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Blast furnace taphole filled aluminum stemming and preparation method thereof

A blast furnace tapping and aluminum technology is applied in the field of high-temperature metallurgical refractory materials, which can solve the problems of poor high temperature toughness, environmental pollution, poor high temperature strength of blast furnace mud, etc. Effect

Active Publication Date: 2011-09-14
XUZHOU SUPAI HIGH TEMPERATURE NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the current production status of many gun mud manufacturers in my country and the problems existing in the use process of gun mud, this invention introduces high-carbon binder modified liquid tar T60 and modified asphalt powder CP, which solves the problem of poor high-temperature strength and high-temperature toughness of gun mud in my country. Good, environmental pollution issues and durability, economical issues

Method used

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  • Blast furnace taphole filled aluminum stemming and preparation method thereof

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Effect test

Embodiment 1

[0017] According to the 2200m of a blast furnace in Baotou 3 Blast furnace parameters, according to the formula standard to prepare aluminum gun clay, which is composed of powder and modified liquid tar, in which the components in the powder are: corundum 40%, silicon carbide 30%, Al 2 o 3 Micropowder 4%, ball clay 8%, plasticizer 2%, graphite 2%, expansion agent aluminum silicate 4%, metal silicon powder 3%, titanium corundum 4%, modified asphalt powder 3%; modified liquid tar The mass percentage is 15%

[0018] Prepare a kind of blast furnace taphole filling aluminum gun clay according to the following steps: be 40% corundum by mass percentage, 30% silicon carbide, 4% micropowder, 8% ball clay, 2% plasticizer, 2% of graphite, 4% of expansion agent aluminum silicate, 3% of metal silicon powder, 4% of titanium corundum, 3% of modified asphalt powder, the fine powder is premixed for later use, and the critical particle size of the above fine powder is 3mm , the bone meal rat...

Embodiment 2

[0020] According to the 1780m of a steel factory in Jiangxi 3 Blast furnace parameters, according to the formula standard, the aluminum gun clay is prepared, which is composed of powder and modified liquid tar. The components in the powder are: corundum 45%, silicon carbide 18%, Al 2 o 3 Micro powder 3%, ball clay 10%, plasticizer 3%, graphite 4%, expansion agent aluminum silicate 5%, metal silicon powder 5%, titanium corundum 3%, modified asphalt powder 4%; modified liquid tar The mass percentage is 18%.

[0021] Prepare a kind of blast furnace taphole filling aluminum matter gun mud according to the following steps: be 45% corundum by mass percentage, 18% silicon carbide, 3% Si. 2 Micropowder, 10% ball clay, 3% plasticizer, 4% graphite, 5% expansion agent aluminum silicate, 5% metal silicon powder, 3% titanium corundum, 4% modified asphalt powder, The fine powder is pre-mixed for later use. The critical particle size of the above-mentioned fine powder is 3mm, and the bone...

Embodiment 3

[0023] According to a blast furnace in Anshan 3200m 3 Blast furnace parameters, according to the formula standard, the aluminum gun clay is prepared, which is composed of powder and modified liquid tar. The components in the powder are: corundum 50%, silicon carbide 12%, Al 2 o 3 Micropowder 5%, ball clay 12%, plasticizer 1%, graphite 3%, expansion agent aluminum silicate 3%, metal aluminum powder 4%, titanium corundum 5%, modified asphalt powder 5%; modified liquid tar The mass percentage is 20%

[0024] According to the following steps, a kind of blast furnace tap hole is prepared to fill aluminum gun clay: the corundum that the mass percentage is 50%, the silicon carbide of 12%, the Al of 5% 2 o 3 Micropowder, 12% ball clay, 1% plasticizer, 3% graphite, 3% expansion agent aluminum silicate, 4% metal silicon powder, 5% titanium corundum, 5% modified asphalt powder, The fine powder is pre-mixed for later use. The critical particle size of the above-mentioned fine powder i...

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Abstract

The invention relates to blast furnace taphole filled aluminum stemming and a preparation method thereof and belongs to the field of high-temperature metallurgical fireproof materials. The preparation method comprises the following steps of: premixing 40 to 50 mass percent of corundum, 12 to 30 mass percent of silicon carbide, 3 to 5 mass percent of micropowder, 8 to 12 mass percent of ball clay,1 to 3 mass percent of plasticizer, 2 to 4 mass percent of graphite, 3 to 5 mass percent of expanding agent aluminium silicate, 3 to 5 mass percent of metal powder, 3 to 5 mass percent of titanium corundum and 3 to 5 mass percent of modified asphalt powder for later use; adding the mixture into a wheel roller, and pre-rolling for 5 minutes; adding 15 to 20 mass percent of modified liquid tar; performing high-speed wheel rolling for 30 to 35 minutes, so that the Marshall value is 4 to 16 MPa; and measuring the Marshall value again after 3 days, wherein if the Marshall value is 8 to 24 MPa, theproduct is qualified. By the blast furnace taphole filled aluminum stemming and the preparation method thereof, problems of low high-temperature strength, low high-temperature toughness and environmental pollution of the stemming are solved; and problems of shallow iron notch, broken iron notch and spattering are solved at the same time.

Description

technical field [0001] The invention discloses a blast furnace taphole filled with aluminum gun mud and a preparation method thereof, belonging to the field of high-temperature metallurgical refractory materials. Background technique [0002] At present, most of the anhydrous taphole mud used in China use coal tar and asphalt as binders. The residual carbon content of tar is 20-30, which belongs to homogeneous brittle combination, low bonding strength, and easy to break due to sudden changes in high temperature; and the content of benzoic acid As high as 10,000-13,000ppm (carcinogens), the thick black smoke in the tapping process diffuses throughout the casting plant, causing great harm to the human body, which is not in line with environmental protection and emission reduction; broken iron holes, splashes, and difficult iron holes often occur Opening and other phenomena seriously affect the life of the blast furnace, which restricts the high efficiency, stability and smooth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 吴树全孙中强
Owner XUZHOU SUPAI HIGH TEMPERATURE NEW MATERIAL CO LTD
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