CN103979559B - Bentonite after acidifying - Google Patents
Bentonite after acidifying Download PDFInfo
- Publication number
- CN103979559B CN103979559B CN201410237844.8A CN201410237844A CN103979559B CN 103979559 B CN103979559 B CN 103979559B CN 201410237844 A CN201410237844 A CN 201410237844A CN 103979559 B CN103979559 B CN 103979559B
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- CN
- China
- Prior art keywords
- bentonite
- acidifying
- batching
- weathering
- sulfuric acid
- Prior art date
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- 239000000440 bentonite Substances 0.000 title claims abstract description 96
- 229910000278 bentonite Inorganic materials 0.000 title claims abstract description 96
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 title claims abstract description 96
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 37
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000428 dust Substances 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 9
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 8
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims abstract description 8
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims abstract description 8
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims abstract description 8
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims abstract description 8
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 6
- 238000000227 grinding Methods 0.000 claims abstract description 5
- 230000020477 pH reduction Effects 0.000 claims description 11
- 239000000047 product Substances 0.000 claims description 6
- 239000011265 semifinished product Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 3
- 239000010419 fine particle Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 8
- 239000000084 colloidal system Substances 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 abstract description 2
- 239000004615 ingredient Substances 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000002585 base Substances 0.000 description 6
- 238000005065 mining Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Landscapes
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention discloses the bentonite after a kind of acidifying, the main points of its technical scheme are that the bentonite batching after acidifying is made up of bentonite, sulfuric acid, quick dissolved sodium silicate, polyvinyl alcohol, hydroxypropyl methylcellulose and sodium carbonate. Bentonitic production method after acidifying: by abrasive dust in the bentonite batching input grinding machine after acidifying, the powder after abrasive dust is the bentonite after acidifying. Take first acidifying to carry out again compounding ingredient, can avoid sulfuric acid and quick dissolved sodium silicate, polyvinyl alcohol, hydroxypropyl methylcellulose and sodium carbonate generation chemical reaction, give full play to raw-material characteristic separately in batching, guarantee the bentonite inherent quality after acidifying. Bentonite after acidifying not only has good absorption property, high-temperature stability and lubricity, and water absorption rate, colloid index, plasticity, expansion multiple, colloid viscosity and thixotropy are also greatly improved. Bentonite after acidifying is applicable to produce the product in the fields such as coating, aviation, metallurgy, chemical fibre, oil and fire-fighting.
Description
Technical field
The present invention relates to acidification, be specifically related to the bentonite after a kind of acidifying.
Background technology
The bentonite resource of China is very abundant, and most of bentonite ore is taking calcium-base bentonite as main, and the low calcium-base bentonite of grade occupies the majority; In order to improve the performance of calcium-base bentonite, need to carry out acidified modified processing to calcium-base bentonite. Routine is carried out the method for the acidified modified processing of calcium-base bentonite, is sulfuric acid is directly added in raw ore of calcium base bentonite acidifying post-drying and abrasive dust.
In bentonite mining area, usage mining machine carries out mechanical mining bentonite raw ore, excavate out be a kind of compact massive bentonite raw ore, the volume of bentonite raw ore is larger, can not be directly used in acidification, normal employing pulverizer is broken for tiny particle and carries out acidification, is easy to destroy bentonitic crystal structure.
After acidification, do not carry out follow-up complementary modification, can not improve the quality of bentonite product comprehensively.
Summary of the invention
The object of the invention is to overcome weak point in prior art, the bentonite after a kind of acidifying is provided.
Bentonite batching after acidifying is made up of bentonite, sulfuric acid, quick dissolved sodium silicate, polyvinyl alcohol, hydroxypropyl methylcellulose and sodium carbonate.
Bentonitic production method after acidifying: by abrasive dust in the bentonite batching input grinding machine after acidifying, the powder after abrasive dust is the bentonite after acidifying.
Atlapulgite be with bentonite be raw material, through inorganic acidification, then through water rinse, the dry adsorbent of making, absorption property is good, but the water absorption rate of atlapulgite, colloid index, expansion multiple and colloidal property are very poor, the also easy moisture absorption in air, placed and can reduce for a long time absorption property.
It is 98% the concentrated sulfuric acid that sulfuric acid is selected concentration.
Quick dissolved sodium silicate is white granular material, can be dissolved in fast water, has that cohesive force is strong, intensity is higher, acid resistance, good heat resistance, the feature of alkali resistance and poor water resistance.
