Acidified bentonite

A technology of bentonite and dilute sulfuric acid, applied in the direction of aluminum silicate, silicate, etc., can solve the problems of no auxiliary modification treatment and can not comprehensively improve the quality of bentonite products.

Active Publication Date: 2014-08-13
江苏世澳非金属应用科技有限公司
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AI Technical Summary

Problems solved by technology

[0004] After the acidification treatment, there is no subsequent auxiliary modi

Method used

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Embodiment Construction

[0026] Below in conjunction with embodiment the present invention will be further described:

[0027] 1. The bentonite ingredients after acidification are composed of the following components by weight percentage: 94.5% of bentonite semi-finished products after acidification, 2.3% of instant sodium silicate, 2% of polyvinyl alcohol, 1% of hydroxypropyl methylcellulose and 0.2% of sodium carbonate %.

[0028] 2. The production method of acidified bentonite: input the acidified bentonite ingredients into a mill for grinding, the particle fineness is ≤0.074 mm, and the powder after grinding is the finished product of acidified bentonite.

[0029] 3. The production method of semi-finished bentonite after acidification: (1) first input the naturally weathered bentonite into the running mixer, then slowly add dilute sulfuric acid into the naturally weathered bentonite for acidification; (2) put the acidified bentonite, It is extruded into bentonite flakes by a pair of rollers, and ...

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Abstract

The invention discloses an acidified bentonite. The technical scheme is as follows: the acidified bentonite is composed of bentonite, sulfuric acid, instant sodium silicate, polyvinyl alcohol, hydroxypropyl methylcellulose and sodium carbonate. The production method of the acidified bentonite comprises the following steps: inputting acidified bentonite materials into a mill, and milling into powder, thereby obtaining the acidified bentonite. The composite proportioning is performed after acidification, thereby avoiding the chemical reaction between the sulfuric acid and the instant sodium silicate, polyvinyl alcohol, hydroxypropyl methylcellulose and sodium carbonate, fully displaying the respective characteristics of the raw materials in the formula, and ensuring the inherent quality of the acidified bentonite. The acidified bentonite has favorable adsorbability, high-temperature stability and lubricating property, and the water absorptivity, colloid index, plasticity, expansion coefficient, colloid viscosity and thixotropy are greatly enhanced. The acidified bentonite is suitable for producing products in the fields of paints, aviation, metallurgy, chemical fibers, petroleum, firefighting and the like.

Description

technical field [0001] The invention relates to acidification treatment, in particular to an acidified bentonite. Background technique [0002] my country is rich in bentonite resources. Most bentonite mines are mainly calcium-based bentonite, and low-grade calcium-based bentonite is the majority. In order to improve the performance of calcium-based bentonite, it is necessary to acidify and modify calcium-based bentonite. The conventional method for acidifying and modifying calcium-based bentonite is to add sulfuric acid directly into the ore of calcium-based bentonite, dry and grind after acidification. [0003] In the bentonite mining area, excavators are used to mine bentonite raw ore mechanized. What is excavated is a kind of dense massive bentonite raw ore. The bentonite raw ore is large in volume and cannot be directly used for acidification treatment. Crusher is often used to crush it into fine particles for acidification. Handling, it is easy to destroy the crystal ...

Claims

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Application Information

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IPC IPC(8): C01B33/26
Inventor 黄飞翔黄允金陈丽萍许盛英许庆华蒋文兰
Owner 江苏世澳非金属应用科技有限公司
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