A high-strength melting furnace for non-ferrous intensified smelting

A furnace and non-ferrous technology, applied in the field of refractory materials, can solve the problems of frequent reaction and intensified damage of refractory materials, and achieve the effects of improving thermal shock stability and erosion resistance, reducing porosity and improving permeability.

Active Publication Date: 2021-03-12
REFRACTORY MATERIAL OF SINOSTEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

which uses CuSO 4 Solution impregnation, want to reach the use temperature to form CuO–Cu 2 O redox system melts for the purpose of self-closing pores, but the introduced CuO–Cu 2 O redox system will interact with Fe 2 The O3–FeO redox system acts on the refractory material together, making the reaction on the refractory material more frequent and the damage aggravated

Method used

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  • A high-strength melting furnace for non-ferrous intensified smelting
  • A high-strength melting furnace for non-ferrous intensified smelting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] 90 parts of fused chromium corundum and 5 parts of chromium oxide are composed according to the particle size. According to the principle of first coarseness and then fineness, first dry blend in a wet mill. After the particles and fine powder are mixed evenly, add 90 parts of fused chromium corundum and 5 parts A mixture of white aleurone powder and water with a mass ratio of 7:3 is pressed at a pressure of 400T to form a brick, and the resulting brick is placed in a dryer and dried for 48 hours at a temperature of 200°C. Refractory material for furnace wall mouth of non-ferrous smelting furnace.

[0056] 67 parts of chromium corundum, 5.5 parts of capacitive chromium oxide, 4 parts of chromium oxide, 20 parts of high chromium ore, 8 parts of brown corundum powder and 6 parts of α-alumina micropowder are composed according to the particle size, according to the principle of first coarse and then fine, first in wet Dry mixing in the mill, after the granules and fine pow...

Embodiment 2

[0063] 92 parts of fused chromium corundum and 6 parts of chromium oxide are composed according to the particle size. According to the principle of first coarseness and then fineness, first dry mix in a wet mill, and after the particles and fine powder are mixed evenly, add 5 parts with a mass ratio of 4:5 The gel binder mixed with α-alumina micropowder and aluminum dihydrogen phosphate solution is pressed at a pressure of 480T to form a brick, and the resulting brick is placed in a dryer and dried for 48 hours at a temperature of 250°C to obtain a colored smelting Refractory materials for furnace wall mouth.

[0064] 60 parts of chromium corundum, 4 parts of capacitive chromium oxide, 3 parts of chromium oxide, 15 parts of high chromium ore, 5 parts of brown corundum powder and 4 parts of α-alumina micropowder are composed according to the particle size. Dry mixing in the mill, after the granules and fine powder are evenly mixed, add a mixture of white aleurone powder blendin...

Embodiment 3

[0071] 94 parts of fused chromium corundum and 7 parts of chromium oxide are composed according to the particle size. According to the principle of first coarseness and then fineness, first dry blend in a wet mill, and after the particles and fine powder are mixed evenly, add 5.5 parts. The mass ratio is 7:3 The mixture of white aleurone blended liquid and water is used as a binder, pressed at a pressure of 500T, and shaped into adobe. The adobe obtained is placed in a dryer and dried at a temperature of 240°C for 48h. A refractory material for the furnace wall opening of a non-ferrous smelting furnace is obtained.

[0072] 65 parts of chrome corundum, 4 parts of capacitive chromium oxide, 5 parts of chromium oxide, 18 parts of high chromium ore, 7 parts of brown corundum powder and 4 parts of α-alumina micropowder are composed according to the particle size, according to the principle of first coarse and then fine, first in wet Dry mixing in the mill, after the granules and f...

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Abstract

A high-strength melting furnace for non-ferrous intensified smelting, including a furnace wall opening, an upper furnace wall, a furnace wall above the liquid line, a liquid line furnace wall, a furnace wall below the liquid line, a secondary working layer, a liquid outlet nozzle, a furnace bottom, and various parts of the furnace They are all made of refractory materials. By analyzing the working conditions of different positions of high-strength melting furnaces for non-ferrous intensified smelting, different refractory material linings are used at corresponding positions to improve the erosion resistance, thermal shock resistance and erosion resistance of the furnace lining at this position. 1. One or more performances in the impermeability greatly prolong the service life of the furnace lining, avoid frequent repairs and replacement of the furnace lining, and save a lot of manpower and financial resources.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a high-strength melting furnace for non-ferrous intensified smelting. Background technique [0002] my country is a big producer of non-ferrous metals. With the rapid development of my country's transportation, energy, construction, electromechanical, communications, automobiles, household appliances, etc., and my country's neighboring countries such as Japan and South Korea with poor resources need to import a large amount of non-ferrous metals, various types Composite materials, alloys, ultra-thin copper plates, pipes and chemical products have a wide range of domestic and foreign markets, and the production capacity continues to expand, resulting in a series of problems such as: aging technology, outdated equipment, high energy consumption, high cost, serious environmental pollution, Problems such as shortage of mine resources and low recovery rate need to be resolv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/105F27D1/00C04B35/66
CPCF27D1/0006C04B35/105C04B35/66C04B2235/77C04B2235/9676C04B2235/9615C04B2235/96C04B2235/9607C04B2235/3222C04B2235/3206C04B2235/447C04B2235/349C04B2235/3272F27M2003/13
Inventor 张利新杨建华李婉婉王宇涛张瑜张小惠
Owner REFRACTORY MATERIAL OF SINOSTEEL CORP
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