Polyethenol series white solid, that external form is divided is cotton-shaped, graininess, Powdered three kinds; Nonpoisonous and tasteless, graininess can be dissolved in 80--90 DEG C of water, pulverously after other powders pre-dispersed, can dissolve at normal temperatures. There is good viscosity, polymerism, caking property and water-retaining property.
Hydroxypropyl methylcellulose has thickening capabilities, salt discharge, pH stability, water-retaining property, dimensional stability, good film forming and the feature such as resistance to enzyme, dispersiveness and caking property widely.
Sodium carbonate has the general character and the heat endurance of salt, soluble in water, and its aqueous solution is alkalescence, in the present invention for adjusting the bentonite pH value after acidifying.
The present invention is achieved by following technical proposals:
1, the batching of the bentonite after acidifying is made up of following component by weight percentage: bentonite semi-finished product 90～98%, quick dissolved sodium silicate 0.1～5%, polyvinyl alcohol 0.1～5%, hydroxypropyl methylcellulose 0.01～3% and sodium carbonate 0～3% after acidifying.
2, the bentonitic production method after acidifying: by abrasive dust in the bentonite batching input grinding machine after acidifying, grain fineness≤0.074 millimeter, the powder after abrasive dust is the bentonite finished product after acidifying.
3, the half-finished production method of the bentonite after acidifying: in the mixer (1) first bentonite after weathering input having been turned round, then dilute sulfuric acid is slowly added and carries out acidification in the bentonite after weathering; (2) by the bentonite after acidification, push as bentonite tablet thickness≤3 millimeter of bentonite tablet by twin rollers; (3) bentonite tablet is transported to roasting in swinging drying oven, roasting time is 1～3 hour, sintering temperature is controlled at 250～350 DEG C, bentonite tablet water content≤5% after roasting, bentonite tablet after roasting is the bentonite semi-finished product after acidifying, and PCm is weight percentage.
4, the batching of bentonite tablet is made up of following component by weight percentage: the bentonite 60～85% after weathering and dilute sulfuric acid 15～40%.
5, the batching of dilute sulfuric acid is made up of following component by weight percentage: the concentrated sulfuric acid 1～5% that concentration is 98%, and water 95～99%, the concentrated sulfuric acid percentage that concentration is 98% is weight percentage.
6, bentonite raw ore need to be through two time weathering more than winter, bentonite the weathering that is fine particle from the raw ore disintegration of large block compact, pick obvious visible barren rock piece, string and other earth impurity, bentonite clay particle fineness≤5 millimeter after weathering.
Bentonitic production method after acidifying takes first acidifying to carry out compounding ingredient again, can avoid sulfuric acid and quick dissolved sodium silicate, polyvinyl alcohol, hydroxypropyl methylcellulose and sodium carbonate generation chemical reaction, give full play to raw-material characteristic separately in batching, and obtain complementation, guarantee the bentonite inherent quality after acidifying.
According to the needs of product quality, adopt sodium carbonate to adjust the bentonite pH value after acidifying, method is simple.
The present invention makes full use of solar energy, wind and rain alternately and with the passage of time, promotes the weathering effect to bentonite raw ore, improves the disintegration effect of bentonite raw ore, accelerates the dispersion of bentonite raw ore.
Bentonite after acidifying not only has good absorption property, high-temperature stability and lubricity, and water absorption rate, colloid index, plasticity, expansion multiple, colloid viscosity and thixotropy are also greatly improved.
Bentonite after acidifying is applicable to produce the product in the fields such as coating, aviation, metallurgy, chemical fibre, oil and fire-fighting.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
1, the batching of the bentonite after acidifying is made up of following component by weight percentage: bentonite semi-finished product 94.5%, quick dissolved sodium silicate 2.3%, polyvinyl alcohol 2%, hydroxypropyl methylcellulose 1% and sodium carbonate 0.2% after acidifying.
2, the bentonitic production method after acidifying: by abrasive dust in the bentonite batching input grinding machine after acidifying, grain fineness≤0.074 millimeter, the powder after abrasive dust is the bentonite finished product after acidifying.
3, the half-finished production method of the bentonite after acidifying: in the mixer (1) first bentonite after weathering input having been turned round, then dilute sulfuric acid is slowly added and carries out acidification in the bentonite after weathering; (2) by the bentonite after acidification, push as bentonite tablet thickness≤3 millimeter of bentonite tablet by twin rollers; (3) bentonite tablet is transported to roasting in swinging drying oven, roasting time is 2 hours, and sintering temperature is controlled at 280～320 DEG C, bentonite tablet water content≤5% after roasting, and the bentonite tablet after roasting is the bentonite semi-finished product after acidifying.
