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Recycling method of blast furnace tapping channel refractory material castable and corundum furnace slag

A technology of refractory material and tapping trough, applied in the field of refractory material, can solve the problems of high raw material price and high cost, achieve stable performance, reduce cost, and meet the effects of industrial production requirements

Active Publication Date: 2013-12-25
攀枝花钢城集团瑞矿工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of high cost of raw materials used in blast furnace tapping trough castables due to high price, and propose a low-cost blast furnace tapping trough refractory castable, while improving the comprehensive utilization value of corundum slag

Method used

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  • Recycling method of blast furnace tapping channel refractory material castable and corundum furnace slag
  • Recycling method of blast furnace tapping channel refractory material castable and corundum furnace slag
  • Recycling method of blast furnace tapping channel refractory material castable and corundum furnace slag

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1 Preparation of castable for blast furnace tapping trough of the present invention

[0029] raw material:

[0030] Corundum slag: the above 1# corundum slag.

[0031] Silicon carbide powder particle size and quality requirements: SiC content greater than 95%, particle size -325 mesh.

[0032] Ingredients:

[0033] 5-10mm corundum slag 40kg, 2-5mm corundum slag 30k, 0-2mm corundum slag 15k, silicon carbide powder 10kg, calcium aluminate cement 5kg, sodium hexametaphosphate 0.2kg.

[0034] Stir and pack in a blender after batching according to the above ratio. When in use, add water and stir for more than 5 minutes (the amount of water added accounts for 6% of the total mixing material quality.

[0035] forming:

[0036] The stirred and mixed material is poured into the mold of the iron slag hook, and the vibrating rod is used to vibrate the castable to achieve the purpose of flow forming.

[0037] Drying and heat treatment:

[0038] The castable is dem...

Embodiment 2

[0041] Embodiment 2 Preparation of castable for blast furnace tapping trough of the present invention

[0042] raw material:

[0043] Corundum slag The above 2# corundum slag.

[0044] Silicon carbide powder particle size and quality requirements: SiC content greater than 95%, particle size -325 mesh.

[0045] Ingredients:

[0046] 5-10mm corundum slag 25kg, 2-5mm corundum slag 35kg, 0-2mm corundum slag 25kg, silicon carbide powder 15kg, calcium aluminate cement 5kg, sodium hexametaphosphate 0.2kg.

[0047] Stir and pack in a blender after batching according to the above ratio. When in use, add water and stir for more than 5 minutes (the amount of water added accounts for 6% of the total mixing material quality.

[0048] forming:

[0049] The stirred and mixed material is poured into the mold of the iron slag hook, and the vibrating rod is used to vibrate the castable to achieve the purpose of flow forming.

[0050] Drying and heat treatment:

[0051] The castable is de...

Embodiment 3

[0054] Embodiment 3 Preparation of castable for blast furnace tapping trough of the present invention

[0055] raw material:

[0056] Corundum slag: A1 2 o 3 The content is more than 75%, MgO is about 15%, the calcium oxide content is less than 5%, and the iron oxide content is less than 2%;

[0057]Silicon carbide powder particle size and quality requirements: SiC content greater than 95%, particle size -325 mesh.

[0058] Ingredients:

[0059] 50kg of 5-10mm corundum slag, 15kg of 2-5mm corundum slag, 15kg of 0-2mm corundum slag, 15kg of silicon carbide powder, 5kg of calcium aluminate cement, and 0.2kg of sodium hexametaphosphate.

[0060] Stir and pack in a blender after batching according to the above ratio. When in use, add water and stir for more than 5 minutes (the amount of water added accounts for 6% of the total mixing material quality.

[0061] forming:

[0062] The stirred and mixed material is poured into the mold of the iron slag hook, and the vibrating r...

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Abstract

The invention belongs to the technical field of refractory materials, particularly belongs to a recycling method of blast furnace tapping channel refractory material castable and corundum furnace slag. Targeting at the problems that the prices of raw materials for blast furnace tapping channel castable are high so that the cost is quite high, the invention provides a scheme for utilizing corundum furnace slag as the blast furnace tapping channel refractory material castable: 40 portions to 85 portions of corundum furnace slag, 1 portion to 5 portions of alumina cement or calcium aluminate cement, and 0.1 portion to 0.3 portion of additive are mixed and packaged; and when in use, water is added into the mixture, the mixture is stirred, poured into the mould of a tapping channel, naturally hardened, dried and stripped, and can be used as the blast furnace tapping channel refractory material castable. The recycling method of the blast furnace tapping channel refractory material castable and the corundum furnace slag improves the comprehensive utilization value of the corundum furnace slag; and further, no asphalt and other organic additive needs to be added in the castable, so that the construction environment can be improved.

Description

technical field [0001] The invention relates to a high-temperature-resistant material for a tap trough pouring material used in an iron-making blast furnace tap trough under high-temperature conditions, and belongs to the technical field of refractory materials. Background technique [0002] my country is a big steel producing country in the world and consumes a lot of refractory materials. The general requirements for refractory materials for domestic large and medium-sized blast furnace tapping channels are: high temperature resistance, corrosion resistance, erosion resistance, penetration resistance, and high thermal conductivity. The refractory materials used for tapping troughs of large and medium-sized blast furnaces are mainly A1 2 o 3 - SiC castables, whose raw materials are mainly corundum and silicon carbide, are relatively expensive, for example, the price of general corundum is around 3000-6000 yuan per ton. [0003] Chinese patent applications 200910092570.7 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 青光红陈涛吴胜利袁兵郑德明
Owner 攀枝花钢城集团瑞矿工业有限公司