Synthetic mica prepared from calcined talcum and preparation method and processing method of fluorophlogopite powder and fluorophlogopite pearlescent pigment

Abstract

The invention discloses a kind of synthetic mica prepared from calcined talcum and other raw materials and a wet processing method of fluorophlogopite powder and fluorophlogopite pearlescent pigment by using the synthetic mica as raw material. The mica is prepared by fusing five raw materials--calcined talcum, heavy magnesium oxide, potassium fluosilicate, alumina and potassium carbonate. The preparation method of the mica comprises the following steps: heating raw materials with a electric furnace to fuse the raw materials, then keeping temperature, reducing temperature, cooling naturally toobtain mica plates; then crushing the mica plates with a gear high pressure crusher, then grinding and repairing the obtained product with a special grinder to obtain fluorophlogopite powder; then using the fluorophlogopite powder to prepare synthetic fluorophlogopite pearlescent pigment through the hydrolysis method. The mica prepared by the method of the invention is high purity transparent monocrystals, the surface is smooth, the mica is well-crystallized and cleavage flake is thin; the prepared fluorophlogopite powder has high diameter-thickness ratio, fine and smooth hand feeling and highwhiteness; the prepared fluorophlogopite pearlescent pigment has strong luster and niveous appearance.

Description

technical field [0001] The invention relates to a synthetic mica product and a processing method, in particular to a synthetic mica prepared from raw materials containing calcined talc and a processing method for preparing wet-process fluorphlogopite mica powder and fluorphlogopite pearlescent pigments by using the synthetic mica as a raw material . Background technique [0002] Mica is a general term for a class of layered silicate minerals. Natural mica mainly includes muscovite KAl 2 (AlSi 3 o 10 )(OH) 2 and Phlogopite KMg 3 (AlSi 3 o 10 )(OH) 2 , they all contain structural water, so the use temperature is not high, the former is about 550 ° C, and the latter is 880 ° C. Synthetic mica does not contain structural water. Use F in synthetic mica - Ions replace (OH) in natural mica - Ions, so the long-term use temperature of synthetic mica can reach 1100 ℃. In the prior art, synthetic mica is a high-temperature-resistant insulating material made of five chemical...

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Problems solved by technology

[0004] One of the purposes of the present invention is to overcome the deficiencies in the existing synth

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