CN105271270A - High-purity attapulgite preparation method - Google Patents
High-purity attapulgite preparation method Download PDFInfo
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- CN105271270A CN105271270A CN201410307808.4A CN201410307808A CN105271270A CN 105271270 A CN105271270 A CN 105271270A CN 201410307808 A CN201410307808 A CN 201410307808A CN 105271270 A CN105271270 A CN 105271270A
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- attapulgite
- clay
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Abstract
The invention relates to a high-purity attapulgite preparation method. The method comprises the following characteristics: natural attapulgite clay mineral with main impurity components of quartz, dolomite, calcium carbonate and protein is preliminarily filtered; under the effect of mechanical force, the natural attapulgite clay mineral is added into a sodium polyphosphate or sodium silicate water solution with a certain concentration; under a certain temperature, attapulgite clay pulp with a certain concentration is prepared; a sufficient dispersion reaction is carried out; and separation and drying are carried out, such that high-purity attapulgite clay is obtained; or concentration is carried out, such that high-purity attapulgite clay pulp is obtained.
Description
Technical field
The present invention relates to a kind of preparation method of high pure attapulgite clay, belong to nonmetalliferous ore field of deep.
Background technology
Attapulgite clay is called for short the silicate that recessed soil is a kind of rich magnesium, its molecular formula [Mg
5si
8o
2o] (OH)
2(OH
2)
4.4H
2o, crystalline structure belongs to 2: 1 type layer chain clay minerals, the structures and characteristics special because of it thus give its very high use value.But due to recessed soil usually and the symbiosis such as rhombspar, calcite, quartz, opal, thus directly affect its result of use and use range.
Summary of the invention
Object of the present invention is just to provide a kind of preparation method of high pure attapulgite clay, with improve natural attapulgite clay use value, expand its use range.
Technical solution of the present invention is:
By the clay pit of the impurity component mainly natural Attapulgite of quartz, rhombspar, calcium carbonate, protein after initial filter, under mechanical force, added and be mixed with in certain density sodium polyphosphate or sodium silicate aqueous solution, at a certain temperature, be prepared into the clay ore pulp of certain density Attapulgite, after abundant dispersion reaction, then obtain the clay of high-purity Attapulgite or the concentrated clay ore pulp making high-purity Attapulgite through separation, drying.The clay pit initial filter fineness of natural Attapulgite is 75-45 micron (200 ~ 325 order).Dispersion purificant is chemical pure or analytical pure, and its composition is poly-phosphate or silicate.Dispersion purificant is sodium polyphosphate or water glass.The dispersion purificant aqueous solution of preparation is homogeneous phase aqueous solution, and water used is deionized water, and temperature remains on 40 ~ 80 DEG C, and dispersion purificant consumption is 0.5% ~ 3% of the clay pit of handled natural Attapulgite according to foreign matter content in the clay pit of natural Attapulgite.The clay pit add-on of natural Attapulgite is 1: 20 ~ 1: 10 with the ratio of the dispersion purificant aqueous solution.The mechanical force mode that the clay pit ore pulp of natural Attapulgite applies is medium-shear power or ultra-sonic oscillation.The clay pit of natural Attapulgite fully disperses under mechanical force He under hydration, is wherein with color substance Ti
2+with dispersion purificant generation chemical reaction, generate black TiPO
4with other impurity coprecipitation in container bottom.By dispersion and the clay employing centrifugation of the Attapulgite of purifying or the mode of gravity settling with the impurity that formed be separated.The clay of the high-purity Attapulgite after separation obtains the clay particle of required high-purity Attapulgite by air stream drying or vacuum freezedrying or spraying dry, or is made the clay slip of high-purity Attapulgite of desired concn by vacuum concentration.
Select inorganic salts as dispersion purificant, as silicate or poly-phosphate, with electrochemical action, rhombspar, quartz etc. are effectively separated by means of only absorption with the clay of Attapulgite, also can form the titanium phosphate of black with the band colour content titanium ion in the clay of Attapulgite by chemical reaction or titanium silicate precipitates simultaneously, make the clay of Attapulgite change fish sperm look into from beige, whiteness brings up to more than 85 from 0--40.
