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Wearable refractory castable

A technology of refractory castables and coarse aggregates, which is applied in the field of refractory materials and can solve the problems of increasing costs and wasting resources

Inactive Publication Date: 2014-02-05
NINGXIA TIANZONG HONGGUANG COGENERATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for refractory materials used at medium and low temperatures, this not only wastes resources, but also increases costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) Preparation of castable:

[0014] 3.0~2.0mm coarse aggregate 20, 1.5mm~1mm medium aggregate 35, 0.5~0.01mm fine aggregate 15, binder 5, silicon micropowder 5, alumina micropowder 15, water 5. According to the above ratio, weigh and mix the raw materials to obtain a slurry with good fluidity, and test the physical properties after forming, curing and heat treatment.

[0015] (2) Physical performance test:

[0016] After drying at 110℃×24h, the flexural strength is 22.4MPa, and the compressive strength is 164.7MPa;

[0017] After 1100℃×3H treatment, the flexural strength is 18.4MPa, the compressive strength is 149.5MPa, and the line change is ~0.06%;

[0018] After 1350℃×3H treatment, the flexural strength is 19.4MPa, the compressive strength is 161.3MPa, the line change is ~0.23%; the abrasion resistance is 4.17cm 3 .

Embodiment 2

[0020] (1) Preparation of castable:

[0021] Use 22% of coarse aggregate, 38% of medium aggregate, 20% of fine aggregate, 7% of binder, 2% of silica powder, 8% of alumina powder, and 3% of water. According to the above ratio, weigh and mix the raw materials to obtain a slurry with good fluidity, and test the physical properties after forming, curing and heat treatment.

[0022] (2) Physical performance testing:

[0023] After drying at 110℃×24h, the flexural strength is 20.8MPa, and the compressive strength is 150.4MPa;

[0024] After 1100℃×3H treatment, the flexural strength is 15.8MPa, the compressive strength is 127.4MPa, and the line change is ~0.15%;

[0025] After 1350℃×3H treatment, the flexural strength is 15.7MPa, the compressive strength is 145.7MPa, the line change is ~0.24%; the abrasion resistance is 3.53cm 3 .

Embodiment 3

[0027] (1) Preparation of castable:

[0028] Use 25% of coarse aggregate, 25% of medium aggregate, 20% of fine aggregate, 10% of binder, 3% of silica powder, 15% of alumina powder, and 2% of water. According to the above ratio, weigh and mix the raw materials to obtain a slurry with good fluidity, and test the physical properties after forming, curing and heat treatment.

[0029] (2) Physical performance testing:

[0030] After drying at 110℃×24h, the flexural strength is 19.8MPa and the compressive strength is 152.8MPa;

[0031] After 1100℃×3H treatment, the flexural strength is 15.2MPa, the compressive strength is 131.4MPa, and the line change is ~0.17%;

[0032] After 1350℃×3H treatment, the flexural strength is 18.7MPa, the compressive strength is 155.3MPa, the line change is ~0.20%; the abrasion resistance is 4.51cm 3 .

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Abstract

The invention relates to wearable refractory castable which comprises the following raw materials in parts by weight: 20-25 parts of coarse aggregate, 35-40 parts of medium aggregate, 15-20 parts of fine aggregate, 5-10 parts of binder, 5-10 parts of silica micropowder, 10-15 parts of alumina micropowder, and 1-5 parts of water, wherein the coarse aggregate is special-grade alumina; the medium aggregate comprises silicon carbide and zirconite; the fine aggregate is special-grade alumina; the binder comprises the following components in parts by weight: 25-35 parts of magnesium silicate, and 75-65 parts of phosphate. According to the wearable refractory castable disclosed by the invention, corundum is replaced by the alumina, the silicon carbide and the zirconite, and therefore, the cost of raw materials is reduced; furthermore, the mechanical strength and the abrasive resistance of materials are not influenced.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a wear-resistant refractory castable with good wear resistance. Background technique [0002] Compared with qualitative refractory products, unshaped refractory materials represented by refractory castables have the advantages of short process flow, low production energy consumption and cost, convenient use, wide application range, integrity and good use effect, so they are widely used in the world. It has developed rapidly, and its proportion in the whole refractory material is getting higher and higher. In some countries with advanced refractory technology, the output of unshaped refractories has approached or even exceeded the output of shaped products. For example, the current output of unshaped refractory materials in Japan accounts for about 60% of the total refractory materials; in the United States, it is about 50%; in Britain, Germany, France an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 穆祥王西来董伟胜刘文艳解仁刘朝晖苏新国王淑娟
Owner NINGXIA TIANZONG HONGGUANG COGENERATION TECH
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