Ultra-pure color-spot-free high-end fully-transparent quartz material and preparation method and application thereof

A technology of transparent quartz and quartz materials, which is applied in the field of ultra-pure non-color spot high-grade fully transparent quartz materials and its preparation, can solve the problems of blue spots in quartz glass ingots, inability to remove hydroxyl groups, high impurity content, etc., and achieve simple operation, environmental protection, super The effect of pure high-grade fully transparent quartz material without color spots, large amount and low impurity content

Inactive Publication Date: 2019-03-01
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide an ultra-pure non-alcoholic powder with low hydroxyl content and few impurities in view of the deficiency that the existing domestic quartz sand has high hydroxyl content and high B and P impurity content, resulting in blue spots in the prepared quartz glass ingot. Stained high-grade fully transparent quartz material
[0009] Another technical problem to be solved by the present invention is to provide an ultra-pure and colorless crystal for quartz glass ingots prepared by ordinary domestic quartz silicon ore in view of the deficiency that the preparation process of ultra-pure, colorless, and high-grade fully transparent quartz materials in the prior art cannot remove hydroxyl groups. The purification process of spot high-grade fully transparent quartz material, this process method can realize the industrial scale production of ultra-pure non-color spot high-grade fully transparent quartz material (quartz sand), completely use domestic raw materials, low cost and stable technical effect

Method used

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  • Ultra-pure color-spot-free high-end fully-transparent quartz material and preparation method and application thereof
  • Ultra-pure color-spot-free high-end fully-transparent quartz material and preparation method and application thereof
  • Ultra-pure color-spot-free high-end fully-transparent quartz material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1 Preparation of ultra-pure high-grade fully transparent quartz material without color spots

[0043] S1. Selected quartz silicon ore: Repeated ICP analysis and comparison of domestic quartz silicon ore, screened out that the total content of alkali metals is less than 320mg / kg, the total content of gas-liquid inclusions is less than 2000mg / kg, and the total content of B and P is less than 38mg / kg of quartz silica ore, soak the quartz silica ore with 1% hydrochloric acid at 60°C for 2 hours, and then quickly rinse with a large amount of deionized water to obtain the crude quartz silica ore;

[0044] S2. Water quenching: acid leaching the crude quartz silicon ore obtained in step S1, heating it to 600°C, and then quickly putting it into water to explode for 5 seconds, removing a large amount of gas-liquid inclusions, and obtaining crude product particles;

[0045] S3. Acid leaching: pulverize the crude product particles obtained in step S2 through a Raymond mill,...

Embodiment 2

[0051] Example 2 Preparation of ultra-pure high-grade fully transparent quartz material without color spots

[0052] S1. Selected quartz silicon ore: Repeated ICP analysis and comparison of domestic quartz silicon ore shows that the total content of alkali metal is 350mg / kg, the total content of gas-liquid inclusions is 2310mg / kg, and the total content of B and P is 21mg / kg The quartz silica ore is soaked in hydrochloric acid with a concentration of 2% at 60°C for 2 hours, and then quickly rinsed with a large amount of deionized water to obtain a crude quartz silica ore;

[0053] S2. Water quenching: acid leaching the crude quartz silicon ore obtained in step S1, heating it to 630°C, and then quickly putting it into water for 5 seconds to explode when it is cooled, to remove a large amount of gas-liquid inclusions, and obtain crude product particles;

[0054] S3. Acid leaching: pulverize the crude product particles obtained in step S2 through a Raymond mill, pass through a 100...

Embodiment 3

[0060] Example 3 Preparation of ultra-pure high-grade fully transparent quartz material without color spots

[0061] S1. Selected quartz silicon ore: After repeated ICP analysis and comparison of domestic quartz silicon ore, the total content of alkali metal is 354mg / kg, the total content of gas-liquid inclusions is 2256mg / kg, and the total content of B and P is 21.6mg / kg. kg of quartz silicon ore, soak the quartz silicon ore at 70°C for 1 hour with phosphoric acid with a concentration of 3%, and then quickly wash it with a large amount of deionized water to obtain the crude quartz silicon ore;

[0062] S2. Water quenching: acid leaching the crude quartz silicon ore obtained in step S1, heating it to 650°C, and then quickly putting it into water for 8 seconds to explode when it is cooled, to remove a large amount of gas-liquid inclusions, and obtain crude product particles;

[0063] S3. Acid leaching: pulverize the crude product particles obtained in step S2 through a Raymond ...

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Abstract

The invention discloses an ultra-pure color-spot-free high-end fully-transparent quartz material and a preparation method and application thereof. Domestic quartz silicon ores are subjected to purification treatment through the processing steps of concentration of quartz silicon ores, water quenching, aqua regia impurity removing, esterification, floatation, magnetic separation, high-temperature vacuum treatment, ultrasonic purification and the like, and the ultra-pure quartz material for preparing color-spot-free high-end fully-transparent quartz glass ingots can be obtained. According to theultra-pure color-spot-free high-end fully-transparent quartz material and the preparation method and the application thereof, by combining the requirement for industrial production scales, the technological conditions for microwave processing and production of the ultra-pure color-spot high-end fully-transparent quartz material are further improved; particularly for the source of ultra-pure quartz raw materials in China, the production technological conditions for producing the ultra-pure quartz raw materials by the domestic quartz silicon ores are truly provided, the production technologicalconditions are mature and reasonable and have a stable technical effect, and technological supports are provided for scale production of the ultra-pure quartz glass ingots, and truly lowering of theproduction cost of the ultra-pure quartz glass ingots.

Description

technical field [0001] The invention relates to the technical field of preparation of ultra-pure quartz materials, and more specifically relates to an ultra-pure high-grade fully transparent quartz material without color spots and its preparation method and application. Background technique [0002] In recent years, with the dust PM2.5 and CO produced by the manufacturing and construction industries 2 , SO 2 Smog, greenhouse effect and acid rain are formed, seriously polluting the environment. The non-renewable one-time traditional fossil energy resources are decreasing, and the search for new energy and green energy technologies has become a major issue in the world. For example, solar energy is the first choice for the development of new energy sources, and high-grade quartz materials are indispensable in the photovoltaic industry. With the development of high technology, the demand for high-grade fully transparent quartz materials continues to increase, but natural cry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C1/02C03C3/06
CPCC03C1/022C03C3/06
Inventor 侯清麟侯熠徽田靓
Owner HUNAN UNIV OF TECH
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