Method and device for artificially synthesizing large-size fluorophlogopite

A fluorophlogopite, artificial synthesis technology, applied in chemical instruments and methods, self-solidification method, single crystal growth and other directions, can solve the problems of difficult effective control of internal heat method, low mica purity, low quality and finished product qualification rate, etc. Achieve obvious economic and social benefits, broad market application prospects, and improve the effect of quality pass rate

Active Publication Date: 2019-08-13
鲁米星特种玻璃科技股份有限公司
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Problems solved by technology

Although after years of research, the preparation of large-sized fluorophlogopite still faces a huge challenge. For a long time, the industrial preparation of fluorophlogopite has been prepared by internal heat method. The pass rate and great difficulty, and the preparation of synthetic fluorophlogopite by internal heat method needs to go through operations such as masonry furnace body, electrode installation, crystallization, furnace dismantling, drilling, blasting, etc. The process is long, complicated, and the quality And the qualified rate of finished products is low, and the operating condition

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  • Method and device for artificially synthesizing large-size fluorophlogopite
  • Method and device for artificially synthesizing large-size fluorophlogopite
  • Method and device for artificially synthesizing large-size fluorophlogopite

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[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] A method for artificially synthesizing large-size fluorphlogopite, comprising the following components by weight:

[0026]

[0027] The raw material requirements for synthesizing large-sized fluorphlogopite are: the purity of quartz sand is ≥99.9%, the oversize of 150μm sieve is less than 1%, the undersize of 45μm is less than 30%, Fe 2 O 3 The content is less than 0.01wt%, the purity of alumina powder is ≥99.0%, the averag...

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Abstract

The invention discloses a method and device for artificially synthesizing large-size fluorophlogopite. The large-size fluorophlogopite is prepared from, by weight, 100 parts of quartz sand (SiO2), 29.1 parts of alumina powder (Al2O3), 28.3 parts of potassium carbonate (K2CO3), 5.3 parts of potassium nitrate (KNO3), 68.3 parts of fused magnesite (MgO) and 37.9 parts of potassium fluosilicate (K2SiF6). By changing the temperature field of the high-temperature area and the low-temperature area of a growth device through a temperature equalizing body, the temperature in a furnace is more uniform;by designing a large-size platinum crucible and a large-size corundum crucible, using long crystals as seed crystals for transverse incubation and adjusting the uniform transverse temperature field and the proper longitudinal temperature gradient, large-size high-quality fluorophlogopite crystals are prepared. The quality percent of pass of large-size synthetic mica can be greatly improved, the problem that materials are desiderated in the high-temperature insulation, high-frequency medium, high-pressure corrosion resistance, biological research, high-energy physics and other fields is solved,and the fluorophlogopite has remarkable economic benefits and social benefits and has broad market application prospects.

Description

technical field [0001] The invention relates to the technical field of crystal material growth or preparation, in particular to a method and a device for artificially synthesizing large-size fluorophlogopite. Background technique [0002] Synthetic fluorphlogopite is artificial mica, and the molecular formula of its single crystal is KMg 3 (AlSi 3 O 10 )F 2 , belonging to the monoclinic crystal system, is a typical layered silicate material, with a temperature resistance of more than 1200 ℃. It is a layered silicate crystal grown from chemical raw materials or mineral raw materials at high temperature through strict process conditions and material ratio, high temperature reaction, melting, cooling and forced crystallization. Synthetic fluorphlogopite has a book-like structure, which has high tensile strength and compressive strength, can withstand large pressure, can be cleaved and peeled, has good flatness, is not easy to deform and age, and is resistant to acid and alk...

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Application Information

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IPC IPC(8): C30B29/34C30B11/00
CPCC30B11/00C30B29/34
Inventor 陈玉栋陈嘉慧张芬香
Owner 鲁米星特种玻璃科技股份有限公司
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