Purification principle of the present invention: because recessed native crystal has the good cleavage parallel with fibre axis, and layer-chain crystalline structure and fibrous fine crystals profile, the noble potential on surface is conducive to aquation, particularly Al in addition
3+and Mg
2+between extensively the having to be beneficial to and produce active surface sites and strengthen hydratability of aliovalent isomorphous replacement, therefore make recessed soil under impressed pressure as systems cleave power or supersound process can fully be disperseed.The imbalance of the recessed soil intrinsic pore passage structure in surface and surface charge forms adsorption center on recessed soil surface, therefore the absorption property that recessed soil is good makes himself to adsorb large water gaging and dispersion agent and has good suspension, thus with other materials as rhombspar, quartz, calcite, opal etc. are effectively separated, meanwhile, Ti
2++ Na
3pO
4or NaSiO
3→ TiPO
4↓ or TiSiO
3↓+Na
+
The method of the clay of the high-purity Attapulgite of clay pit synthesis of natural Attapulgite for: 75-45 micron (200 ~ 325 order) will be broken at the beginning of the clay pit of the natural Attapulgite of the clay content > 50% of Attapulgite, be mixed with homogeneous phase solution with deionized water and dispersion purificant simultaneously, wherein disperse purificant consumption to be 0.5% ~ 3% of the clay pit of natural Attapulgite; Under agitation, the clay pit of the natural Attapulgite after just broken is added in homogeneous phase solution, temperature is kept to be 40 ~ 80 DEG C, the clay pit add-on of natural Attapulgite is 1: 20-1: 10 with the ratio of the dispersion purificant aqueous solution, alternately shear agitation and ultra-sonic oscillation repeatedly after, be separated with gravity settling equipment or separating centrifuge, remove the impurity of deposition, obtain the clay viscous body of Attapulgite of purifying, then obtain the clay particle of loose Attapulgite through lyophilize or vacuum-drying or spraying dry.
The purify advantage of clay pit of natural Attapulgite of the present invention is adopted to be:
1, purifying technique is simple and easy to do, and raw material is easy to get.
2, after purifying, product purity is high, and can reach 99%, whiteness can reach more than 85.
Soviet Union of China recessed native mine belt type in Anhui mainly contains recessed soil type (impurity is a small amount of quartz), dolomite type, albumen stone-type, montmorillonite type, and in the class of above-mentioned various ore deposits, the massfraction of the clay of Attapulgite is 10% ~ 90%.It is quartz, calcite, rhombspar, opal that present method is applicable to impurities, and the clay pit of the natural Attapulgite of the clay content > 50% of Attapulgite.
Embodiment
Example 1: containing the clay pit of the natural Attapulgite of greyish-green of the clay 83.8% of quartz 17.2%, Attapulgite, just be broken to 25 microns (200 orders), 40 DEG C, in homogeneous phase aqueous solution containing sodium polyphosphate 1% are added by 1: 20, after 20min mechanical stirring and 10min ultra-sonic oscillation replace each 3 times, leave standstill 30min, produce obvious canescence suspension and black precipitate layering, extract out or incline and upper strata suspension, at 80 ~ 100 DEG C, carry out vacuum spray drying, the clay content of obtained Attapulgite be 99.5%, clay particle that whiteness is the Attapulgite of 87.
Example 2: be broken to 48 microns (300 orders) at the beginning of the clay pit containing the natural Attapulgite of canescence of rhombspar, quartz 47.5%, add in the homogeneous phase aqueous solution containing water glass 2.5%, 60 DEG C by 1: 15, after 30min mechanical stirring and 20min ultra-sonic oscillation replace each 2 times, first leave standstill 60min, upper strata suspension is inclined to, carry out centrifugation, obtain the clay magma of Attapulgite, again through 40 DEG C of vacuum lyophilizations, the clay particle that the clay content namely obtaining Attapulgite is 90%, whiteness is the Attapulgite of 91.
Claims (5)
1. the preparation method of high pure attapulgite clay, it is characterized in that: by the clay pit of the impurity component mainly natural Attapulgite of quartz, rhombspar, calcium carbonate, protein after initial filter, under mechanical force, added and be mixed with in certain density sodium polyphosphate or sodium silicate aqueous solution, at a certain temperature, be prepared into the clay ore pulp of certain density Attapulgite, after abundant dispersion reaction, then obtain the clay of high-purity Attapulgite or the concentrated clay ore pulp making high-purity Attapulgite through separation, drying.
