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Method for preparing superfine calcinated talc powder

A technology of talc powder and calcination, which is applied in chemical instruments and methods, silicates, inorganic chemistry, etc., to achieve the effects of convenient feeding and discharging, simple calcination process and high production efficiency

Inactive Publication Date: 2009-02-25
刘兴良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Ultrafine calcined talcum powder has more excellent characteristics, but so far there is no effective method to manufacture this product in large quantities and efficiently

Method used

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Experimental program
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Embodiment Construction

[0013] Superfine calcined talcum powder preparation method, comprises the following steps

[0014] The first step of calcining: calcining uncalcined talc powder and talc particles at a temperature between 900°C and 1350°C to remove crystal water; then grinding the calcined talc powder and talc particles into calcined talc powder with a mesh size of 200 or more;

[0015] The second step of grinding and peeling step: add calcined talc powder that has been ground into 200 mesh or more into water and stir to make a slurry. The concentration of the slurry is between 40% and 60%; Mesh - 10000 mesh;

[0016] The third step is to collect and dry the step: filter and collect the ultra-fine grinding slurry to 3000 mesh to 10000 mesh, and dry it;

[0017] Step 4 Dispersion: Disperse the dried superfine calcined talcum powder to form a finished product.

[0018] Wherein, the peeling machine can be used in series according to the product fineness requirements.

[0019] Wherein, the disi...

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PUM

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Abstract

The invention discloses a process for preparing ultra-fine calcinated talcum powder, wherein talcum is subject to calcinations, grinding, collection, drying and granulating. The grain size of the powder is between 3000-10000 meshes.

Description

technical field [0001] The invention relates to a method for producing superfine calcined talc powder. Background technique [0002] Talc is a hydrous magnesium silicate mineral with a layered structure, the chemical formula is Mg 3 [Si 4 o 10 ](OH) 2 , expressed as an oxide 3MgO 4SiO 2 ·H 2 O. It is named for its soft texture and strong greasy feeling. Talc has high electrical insulation, heat insulation, high melting point and strong adsorption performance for oil, so it is widely used in industry. And with the development of industry, the dosage is increasing and the scope of application is expanding day by day. Especially calcined talcum powder is widely used in ceramics, electronic components, plastics, paint, electric porcelain, rubber, medicine, food and other industries. Development of promising multifunctional materials. [0003] Ultrafine calcined talcum powder has more excellent characteristics, but so far there is no effective method to manufacture this ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/20C01B33/22C01B33/38C09C1/28C09C3/00
Inventor 刘兴良
Owner 刘兴良
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