4, the batching of bentonite tablet is made up of following component by weight percentage: the bentonite 72% after weathering and dilute sulfuric acid 28%.
5, the batching of dilute sulfuric acid is made up of following component by weight percentage: the sulfuric acid 2% of concentration 98 ﹪, water 98%.
6, bentonite raw ore need to be through two time weathering more than winter, bentonite the weathering that is fine particle from the raw ore disintegration of large block compact, pick obvious visible barren rock piece, string and other earth impurity, bentonite clay particle fineness≤5 millimeter after weathering.
Claims (1)
1. the bentonite after an acidifying, it is characterized in that, the bentonite batching after acidifying is made up of following component by weight percentage: bentonite semi-finished product 90～98%, quick dissolved sodium silicate 0.1～5%, polyvinyl alcohol 0.1～5%, hydroxypropyl methylcellulose 0.01～3% and sodium carbonate 0～3% after acidifying;
The half-finished production method of bentonite after described acidifying: in the mixer (1) first bentonite after weathering input having been turned round, then dilute sulfuric acid is slowly added and carries out acidification in the bentonite after weathering; (2) by the bentonite after acidification, push as bentonite tablet thickness≤3 millimeter of bentonite tablet by twin rollers; (3) bentonite tablet is transported to roasting in swinging drying oven, roasting time is 1～3 hour, sintering temperature is controlled at 250～350 DEG C, bentonite tablet water content≤5% after roasting, and the bentonite tablet after roasting is the bentonite semi-finished product after acidifying;
The batching of bentonite tablet is made up of following component by weight percentage: the bentonite 60～85% after weathering and dilute sulfuric acid 15～40%; The batching of dilute sulfuric acid is made up of following component by weight percentage: the sulfuric acid 1～5% of concentration 98 ﹪, water 95～99%; Bentonite raw ore need to be through two time weathering more than winter, bentonite the weathering that is fine particle from the raw ore disintegration of large block compact, pick obvious visible barren rock piece, string and other earth impurity, bentonite clay particle fineness≤5 millimeter after weathering;
Bentonitic production method after acidifying: by abrasive dust in the bentonite batching input grinding machine after acidifying, grain fineness≤0.074 millimeter, the powder after abrasive dust is the bentonite finished product after acidifying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410237844.8A CN103979559B (en) | 2014-06-01 | 2014-06-01 | Bentonite after acidifying |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410237844.8A CN103979559B (en) | 2014-06-01 | 2014-06-01 | Bentonite after acidifying |
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| Publication Number | Publication Date |
|---|---|
| CN103979559A CN103979559A (en) | 2014-08-13 |
| CN103979559B true CN103979559B (en) | 2016-05-18 |
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|---|---|---|---|
| CN201410237844.8A Active CN103979559B (en) | 2014-06-01 | 2014-06-01 | Bentonite after acidifying |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106280758A (en) * | 2016-07-29 | 2017-01-04 | 蒋文兰 | Bentonite photocatalytic spray liquid can be cleaned |
| CN108083291A (en) * | 2018-01-31 | 2018-05-29 | 安徽国创非金属矿业科技有限公司 | A kind of method for improving bentonite inorganic gel yield |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101230210A (en) * | 2007-12-28 | 2008-07-30 | 河北工业大学 | Method for preparing organic modified silicate mineral clay |
| CN103172077A (en) * | 2013-03-18 | 2013-06-26 | 芜湖飞尚非金属材料有限公司 | Preparation method of special trenchless mud bentonite |
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- 2014-06-01 CN CN201410237844.8A patent/CN103979559B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101230210A (en) * | 2007-12-28 | 2008-07-30 | 河北工业大学 | Method for preparing organic modified silicate mineral clay |
| CN103172077A (en) * | 2013-03-18 | 2013-06-26 | 芜湖飞尚非金属材料有限公司 | Preparation method of special trenchless mud bentonite |
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| CN103979559A (en) | 2014-08-13 |
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Effective date of registration: 20190918 Address after: 211700 Yulan Avenue 38-2, Xuyi County Economic Development Zone, Huaian City, Jiangsu Province Patentee after: Jiangsu Shiao Nonmetallic Application Technology Co., Ltd. Address before: 211700 Huaian, Xuyi province Timor King international residential area, building 2, unit 202 room 18 Patentee before: Xu Sheng Ying |