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Quartz glass powder and preparation method thereof

A technology of quartz glass powder and silica powder, which is used in glass manufacturing equipment, glass furnace equipment, glass molding and other directions to achieve the effects of improving bulk density and fluidity, reducing waste acid production, and increasing bulk density and slidability.

Inactive Publication Date: 2018-12-04
RIHONG SEMICONUCTING MATERIAL NANTONG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the existing quartz glass powders usually have different melting points, and users can choose quartz glass powders with different melting points according to different needs, but there is no quartz glass powder with a melting point of 800°C

Method used

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  • Quartz glass powder and preparation method thereof
  • Quartz glass powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Select quartz ore with a silica grade ≥ 95% and an average diameter of 2-5 mm after crushing, first use a color sorter to remove impurities so that the silica grade in the quartz powder is increased by more than 99.5%; (2) Color sorting The finished product enters a ball mill for wet ball milling. The ore pulp is composed of quartz powder and an aqueous solution in parts by mass of 4.5:1. The aqueous solution contains 1.5% by mass of anionic surfactant and 3% by mass of sodium silicate. The pH of the aqueous solution is 11 , the ball milling concentration is at 45% by mass, the ball mill rotating speed is 125 rpm, and the ball milling time is 3 hours. The volume of balls in the ball mill accounts for 2 / 3, and the ball ratio is as follows: 40mm balls account for 10%, 30mm balls account for 50%, and 20mm balls account for 50%. The ball accounts for 40%, and the ball mill and the 160 mesh high-frequency fine sieve form a closed circuit, and the products with unqualified...

Embodiment 2

[0023] A kind of quartz glass powder, it is characterized in that: (1) selects the quartz ore of silicon dioxide grade ≥ 95% and the average diameter after crushing is 2-5mm, first adopts color sorter to remove impurities to make the silicon dioxide grade in the quartz powder The improvement is greater than 99.5%; (2) the color sorted finished product enters the ball mill for wet ball milling, and the ore pulp is composed of quartz powder and an aqueous solution at 5:1 by mass, and the aqueous solution contains 1% by mass of anionic surfactant, 4% by mass of silicon Na2SO4, the pH of the aqueous solution is 10, the ball mill concentration is 50% by mass, the ball mill speed is 100 rpm, and the ball mill time is 4 hours. The volume of balls in the ball mill accounts for 2 / 3, and the ball ratio is as follows: 40mm balls account for 10%, 30mm balls accounted for 50%, 20mm balls accounted for 40%, the ball mill and the 160-mesh high-frequency fine sieve form a closed loop, and the ...

Embodiment 3

[0026] A quartz glass powder, characterized in that: (1) select quartz ore with silica grade ≥95% and an average diameter of 2-5 mm after crushing, and first use a color sorter to remove impurities to make the silica grade in the quartz powder. The increase is greater than 99.5%; (2) the finished product of color separation enters a ball mill for wet ball milling, and the pulp is composed of quartz powder and an aqueous solution in a mass ratio of 4:1, and the aqueous solution contains 2 mass % of anionic surfactant and 2 mass % of silicon Sodium, the pH of the aqueous solution is 12, the ball milling concentration is 40% by mass, the ball mill rotation speed is 150 rpm, and the ball milling time is 2 hours. 10%, 30mm balls account for 50%, and 20mm balls account for 40%. The ball mill and 160-mesh high-frequency fine screen form a closed circuit, and products with unqualified fineness are returned to the ball mill for regrinding; The content is 50-60% by mass. (3) After ball...

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Abstract

The invention provides a quartz glass powder and a preparation method thereof. The quartz glass powder comprises silicon dioxide powder, aluminum oxide, red lead, boric acid, barium oxide, bismuth oxide, titanium dioxide, tellurium dioxide, zincate, manganese dioxide, sodium oleate, polyglycol stearate and yttrium oxide. A preparation method of the silicon dioxide powder comprises the steps: removing impurities in quartz ores by using a color sorter, and carrying out wet ball milling, ore pulp is composed of quartz powder and a water solution, and the water solution contains an anionic surfactant and sodium silicate; carrying out drying under the condition of 300-500 DEG C for 2-4 h after ball milling, removing iron under strong magnetism, then, entering an acid pickling process, drying the quartz powder with acid pickling impurity removed impurities under the condition of 100-150 DEG C, and carrying out uniform dry mixing on the quartz powder and micropowder silica gel according to aproportion of 10:(0.5-1).

Description

technical field [0001] The invention belongs to the field of preparation of quartz powder, and in particular relates to a quartz glass powder and a preparation method thereof. Background technique [0002] Quartz glass powder is a hard, wear-resistant, and chemically stable silicate mineral. Its main mineral component is SiO2. After processing, the quartz stone mined from the mine generally has a fineness below 120 mesh (less than 120 mesh). The product is called quartz sand, and the product with more than 120 meshes is called quartz powder, which is mainly used for GPP on the silicon wafer of the second tube. [0003] 201510372626.X provides a production method of quartz powder for TFT-LCD substrate glass. White-veined quartz ore is selected as raw material, and the impurity ore contained in it is removed for later use; after the ore is crushed by a crusher, it is removed by a color sorter The variegated impurity particles, and then send the ore particles into the pickling...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C12/00C03B5/16C03B19/10
CPCC03B5/16C03B19/10C03C12/00
Inventor 林家正
Owner RIHONG SEMICONUCTING MATERIAL NANTONG CO LTD
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