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Castable for blast furnace slag chute and preparation method thereof

A blast furnace slag and castable technology, which is applied in the field of refractory materials involved in blast furnace slag treatment, can solve the problems of slag sticking, low service life, iron sticking, etc., and achieve the effects of high refractoriness, high strength and good thermal shock resistance.

Active Publication Date: 2021-03-09
GANGCHENG GRP LIANGSHAN RUIHAI IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is to provide a castable for blast furnace slag chute and its preparation method for blast furnace slag treatment. The castable for blast furnace slag chute can solve the problems of low service life, iron and slag staining

Method used

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  • Castable for blast furnace slag chute and preparation method thereof
  • Castable for blast furnace slag chute and preparation method thereof
  • Castable for blast furnace slag chute and preparation method thereof

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preparation example Construction

[0027] The preparation method of castable for blast furnace slag chute comprises the following steps:

[0028] a. According to the requirements, control raw materials homogenized bauxite, coke gem, white corundum, bauxite powder, white corundum powder, aluminum oxide powder, CA70 cement, silica dust powder, Guangxi white mud, admixture sodium hexametaphosphate, stainless steel Content and particle size of steel fiber and explosion-proof fiber;

[0029] b. Send the aggregate part of 12mm-1mm into the drum mixer according to the ratio for mixing and stirring. After mixing and stirring for a certain period of time, add bauxite powder, white corundum powder, aluminum oxide powder, Ca70 cement, Silica dust powder, Guangxi white mud, admixture sodium hexametaphosphate, stainless steel fiber and explosion-proof fiber are stirred.

[0030] According to the actual production volume, put the above aggregate particles into a drum mixer for mixing and stirring. After mixing and stirring ...

Embodiment 1

[0048] 21 parts by weight of qualified 8mm-12mm homogenized alumina, 19 parts by weight of 3-8mm homogenized alumina, 11 parts by weight of burnt gems, and 10 parts by weight of white corundum are sent into a drum mixer for mixing and stirring. After mixing and stirring for 2 minutes, add 9 parts by weight of bauxite powder, 9 parts by weight of white corundum powder, 9 parts by weight of aluminum oxide micropowder, 8 parts by weight of Ca70 cement, 2 parts by weight of silica dust powder, 2 parts by weight of Guangxi white mud and Add 0.2 parts by weight of industrial grade sodium hexametaphosphate, 0.4 parts by weight of stainless steel fiber, and 0.04 parts by weight of explosion-proof fiber into the drum mixer for mixing and stirring. After mixing and stirring for 4 minutes, pass the mixed material through the tee Put the valve feeding device into a dry ton bag, pack it at 500kg / bag, fasten the opening mark and put it in storage for standby, take samples to test the physica...

Embodiment 2

[0054] 22 parts by weight of 8mm-12mm homogenized alumina, 18 parts by weight of homogenized alumina of 3-8mm, 12 parts by weight of burnt gems, and 9 parts by weight of white corundum are sent into the drum mixer for mixing and stirring. After mixing and stirring for 2 minutes, add 10 parts by weight of bauxite powder, 8 parts by weight of white corundum powder, 10 parts by weight of aluminum oxide micropowder, 7 parts by weight of Ca70 cement, 2 parts by weight of silica dust powder, 2 parts by weight of Guangxi white mud and Add 0.2 parts by weight of industrial grade sodium hexametaphosphate, 0.3 parts by weight of stainless steel fiber, and 0.05 parts by weight of explosion-proof fiber into the drum mixer for mixing and stirring. After mixing and stirring for 4 minutes, pass the mixed material through the tee Put the valve feeding device into a dry ton bag, pack it at 500kg / bag, tie the opening mark and put it in storage for standby, take samples to test the physical and c...

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Abstract

The invention belongs to the technical field of refractory materials, and particularly relates to a blast furnace slag chute castable and a preparation method thereof. The raw material of the blast furnace slag chute castable is composed of the following components by weight: 8mm<homogenized alumina particle size≤12mm, 20-23%, 3mm<homogenized alumina particle size≤8mm, 17-20%, 1mm ≤ 8~12% for coke gemstone particle size ≤ 3mm, 9~11% for 0mm < white corundum particle size ≤ 1mm, 9~10% for bauxite powder with particle size ≤ 0.074mm, and 9~10% for white corundum powder with particle size ≤ 0.044mm 8~10%, particle size ≤0.005mm, Al2O3 micropowder is 8~10%, particle size≤0.074mmCA-70 cement is 5~10%, particle size≤0.074mm, silica dust powder is 1~3%, particle size≤0.074mm Diameter ≤0.074mm Guangxi white mud 2-3%; plus 0.1-0.3% industrial grade sodium hexametaphosphate, 0.3-0.6% stainless steel fiber, 0.03-0.06% explosion-proof fiber by the total weight of the above raw materials. The blast furnace slag chute castable has the characteristics of good anti-sticking performance, high strength, stable thermodynamic performance and the like.

Description

technical field [0001] The invention belongs to the technical field of refractory materials involved in blast furnace slag treatment, and in particular relates to a blast furnace slag chute castable and a preparation method thereof. Background technique [0002] After the molten iron flows out of the taphole, it is separated from slag and iron, and the liquid slag passes through the lower slag ditch and is blocked by the slag stacking gate into the slag tank. Taking Xichang Iron and Steel Vanadium Ironmaking Plant as an example, there are nearly 30 slag tanks for dumping high Slag: After tapping, the slag tank filled with blast furnace slag is transported by rail to the blast furnace slag treatment site. [0003] In order to deal with the blast furnace slag reasonably, fully recover the mixed molten iron and slag in the slag tank, and buffer the scour force generated when the blast furnace slag is overturned, a chute with a certain inclination is placed below it when the bla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/101
CPCC04B35/101C04B2235/3418C04B2235/349C04B2235/447C04B2235/5216C04B2235/77C04B2235/96C04B2235/9615
Inventor 黄国炳黄天翔黄军成邓小兵高亮胡志豪陈超
Owner GANGCHENG GRP LIANGSHAN RUIHAI IND
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