2. the preparation method of high pure attapulgite clay according to claim 1, is characterized in that: the clay pit initial filter fineness of natural Attapulgite is 75-45 micron (200 ~ 325 order).
3. the preparation method of high pure attapulgite clay according to claim 1, it is characterized in that: the dispersion purificant aqueous solution of preparation is homogeneous phase aqueous solution, water used is deionized water, temperature remains on 40 ~ 80 DEG C, and dispersion purificant consumption is 0.5% ~ 3% of the clay pit of handled natural Attapulgite according to foreign matter content in the clay pit of natural Attapulgite.
4. the preparation method of high pure attapulgite clay according to claim 1, is characterized in that: the mechanical force mode that the ore pulp of the clay pit of natural Attapulgite applies is medium-shear power or ultra-sonic oscillation.
5. the preparation method of high pure attapulgite clay according to claim 1, is characterized in that: the clay of Attapulgite fully disperses under mechanical force He under hydration, is wherein with color substance Ti
3+with dispersion purificant generation chemical reaction, generate black TiPO
4with other impurity coprecipitation in container bottom.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410307808.4A CN105271270A (en) | 2014-07-01 | 2014-07-01 | High-purity attapulgite preparation method |
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|---|---|---|---|
| CN201410307808.4A CN105271270A (en) | 2014-07-01 | 2014-07-01 | High-purity attapulgite preparation method |
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|---|---|
| CN105271270A true CN105271270A (en) | 2016-01-27 |
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| CN201410307808.4A Pending CN105271270A (en) | 2014-07-01 | 2014-07-01 | High-purity attapulgite preparation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105923638A (en) * | 2016-06-12 | 2016-09-07 | 盱眙欧佰特粘土材料有限公司 | Integrated attapulgite clay ultrasonic dissociation and purification device and use method thereof |
| CN106113277A (en) * | 2016-08-26 | 2016-11-16 | 北京中煤矿山工程有限公司 | A kind of device rapidly and efficiently preparing clay oleo stock and pulping process |
| CN106745014A (en) * | 2017-01-24 | 2017-05-31 | 湘潭大学 | A kind of method of purification of low taste sepiolite |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1562865A (en) * | 2004-03-27 | 2005-01-12 | 淮阴工学院 | High pure attapulgite clay and preparation method |
| CN102874826A (en) * | 2012-10-18 | 2013-01-16 | 南京信息工程大学 | Purification technical method for attapulgite clay |
| CN103738975A (en) * | 2012-10-17 | 2014-04-23 | 明光市恒大棒粉厂 | Purification method of attapulgite clay |
-
2014
- 2014-07-01 CN CN201410307808.4A patent/CN105271270A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1562865A (en) * | 2004-03-27 | 2005-01-12 | 淮阴工学院 | High pure attapulgite clay and preparation method |
| CN103738975A (en) * | 2012-10-17 | 2014-04-23 | 明光市恒大棒粉厂 | Purification method of attapulgite clay |
| CN102874826A (en) * | 2012-10-18 | 2013-01-16 | 南京信息工程大学 | Purification technical method for attapulgite clay |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105923638A (en) * | 2016-06-12 | 2016-09-07 | 盱眙欧佰特粘土材料有限公司 | Integrated attapulgite clay ultrasonic dissociation and purification device and use method thereof |
| CN105923638B (en) * | 2016-06-12 | 2018-04-13 | 盱眙欧佰特粘土材料有限公司 | A kind of attapulgite clay Integral ultrasonic dissociation purifying plant and application method |
| CN106113277A (en) * | 2016-08-26 | 2016-11-16 | 北京中煤矿山工程有限公司 | A kind of device rapidly and efficiently preparing clay oleo stock and pulping process |
| CN106113277B (en) * | 2016-08-26 | 2018-09-11 | 北京中煤矿山工程有限公司 | A kind of device and pulping process rapidly and efficiently preparing clay magma |
| CN106745014A (en) * | 2017-01-24 | 2017-05-31 | 湘潭大学 | A kind of method of purification of low taste sepiolite |
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Application publication date: 20160127 |