CN1446845A - Dry-process method for producing bentonite - Google Patents
Dry-process method for producing bentonite Download PDFInfo
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- CN1446845A CN1446845A CN 02103804 CN02103804A CN1446845A CN 1446845 A CN1446845 A CN 1446845A CN 02103804 CN02103804 CN 02103804 CN 02103804 A CN02103804 A CN 02103804A CN 1446845 A CN1446845 A CN 1446845A
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Abstract
A process for preparing organic bentone by dry method includes mixing the natural Ca-base bentone with sodium carbonate, exchange reaction to become Na-base bentone, mixing with activator, reaction, mixing with organic coating agent, heating, reaction, extruding out, baking and grinding. Its advantage is high productivity.
Description
Affiliated technical field
The invention belongs to the deep processing method of wilkinite material, main being suitable for becomes organobentonite with the natural calcium base bentonite by the dry process artificial modification.
Background technology
Wilkinite (Bentonite) is the tonstein that an a kind of montmorillonite is the essential mineral composition, the title that " omnipotent clay " arranged, all having obtained using widely in many industries such as metallurgy, casting, chemical industry, oil, environmental protection, agriculturals, is a kind of very important nonmetalliferous ore.China's bentonite resource is abundant, but be thick level product with low content of technology mostly, as calcium-base bentonite etc., organobentonite is as the wilkinite product of a kind of hi-tech, high value and high added value, character with oleophilic drainage, its price is widely used in the oil products such as paint, printing ink, coating, drilling mud more than 1.5 ten thousand yuan/ton.China's organobentonite Products Development and development ground zero, produce the bentonite producer whole nation 3-4 family is only arranged, output and kind are very limited, and China several organobentonite producer all adopts wet processing, be about to calcium-base bentonite making beating, desanding, sodium, covering, washing, filter-press dehydration, drying, abrasive dust, complex process, facility investment is big, the cost height is difficult to realize extensive and continuous production.
Summary of the invention
For overcome existing wet production organobentonite method complex process, facility investment is big, cost is high, be difficult to realize extensive and continuous production problem.The invention provides a kind of dry production organobentonite method, its technological process is simple, need not wash and dewater, and the production efficiency height, cost is low, is easy to realize scale operation.
The present invention is achieved in that a kind of dry-process method for producing bentonite, comprise ore dressing-fragmentation-selected-add alkali-mix-add activator-add insulating covering agent-heating mixing-extruding-drying-abrasive dust-packaging process, at first the natural calcium base bentonite is added soda ash in mixing facilities, permutoid reaction generates sodium bentonite; Add activator then, mixing, reaction; Add organic insulating covering agent again, fully heating, mixing, reaction are extruded into bar with screw extrusion press at last, and extrudate drying, abrasive dust become the organobentonite powder.
The invention has the beneficial effects as follows that adopt dry production high quality organobentonite to compare with wet method, its equipment is few, less investment, technology is simple, easy handling, flow process is short, the efficient height, and cost is low, be easy to scale operation, from technical process, the flow process of wet method needs 6-8 hour, and this dry method only needs 6-8 hour, and this dry method only needed 2 hours just can finish bentonite remodeling, had saved the time greatly and had improved efficient.No waste water and exhaust gas emission are free from environmental pollution in the production process.Very high economic worth is arranged, owing to adopt dry method, saved complicated step in the wet method, cost is reduced to about 0.9 ten thousand yuan from 1.2 ten thousand yuan per ton of wet method, calculates with 1.4 ten thousand yuan/ton sale prices, and profit per ton can reach 0.5 ten thousand yuan.
The present invention is described further below in conjunction with drawings and Examples for description of drawings.Fig. 1 is a dry production organobentonite process flow sheet
Embodiment
1, ore dressing: select the good natural calcium base bentonite of purity for use, its smectite content is greater than 85%, and whiteness is greater than 80%, and cation exchange capacity is greater than 85mmol/100g, and sandstone is less.
2, just broken: that wilkinite just is crushed to less than below the 4mm.
3, selected: adding doubles bentonitic water, stirs, and discards impurity such as bottom sandstone.
4, add soda ash solution: selected wilkinite is added kneader, and add the soda ash of 2-3%, light ash must meet the GB210-63 standard.Be heated to 60 ℃, stir, mix, make calcium-base bentonite be modified as sodium bentonite.
5, add activator: add the activator of 2-3% in mixing roll, mix, the purpose that adds activator is in order to help the absorption of insulating covering agent on the montmorillonite mineral surface.
6, add the insulating covering agent quaternary amine: for the wilkinite of selecting for use among the present invention, the optimal addn of insulating covering agent is 55%.After adding insulating covering agent, temperature of charge keeps 60 ℃ in the mixing roll, stirs, mixing one hour.
7, extruding: the material that stirs after mixing enters screw extrusion press, is squeezed into bar.
8, oven dry: be lower than under 130 ℃ the temperature,, its moisture remained on about 3% with the organophilic clay oven dry.
9, abrasive dust: adopt the Raymond machine abrasive dust, its desanding device can improve the purity of product, and product granularity reaches 95% by-200 eye mesh screens.
Many studies have shown that, under the situation that condition is fit to, its quality of the organobentonite of dry production can reach the bentonite quality of wet production fully.These conditions mainly comprise original soil selection, production technique, insulating covering agent selection and overlay environment etc.Adopt dry process of the present invention, the organobentonite quality index of embodiment and see Table 1 with the contrast of national sector standard HG/T2248-91.
Can find out from table 1, the organobentonite of present embodiment, its viscosity is apparently higher than the viscosity index of China's industry standard regulation.
