liquor accounts for 50% again.Illustrate that the colloid dispersion caused by dispersion agent polyacrylamide does not exist.
Embodiment 6:
Step is with embodiment 1, and difference is, is that the sodium polyacrylate of 2000 is dissolved in 1000 ml waters, is mixed with the mixing solutions that mass concentration is 0.3 ‰ by 0.3 gram molecular weight.40 grams are not dissolved in above-mentioned dispersion liquid containing the attapulgite clay of montmorillonite, are mixed with the attapulgite clay water suspensions that mass concentration is 4%.After soaking half an hour, be broken into mud with pulping equipment.After settlement separate through 24 hours, remove part mud+throw out that bottom settling leg, chip content is higher.According to ozone weight: the mass ratio of sodium polyacrylate=1:1 passes into ozone, carry out ozonation aerated to the residue mud on settling leg top.Ventilation is stopped after 8 hours of aeration.Leave standstill after 10 hours, the ratio of supernatant liquor accounts for 50% again, removes upper strata clear water, obtains high concentration slurry, obtained clay breeze after dry.Illustrate that the colloid dispersion caused by dispersion agent sodium polyacrylate does not exist.If do not implement ozonation aerated, after comparative group left standstill through 10 hours, the ratio of supernatant liquor is almost 0.
Comprehensive above-described embodiment can be found out, through the super oxygenizement of ozone, macromolecule dispersing agents such as playing the sodium polyacrylate of dispersion and colloid-stabilised effect is destroyed completely, caused the unstability of overstable mud thus, formed the mud-water separation of see in settling leg 50%.In contrast be do not have ozonation aerated mud mud-water separation rate almost nil.Therefore can say, the clay method of purification using this patent to provide, can improve 50% of mud-water separation efficiency, substantially increase purification efficiency, reduces the running cost of moisture in later stage evaporation mud.
Claims (4)
1., for making the settlement separate method that with the addition of polymer organic dispersing agent clay mud, the steps include:
(1) be dissolved in the water by polymer organic dispersing agent, preparation mass percent is the mixing solutions of 0.2 ‰ ~ 0.3 ‰;
(2) add clay in the mixing solutions configured to step (1), preparation mass percent is the suspension of 1 ~ 7%, after soaking, break into mud with pulping equipment;
(3) this mud is placed in settling leg precipitate and separate 3 ~ 24 hours, then removes the chip impurity bottom settling leg;
(4) pass into ozone, carry out ozonation aerated to the remaining mud being suspended in settling leg top after step (3) process;
(5) leave standstill after aeration, realize mud-water separation, remove upper strata clear water, obtain high concentration slurry, obtained clay breeze after dry; Described clay is attapulgite clay, and described polymer organic dispersing agent is sodium polyacrylate.
2. according to claim 1ly it is characterized in that for making the settlement separate method that with the addition of polymer organic dispersing agent clay mud, the molecular weight of described sodium polyacrylate is 1000 to 100 ten thousand.
3. according to claim 1 for making the settlement separate method that with the addition of polymer organic dispersing agent clay mud, it is characterized in that described ozone, its dosage is according to ozone: the mass ratio of dispersion agent=1:1 ~ 1:5 passes into ozone.
4. according to claim 1-3 any one for making the settlement separate method that with the addition of polymer organic dispersing agent clay mud, it is characterized in that, after soaking, mud is broken into pulping equipment in described step (2), comprise immersion, pair roller, smash slurry, stirring, ultrasonic, clarifixator, molecular mill, colloidal mill method and apparatus, bulk or Powdered clay are fully mixed with into mud with macromolecule dispersing agent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410244902.XA CN103979565B (en) | 2014-06-04 | 2014-06-04 | A kind ofly with the addition of the settlement separate method of polymer organic dispersing agent mud for making |
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|---|---|---|---|
| CN201410244902.XA CN103979565B (en) | 2014-06-04 | 2014-06-04 | A kind ofly with the addition of the settlement separate method of polymer organic dispersing agent mud for making |
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| CN103979565A CN103979565A (en) | 2014-08-13 |
| CN103979565B true CN103979565B (en) | 2015-12-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105984977A (en) * | 2016-05-12 | 2016-10-05 | 浙江海洋大学 | Treatment process of cupriferous waste water |
| CN107235495B (en) * | 2017-06-10 | 2019-07-19 | 中国科学院兰州化学物理研究所 | A kind of method that depolymerization clay mineral crystalline substance beam prepares high length-diameter ratio monodimension nanometer material |
| CN108910905A (en) * | 2018-09-28 | 2018-11-30 | 芜湖市鹏磊新材料有限公司 | A kind of the ultrasound centrifugation purification and sodium base method of low-grade bentonite |
| CN111013552B (en) * | 2019-12-24 | 2020-12-29 | 中南大学 | Clay-based composite material for storing ozone |
| CN115321859B (en) * | 2022-07-25 | 2023-05-26 | 武汉理工大学 | Method for separating superfine powder and nanoclay from limestone mine tailing mud |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1555347A (en) * | 2001-09-14 | 2004-12-15 | 英默里斯颜料公司 | Integrated process for simultaneous beneficiation, leaching, and dewatering of kaolin clay suspension |
| CN101048468A (en) * | 2004-08-26 | 2007-10-03 | 恩格哈德公司 | Ultrafine hydrous kaolin pigments, methods of making the pigments, and methods of using the pigments in gloss paint formulations |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060249270A1 (en) * | 2005-05-03 | 2006-11-09 | Alves Paula R | Compositions comprising fine sedimentary kaolin and methods for preparing same |
| US8545787B2 (en) * | 2006-02-07 | 2013-10-01 | Imerys Pigments, Inc. | Method of treating an aqueous suspension of kaolin |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1555347A (en) * | 2001-09-14 | 2004-12-15 | 英默里斯颜料公司 | Integrated process for simultaneous beneficiation, leaching, and dewatering of kaolin clay suspension |
| CN101048468A (en) * | 2004-08-26 | 2007-10-03 | 恩格哈德公司 | Ultrafine hydrous kaolin pigments, methods of making the pigments, and methods of using the pigments in gloss paint formulations |
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