A kind of refractory material for upper furnace wall of non-ferrous smelting melting furnace and preparation method thereof

A refractory material and furnace technology, applied in the field of refractory materials, can solve the problems of reduced thermal shock stability of refractory materials, defects in refractory material performance, and enlarged intergranular cracks, so as to improve permeability resistance, improve thermal shock stability and Erosion resistance, porosity reduction effect

Active Publication Date: 2021-08-27
中钢洛耐科技服份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But ZrO 2 The content is not easy to control. When the content is too high, the intergranular cracks will become larger. When it reaches a certain level, the thermal shock stability of the refractory material will decrease, causing performance defects in the refractory material.

Method used

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  • A kind of refractory material for upper furnace wall of non-ferrous smelting melting furnace and preparation method thereof
  • A kind of refractory material for upper furnace wall of non-ferrous smelting melting furnace and preparation method thereof
  • A kind of refractory material for upper furnace wall of non-ferrous smelting melting furnace and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]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 5 parts of the mixture with a mass ratio of 7:3 as a binder, press with a pressure of 630T, and shape it into adobe, put the obtained adobe in a dryer, Dry at 150°C for 24 hours, then place the dried bricks in a high-temperature tunnel kiln for firing at 1350°C, and hold for 8 hours at the firing temperature.

Embodiment 2

[0034] 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 fine powder are evenly mixed, add 6 parts of the mixture of white aleurone blending solution and water with a mass ratio of 7:3 as a binder, press with a pressure of 600T, and shape it into adobe. The adobes are placed in a dryer and dried at a temperature of 140°C for 24 hours, and then the dried adobes are fired in a high-temperature tunnel kiln at a firing temperature of 1350°C, and the holding time is 8 hours under the firing temperature condition. Hour.

Embodiment 3

[0036] 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, and according to the principle of first coarse and then fine, firstly in wet Dry mixing in the mill, after the granules and fine powder are evenly mixed, add 5.5 parts of the mixture of white aleurone powder blending solution and water with a mass ratio of 7:3 as a binder, press with a pressure of 400T, and shape it into adobe. The adobe is placed in a dryer and dried for 24 hours at a temperature of 100°C, and then the dried adobe is fired in a high-temperature tunnel kiln at a firing temperature of 1300°C, and the holding time under the firing temperature condition is 8 Hour.

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Abstract

A refractory material for the upper furnace wall of a non-ferrous smelting melting furnace, which is suitable for the upper furnace wall of a non-ferrous smelting melting furnace. powder, α-alumina micropowder and binder. This technical solution uses chromium corundum, fused chromium oxide, chromium oxide, high chromium ore, brown corundum powder, and α-alumina micropowder as raw materials, which reduces the content of MgO, so that the dissolution and subsequent decomposition of MgO in the refractory material The reaction is greatly reduced, the related thermal reaction is reduced, and the refractory structure is prevented from being damaged by frequent reactions.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a refractory material for the upper furnace wall of a non-ferrous smelting melting furnace. 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, resource-poor countries 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 recov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/105
CPCC04B35/105C04B2235/77C04B2235/96C04B2235/9607
Inventor 张利新邓俊杰廖绍虎薄钧张文天刘萍
Owner 中钢洛耐科技服份有限公司
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