CN1061946C - Process for producing sodium-base bentonite from calcium-base bentonite - Google Patents
Process for producing sodium-base bentonite from calcium-base bentonite Download PDFInfo
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- CN1061946C CN1061946C CN97103231A CN97103231A CN1061946C CN 1061946 C CN1061946 C CN 1061946C CN 97103231 A CN97103231 A CN 97103231A CN 97103231 A CN97103231 A CN 97103231A CN 1061946 C CN1061946 C CN 1061946C
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- bentonite
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Abstract
The present invention belongs to technology of the deep processing of bentonite, which is mainly suitable for modifying natural calcium bentonite into sodium bentonite by a dry manual method. The method of the present invention is mainly characterized in that a Raymond mill is utilized to once achieve the purposes of ion exchange reaction and mineral impurity removal to rapidly and conveniently generate sodium bentonite. The method completely achieves the purposes of continuous production in factories, short working procedure, low cost and great economic value and is better than production methods adopted at home and abroad.
Description
The invention belongs to bentonitic deep process technology.Mainly be applicable to the natural calcium base bentonite by artificial
" dry method " is modified as sodium bentonite.
Wilkinite is as foundry sand binding agent, drilling mud, iron ore pellet binder, as producing atlapulgite, bentonite raw material, and all is widely used at aspects such as construction work antiseepage, the underground water proof of environmental protection, fodder additives, washing auxiliary detergents.And sodium bentonite is owing to have the physical and chemical performance more superior than calcium-base bentonite, and its industrial application value is bigger, and range of application is wider, and wilkinite have the title of " omnipotent soil ", and utmost point purposes is widely at home and abroad all arranged.
By retrieval, document related to the present invention is: 1, Chinese patent publication number CN-1033948A 2, United States Patent (USP) U.S.P 3865240
Find out from above-mentioned document: the traditional method with calcium-base bentonite production sodium bentonite mainly contains two kinds both at home and abroad, and a kind of is wet method, promptly at Na
2CO
3Carry out the method for ion exchange reaction in the solution; Another kind is a semidrying, and promptly the moor ore deposit is with after light ash mixes, and the method for ion exchange reaction is finished in the ageing of banking up.Above-mentioned Chinese patent has been invented a kind of with the fragmentation of moor ore deposit, in the duplex stirring mixer, mix with light ash, in the duplex reactor, stand shearing strain again and finish ion exchange reaction, and produce the method for sodium bentonite after dry (or oven dry) grinding with certain pressure.Though conventional production methods is made a big improvement, still there is following defective: 1, need raw ore just crushing process and equipment, 2, need to mix through duplex stirring mixer and light ash, 3, need pressure and shearing deformation realization permutoid reaction in the duplex reactor, 4, need many with equipment, operational path long, still can not realize factory's serialization production well, 5, production cost is still higher.
The object of the present invention is to provide a kind of operation very simple, except that Raymond mill, do not need any other equipment, be suitable for the factory serialization fully and produce, but the removal of impurities of steady quality part, the cycle is short, cost is low uses process for producing sodium-base bentonite from calcium-base bentonite.
Purpose of the present invention is implemented by following technical scheme, its production method by select materials, airing, add ground caustic mill, the packing plurality of processes constitutes:
(1) select for use colloid index greater than 50ml/15g, expansion capacity is swollen greater than the natural calcium base of 4ml/g
Profit soil is made raw material; (2) raw material should be between 13%～18% through the moisture content after the airing, and lumpiness should be less than 1 centimetre; (3) with the raw material weight be light ash 2～3.5 (weight) % that the basis added 20 mesh sieves; (4) light ash is dissolved by moisture content residual in the raw material simultaneously with the raw material thorough mixing in Raymond mill, generates sodium bentonite, sends in the packing bag through selection by winnowing.The permutoid reaction formula is:
The moisture content of raw material is 15～17% before mill is gone in airing.
On the Raymond mill oscillating feeder, install and add the alkali hopper, light ash is directly by being contained in the hopper on the oscillating feeder, adding alkali number with control is that 2～3.5% flow enters Raymond mill (4R pendulum type ring roll pulverizer) with raw material, feed is given light ash again during bobbing machine work, when bobbing machine was not worked, neither feed was not given light ash yet.This method of alkali that evenly adds in proportion is for best.
Can regulate the size that adds alkali hopper discharge port according to the variation of raw materials quality, it is 2～3.5 (weight) % that control adds alkali number.
Establish an osculum at described Raymond mill mill body downside, impure mineral such as contained sand grains in the raw ore, the osculum that granularity is severed on Raymond mill greater than 2mm person is subjected to the effect of centrifugal force and wind-force and throws away, and when finishing ion exchange reaction raw material has been realized dry purification.Realized removing the purpose of partial impurities mineral.
The present invention does not need other equipment and production process, disposablely in Raymond mill finishes in ion exchange reaction, the material remaining water evaporates and removes multiple tracks production process such as partial impurities mineral, has both realized thoroughly that factory's serialization produced, and enhances productivity again.
