Stemming and method for preparing same

A technology of gun mud and coal tar, which is applied in the field of gun mud and its preparation, can solve the problems that the slag and iron cannot be discharged on time, affect the normal production and stable operation of the blast furnace, and achieve the improvement of high temperature strength and oxidation resistance, and the leaching of slag and iron Corrosion and erosion resistance enhancement, good structural strength effect

Inactive Publication Date: 2012-08-01
北京首钢耐材炉料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the blast furnace clay produced by the existing technology cannot fully meet the requirements of large-scale blast furnaces, and often causes the hole to be blocked in advance due to the serious reaming of t

Method used

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  • Stemming and method for preparing same

Examples

Experimental program
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Effect test

Embodiment 1

[0074] A kind of gun clay provided by the embodiment of the present invention is prepared according to the following requirements: 12kg of coke powder raw material with a particle size of 1-0mm, 4kg of asphalt raw material with a particle size of 1-0mm, 18kg of silicon carbide raw material with a particle size of 1.5-0mm, and a particle size of 35kg of 3-0mm corundum raw material, 8kg of ferrosilicon nitride raw material with a particle size of less than 0.074mm, 3kg of sericite raw material with a particle size of less than 0.088, 10kg of spherical clay raw material with a particle size of less than 0.088, 5kg of 80-mesh kyanite raw material, and 1kg of metallic aluminum raw material with a particle size of less than 0.074mm , the particle size is less than 0.074mm metal silicon raw material 1kg, 5μα alumina raw material 3kg.

[0075] Mix the above-mentioned various raw materials according to the ratio of the present invention, mix the prepared various raw materials evenly, ad...

Embodiment 2

[0080] Another kind of gun clay provided by the embodiment of the present invention is formulated according to the following requirements: 9kg of coke powder raw material with a particle size of 1-0mm, 3kg of asphalt raw material with a particle size of 1-0mm, 16kg of silicon carbide raw material with a particle size of 1.5-0mm, 32kg of 3-0mm corundum raw materials, 14kg of ferrosilicon nitride raw materials with a particle size of less than 0.074mm, 2kg of sericite raw materials with a particle size of less than 0.088, 12kg of spherical clay raw materials with a particle size of less than 0.088, 5kg of 80-mesh kyanite raw materials, and metallic aluminum raw materials with a particle size of less than 0.074mm 2kg, the particle size is less than 0.074mm metal silicon raw material 2kg, 5μα alumina raw material 3kg.

[0081] Mix the above-mentioned various raw materials according to the ratio of the present invention, mix the prepared various raw materials evenly, add 7 kg of mod...

Embodiment 3

[0084] A kind of gun clay provided by the embodiment of the present invention is prepared according to the following requirements: 10 kg of coke powder raw material with a particle size of 1-0 mm, 3 kg of asphalt raw material with a particle size of 1-0 mm, 20 kg of silicon carbide raw material with a particle size of 1.5-0 mm, 30kg of 3-0mm corundum raw materials, 10kg of ferrosilicon nitride raw materials with a particle size of less than 0.074mm, 4kg of sericite raw materials with a particle size of less than 0.088, 12kg of spherical clay raw materials with a particle size of less than 0.088, 5kg of 80-mesh kyanite raw materials, and metallic aluminum raw materials with a particle size of less than 0.074mm 1.5kg, 1.5kg of metal silicon raw material with particle size less than 0.074mm, 3kg of 5μα alumina raw material.

[0085] Mix the above-mentioned various raw materials according to the ratio of the present invention, mix the prepared various raw materials evenly, add 7 kg...

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Abstract

The invention discloses stemming and a method for preparing the same, wherein the stemming is easily opened, prevents iron penetration, resists etching of scrap iron in slag and suppresses broaching. The method includes the steps: uniformly mixing dry materials of coke powder, asphalt, silicon carbide, corundum, ferrosilicon nitride, sericite, ball clay, disthene, metal silicon, metal aluminum and activated alpha-Al2O3 micro-powder; adding coal tar and coal tar modified phenolic resin to serve as bonding agents; and adding and rolling coal tar modified phenolic resin after rolling the dry materials and the bonding agents to obtain the stemming. During specific implementation, various components of the stemming can be correspondingly adjusted according to a blast furnace production process operation system, so that ideal service effects are achieved in terms of easiness in opening, prevention of iron penetration, resistance to etching of the scrap iron in the slag, broaching suppression and the like.

Description

technical field [0001] The invention relates to a refractory material for a blast furnace, and in particular to a gun clay and a preparation method thereof. Background technique [0002] In recent years, with the continuous improvement of the level of smelting technology and equipment and the requirements for the comprehensive energy consumption of blast furnaces, more powerful steel companies in my country have built large blast furnaces with a capacity of more than 4,000 cubic meters. Large blast furnaces are also due to their large amount of iron. The requirements for the quality of iron gun mud are getting higher and higher. Generally speaking, when the tap hole of a blast furnace is blocked with taphole mud, the tapping channel should be filled with taphole mud, and a mud bag should be formed in the hearth to maintain a sufficient depth for the tap hole; the taphole mud should maintain a stable hole diameter when tapping , the iron is evenly tapped; after the iron is ta...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 冯建设徐春桥徐香汝王全岭杨可
Owner 北京首钢耐材炉料有限公司
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