Production method of high-strength and high-compactness fused quartz

A technology of fused silica and production method, which is applied in the field of production of high-strength and high-density fused silica, can solve problems such as strength and density of fused silica, and achieve simple and efficient production methods, good flexural strength, and good chemical stability Effect

Pending Publication Date: 2021-02-02
徐州赛诺石英有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The Chinese patent application number is CN201911135362.0, which discloses a fused silica refractory material for precision casting mold shells and its production method. It is made of the following raw materials in parts by mass: fused silica powder 70-80 parts, calcium oxide 8-10 parts 6-8 parts of magnesium oxide, 2-3 parts of manganese oxide, 3-4 parts of titanium oxide, 1-2 parts of niobium pentoxide, 1-1.5 parts of tantalum pentoxide, 4-6 parts of binder, no Addressing Strength and Density of Fused Silica

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Production of fused quartz raw material: the vein quartz raw ore is first graded and washed to remove clay, then crushed to a particle size range of 4 to 25 mm, and the crushed quartz granules are subjected to acid treatment to obtain quartz raw material; the quartz raw material is melted, Obtain fused silica bulk material; manually crush and sort the fused silica bulk material to remove obvious impurities, and then crush it to the required particle size range of 1-10 mm through a centrifugal crusher; the crushed fused silica powder is passed through a magnetic Selecting and processing to obtain fused silica raw material;

[0036] (2) Preparation of slurry: Weigh the above-mentioned fused silica raw material and cordierite powder, the mass ratio of the fused silica raw material and cordierite is 4:1, use a ball mill to mill the fused silica raw material and cordierite at a speed of 250 -300r / min, the ball milling method adopts forward and reverse ball milling, and t...

Embodiment 2

[0046] (1) Production of fused quartz raw material: the vein quartz raw ore is first graded and washed to remove clay, then crushed to a particle size range of 4 to 25 mm, and the crushed quartz granules are subjected to acid treatment to obtain quartz raw material; the quartz raw material is melted, Obtain fused silica bulk material; manually crush and sort the fused silica bulk material to remove obvious impurities, and then crush it to the required particle size range of 1-10 mm through a centrifugal crusher; the crushed fused silica powder is passed through a magnetic Selecting and processing to obtain fused silica raw material;

[0047] (2) Preparation of slurry: Weigh the above fused silica raw material and cordierite powder, the mass ratio of the fused silica raw material to cordierite is 3.2:1, use a ball mill to mill the fused silica raw material and cordierite at a speed of 250 -300r / min, the ball milling method adopts forward and reverse ball milling, and the ball m...

Embodiment 3

[0057] (1) Production of fused quartz raw material: the vein quartz raw ore is first graded and washed to remove clay, then crushed to a particle size range of 4 to 25 mm, and the crushed quartz granules are subjected to acid treatment to obtain quartz raw material; the quartz raw material is melted, Obtain fused silica bulk material; manually crush and sort the fused silica bulk material to remove obvious impurities, and then crush it to the required particle size range of 1-10 mm through a centrifugal crusher; the crushed fused silica powder is passed through a magnetic Selecting and processing to obtain fused silica raw material;

[0058] (2) Preparation of slurry: Weigh the above fused silica raw material and cordierite powder, the mass ratio of the fused silica raw material to cordierite is 3.6:1, use a ball mill to mill the fused silica raw material and cordierite at a speed of 250 -300r / min, the ball milling method adopts forward and reverse ball milling, and the ball m...

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PUM

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Abstract

The invention discloses a production method of high-strength and high-compactness fused quartz. The production method comprises the following steps: (1) producing a fused quartz raw material; (2) preparing slurry, namely performing ball milling on the fused quartz raw material and cordierite by adopting a ball mill at the rotating speed of 250-300r / min in a forward and reverse ball milling mannerfor 6-10h, sieving the powder by using a 500-mesh sieve, adding the powder subjected to ball milling into a precursor solution, adding a dispersing agent, adjusting the pH value to 3-4 through lacticacid and ammonia water, and preparing slurry with the solid phase content of 60-65% through mechanical stirring; (3) conducting gel curing; (4) conducting drying; and (5) conducting microwave sintering. According to the production method of the high-strength and high-compactness fused quartz, the production method is simple and efficient, the influence of impurity elements on the chemical stability, strength and compactness of the high-strength and high-compactness fused quartz is avoided, and the prepared fused quartz has good breaking strength, high compactness, good chemical stability and wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of fused silica production, and in particular relates to a production method of high-strength and high-density fused silica. Background technique [0002] Quartz is a non-metallic mineral with silicon dioxide as the main component. It is widely distributed in nature. As an important industrial raw material, quartz is mainly used in traditional industries such as glass, ceramics, refractory materials, mechanical casting, metallurgy and chemical industry. field. With the advancement of science and technology and the development of the national economy, quartz raw materials are also widely used in high-tech industries, such as aerospace, aviation, navigation, military, electrical engineering, electronics, telecommunications, and automobiles. [0003] With the development of the economy and the continuous improvement and progress of technology, higher requirements are put forward for the physical and chemical p...

Claims

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Application Information

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IPC IPC(8): C04B35/14C04B35/624C04B35/64C04B35/626
CPCC04B35/14C04B35/624C04B35/64C04B35/6262C04B35/62605C04B2235/3481C04B2235/667C04B2235/6562
Inventor 季明光
Owner 徐州赛诺石英有限公司
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