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Unfired pyrophyllite hot metal ladle lining material and preparation method thereof

The invention relates to a technology for molten iron tank and pyrophyllite, which is applied in the field of non-burning pyrophyllite-based molten iron tank lining material and its preparation field, and can solve the problems that restrict large-scale, high-efficiency, fast-paced iron-making production, large damage to tank lining refractories, The problem of high risk of clean-up operation is achieved, and the effect of simple construction, good integrity and smooth surface is achieved.

Active Publication Date: 2013-02-13
鞍山盛晨耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the small critical temperature difference of molten iron, when the molten iron is stored in the tank for a long time, it is very easy to cause coagulation and slag iron hanging in the tank, the cleaning operation is dangerous, the labor intensity is high, and the damage to the refractory material of the tank lining is great, and some have to renew the entire tank Lining, the loss is quite large, not only increases production costs, affects normal production, but also restricts the development of ironmaking production in the direction of large-scale, high-efficiency, and fast-paced. It is a weak link in the metallurgical process. Therefore, the research and development of A new type of tank lining material with slag iron is imminent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Non-burning pyrophyllite molten iron tank lining material, which is made of the following ingredients in proportion by weight: SiO 2 70; Al 2 o 3 25; calcium aluminate cement 5, explosion-proof fiber 0.1 part; said SiO 2 、Al 2 o 3 It is a mixture of one or more of pyrophyllite, bauxite, silica powder, and corundum. The particle size distribution requirements of raw materials are: 0~1mm accounts for 10%, 1~3mm accounts for 30%, and 3~5mm accounts for 20%; The preparation method is that the raw materials are put into a mixer according to the above ratio and mixed evenly, shaped in a brick press, dried and packaged, and the product is a shaped product.

Embodiment 2

[0015] Non-burning pyrophyllite molten iron tank lining material, which is made of the following ingredients in proportion by weight: SiO 2 55;Al 2 o 3 30; water glass 14.5, explosion-proof fiber 0.5 part; said SiO 2 、Al 2 o 3 It is a mixture of one or more of pyrophyllite, bauxite, silica powder, and corundum. The particle size distribution requirements of raw materials are: 0~1mm accounts for 10%, 1~3mm accounts for 30%, and 3~5mm accounts for 20%; The preparation method is that the raw materials are put into a mixer according to the above ratio and mixed evenly, shaped in a brick press, dried and packaged, and the product is a shaped product.

Embodiment 3

[0017] Non-burning pyrophyllite molten iron tank lining material, which is made of the following ingredients in proportion by weight: SiO 2 62;Al 2 o 3 25; calcium aluminate cement 9; 1 part of explosion-proof fiber, 2 parts of steel fiber, 1 part of sodium hexametaphosphate, the SiO 2 、Al 2 o 3 It is a mixture of one or more of pyrophyllite, bauxite, silica powder, and corundum. The particle size distribution requirements of raw materials are: 0~1mm accounts for 10%, 1~5mm accounts for 20%, 5~10mm accounts for 20%, 10~18mm accounts for 10%; the preparation method is to put the raw materials into the mixer according to the above ratio and mix them evenly, pour them into the mold, release the mold after solidification and pack them dryly, and the shape is determined according to the shape requirements of the use part.

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Abstract

The invention relates to an unfired pyrophyllite hot metal ladle lining material and a preparation method thereof. The invention is characterized in that the unfired pyrophyllite hot metal ladle lining material is prepared from the following components in parts by weight: 50-70 parts of SiO2, 25-35 parts of Al2O3, 315 parts of bonding agent, 0.1-1 part of explosion-proof fiber and 1-5 parts of steel fiber. The SiO2 is one or a mixture of pyrophyllite, bauxite and silicon micropowder; and the Al2O3 is one or a mixture of pyrophyllite, bauxite and corundum. The preparation method comprises the following steps: putting the raw materials into a mixing machine in proportion to be evenly mixed, molding in a brick press or die, drying and packaging. From the appearance, the product can be a molded part, prefabricated part or amorphous powder, and the color is greyish white. Compared with the prior art, the hot metal ladle lining material has the advantages of high high-temperature strength, long service life which is prolonged to more than 500 times, smooth surface and favorable integrity, and is free of firing and simple for construction.

Description

technical field [0001] The invention relates to a non-burning pyrophyllite molten iron tank lining material and a preparation method thereof. Background technique [0002] Due to the small critical temperature difference of molten iron, when the molten iron is stored in the tank for a long time, it is very easy to cause coagulation and slag iron hanging in the tank, the cleaning operation is dangerous, the labor intensity is high, and the damage to the refractory material of the tank lining is great, and some have to renew the entire tank Lining, the loss is quite large, not only increases production costs, affects normal production, but also restricts the development of ironmaking production in the direction of large-scale, high-efficiency, and fast-paced. It is a weak link in the metallurgical process. Therefore, the research and development of A new type of tank lining material with slag iron is imminent. Contents of the invention [0003] The purpose of the present in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 王洪金彭润民
Owner 鞍山盛晨耐火材料有限公司
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