CN110606494A - Method for producing sodium bentonite by using calcium bentonite - Google Patents
Method for producing sodium bentonite by using calcium bentonite Download PDFInfo
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- CN110606494A CN110606494A CN201910908784.0A CN201910908784A CN110606494A CN 110606494 A CN110606494 A CN 110606494A CN 201910908784 A CN201910908784 A CN 201910908784A CN 110606494 A CN110606494 A CN 110606494A
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- bentonite
- raw ore
- calcium
- sodium bentonite
- producing sodium
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
- C01B33/38—Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type
- C01B33/40—Clays
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention discloses a method for producing sodium bentonite by using calcium bentonite, which is characterized by comprising the following steps: drying the calcium-based bentonite raw ore until the water content is 13-18%, adding 20 kg of alkali into each 1000 kg of raw ore, uniformly stirring the raw ore by a stirrer, crushing the large blocks by a crusher, adding water, uniformly stirring the mixture, feeding the mixture into an electric heating extruder, extruding the mixture for 15-30 minutes at the extruder power of over 300W and the pressing temperature of over 80 ℃, and finishing the modification, wherein the expansion ratio is 1: 30. The invention is mainly suitable for a mode of artificially modifying natural modified bentonite into sodium bentonite by extrusion, the successfully modified sodium bentonite is suitable for products such as paint, putty powder and the like and is used as an adhesive.
Description
Technical Field
The invention belongs to the technical field of bentonite in building materials, and particularly relates to a method for producing sodium bentonite by using calcium bentonite.
Background
The amount of the sodium bentonite stored in nature is quite small, so most of the sodium bentonite seen by people is artificially prepared, the sodium bentonite which is prepared by the people is modified by an operation process, and the natural bentonite modified into the sodium bentonite has various modification methods, wherein the modification methods comprise two types of activation methods and a modifier adding method, and the two types of activation methods can realize the modification of the natural bentonite; the activation method mainly comprises an acid activation method, a high-temperature roasting method, a microwave activation method, a salt activation method, a hydrogenation method, a sodium treatment method, an oxidation method, a reduction method and the like, and the modifier addition method mainly comprises an inorganic modification method, an organic modification method, an inorganic/organic composite modification method and the like; the activating method is common, the activating method is to activate the bentonite by using some modified products, generally, the activating method is much simpler than the modifying agent method, and therefore, the activating method is widely used by people at present.
The method generally has the defects of complex process, more additives and high cost.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method for producing sodium bentonite by using calcium bentonite, which has the advantages of simple process method, less additives, low cost and quick processing.
In order to realize the purpose, the invention is realized by adopting the following technical scheme: a method for producing sodium bentonite by using calcium bentonite is characterized in that: the method is realized by the following steps:
1) drying the calcium bentonite raw ore to water content of 13-18%;
2) adding 20 kg of alkali into each 1000 kg of raw ore, and uniformly stirring the raw ore by using a stirrer;
3) crushing the large blocks in a crusher, adding water, stirring uniformly, feeding into an electric heating extruder, extruding for 15-30 minutes at a pressing temperature of more than 80 ℃ under the power of more than 300W, and then finishing modification with an expansion ratio of 1: 30.
The method for producing sodium bentonite by using calcium bentonite is characterized by comprising the following steps: the standard of the water added in the step 3) is 20-25% of the weight of the materials in the step 2).
The invention is mainly suitable for a mode of artificially modifying natural modified bentonite into sodium bentonite by extrusion, the successfully modified sodium bentonite is suitable for products such as paint, putty powder and the like and is used as an adhesive.
Detailed Description
Example 1
A method for producing sodium bentonite by using calcium bentonite is characterized in that: the method is realized by the following steps:
1) drying the calcium bentonite raw ore to water content of 13%;
2) adding 20 kg of alkali into each 1000 kg of raw ore, and uniformly stirring the raw ore by using a stirrer;
3) crushing the large blocks in a crusher, adding 20% of water, uniformly stirring, feeding into an electric heating extruder, extruding for 15 minutes at a pressing temperature of more than 80 ℃ under the power of more than 300W, and then finishing modification, wherein the expansion ratio is 1: 30.
Example 2
A method for producing sodium bentonite by using calcium bentonite is characterized in that: the method is realized by the following steps:
1) drying the calcium bentonite raw ore to water content of 15%;
2) adding 20 kg of alkali into each 1000 kg of raw ore, and uniformly stirring the raw ore by using a stirrer;
3) crushing the large blocks in a crusher, adding 23% of water, uniformly stirring, feeding into an electric heating extruder, extruding for 22 minutes at a pressing temperature of more than 80 ℃ under the power of more than 300W, and then finishing modification, wherein the expansion ratio is 1: 30.