Organobentonite to present embodiment carries out the X-ray diffraction check, and recording d (001) is 40 ± 0.2 , illustrates that organic insulating covering agent has entered between montmorillonite layer, and interlamellar spacing is increased to about 40 .The organophilic clay quality of table 1 present embodiment and the contrast of national sector standard
| Outward appearance | Viscosity Pa.s | 105 ℃ of fugitive constituent % | Granularity (200) % | Loss on ignition % | |
| HG/T2248- 91 | Pale powder | ??≥ ??0.9 | ??≤3.5 | ??≥95.0 | ???≤ ???40.0 |
| Present embodiment | White powder | ??≥ ??1.8 | ??≤3.5 | ??≥95.0 | ???≤ ???38.0 |
Claims (6)
1, a kind of dry-process method for producing bentonite, comprise ore dressing-fragmentation-selected-add alkali-mix-add activator-add insulating covering agent-heating mixing-extruding-drying-abrasive dust-packaging process, it is characterized in that: the natural calcium base bentonite is added soda ash in mixing facilities, and permutoid reaction generates sodium bentonite; Add activator then, mixing, reaction; Add organic insulating covering agent again, fully heating, mixing, reaction are extruded into bar with screw extrusion press at last, and extrudate drying, abrasive dust become the organobentonite powder.
2, production method as claimed in claim 1 is characterized in that: be under the condition of 65-70% at wilkinite moisture, add soda ash solution, the ratio of soda ash is the 2-3% of original soil.
3, production method as claimed in claim 1 is characterized in that: the activator that adds 2-3% in sodium bentonite;
4, production method as claimed in claim 1 is characterized in that: described insulating covering agent is a quaternary amine, and ratio is 35-55%.
5, production method as claimed in claim 1 is characterized in that: sodium, activation and organically-modifiedly finish in same mixing roll.
6, production method as claimed in claim 1 is characterized in that: employing earlier is mixing, adopts the mixture of screw extrusion press extruding wilkinite and insulating covering agent again, to finish last overwrite procedure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02103804XA CN1185295C (en) | 2002-03-27 | 2002-03-27 | Dry-process method for producing bentonite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02103804XA CN1185295C (en) | 2002-03-27 | 2002-03-27 | Dry-process method for producing bentonite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1446845A true CN1446845A (en) | 2003-10-08 |
| CN1185295C CN1185295C (en) | 2005-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB02103804XA Expired - Fee Related CN1185295C (en) | 2002-03-27 | 2002-03-27 | Dry-process method for producing bentonite |
Country Status (1)
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| CN (1) | CN1185295C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102241068A (en) * | 2011-07-07 | 2011-11-16 | 浙江丰虹新材料股份有限公司 | Method for semi-continuous dry preparation of organic clay by screw extrusion type kneading machine |
| CN102465740A (en) * | 2010-11-19 | 2012-05-23 | 山东鲁阳股份有限公司 | Dry formed automotive three-way catalytic converter sealing gasket and preparation method thereof |
| CN102765730A (en) * | 2012-08-02 | 2012-11-07 | 中国科技开发院广西分院 | Preparation method of high-performance multipurpose modified bentonite |
| CN102974750A (en) * | 2012-05-03 | 2013-03-20 | 董宪姝 | Preparation method of nature sodium base bentonite for precise casting |
| CN105936510A (en) * | 2014-10-14 | 2016-09-14 | 王家君 | Modification method of organic bentonite |
| CN107184404A (en) * | 2017-05-22 | 2017-09-22 | 句容康泰膨润土有限公司 | Hand-cleansing cream containing bentonite and production method for the dirty industry of weight |
| CN107384438A (en) * | 2017-08-25 | 2017-11-24 | 芜湖飞尚非金属材料有限公司 | A kind of preparation method of bentonite soil conditioner |
-
2002
- 2002-03-27 CN CNB02103804XA patent/CN1185295C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102465740A (en) * | 2010-11-19 | 2012-05-23 | 山东鲁阳股份有限公司 | Dry formed automotive three-way catalytic converter sealing gasket and preparation method thereof |
| CN102241068A (en) * | 2011-07-07 | 2011-11-16 | 浙江丰虹新材料股份有限公司 | Method for semi-continuous dry preparation of organic clay by screw extrusion type kneading machine |
| CN102241068B (en) * | 2011-07-07 | 2014-06-25 | 浙江丰虹新材料股份有限公司 | Method for semi-continuous dry preparation of organic clay by screw extrusion type kneading machine |
| CN102974750A (en) * | 2012-05-03 | 2013-03-20 | 董宪姝 | Preparation method of nature sodium base bentonite for precise casting |
| CN102974750B (en) * | 2012-05-03 | 2015-08-19 | 董宪姝 | A kind of preparation method of hot investment casting natural sodium bentonite |
| CN102765730A (en) * | 2012-08-02 | 2012-11-07 | 中国科技开发院广西分院 | Preparation method of high-performance multipurpose modified bentonite |
| CN105936510A (en) * | 2014-10-14 | 2016-09-14 | 王家君 | Modification method of organic bentonite |
| CN105936510B (en) * | 2014-10-14 | 2018-08-24 | 北京京盛国泰科技有限公司 | A kind of bentonite method of modifying |
| CN107184404A (en) * | 2017-05-22 | 2017-09-22 | 句容康泰膨润土有限公司 | Hand-cleansing cream containing bentonite and production method for the dirty industry of weight |
| CN107384438A (en) * | 2017-08-25 | 2017-11-24 | 芜湖飞尚非金属材料有限公司 | A kind of preparation method of bentonite soil conditioner |
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| Publication number | Publication date |
|---|---|
| CN1185295C (en) | 2005-01-19 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050119 Termination date: 20130327 |