Blast furnace mud gun with low content of benzopyrene

A technology of benzopyrene content, applied in blast furnaces, blast furnace details, blast furnace parts and other directions, can solve the problems of serious pollution and high content of benzopyrene, and achieve enhanced operating performance, reduced amount of harmful gases, and improved durability. Effect

Inactive Publication Date: 2009-11-18
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the high content of benzopyrene in the existing gun mud and the serious pollution, and provide a kind of gun mud with low content of benzopyrene, which does not produce toxic black and yell

Method used

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  • Blast furnace mud gun with low content of benzopyrene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A kind of blast furnace clay with low benzopyrene content: 10 parts of carbon-containing resin with a fixed carbon content of 85% by mass, and its benzopyrene content is 950ppm; the components and parts by weight are: 8 parts of high alumina bauxite, 37 parts of corundum, 5 parts of silicon carbide, 10 parts of clay, 8 parts of coke powder, 2 parts of ferrosilicon nitride and 5 parts of sericite are uniformly mixed and the weight part of the refractory matrix is ​​75 parts; It is: 3 parts of denatured alcohol, 5 parts of ethylene glycol, and the parts by weight of the carbon-containing resin solvent are 8 parts.

[0016] Add 8 parts by weight of carbon-containing resin solvent to the above-mentioned refractory matrix with 75 parts by weight, mix and stir evenly, and then add 10 parts of carbon-containing resin with a fixed content of 85% by mass Mix and roll evenly, and pack for use after extruding mud strips through a mud extruder.

Embodiment 2

[0018] A blast furnace clay with low benzopyrene content: 15 parts of carbon-containing resin with a fixed carbon content of 50% by mass, and its benzopyrene content is 760ppm; the components and parts by weight are: 6 parts of high alumina bauxite, 30 parts of corundum, 12 parts of silicon carbide, 7 parts of clay, 15 parts of coke powder, 5 parts of ferrosilicon nitride and 7 parts of sericite are uniformly mixed and the weight part of the refractory matrix is ​​82 parts; It is: 0.8 parts of industrial alcohol, 1 part of ethylene glycol, and the weight part of the carbon-containing resin solvent is 1.8 parts.

[0019] Add 1.8 parts by weight of carbon-containing resin solvent to the above-mentioned refractory matrix with 82 parts by weight, mix and stir evenly, and then add 15 parts of carbon-containing resin with a fixed content of 50% by mass Mix and roll evenly, and pack for use after extruding mud strips through a mud extruder.

Embodiment 3

[0021] A blast furnace clay with low benzopyrene content: 25 parts of carbon-containing resin with a fixed carbon content of 30% by mass, and its benzopyrene content is 850ppm; the components and parts by weight are: 20 parts of high alumina bauxite, 32 parts of corundum, 18 parts of silicon carbide, 3 parts of clay, 12 parts of coke powder and 9 parts of sericite are uniformly mixed to form a refractory matrix of 94 parts by weight; the components and parts by weight are: industrial alcohol 0.01 part, 0.05 part of ethylene glycol constitutes 0.06 part by weight of the carbon-containing resin solvent.

[0022] Add 0.06 parts by weight of carbon-containing resin solvent to the above-mentioned refractory matrix with 94 parts by weight, mix and stir evenly, and then add 25 parts of carbon-containing resin with a fixed content of 30% by mass Mix and roll evenly, and pack for use after extruding mud strips through a mud extruder.

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Abstract

The invention discloses a blast furnace mud gun with low content of benzopyrene which is not more than 1000 ppm. The invention comprises the following components according to the parts by weight: 10-25 parts of carbonaceou resin with 30-85% of fixed carbon content (weight percentage), 75-121 parts of fire proof material matrix, and 0.06-15 parts of carbonaceou resin solvent. The invention has low content of benzopyrene which is not more than 1000 ppm; the amount of harmful gases is greatly reduced, the operation performance of the mud gun is improved, the high temperature intensity of the mud gun is high, the combination performance is good, and after sintering the anti-corrosion property is increased, therefore the durability of the mud gun is improved so as to play an active role of maintaining the service life of blast furnace.

Description

technical field [0001] The invention belongs to auxiliary refractory materials for ironmaking, in particular to refractory materials used for blast furnace iron hole maintenance. Background technique [0002] At present, the binders of blast furnace mud are mainly tar, anthracene oil or phenolic resin, which contain harmful carcinogens such as benzene and benzopyrene, and the yellow smoke volatilizes with heating and use, seriously affecting the health of operators. 1, 2-type benzopyrene is a chemical product that is strictly controlled and used abroad. Studies have shown that for every 1% increase in benzopyrene content in the air, the mortality rate of lung cancer will increase by 5%. Therefore, European countries began to strictly control the use of asphalt, anthracene oil, and tar combination products with high benzopyrene content. Moreover, there is also certain environmental pollution for the gun clay combined with phenolic resin, so it is necessary to develop new env...

Claims

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Application Information

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IPC IPC(8): C04B35/66C21B7/04
Inventor 徐国涛熊亚非李怀远李淑忠邓棠张洪雷
Owner 武汉钢铁有限公司
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