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Anti-scouring anhydrous stemming

An anhydrous blasting and anti-scouring technology, which is applied in the field of refractory materials, can solve the problems that the anti-scouring performance cannot meet the use requirements, and achieve the effect of improving the anti-scouring performance and the strength of the blasting clay

Inactive Publication Date: 2021-10-01
巩义市芙豪冶金材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Production found that the anti-scouring performance of the existing anhydrous taphole clay can not meet the requirements of use, and high-frequency maintenance of the blast furnace is required. Therefore, an anhydrous taphole clay with high anti-scouring performance suitable for ironmaking blast furnaces is needed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] An anti-scour anhydrous gunpowder, comprising dry material and environmentally friendly resin oil, the dry material includes the following raw materials in parts by weight: 10-20 parts of brown corundum granules, 10-17 parts of white corundum granules, silicon carbide granules 5-10 parts of raw material, 8-15 parts of coke granular material, 5-10 parts of high alumina fine powder, 6-10 parts of 200 mesh silicon carbide powder, 2-5 parts of 325 mesh silicon carbide powder, 3- 8 parts, 2-6 parts of activated alumina powder, 1-5 parts of silicon micropowder, 5-12 parts of Guangxi clay, 1-5 parts of metal silicon, the parts by weight of the described environmental protection resin oil is 8-15 parts, environmental protection resin The oil is a new type of organic environmental protection resin oil. The particle size of the brown corundum pellets is 1-2mm, the particle size of the white corundum pellets is 0.21-1mm, the particle size of the silicon carbide pellets is 0.21-1mm...

Embodiment 2

[0015] An anti-scour anhydrous taphole clay, comprising dry material and environmentally friendly resin oil, the dry material includes the following raw materials in parts by weight: 10 parts of brown corundum particles with a particle size of 1-2mm, and white corundum particles with a particle size of 0.21-1mm 10 parts of raw material, 5 parts of silicon carbide granular material with a particle size of 0.21-1mm, 8 parts of coke granular material with a particle size of 0.21-1mm, 5 parts of 200-mesh high-alumina fine powder, 6 parts of 200-mesh silicon carbide powder, and 325-mesh silicon carbide 2 parts of powder, 3 parts of metal sialon compound, 2 parts of activated alumina powder, 1 part of silicon micropowder, 5 parts of 200 mesh Guangxi clay, 1 part of 325 mesh metal silicon, and 8 parts of the environmental protection resin oil.

Embodiment 3

[0017] An anti-scour anhydrous gunpowder, comprising dry material and environmentally friendly resin oil, the dry material includes the following raw materials in parts by weight: 20 parts of brown corundum granules with a particle size of 1-2mm, and white corundum particles with a particle size of 0.21-1mm 17 parts of raw material, 10 parts of silicon carbide granular material with a particle size of 0.21-1mm, 15 parts of coke granular material with a particle size of 0.21-1mm, 10 parts of 200-mesh high-alumina fine powder, 10 parts of 200-mesh silicon carbide powder, and 325-mesh silicon carbide 5 parts of powder, 8 parts of metal sialon compound, 6 parts of activated alumina powder, 5 parts of silicon micropowder, 12 parts of 200 purpose Guangxi clay, 15 parts of 325 purpose metal silicon, and 15 parts of described environmental protection resin oil.

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Abstract

The invention relates to the technical field of refractory materials, in particular to anti-scouring anhydrous stemming. The stemming comprises dry materials and environment-friendly resin oil, and the dry materials comprise corundum aggregate, silicon carbide particles, coke particles, high-aluminum fine powder, silicon carbide micro powder, activated aluminum oxide powder, metal silicon, a metal sialon compound and clay according to a specific weight ratio. The environment-friendly resin oil is a novel binding agent which is treated by a high-pressure kettle, the harmful gas discharge amount of the novel binding agent meets national requirements, the raw materials are stirred and mixed according to a certain proportion to prepare the anti-scouring sewage-free stemming, and a metal silicon and metal sialon compound is added into the mixture, so on the one hand, the anti-scouring capability of the material is improved by utilizing the self sialon phase; on the other hand, the metal sialon compound is subjected to in-situ reaction with the aluminum oxide micro powder, the silicon carbide micro powder and the like in the raw materials in a high-temperature use environment to generate sialon, so the strength and the anti-scouring performance of the material are effectively improved.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to an anti-scour anhydrous taphole mortar. Background technique [0002] Gun clay is a refractory material used to block the taphole in ironmaking blast furnaces, and its performance is directly related to whether the blast furnace can operate safely. During the operation of the blast furnace, the blast clay plays three major functions: blocking the taphole, stably discharging molten iron and slag, protecting the hearth, and prolonging the life of the refractory brick at the bottom of the blast furnace. With the development of new iron and steel smelting technologies, modern blast furnaces are developing towards large-scale, ultra-large, automated, high-life, high-pressure, high-strength smelting directions, and are strengthened by high-tech technologies such as high wind temperature, high-pressure furnace roof, coal injection, and computer control. At the same time, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/101
CPCC04B35/101C04B2235/3826C04B2235/422C04B2235/402C04B2235/349C04B2235/428C04B2235/3869
Inventor 张翠青薛文东蒲李刚
Owner 巩义市芙豪冶金材料有限公司
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