The following describes principle of the present invention:
Become calcium-base bentonite and create Na exactly into the principle of sodium bentonite
2CO
3Ionization conditions, make Na
+Ca in ion and the calcium-base bentonite between the montmorillonite crystal layer
2+Ion generation permutoid reaction, and create the envrionment conditions of accelerating permutoid reaction.Its reaction formula is:
Production technique of the present invention has been created and has been promoted the requirement that ion exchange reaction is carried out fast: 1, Na
2CO
3Thereby dry powder can be dissolved the Na that produces enough concentration by moisture content residual in the wilkinite
+Ion; 2, the intensification effect of equipment operation generation has improved the temperature of permutoid reaction, thereby has accelerated the speed of permutoid reaction; 3, by the high speed spreading, its structure is subjected to the effect of high-shear deformation force to wilkinite in Raymond mill, has more promoted permutoid reaction to carry out fast; 4, one of reaction product CaCO
3Slightly water-soluble, limited the chance that permutoid reaction is carried out to opposite direction:
↓
Advantage of the present invention is as follows: 1, production method of the present invention is " dry method ", the soda ash that adds is powdery, used also unsaturation humidity of bentonite material (moisture 30～50%), but nearly dry material, production process does not have the waste lye discharging, the low amounts of dust that the course of processing produces is collected the non-environmental-pollution problem for bag process; 2, production unit is few, only needs a Raymond mill, need not any miscellaneous equipment, less investment, instant effect; 3, owing to disposablely in Raymond mill finish ion exchange reaction, evaporation residue moisture content, remove technological process such as partial impurities mineral, speed of response is fast, and operation is short, the production efficiency height; 4, with short production cycle, realized factory's serialization production fully, can form quick, a simple and direct automatic production line; 5, owing to the few energy consumption that reduced of use equipment, because operation is short, technology is simple thereby it is also few to produce required manpower, because speed of response is fast, reaction is thorough thereby consumption soda ash amount is also few, thereby production cost is reduced significantly, except that the cost that increases by 35 yuan of/ton left and right sides soda ash, the production cost with dry production calcium-base bentonite powder is as good as; 6, owing to fully provide the technology condition of thoroughly finishing permutoid reaction, and these conditions are easy to control, therefore, and good product quality but also stable not only; 7, utilized the water-holding power of nearly dried wilkinite self dexterously, the selection by winnowing ability of the centrifugal force-summing device that intensification effect that equipment operation self produces and material produce in equipment has realized that an equipment " dry method " finishes the technological process of reaction, evaporation, removal of impurities.
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a process flow sheet of the present invention.
The structural representation that Fig. 2 transforms Raymond mill for the present invention.
The contriver adopts colloid to Yulin, eastern suburb, Huhehaote City natural calcium base bentonite small-scale test nearly 100 times
Relevant index contrast before and after table 1. remodeling
Valency is greater than 50ml/15g, and expansion capacity carries out " dry method " remodeling greater than the natural calcium base bentonite of 4ml/g under the industrial production condition, all obtained high-quality sodium bentonite product.Now lift several examples as embodiments of the invention, relevant data is page table 1 as above.
| The embodiment numbering | Processing condition | Assay | Genotype | |||||||
| Colloid index ml/15g | Expansion capacity ml/g | X-diffraction d001A | Smectite content % | The pH value | Exchange capacity mmol/100g | |||||
| 1/2Ca 2+ | Na + | |||||||||
| 1 | Before the remodeling | Moisture 16% | 62 | 6 | 15.384 | 60 | 9.36 | 35.04 | 5.29 | Natural raw ore of calcium base bentonite |
| Behind the remodeling | Add 2.5% Na 2CO 3Moisture 10% | ＞100 | 36 | 12.558 | 70 | 10.50 | 10.06 | 53.77 | High-quality sodium bentonite product | |
| 2 | Before the remodeling | Moisture 15% | 50 | 4 | 15.390 | 55 | 8.9 | 34.30 | 4.98 | Natural raw ore of calcium base bentonite |
| Behind the remodeling | Add 3.0% Na 2CO 3Moisture 9.6% | ＞100 | 34 | 12.543 | 63 | 10.46 | 10.15 | 52.80 | High-quality sodium bentonite raw ore | |
On Raymond mill oscillating feeder 1, install and add alkali hopper 2, light ash is directly by being contained in the hopper 2 on the oscillating feeder 1, and regulate the size that adds alkali hopper 2 discharge ports according to the variation of raw materials quality, adding alkali number with control is that 2～3.5 (weight) % is that optimum quantity enters Raymond mill 3 (4R pendulum type ring roll pulverizer) with raw material, feed is given light ash again during bobbing machine work, when bobbing machine was not worked, neither feed was not given light ash yet.This method of alkali that evenly adds in proportion is for best.
