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Dry-process method for producing bentonite

A production method and technology of bentonite, applied in the field of deep processing of bentonite materials, can solve problems such as difficulty in large-scale and continuous production, large investment in equipment, complicated process, etc., and achieve the effect of easy large-scale production, low investment and simple process

Inactive Publication Date: 2003-10-08
SHOUGANG CORPORATION
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  • Summary
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Problems solved by technology

[0003] In order to overcome the problems of complex process, large equipment investment, high cost and difficulty in realizing large-scale and continuous production in the existing wet method of producing organic bentonite

Method used

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  • Dry-process method for producing bentonite
  • Dry-process method for producing bentonite

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Embodiment Construction

[0007] 1. Mineral dressing: Use natural calcium-based bentonite with good purity, its montmorillonite content is greater than 85%, whiteness is greater than 80%, cation exchange capacity is greater than 85mmol / 100g, and sandstone is less.

[0008] 2. Primary crushing: primary crushing of bentonite to less than 4mm.

[0009] 3. Selection: add twice as much water as bentonite, stir, and discard impurities such as sand and stone at the bottom.

[0010] 4. Adding soda ash solution: Add the selected bentonite into the kneader, and add 2-3% soda ash. The soda ash powder must meet the GB210-63 standard. Heating to 60°C, stirring and mixing, so that the calcium-based bentonite is modified into sodium-based bentonite.

[0011] 5. Add activator: Add 2-3% activator in the mixer, stir and mix. The purpose of adding activator is to facilitate the adsorption of covering agent on the surface of montmorillonite mineral.

[0012] 6. Adding covering agent quaternary ammonium salt: for the ben...

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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

Technical field [0001] The invention belongs to a deep processing method of bentonite materials, and is mainly suitable for artificially modifying natural calcium-based bentonite into organic bentonite through a dry process. Background technique [0002] Bentonite is a clay rock with montmorillonite as the main mineral component. It is known as "universal clay". It has been widely used in metallurgy, foundry, chemical industry, petroleum, environmental protection, agriculture and many other industries. A very important non-metallic ore. my country is rich in bentonite resources, but most of them are coarse-grade products with low technical content, such as calcium-based bentonite. More than 15,000 yuan / ton, widely used in paints, inks, coatings, drilling mud and other oily products. The development and development of organic bentonite products in my country has just started. There are only 3-4 manufacturers of organic bentonite in the country. Sanding, sodiumization, coveri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/34C08K9/00C08K9/04
Inventor 刘新兵杜烨
Owner SHOUGANG CORPORATION
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