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A kind of refractory material for the furnace bottom of non-ferrous smelting melting furnace and its preparation method

A technology of refractory materials and furnaces, which is applied in the field of refractory materials, can solve the problems of frequent damage and aggravated damage, and achieve the effects of prolonging service life, improving high temperature performance, and good erosion resistance

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

which uses CuSO 4 Solution impregnation, want to reach the use temperature to form CuO–Cu 2 The O redox system melts and self-closes the pores, making the physical and chemical properties of the refractory material more uniform and the penetration resistance stronger, but the introduced CuO–Cu 2 O redox system will interact with Fe 2 o 3 – The 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 kind of refractory material for the furnace bottom of non-ferrous smelting melting furnace and its preparation method
  • A kind of refractory material for the furnace bottom of non-ferrous smelting melting furnace and its preparation method

Examples

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Effect test

Embodiment 1

[0029] 60 parts of aluminum-chromium eutectic, 20 parts of aluminum-magnesium spinel and 5 parts of iron-aluminum spinel are composed according to the particle size. According to the principle of first coarse and then fine, first dry blend in a wet mill, and wait for the particles to be mixed with fine powder After uniformity, add 5 parts of a mixture of clay, phosphoric acid solution, aluminum dihydrogen phosphate solution and water with a mass ratio of 3:3:3:1 as a binder, press with a pressure of 630T, and shape it into a brick. In the drier, dry at 250°C for 24 hours, and then place the dried bricks in a high-temperature tunnel kiln for firing at a firing temperature of 1500°C, and the holding time at the firing temperature is 6 hours.

Embodiment 2

[0031] 63 parts of aluminum-chromium eutectic, 15 parts of aluminum-magnesium spinel and 15 parts of iron-aluminum spinel are composed according to the particle size. According to the principle of first coarse and then fine, dry blend in a wet mill first, and mix the particles with fine powder After uniformity, add 5.5 parts of a mixture of clay, phosphoric acid solution, aluminum dihydrogen phosphate solution and water in a mass ratio of 3:3:3:1 as a binder, press with a pressure of 800T, and shape it into a brick. In the drier, dry at 200°C for 48 hours, then place the dried bricks in a high-temperature tunnel kiln for firing at a firing temperature of 1300°C, and hold for 6 hours at the firing temperature.

Embodiment 3

[0033] 70 parts of aluminum-chromium eutectic, 25 parts of aluminum-magnesium spinel and 10 parts of iron-aluminum spinel are composed according to the particle size. According to the principle of first coarse and then fine, dry blend in a wet mill first, and mix the particles with fine powder After uniformity, add 6 parts of a mixture of clay, phosphoric acid solution, aluminum dihydrogen phosphate solution and water with a mass ratio of 3:3:3:1 as a binder, press with a pressure of 1000T, and shape it into a brick. In the drier, dry at 230°C for 36 hours, then place the dried bricks in a high-temperature tunnel kiln for firing at 1400°C, and hold for 8 hours at the firing temperature.

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Abstract

A refractory material for the bottom of a non-ferrous smelting melting furnace, suitable for the bottom position of a non-ferrous smelting melting furnace, the composition of the refractory material is: aluminum-chromium eutectic, aluminum-magnesium spinel, iron-aluminum spinel and combined agent. The technical proposal uses aluminum-chromium eutectic, aluminum-magnesium spinel and iron-aluminum spinel as raw materials. The content of MgO is reduced, so that the dissolution and reaction of MgO in the refractory material is greatly reduced, and the structure of the refractory material is guaranteed. Chromium-aluminum materials have excellent high-temperature performance and strong erosion resistance. Magnesium-aluminum refractory materials have better erosion resistance. The addition of iron-aluminum spinel reduces the porosity of the refractory material and enhances the penetration resistance. This technical solution uses clay, phosphoric acid solution, aluminum dihydrogen phosphate solution and water as binders, so that various raw materials and binders can penetrate each other, and the refractory material is denser, which helps to improve the high temperature performance of the refractory material.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a refractory material for the bottom 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 recovery rate nee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
CPCC04B35/66
Inventor 张利新王宇涛王继宝廖绍虎李婉婉张瑜
Owner 中钢洛耐科技服份有限公司