Establish an osculum 4 at described Raymond mill 3 mill body downsides, impure mineral such as contained sand grains in the raw ore, granularity is subjected to the effect of centrifugal force and wind-force and throws away from osculum 4 greater than 2mm person, when finishing ion exchange reaction raw material has been realized dry purification.Realized removing the purpose of partial impurities mineral.
Claims (2)
1, a kind of process for producing sodium-base bentonite from calcium-base bentonite of using, by select materials, airing, add ground caustic mill, packing constitutes, it is characterized in that: (1) selects for use colloid index greater than 50ml/15g, expansion capacity is made raw material greater than the natural calcium base bentonite of 4ml/g; (2) raw material should be between 13%～18% through the moisture content after the airing, and lumpiness should be less than 1 centimetre; (3) with the raw material weight be light ash 2～3.5 (weight) % that the basis added 20 mesh sieves; (4) light ash is dissolved by moisture content residual in the raw material simultaneously with the raw material thorough mixing in Raymond mill, generates sodium bentonite, sends in the packing bag through selection by winnowing.
2, a kind of process for producing sodium-base bentonite from calcium-base bentonite of using according to claim 1 is characterized in that the moisture content of raw material before mill is gone in airing is 15～17%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97103231A CN1061946C (en) | 1997-03-31 | 1997-03-31 | Process for producing sodium-base bentonite from calcium-base bentonite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97103231A CN1061946C (en) | 1997-03-31 | 1997-03-31 | Process for producing sodium-base bentonite from calcium-base bentonite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1194940A CN1194940A (en) | 1998-10-07 |
| CN1061946C true CN1061946C (en) | 2001-02-14 |
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| CN97103231A Expired - Fee Related CN1061946C (en) | 1997-03-31 | 1997-03-31 | Process for producing sodium-base bentonite from calcium-base bentonite |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355980C (en) * | 2005-11-11 | 2007-12-19 | 长兴仁恒精制膨润土有限公司 | Tech. for producing retention and drainage aid microgranule |
| US10081574B2 (en) | 2015-11-30 | 2018-09-25 | King Fahd University Of Petroleum And Minerals | Process for converting calcium bentonite to sodium bentonite |
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|---|---|---|---|---|
| DE102005022075A1 (en) * | 2005-05-12 | 2006-11-16 | Süd-Chemie AG | Fast disintegrating Betonitgranulate |
| CN100463853C (en) * | 2005-12-30 | 2009-02-25 | 中国地质大学（武汉） | Method for preparing high-purity montmorillonite |
| CN101130433B (en) * | 2006-08-25 | 2012-01-18 | 贾成林 | Method of producing high sinkingproof organobentonite |
| CN101774596B (en) * | 2010-01-13 | 2012-11-14 | 中国非金属矿工业公司 | Cheto-type bentonite sodium modification method and device thereof |
| CN101757887B (en) * | 2010-03-08 | 2012-07-04 | 厦门大学 | Method for increasing COD-based absorption capacity of calcium-based bentonite |
| CN102965086B (en) * | 2012-05-03 | 2015-08-19 | 董宪姝 | A kind of drilling mud preparation method for 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 |
| 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 |
| CN109971491A (en) * | 2019-04-26 | 2019-07-05 | 王勇 | A kind of engineering slurry bentonite in powder and its production and processing method |
| CN112047354A (en) * | 2019-06-06 | 2020-12-08 | 湖南博世科环保科技有限公司 | Sodium bentonite, preparation method thereof and ultrasonic roller-pair rolling machine |
| CN110606494A (en) * | 2019-09-25 | 2019-12-24 | 宣化县立石膨润土加工有限公司 | Method for producing sodium bentonite by using calcium bentonite |
| CN112960926A (en) * | 2021-02-24 | 2021-06-15 | 赤峰市奇运蒙脱石精细化工有限公司 | Bentonite preparation process with short sand mulling time |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85105253A (en) * | 1985-07-11 | 1987-04-15 | 地质矿产部探矿工程研究所 | Process for artificial sodium based bentonite |
| CN1033948A (en) * | 1988-01-05 | 1989-07-19 | 周运臣 | Produce method with the calcium-base bentonite sodium bentonite |
-
1997
- 1997-03-31 CN CN97103231A patent/CN1061946C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85105253A (en) * | 1985-07-11 | 1987-04-15 | 地质矿产部探矿工程研究所 | Process for artificial sodium based bentonite |
| CN1033948A (en) * | 1988-01-05 | 1989-07-19 | 周运臣 | Produce method with the calcium-base bentonite sodium bentonite |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355980C (en) * | 2005-11-11 | 2007-12-19 | 长兴仁恒精制膨润土有限公司 | Tech. for producing retention and drainage aid microgranule |
| US10081574B2 (en) | 2015-11-30 | 2018-09-25 | King Fahd University Of Petroleum And Minerals | Process for converting calcium bentonite to sodium bentonite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1194940A (en) | 1998-10-07 |
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