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Electric arc furnace lid and preparation method thereof

A technology of electric arc furnace and furnace cover, which is applied in the direction of electric furnace, furnace, furnace type, etc., can solve the problems of short service life and poor high temperature resistance, and achieve the effect of long service life, strong high temperature resistance and good compressive strength

Active Publication Date: 2017-10-24
SICHUAN HEYI ELECTRIC FURNACE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides an electric arc furnace cover and a preparation method thereof, which can effectively solve the problems of poor high temperature resistance and short service life of the existing electric arc furnace cover

Method used

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  • Electric arc furnace lid and preparation method thereof
  • Electric arc furnace lid and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] An electric arc furnace cover, comprising the following components in parts by weight: 5 parts of metal aluminum powder, 10 parts of stainless steel fiber, 7 parts of chromium oxide green, 0.5 part of sodium tripolyphosphate, 0.1 part of sodium hexametaphosphate, 8-15mm 65 parts of 85 bauxite, 70 parts of 85 bauxite of 1-3mm, 57 parts of 70 sintered mullite of 3-8mm, 75 parts of white corundum with particle size less than 1mm, 35 parts of F220 white corundum, and F325 white 30 parts of corundum, 15 parts of sintered spinel of F220, 25 parts of 71 aluminate cement and 8 parts of microsilica powder; the purity of microsilica powder is 92%.

[0021] The preparation method of the above-mentioned electric arc furnace cover includes: mixing each component in the formula, stirring evenly, then adding water and stirring evenly, then vibrating and molding, and finally drying to obtain the prepared.

Embodiment 2

[0023] An electric arc furnace cover, comprising the following components in parts by weight: 10 parts of metal aluminum powder, 14 parts of stainless steel fiber, 10 parts of chromium oxide green, 1.0 part of sodium tripolyphosphate, 0.3 part of sodium hexametaphosphate, 8-15mm 75 parts of 85 bauxite, 75 parts of 85 bauxite of 1-3mm, 65 parts of 70 sintered mullite of 3-8mm, 85 parts of white corundum with particle size less than 1mm, 45 parts of F220 white corundum, and F325 white 40 parts of corundum, 25 parts of sintered spinel of F220, 35 parts of 71 aluminate cement and 12 parts of microsilica powder; the purity of microsilica powder is 92%.

[0024] The preparation method of the above-mentioned electric arc furnace cover includes: mixing each component in the formula, stirring evenly, then adding water and stirring evenly, then vibrating and molding, and finally drying to obtain the prepared.

Embodiment 3

[0026] An electric arc furnace cover, comprising the following components in parts by weight: 6 parts of metal aluminum powder, 10 parts of stainless steel fiber, 7 parts of chromium oxide green, 0.5 part of sodium tripolyphosphate, 0.1 part of sodium hexametaphosphate, 8-15mm 68 parts of 85 bauxite, 70 parts of 85 bauxite of 1-3mm, 58 parts of 70 sintered mullite of 3-8mm, 78 parts of white corundum with particle size less than 1mm, 38 parts of F220 white corundum, and F325 white 33 parts of corundum, 18 parts of sintered spinel of F220, 28 parts of 71 aluminate cement and 8 parts of microsilica powder; the purity of microsilica powder is 92%.

[0027] The preparation method of the above-mentioned electric arc furnace cover includes: mixing each component in the formula, stirring evenly, then adding water and stirring evenly, then vibrating and molding, and finally drying to obtain the prepared.

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Abstract

The present invention discloses an electric arc furnace lid, which comprises, by weight, 5-10 parts of metallic aluminum powder, 10-14 parts of stainless steel fiber, 7-10 parts of chromium oxide green, 0.5-1.0 part of sodium tripolyphosphate, 0.1-0.3 part of sodium hexametaphosphate, 65-75 parts of 8-15 mm 85 bauxite, 70-75 parts of 1-3 mm 85 bauxite, 57-65 parts of 3-8 mm 70 sintered mullite, 75-85 parts of white fused alumina with a particle size of less than 1 mm, and the like. The preparation method comprises: mixing various components of the formula, uniformly stirring, adding water, uniformly stirring, carrying out vibration molding, and finally drying to prepare the electric arc furnace lid. According to the present invention, the prepared electric arc furnace lid has advantages of high bulk density, good compressive strength, good flexural strength and good erosion resistance, can provide advantages of good corrosion resistance and cracking resistance during the use, and further has advantages of significantly improved service lifer and effectively reduced raw material consumption.

Description

technical field [0001] The technical field of the electric arc furnace cover of the present invention particularly relates to an electric arc furnace cover and a preparation method thereof. Background technique [0002] With the rapid development of my country's iron and steel industry, new intensified smelting processes are constantly being adopted, and the electric furnace in the pot is developing towards large-scale and ultra-high power, but it brings about increasingly harsh conditions for the use of refractory materials, and the service life of the furnace cover is reduced year by year, etc. question. The electric arc furnace cover is an extremely important part in the production process of the electric furnace. Its service life significantly affects the operation rate and labor intensity of the electric furnace, and has a certain impact on the quality of molten steel and production safety. [0003] Since the center of the furnace cover is vulnerable to the high-tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/105C21C5/52
CPCC04B35/105C04B2235/3222C04B2235/3241C04B2235/3418C04B2235/3463C04B2235/402C04B2235/447C04B2235/524C04B2235/602C21C5/52Y02P10/20
Inventor 王习华
Owner SICHUAN HEYI ELECTRIC FURNACE TECH CO LTD
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