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Environment-friendly carbon-free tundish dry material

An environmentally friendly, metal silicon powder technology, applied in the field of unshaped refractory materials, can solve the problems of environmental pollution, unfavorable clean steel and environmental protection requirements, and achieve the effects of long life, green life, and easy disintegration

Active Publication Date: 2014-08-13
北京利尔高温材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide an environmentally friendly carbon-free tundish dry material to overcome the defects in the prior art that a large amount of harmful and irritating gases generated by the use of phenolic resin pollute the environment and are not conducive to clean steel and environmental protection requirements

Method used

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  • Environment-friendly carbon-free tundish dry material

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0047] The environment-friendly carbon-free tundish dry material described in this embodiment comprises the following composition by weight percentage: 87.4% of sintered magnesia, 1.5% of metal silicon powder, 1.5% of bentonite, 9% of environment-friendly binder, and 0.6% of phenolic resin.

[0048] The production process of the environmentally friendly carbon-free tundish dry material described in this example is: weighing according to the above weight percentage, then putting the fine powder into a small mixer and mixing for 18 minutes, then putting it into a small bag for later use. Then put the granules, binder and mixed fine powder into the blender and mix thoroughly for 8 minutes, then discharge, weigh and pack, and take samples for inspection.

[0049] The performance of the environmentally friendly carbon-free tundish dry material described in this embodiment is as follows:

[0050]

Embodiment 2

[0052] The environmental-friendly carbon-free tundish dry-type material described in this embodiment includes the following composition by weight percentage: 95% fused magnesia, 0.6% metal silicon powder, 0.8% bentonite, 3% environmentally friendly binder, and 0.6% phenolic resin.

[0053] The production process of the environmentally friendly carbon-free tundish dry material described in this example is: weighing according to the above weight percentage, then putting the fine powder into a small mixer and mixing for 18 minutes, then putting it into a small bag for later use. Then put the granules, binder and mixed fine powder into the blender and mix thoroughly for 8 minutes, then discharge, weigh and pack, and take samples for inspection.

[0054] The performance of the environmentally friendly carbon-free tundish dry material described in this embodiment is as follows:

[0055]

Embodiment 3

[0057] The environment-friendly carbon-free tundish dry material described in this embodiment includes the following composition by weight percentage: 92% of electric fused leather sand, 0.6% of metal silicon powder, 0.8% of bentonite, 6.6% of environment-friendly binder, and 0% of phenolic resin.

[0058] The production process of the environmentally friendly carbon-free tundish dry material described in this example is: weighing according to the above weight percentage, then putting the fine powder into a small mixer and mixing for 18 minutes, then putting it into a small bag for later use. Then put the granules, binder and mixed fine powder into the blender and mix thoroughly for 8 minutes, then discharge, weigh and pack, and take samples for inspection.

[0059] The performance of the environmentally friendly carbon-free tundish dry material described in this embodiment is as follows:

[0060]

[0061]

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Abstract

The invention relates to the field of indefinite form refractory materials, in particular to an environment-friendly carbon-free tundish dry material. The environment-friendly carbon-free tundish dry material comprises the components in percentage by weight as follows: 87.4%-95% of magnesia, 0.2%-1.5% of metal silica powder, 0.2%-1.5% of bentonite, 3%-9% of an environment-friendly bonding agent and 0-6% of a phenolic resin. The environment-friendly carbon-free tundish dry material mainly adopts the magnesia as a main raw material, and a novel environment-friendly bonding agent is adopted to replace a solid phenolic resin, so that no irritant gas is generated or only a trace of irritant gas is generated in the baking process; neither hydrogen nor carbon is increased for molten steel during continuous casting, so that the smelting of ultra-low carbon steel is guaranteed; further, other impurities can not be taken into the molten steel, and the collapse is prevented; and the environment-friendly carbon-free tundish dry material has the advantages of high strength, convenience in construction, simplification of dissolution, long service life, environmental protection and the like.

Description

technical field [0001] The invention relates to the field of unshaped refractory materials, in particular to an environment-friendly carbon-free tundish dry material. Background technique [0002] With the development of the world's steel production technology, the concept of tundish metallurgy, or tertiary metallurgy, has emerged. The tundish has changed from a simple molten steel transition container in the continuous casting system to a refining device with multiple refining functions. Tundish refining technology has also become It is one of the important technologies in clean steel production and forms a relatively independent tundish metallurgy. Therefore, refining tundish refractories has become the focus of attention in the world. [0003] With the unremitting efforts of scientific and technological workers, my country's iron and steel smelting technology has made great progress, and clean steel has also become a product that some domestic steel mills are vying for i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 于九利刘丽曹仁锋赵伟刘靖轩胡玲军赵冉黄建车晓梅任林张艳凤焉凤明樊浩勇
Owner 北京利尔高温材料股份有限公司