Preparation method of refractory castable

A technology for refractory castables and raw materials, applied in the field of castables, can solve problems such as poor resistance to penetration of molten aluminum and inability to meet market demands.

Inactive Publication Date: 2018-12-18
ANHUI RUITAI NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing castables have poor resistance to liquid aluminum penetration and cannot meet market demand

Method used

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  • Preparation method of refractory castable
  • Preparation method of refractory castable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for preparing a refractory castable, the raw material composition and weight ratio of the refractory castable are: 55 parts of brown corundum, 19 parts of kyanite powder, 2 parts of feldspar powder, 11.5 parts of calcium aluminate cement, and 3 parts of calcium sulfate , 9.5 parts of calcium fluoride, 1.5 parts of anti-seepage aid, 9 parts of explosion-proof fiber, 1.5 parts of dispersant, 14 parts of sodium silicate, 2.5 parts of potassium silicate, 0.5 part of rare earth; during preparation, according to the weight ratio, first Co-grind brown corundum, calcium sulfate, calcium fluoride and anti-seepage additives in a vibration mill for 45 minutes to obtain homogenized powder, then mix the homogenized powder with other components and knead evenly to obtain a refractory castable.

Embodiment 2

[0018] A method for preparing a refractory castable, the raw material composition and weight ratio of the refractory castable are: 78 parts of brown corundum, 12 parts of kyanite powder, 7 parts of feldspar powder, 5 parts of calcium aluminate cement, and 8.5 parts of calcium sulfate , 2 parts of calcium fluoride, 4.5 parts of anti-seepage aid, 4.5 parts of explosion-proof fiber, 4 parts of dispersant, 6 parts of sodium silicate, 7.5 parts of potassium silicate, 0.1 part of rare earth; during preparation, according to the weight ratio, first Co-grind brown corundum, calcium sulfate, calcium fluoride and anti-seepage additives in a vibration mill for 55 minutes; obtain homogenized powder, then mix the homogenized powder with other components, and knead evenly to obtain a refractory castable;

[0019] Wherein, the preparation method of the anti-seepage auxiliary agent is as follows: taking iron powder and chromium nitride powder and mixing uniformly, sintering treatment, and heat...

Embodiment 3

[0021] A method for preparing a refractory castable, the raw material composition and weight ratio of the refractory castable are: 65 parts of brown corundum, 15 parts of kyanite powder, 4 parts of feldspar powder, 9 parts of calcium aluminate cement, and 5 parts of calcium sulfate , 6 parts of calcium fluoride, 3 parts of anti-seepage auxiliary agent, 7 parts of explosion-proof fiber, 3 parts of dispersant, 9 parts of sodium silicate, 5 parts of potassium silicate, 0.3 part of rare earth; during preparation, according to the weight ratio, first Co-grind brown corundum, calcium sulfate, calcium fluoride and anti-seepage additives in a vibrating mill for 50 minutes; obtain homogenized powder, then mix the homogenized powder with other components, and knead evenly to obtain a refractory castable;

[0022] Wherein, the preparation method of the anti-seepage additive is: take iron powder and chromium nitride powder and mix uniformly according to the mass ratio of 1:1.5, sinter at 1...

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Abstract

The invention relates to the technical field of castables, and concretely discloses a preparation method of a refractory castable. The refractory castables comprises, by weight, 55-78 parts of brown fused alumina, 12-19 parts of kyanite powder, 2-7 parts of celsian powder, 5-11.5 parts of calcium aluminate cement, 3-8.5 parts of calcium sulfate, 2-9.5 parts of calcium fluoride, 1.5-4.5 parts of ananti-seepage aid, 4.5-9 parts of explosion-proof fibers, 1.5-4 parts of a dispersant, 6-14 parts of sodium silicate, 2.5-7.5 parts of potassium silicate and 0.1-0.5 part of rare earth. The preparation method comprises the following steps: co-grinding the brown fused alumina, calcium sulfate, calcium fluoride and the anti-seepage aid in a vibration mill for 40-60 min to obtain homogenized powder,mixing the homogenized powder with other components, and performing uniform mixing in order to obtain the refractory castable. The refractory castable obtained in the invention has an excellent anti-seepage property.

Description

technical field [0001] The invention relates to the technical field of castables, in particular to a preparation method of refractory castables. Background technique [0002] Self-flowing castables refer to low-cement, ultra-low-cement or cement refractory castables characterized by their fluidity after mixing. Refractory castables with this fluidity can flow and degas without external force, and there is no obvious segregation . Self-flowing castables have attracted attention in recent years due to their good flow characteristics. [0003] The castables used for the bottom, side wall and aluminum flow groove of the large-scale aluminum smelting furnace must not only resist the physical damage and thermal shock caused by the periodic erosion of the aluminum liquid, but more importantly, resist the wetting of the aluminum liquid , does not react with the alloy components in the aluminum liquid, thereby affecting the composition of aluminum alloy products. The existing cast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/101
CPCC04B35/101C04B2235/3222C04B2235/3224C04B2235/3427C04B2235/3481C04B2235/445C04B2235/9607C04B2235/9684
Inventor 董舜杰姜辉周键万志华蒋杰
Owner ANHUI RUITAI NEW MATERIALS TECH
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