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Process for preparing high-purity quartz from vein quartz

A technology of vein quartz and quartz, which is applied in the field of preparation of high-purity ultra-fine British materials from vein quartz, can solve the problems such as the impurity is not effectively and precisely removed, the inclusion impurities are not effectively and precisely removed, and it is difficult to meet the application requirements of high-tech products, etc. The effect of roasting time

Inactive Publication Date: 2013-05-08
刘少云
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Problems solved by technology

There are mainly impurities such as non-metallic ore potassium, albite, aluminum, mica, etc., and metal ore hematite, limonite, siderite and pyrite. Therefore, the disadvantages of using this method are: ①. Inclusion impurities have not been effectively and precisely removed; ②, impurities such as hematite, limonite, siderite and pyrite have not been effectively and precisely removed; ③, non-metallic mineral impurities that are difficult to dissolve in acid have not been effectively and precisely removed removal; ④, the entire production process has poor control over product quality stability, and product quality is unstable; ⑤, SiO 2 The content is 99.95%, which is difficult to meet the application requirements of high-tech products

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  • Process for preparing high-purity quartz from vein quartz

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the process flow diagram of the present invention.

[0032] 1. The content of Sio2 ≥ 98.26% ~ Sio2 ≥ 99.2% of the vein quartz raw ore in Fengxin County, Jiangxi Province is used, the impurity content is 1.5 ~ 0.7%, and the raw ore size is ≤ 10cm;

[0033] 2. Laser crushing is used to crush the raw ore with a size of ≤10cm to 0.5-1.5cm, so that the associated minerals are separated from the quartz, and the quartz particles are broken down into countless tiny holes;

[0034] 3. Using electromagnetic roasting, place the quartz particles crushed to 0.5-1.5cm in an electromagnetic roasting furnace, and use the waste heat of laser crushing to roast at a roasting temperature of 500-700°C for 1-1.5 hours to make the quartz ore contain weak Magnetic iron minerals (hematite, limonite, siderite and pyrite, etc.) become strongly magnetic magnetite;

[0035] 4. Water quenching is adopted, and the qu...

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Abstract

The invention discloses a process for preparing high-purity quartz from vein quartz, which comprises the steps of raw vein quartz ore selection, laser fracturing, electromagnetic roasting, water quenching, pulverization and grading, high-gradient magnetic separation, electrostatic separation, impurity removal based on a microwave complexing method, deionized water cleaning and drying. According to the invention, the process flow and structure are reasonable, the technology is advanced, efficient and easy to control, the impurity removal is targeted, high in quality index and favorable in stability; and the high-purity ultrafine quartz material can be used in such high and new technical fields as novel electric light sources, high-insulation sealing, aerospace instruments, war industry technical products, micro electronics, high-grade optical glass, quartz crucible main materials, quartz tubes and quartz rods.

Description

technical field [0001] The invention relates to a process for preparing high-purity quartz from vein quartz, in particular to a method for preparing high-purity ultrafine material from vein quartz. Background technique [0002] The high-purity quartz material has unique physical and chemical properties, hard, wear-resistant, and chemically stable silicate minerals, with a hardness of 7, brittle without cleavage, a shell-like fracture, and a density of 2.65. Its thermal and mechanical properties have Obvious anisotropy, insoluble in acid, slightly soluble in KOH solution, melting point 1750°C. In particular, its internal molecular chain structure, crystal shape and lattice change rules make it have high temperature resistance, small thermal expansion coefficient, high insulation, corrosion resistance, piezoelectric effect, resonance effect and its unique optical properties, which are widely used in many high-tech industries. products are playing an increasingly important rol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/12
Inventor 刘少云刘侠
Owner 刘少云
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