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Pouring molding aluminum-silicon series light refractory material

A light-weight refractory material, aluminum-silicon-based technology, applied in the field of refractory materials, can solve the problems of unsatisfactory thermal insulation effect, inability to meet thermal insulation requirements, easy damage and peeling, etc., and achieve the effects of good strength, small pores, and good corrosion resistance.

Inactive Publication Date: 2019-09-24
长兴县新宏信耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional dense castables have obvious advantages in erosion resistance, erosion resistance and high strength, but they obviously cannot meet the insulation requirements
Traditional refractory lightweight castables often use lightweight aggregates, such as floating beads, perlite, porous ceramsite, hollow balls, etc. , low strength, poor corrosion resistance, easy to damage and peel off, can not be directly used as a working lining, and its pore size is large, and the thermal insulation effect is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1. Weigh 550g of 60-mesh quartz material, 100g of 200-mesh corundum fine powder, 150g of α-alumina micro-powder (d50=1.5-5um), 100g of CA-71 pure calcium aluminate cement, and 100g of high-alumina fiber with a length of 0.5-3mm;

[0019] 2. Weigh 450g of silica sol, 70g of water, 2g of PAC, and 4g of ammonium polyacrylate, stir evenly, and make a solvent for later use.

[0020] 3. Add the materials in step "1" to the solvent described in step "2", and add them while stirring (calcium aluminate cement is added last), after stirring evenly, pour into the mold for casting.

[0021] 4. Release the mold after placing it for 1-2 hours, curing, drying, and heat treatment at 700°C×2 hours to obtain light-weight refractory products.

Embodiment 2

[0023] 1. Weigh 450g of 60-mesh quartz material, 100g of 200-mesh corundum fine powder, 200g of α-alumina micro-powder (d50=1.5-5um), 200g of CA-71 pure calcium aluminate cement, and 50g of aluminum silicate fiber with a length of 0.5-3mm;

[0024] 2. Weigh 400g of silica sol, 100g of water, 1g of HPMC, and 6g of sodium hexametaphosphate, stir well, and make a solvent for later use.

[0025] 3. Add the materials in step "1" to the solvent described in step "2", and add them while stirring (calcium aluminate cement is added last), after stirring evenly, pour into the mold for casting.

[0026] 4. Release the mold after placing it for 1-2 hours, curing, drying, and heat treatment at 700°C×2 hours to obtain light-weight refractory products.

Embodiment 3

[0028] 1. Weigh 500g of 60-mesh quartz material, 100g of 200-mesh corundum fine powder, 180g of α-alumina micro-powder (d50=1.5-5um), 140g of CA-71 pure calcium aluminate cement, and 80g of polycrystalline alumina fiber with a length of 0.5-3mm ;

[0029] 2. Weigh 350g of silica sol, 100g of water, 1.5g of CMC, and 8g of sodium tripolyphosphate, stir well, and make a solvent for later use.

[0030] 3. Add the materials in step "1" to the solvent described in step "2", and add them while stirring (calcium aluminate cement is added last), after stirring evenly, pour into the mold for casting.

[0031] 4. Release the mold after placing it for 1-2 hours, curing, drying, and heat treatment at 700°C×2 hours to obtain light-weight refractory products.

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Abstract

The invention belongs to the technical field of refractory materials, and provides a pouring molding aluminum-silicon series light refractory material. The aluminum-silicon series light refractory material comprises raw materials and solvents. The raw materials comprise ceramic powder as a basic filler, and the solvents comprise water, a thickener and a dispersant; the raw materials of the aluminum-silicon series light refractory material also comprise pure calcium aluminate cement and ceramic fiber to improve the strength and thermal shock resistance of the product. The solvents also comprise silica sol. The pure calcium aluminate cement is combined with the silica sol to complete the hardening process of the refractory material together. During the hardening process of the refractory material, the pure calcium aluminate cement hydrates and hardens in the solvents and interacts with the silica sol to form a framework of the lightweight refractory material, and thus the ceramic powder and water molecules are adsorbed on the framework of the lightweight refractory material. The pouring molding aluminum-silicon series light refractory material has the characteristics of small pore diameter, good heat insulation property, uniform distribution, high strength, good erosion resistance and good erosion resistance.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and relates to a cast-molded aluminum-silicon-based lightweight refractory material. Background technique [0002] In the aluminum deep processing industry, the working layer and the insulation layer of traditional refractory materials are often made of different materials. The erosion-resistant, erosion-resistant, and high-strength dense refractory materials are used as the working lining; easily damaged, easy to peel off, and low-strength lightweight materials are used as the insulation layer. So as to work together to meet the comprehensive requirements of refractory materials for temperature resistance, erosion resistance, high strength and heat preservation. [0003] Traditional dense castables have obvious advantages in erosion resistance, erosion resistance, and high strength, but they obviously cannot meet the insulation requirements. Traditional refractory lightweight casta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/3217C04B2235/3222C04B2235/3418C04B2235/447C04B2235/5224C04B2235/5228
Inventor 不公告发明人
Owner 长兴县新宏信耐火材料有限公司
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