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Raw material formulation for furnace cover of cement-less entire electric furnace

An electric furnace, cement-free technology, applied in the direction of electric furnace, furnace, furnace type, etc., to achieve the effect of improving corrosion resistance, improving high temperature performance, and good thermal shock resistance

Inactive Publication Date: 2009-12-16
陈红良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, firing high-alumina electric furnace roof bricks and ordinary cement prefabricated blocks can no longer meet the requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A raw material formula for a cementless integral electric furnace cover, including main ingredients, the main ingredients (weight percentage) are composed of 30% corundum, 40% super high alumina clinker, 20% white corundum fine powder, 2% Chromium oxide chlorine, 5% silicon micropowder, 3% aluminum sol powder, the raw material formula also includes auxiliary materials water reducer and organic fiber, the addition amount is 0.10% and 0.03% of the total weight of the main material respectively.

Embodiment 2

[0018] A raw material formula for a cementless integral electric furnace cover, including main ingredients, the main ingredients (weight percentage) are composed of 35% corundum, 35% super high alumina clinker, 20% white corundum fine powder, 2% Chromium oxide chlorine, 5% silicon micropowder, 3% aluminum sol powder, the raw material formula also includes auxiliary materials water reducer and organic fiber, the addition amount is 0.15% and 0.035% of the total weight of the main material respectively.

Embodiment 3

[0020] A raw material formula for a cementless integral electric furnace cover, comprising main ingredients, the main ingredients (weight percentage) are composed of 40% corundum, 30% super high alumina clinker, 20% white corundum fine powder, 2% Chromium oxide chlorine, 5% silicon micropowder, 3% aluminum sol powder, the raw material formula also includes auxiliary materials water reducer and organic fiber, the addition amount is 0.10% and 0.03% of the total weight of the main material respectively.

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Abstract

The invention discloses a raw material formulation for a furnace cover of a cement-less entire electric furnace, which comprises a major material, wherein the main material consists of the following components in percentage by weight: 30 to 50 percent of corundum, 15 to 40 percent of extra grade high-alumina clinker, 20 to 30 percent of white alundum fine powder, 2 to 5 percent of chromium oxide green, 1 to 5 percent of silicon micro powder, and 1 to 5 percent of aluminum sol powder. The raw material formulation also comprises an auxiliary material which consists of a water reducing agent and organic fibers accounting for 0.10 to 0.20 percent and 0.03 to 0.08 percent of the total weight of the major material respectively. After adopting the chromium oxide green and the aluminum sol, the raw material formulation can improve the erosion resistance of the manufactured products and improve the high temperature performance of the product which is influenced by impurities due to the addition of the cement. The electric furnace cover manufactured according to the raw material formulation has the advantages of high density, high strength, good thermal shock resistance and erosion resistance.

Description

technical field [0001] The invention relates to a raw material formula for a cementless integral electric furnace cover. Background technique [0002] With the development of the iron and steel industry, the amount of scrap iron and steel in the world has increased, and the electric arc furnace has developed extremely rapidly. Especially in recent years, a series of new technologies have been developed for electric arc furnaces, such as water-cooled furnace walls and water-cooled furnace covers. The proportion of steelmaking in high-power and ultra-high-power electric arc furnaces has increased, and the pace of steelmaking has accelerated. As the furnace cover of the electric furnace, it is affected by more intense heat radiation, thermal shock and more dust. Therefore firing high-alumina electric furnace roof bricks and common cement prefabricated blocks can no longer meet the requirements. In addition, various mineral products continue to rise in price, reducing steelmaki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C21C5/52
CPCY02P10/20
Inventor 陈红良陈雪飞蒋志忠涂妤璐
Owner 陈红良