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Refining heat insulation covering agent and preparation method thereof

A thermal insulation covering agent and raw material technology, which is applied in the field of steelmaking, can solve problems such as unsatisfactory thermal insulation effect, unfavorable steelmaking process, and energy loss of molten iron, so as to facilitate slag cleaning operations, reduce dust pollution, and reduce sticky iron and The effect of sticky package

Active Publication Date: 2012-08-01
芜湖县天海耐火炉料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the process of transporting molten iron from the iron plant to the steel plant and releasing it after arriving at the steel plant, the temperature will continue to decrease, and the temperature of the molten iron will fluctuate greatly. At the same time, this situation is not conducive to the steelmaking process. At present, different refining and thermal insulation covering agents are used for thermal insulation treatment in China, but the effect of thermal insulation has not been ideal. It wastes energy but the problem cannot be solved. It is urgent Need a kind of new low-cost high-efficiency refining thermal insulation covering agent and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1: Refining thermal insulation covering agent, its composition raw materials are: 35 parts of rice husk ash, 28 parts of silicon dioxide, 3 parts of magnesium oxide, 5 parts of attapulgite, 4 parts of calcium oxide, 13 parts of aluminum oxide, fluorite 3 parts, 8 parts of expanded vermiculite and 5 parts of carbon black.

[0012] The preparation method of refining thermal insulation covering agent comprises the following steps:

[0013] Each raw material is weighed according to the weight portion of the constituent raw materials, and then mixed and stirred for 30-40 minutes, the processed starch and water are pelletized and dried to obtain a finished product.

Embodiment 2

[0014] Example 2: Refining thermal insulation covering agent, the weight parts of its raw materials are: 40 parts of rice husk ash, 30 parts of silicon dioxide, 5 parts of magnesium oxide, 8 parts of attapulgite, 5 parts of calcium oxide, 15 parts of aluminum oxide, fluorite 5 parts, 10 parts of expanded vermiculite and 8 parts of carbon black.

[0015] The preparation method of refining thermal insulation covering agent comprises the following steps:

[0016] Each raw material is weighed according to the weight portion of the constituent raw materials, and then mixed and stirred for 30-40 minutes, the processed starch and water are pelletized and dried to obtain a finished product.

Embodiment 3

[0017] Example 3: Refining thermal insulation covering agent, the weight parts of its raw materials are: 45 parts of rice husk ash, 32 parts of silicon dioxide, 8 parts of magnesium oxide, 10 parts of attapulgite, 6 parts of calcium oxide, 18 parts of aluminum oxide, fluorite 8 parts, expanded vermiculite 12 parts and carbon black 10 parts.

[0018] The preparation method of refining thermal insulation covering agent comprises the following steps:

[0019] Each raw material is weighed according to the weight portion of the constituent raw materials, then mixed and stirred for 30-40 minutes, pelletized and dried to obtain a finished product.

[0020] The thermal insulation effect data comparison of the refining thermal insulation covering agent of the present invention:

[0021] project Amount Fe / t Average cooling rate (℃ / min) Example 1 3 O.43 Example 2 2.5 0.45 Example 3 2.5 0.46

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PUM

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Abstract

The invention discloses a refining heat insulation covering agent and a preparation method thereof. The refining heat insulation covering agent mainly comprises the following raw materials in part by weight: 35 to 45 parts of rice hull ash, 28 to 32 parts of silicon dioxide, 3 to 8 parts of magnesium oxide, 5 to 10 parts of attapulgite, 4 to 6 parts of calcium oxide, 13 to 18 parts of aluminum sesquioxide, 3 to 8 parts of fluorite, 8 to 12 parts of expanded vermiculite and 5 to 10 parts of carbon black. The preparation method comprises the following steps of: mixing the raw materials; stirring for 30 to 40 minutes; pelletizing; and drying to obtain a finished product. The covering agent has a reasonable raw material formula, and contains a heat generating agent and an oxygen supplying agent, so that the fusion of the covering agent is facilitated, and the phenomena of iron adhesion and package adhesion are reduced; the covering agent is high in heat preservation performance, and the magnesium oxide has the functions of adjusting alkalinity and reducing the adhesive properties of the heat insulation covering agent and a cylinder packing, so that the slag removing operation of a molten iron ladle is facilitated; and the heat insulation covering agent is granular, so that dust pollution is greatly lightened.

Description

technical field [0001] The invention relates to the technical field of steelmaking, in particular to a refining thermal insulation covering agent and a preparation method thereof. Background technique [0002] During the process of transporting molten iron from the iron factory to the steel factory and releasing it after arriving at the steel factory, the temperature will continue to drop, and the temperature fluctuation of the molten iron will be relatively large, so that the energy of the molten iron will continue to be lost. At the same time, this situation is not conducive to smelting Steel technology, at present, different refining and heat preservation covering agents are used in China for heat preservation treatment, but the effect of heat preservation has not been ideal, wasting energy but the problem cannot be solved, there is an urgent need for a new low-cost high-efficiency refining heat preservation covering agent and its Preparation. Contents of the invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/00B22D11/111
Inventor 吴大宏童振兰
Owner 芜湖县天海耐火炉料有限公司