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Casting-molded aluminum-silicon lightweight refractory material

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

Inactive Publication Date: 2015-07-22
SINOSTEEL LUOYANG INST OF REFRACTORIES RES
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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, and 150g of α-alumina fine powder (d 50 =1.5~5um), CA-71 pure calcium aluminate cement 100g, length 0.5~3mm high alumina fiber 100g;

[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 while stirring (calcium aluminate cement is added at the end), after stirring evenly, pour into the mold for casting.

[0021] 4. Release the mold after placing it for 1~2h, curing, drying, and heat treatment at 700℃×2h to get light refractory products.

Embodiment 2

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

[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 while stirring (calcium aluminate cement is added at the end), after stirring evenly, pour into the mold for casting.

[0026] 4. Release the mold after placing it for 1~2h, curing, drying, and heat treatment at 700℃×2h to get light refractory products.

Embodiment 3

[0028] 1. Weigh 500g of 60-mesh quartz material, 100g of 200-mesh corundum fine powder, and 180g of α-alumina fine powder (d 50 =1.5~5um), CA-71 pure calcium aluminate cement 140g, length 0.5~3mm polycrystalline alumina fiber 80g;

[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 while stirring (calcium aluminate cement is added at the end), after stirring evenly, pour into the mold for casting.

[0031] 4. Release the mold after placing it for 1~2h, curing, drying, and heat treatment at 700℃×2h to get light refractory products.

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Abstract

The invention belongs to the technical field of refractory materials, and discloses a casting-molded aluminum-silicon lightweight refractory material which comprises raw materials and solvents, wherein the raw materials comprise ceramic powder as base packing; the solvent comprises water, a thickening agent and a dispersing agent; the raw material of the aluminum-silicon lightweight refractory materials further comprise pure calcium aluminate cement and ceramic fiber for improving the strength and the thermal shock resistance of a product; the solvent further comprise silica sol; the pure calcium aluminate cement and the silica sol act together to complete the hardening process of the refractory material; when the refractory material is hardened, the pure calcium aluminate cement is hydrated and hardened in a solvent and acts with the silica sol to form the framework of the lightweight refractory material, and the ceramic powder and water molecules can be adhered to the framework of the lightweight refractory material. The casting-molded aluminum-silicon lightweight refractory material has the characteristics of fine aperture, uniformity in distribution, good thermal insulation property, high strength, good erosion resistance and good washout resistance.

Description

Technical field [0001] The present invention is the field of refractory material technology, involving a light pouring aluminum silicon system lightweight refractory material. Background technique [0002] In the aluminum deep processing industry, the working layer of traditional refractory materials is often different from the insulation layer. The anti -brushing, erosion resistance, and high -intensity density refractory materials serve as working lining;So as to meet the comprehensive requirements of temperature -resistant, anti -brushing, high intensity, and heat preservation of refractory materials. [0003] Traditional densely pouring injection has obvious advantages in anti -erosion, brushing, and high intensity, but it obviously cannot meet the insulation requirements.Traditional refractory light -resistant lighting materials often use lightweight aggregate, such as drifting beads, perlite, porous pottery, hollow balls, etc. (China Patent CN101723687A, CN103113116A, CN121...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B38/00
Inventor 王冬冬王自强周慧君王刚
Owner SINOSTEEL LUOYANG INST OF REFRACTORIES RES
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