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Bottom oxygen blowing method for fusing and casting refractory material

A melting and casting refractory material and furnace bottom blowing technology, which is applied in the field of furnace bottom oxygen blowing method for melting and casting refractory materials, can solve the problems of short service life of kiln, increased production cost, and low quality of electric melting products, so as to save raw materials, Effect of reducing porosity and accelerating flow

Inactive Publication Date: 2005-06-29
侯松发
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  • Application Information

AI Technical Summary

Problems solved by technology

The existence of the above-mentioned deficiencies leads to the low quality of electric melting products and the short service life of the kiln, which not only increases the production cost, but more importantly, turns a large amount of high-quality raw materials into industrial waste

Method used

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Embodiment Construction

[0010] The furnace bottom oxygen blowing method for melting and casting refractories according to the present invention includes feeding materials into the electric arc furnace, raising the temperature in the furnace to 1900-2300°C to melt the furnace material, and separating oil and water during the heating process in the furnace. The final compressed air and oxygen are blown into the inner melt through the oxygen lance through the air inlet at the bottom of the electric furnace. The pressure of the compressed air and oxygen is adjusted in the range of 0.05-1.5MPa gauge pressure by decompression equipment according to the difference of charge.

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PUM

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Abstract

Disclosed is an oxygen blowing from the bottom method foe fusion casting fire resistant material, which includes steps of feeding material into the electric furnace, melting the material in the temperature of 1900~2300deg.C, its characteristics include: in the course of temperature rising, the compressed air and oxygen in transmitted into the furnace from the air entrance at the bottom, with their pressure separately being 0.05-1.5Mpa. Its advantages are: in the course of temperature rising, the compressed air and oxygen in transmitted into the furnace from the air entrance at the bottom, which has promoted volatilization of material in furnace, accelerating the melt material flowing, so that decreases the air hole rate of the fire-resistant material and increases its purity, prolongs its service life, meanwhile, it also reduces environmental pollution caused by waste material and saves the raw material.

Description

technical field [0001] The invention relates to a production method of an electric melting product, in particular to a furnace bottom oxygen blowing method for melting and casting a refractory material. Background technique [0002] Fused refractory materials such as fused zirconia corundum bricks, fused spinel bricks and their refractory materials, fused chromium corundum bricks and their refractory materials, white corundum, and fused refractory materials mainly made of pure alumina are metallurgical, Ceramics, glass, building materials and other products are one of the indispensable materials for kilns. Its quality directly affects the service life and production efficiency of the above-mentioned kilns. At present, the traditional production method of electric melting refractories is to put the raw materials into the electric melting furnace and raise the temperature to 1780-2300°C for melting, chemical reaction and removal of impurities. The shortcomings of the fused re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/657
Inventor 侯松发
Owner 侯松发
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