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Method for preparing organic modified silicate mineral clay

A technology of silicate minerals and clay, applied in the field of clay silicates, can solve the problems of undisclosed specific components of modifiers, lack of necessary performance indicators of modified attapulgite, etc., and achieve the effect of improving the grade

Inactive Publication Date: 2008-07-30
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN1508197 discloses a preparation method of surface-modified attapulgite reinforcing rubber material, that is, using self-made new cationic surface modifier to organically modify high-grade attapulgite raw ore with attapulgite content of 82% in Jiangsu area. It aims to improve the compatibility and filler effect of attapulgite in rubber, but the specific composition of the modifier is not disclosed, and there is also a lack of necessary performance indicators for modified attapulgite

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  • Method for preparing organic modified silicate mineral clay
  • Method for preparing organic modified silicate mineral clay

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Preparation of Organically Modified and Purified Attapulgite

[0043] The first step is primary purification using a spiral classifier

[0044] According to the ratio of adding 4L of water per kg of attapulgite raw ore, the attapulgite raw ore and water are added to the ball mill for grinding, and the formed mud overflows through the spiral classifier to remove impurity minerals with a particle size larger than 0.5mm, and then is sent into the mixing chamber by a mud pump. bucket, add the surfactant sodium polyacrylate and sodium hexametaphosphate at the same time, and stir at a high speed for 30 minutes to obtain highly dispersed primary purified attapulgite slurry. The amount of sodium polyacrylate added is 0.01% of the mass of attapulgite raw ore, The amount of sodium metaphosphate added is 0.1% of the mass of attapulgite raw ore;

[0045] The second step is to use a cyclone classifier for secondary purification

[0046] The highly dispersed and primary purified at...

Embodiment 2

[0060] Preparation of Purified Sepiolite by Organic Modification

[0061] The first step is primary purification using a spiral classifier

[0062] According to the ratio of adding 10L of water per kg of sepiolite raw ore, add sepiolite raw ore and water to the ball mill for grinding, and the formed mud overflows through the spiral classifier to remove impurity minerals with a particle size greater than 0.5mm, and then is sent into the mixing chamber by a mud pump Bucket, add surfactant sodium polyacrylate and sodium hexametaphosphate at the same time, after high-speed stirring for 30 minutes, obtain highly dispersed primary purified sepiolite pulp, the addition of sodium polyacrylate is 0.1% of the mass of sepiolite raw ore, six The addition of sodium metaphosphate is 0.5% of the quality of sepiolite raw ore;

[0063] The second step is to use a cyclone classifier for secondary purification

[0064] The highly dispersed primary purified sepiolite slurry prepared in the firs...

Embodiment 3

[0078] Preparation of Organic Modified Purified Bentonite

[0079] The first step is primary purification using a spiral classifier

[0080] According to the ratio of adding 15L of water per kg of bentonite raw ore, put bentonite raw ore and water into a ball mill for grinding, and the formed mud overflows through a spiral classifier to remove impurity minerals with a particle size greater than 0.5mm, and then is sent into the mixing tank through a mud pump. Surfactant sodium polyacrylate and sodium tripolyphosphate, after stirring at high speed for 30 minutes, obtain highly dispersed primary purified bentonite pulp, the addition of sodium polyacrylate is 2.5% of the mass of bentonite raw ore, and the addition of sodium hexametaphosphate is 2.5% of bentonite 2.5% of the raw ore mass;

[0081] The second step is to use a cyclone classifier for secondary purification

[0082] The highly dispersed primary purified bentonite pulp prepared in the first step is sent into the cyclo...

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Abstract

The invention relates to a preparation method of organic modified silicate mineral clay, which belongs to the clay silicate technical field. The preparation method adopts the specific steps that a spiral classifier is utilized for primary purification, a cyclone separator is utilized for secondary purification, gravity sorting equipment is utilized for tertiary purification, flocculation and concentration, organic modification, drying and superfine grinding, and finally micropowder of organic modified silicate mineral clay with 2.5 to 6.0 average particle diameters is produced. The method realizes one step completion of the purification and modification technical processes of the silicate mineral clay, improves the quality of silicate mineral clay products, and has low requirements on the equipment; the process is simple, the condition is temperate, and the investment is low.

Description

technical field [0001] The technical solution of the invention relates to the technical field of clay silicate, in particular to the preparation method of organically modified silicate mineral clay. Background technique [0002] As a reinforcing and toughening filler for polymer composites, silicate mineral clay has been widely used in the fields of polymer chemistry such as rubber, plastics, and resins. In addition, natural clay minerals have the advantages of abundant reserves, wide distribution, and low price, especially With the continuous innovation of surface modification technology, the research and development of silicate mineral clay used as a new variety of special-purpose filler has become the focus of scientific and technological workers. [0003] However, due to the composition, crystal structure, particle shape, particle size distribution and aggregation state of natural silicate mineral clay, its performance varies greatly with the place of origin, the geologi...

Claims

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Application Information

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IPC IPC(8): C09C3/08C09C1/28C01B33/40
Inventor 汤庆国梁金生薛刚李立伟
Owner HEBEI UNIV OF TECH
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