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A silica brick, lightweight technology, applied in the field of refractory materials, can solve the problems of short service life, poor thermal shock resistance, erosion, etc., and achieve the effects of low production raw material cost, strong thermal shock stability, and simple production process
Inactive Publication Date: 2016-12-07
青岛燕园海洋生物科技有限公司
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Problems solved by technology
Silica brick is a siliceous product containing more than 93% of silicon oxide. The raw materials used are silica, waste silica brick, etc. It has strong resistance to acid slag erosion, high softening temperature under load, and does not shrink in volume after repeated calcination, and even slightly expands; However, it is easily corroded by alkaline slag and has poor thermal shock resistance
With the development of science and technology and industry, the requirements for lightweight refractory materials are getting higher and higher. The current lightweight silicon carbide bricks have poor corrosion resistance, short service life, heavy weight, and poor thermal shock resistance. Industrial production
Method used
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Embodiment 1
[0015] A lightweight silica brick comprising the following components in parts by weight:
[0016] 100 parts of silica particles, 120 parts of fine silica powder, 50 parts of silicon dioxide material, 20 parts of silicon carbide, 10 parts of limestone, 5 parts of silica gel liquid, 15 parts of graphite powder, 1 part of foaming agent, and 1 part of sodium tripolyphosphate.
[0017] Silica material is a mixture of silica stone material and waste silica brick pulverized material.
Embodiment 2
[0019] A lightweight silica brick comprising the following components in parts by weight:
[0020] 150 parts of silica particles, 200 parts of silica fine powder, 80 parts of silicon dioxide material, 25 parts of silicon carbide, 20 parts of lime, 7.5 parts of silica gel liquid, 20 parts of graphite powder, 4.5 parts of foaming agent, 1.5 parts of sodium tripolyphosphate.
[0021] Silica material is a mixture of silica stone material and waste silica brick pulverized material.
Embodiment 3
[0023] A lightweight silica brick comprising the following components in parts by weight:
[0024] 200 parts of silica particles, 240 parts of silica fine powder, 100 parts of silicon dioxide material, 30 parts of silicon carbide, 30 parts of limestone, 10 parts of silica gel solution, 25 parts of graphite powder, 5 parts of foaming agent, and 3 parts of sodium tripolyphosphate.
[0025] Silica material is a mixture of silica stone material and waste silica brick pulverized material.
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Abstract
The invention relates to the technical field of refractory materials, in particular to a lightweight silicon brick. The lightweight silicon brick is prepared from, by weight, 100-200 parts of silica particles, 120-240 parts of silica fine powder, 50-100 parts of silicon dioxide materials, 20-30 parts of silicon carbide, 10-30 parts of limestone, 5-10 parts of silica gel, 15-25 parts of graphite powder, 1-5 parts of a foaming agent and 1-3 parts of sodium tripolyphosphate. The lightweight silicon brick has advantages of light weight, corrosion resistance, high thermal shock resistance, crack resistance, long service life, low cost of production materials, technical simplicity in production, suitableness for industrial production and worthiness of popularization and application.
Description
technical field [0001] The invention relates to the technical field of refractory materials, in particular to a lightweight silica brick. Background technique [0002] Acidic refractory materials are mainly composed of silica, and commonly used are silica bricks and clay bricks. Silica brick is a siliceous product containing more than 93% of silicon oxide. The raw materials used are silica, waste silica brick, etc. It has strong resistance to acid slag erosion, high softening temperature under load, and does not shrink in volume after repeated calcination, and even slightly expands; However, it is easily corroded by alkaline slag and has poor thermal shock resistance. With the development of science and technology and industry, the requirements for lightweight refractory materials are getting higher and higher. The current lightweight silicon carbide bricks have poor corrosion resistance, short service life, heavy weight, and poor thermal shock resistance. Industrial produ...
Claims
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Application Information
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