Example 3
A method for producing sodium bentonite by using calcium bentonite is characterized in that: the method is realized by the following steps:
1) drying the calcium bentonite raw ore to water content of 18%;
2) adding 20 kg of alkali into each 1000 kg of raw ore, and uniformly stirring the raw ore by using a stirrer;
3) the large blocks are crushed in a crusher, 25 percent of water is added, the mixture is uniformly stirred, the mixture enters an electric heating extruder, the power of the extruder is more than 300W, the pressing temperature is more than 80 degrees, the modification can be completed after the extrusion is completed for 30 minutes, and the expansion ratio is 1: 30.
The invention is mainly suitable for a mode of artificially modifying natural modified bentonite into sodium bentonite by extrusion, and the sodium bentonite after successful modification is suitable for products such as paint, putty powder and the like and is used as an adhesive.
Claims (2)
1. A method for producing sodium bentonite by using calcium bentonite is characterized in that: the method is realized by the following steps:
1) drying the calcium bentonite raw ore to water content of 13-18%;
2) adding 20 kg of alkali into each 1000 kg of raw ore, and uniformly stirring the raw ore by using a stirrer;
3) crushing the large blocks in a crusher, adding water, stirring uniformly, feeding into an electric heating extruder, extruding for 15-30 minutes at a pressing temperature of more than 80 ℃ under the power of more than 300W, and then finishing modification with an expansion ratio of 1: 30.
2. The method for producing sodium bentonite according to claim 1, wherein: the standard of the water added in the step 3) is 20-25% of the weight of the materials in the step 2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910908784.0A CN110606494A (en) | 2019-09-25 | 2019-09-25 | Method for producing sodium bentonite by using calcium bentonite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910908784.0A CN110606494A (en) | 2019-09-25 | 2019-09-25 | Method for producing sodium bentonite by using calcium bentonite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110606494A true CN110606494A (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910908784.0A Withdrawn CN110606494A (en) | 2019-09-25 | 2019-09-25 | Method for producing sodium bentonite by using calcium bentonite |
Country Status (1)
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| CN (1) | CN110606494A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1194940A (en) * | 1997-03-31 | 1998-10-07 | 孙忠 | Process for producing sodium-base bentonite from calcium-base bentonite |
| CN1724355A (en) * | 2005-06-28 | 2006-01-25 | 浙江三鼎科技有限公司 | Process for preparing bentonite based sodium with high expension performance by drying method |
| CN103626196A (en) * | 2013-12-09 | 2014-03-12 | 湖北中非膨润土有限公司 | Fine sodium modification method and device for bentonite |
| US20170152184A1 (en) * | 2015-11-30 | 2017-06-01 | King Fahd University Of Petroleum And Minerals | Method of producing sodium bentonite |
| CN109264732A (en) * | 2018-09-26 | 2019-01-25 | 芜湖市鹏磊新材料有限公司 | It is a kind of to have the function of reactivity preparation method for bentonite |
| CN109422269A (en) * | 2017-08-24 | 2019-03-05 | 中国石油化工股份有限公司 | A kind of preparation method of sodium bentonite |
-
2019
- 2019-09-25 CN CN201910908784.0A patent/CN110606494A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1194940A (en) * | 1997-03-31 | 1998-10-07 | 孙忠 | Process for producing sodium-base bentonite from calcium-base bentonite |
| CN1724355A (en) * | 2005-06-28 | 2006-01-25 | 浙江三鼎科技有限公司 | Process for preparing bentonite based sodium with high expension performance by drying method |
| CN103626196A (en) * | 2013-12-09 | 2014-03-12 | 湖北中非膨润土有限公司 | Fine sodium modification method and device for bentonite |
| US20170152184A1 (en) * | 2015-11-30 | 2017-06-01 | King Fahd University Of Petroleum And Minerals | Method of producing sodium bentonite |
| CN109422269A (en) * | 2017-08-24 | 2019-03-05 | 中国石油化工股份有限公司 | A kind of preparation method of sodium bentonite |
| CN109264732A (en) * | 2018-09-26 | 2019-01-25 | 芜湖市鹏磊新材料有限公司 | It is a kind of to have the function of reactivity preparation method for bentonite |
Non-Patent Citations (1)
| Title |
|---|
| 祁根德等: "钙基膨润土钠化改型及其应用", 《化学建材》 * |
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Application publication date: 20191224 |