Waterless taphole mix for blast furnace taphole

A technology of anhydrous taphole mud and taphole, which is applied in the field of refractory materials, can solve the problems of not being able to satisfy blast furnace tapping for a long time, irritation of skin and mucous membranes, and low high-temperature strength of taphole mud, and achieve good slag erosion resistance, Good workability and good adhesion

Active Publication Date: 2006-10-04
PUYANG REFRACTORIES GRP CO LTD
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  • Summary
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AI Technical Summary

Problems solved by technology

Commonly used gun mud has low high-temperature strength, poor slag erosion resistance, and is not resistant to slag and molten iron erosion. It expands holes quickly during use and cannot meet the requirements of blast furnace for long-term iron tapping; its binder is usually coal tar or ant

Method used

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Embodiment Construction

[0049] The present invention will be described in further detail below in conjunction with specific examples, but not as a limitation of the present invention.

[0050] Take the raw material by the following parts by weight:

[0051] Brown corundum 3-1mm 30 parts

[0052] Brown corundum powder 0.074-0mm 17 parts

[0053] Kyanite 1-0mm 5 copies

[0054] SiC 0.074-0mm 15 parts

[0055] Guangxi white mud 0.088-0mm 10 parts

[0056] Sericite powder 0.074-0mm 8 parts

[0057] Coke 2-0mm 20 parts

[0058] Metal silicon powder 0.044-0mm 1 part

[0059] Carbon black 0.5 parts

[0060] Modified polymer 13 parts

[0061] 5 parts powdered resin

[0062] First, put the above-mentioned raw materials except the binder into the mixer and stir evenly, then put the evenly stirred material into the wheel mill, then add the binder made of modified polymer and powdery resin, and knead for 20 minutes to produce The material is squeezed into a mud section with a mud extruder, and the mud ...

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Abstract

The invention discloses a waterless tamping for blast furnace tapping comprising 80-120 weight portions of component A and 15-25 weight portions of component B, wherein the component A comprises (by weight portions) brown fused alumina with grain size of 1-3mm 20-40 parts, brown fused alumina powder with grain size <=0.074mm 15-25 parts, kyanite with grain size <=1mm 2-7 parts, SiC with grain size <=0.074mm 8-15 parts, Guangxi clay wash with grain size <=0.088mm 5-20 parts, mica powder with grain size <=0.074mm 5-10 parts, coke with grain size <=2mm 10-20 parts, metallic silicon powder with grain size of 0.044mm 0.5-3 parts, carbon black 0.1-2 parts, the component B being conjugation agent. The waterless tamping has good high-temperature strength and slag erosiveness resistance.

Description

technical field [0001] The invention relates to a blast furnace clay, in particular to an environment-friendly anhydrous blast furnace clay suitable for plugging a blast furnace taphole, and belongs to the field of refractory materials. Background technique [0002] With the rapid development of my country's iron and steel industry, a large number of large and medium-sized iron-making blast furnaces have been put into production across the country. The blast furnaces are developing in the direction of large-scale, long-life, and intensified smelting. The performance requirements for blasting clay are getting higher and higher. More and more attention has been paid to this aspect, which also requires the clay to be environmentally friendly. Commonly used gun mud has low high-temperature strength, poor slag erosion resistance, and is not resistant to slag and molten iron erosion. It expands holes quickly during use and cannot meet the requirements of blast furnace for long-term...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/10C04B35/16C21B7/14
Inventor 刘百宽王成贺中央朱遂宾孙荣海孙国威
Owner PUYANG REFRACTORIES GRP CO LTD
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