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High-temperature walking beam furnace beam and column insulation lining slag-adhesion-preventing coating

A walking heating furnace and anti-sticking slag technology, which is applied in the field of refractory materials for heating furnaces, to achieve the effects of increasing production, preventing oxidation, and curbing sticking

Inactive Publication Date: 2013-11-20
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the prevention of slag hanging on furnace beams and columns during the heating process of high-temperature oriented silicon steel, there are no relevant technical reports at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] High-temperature walking heating furnace beam and column heat insulation lining anti-sticking slag smear, its raw materials include by weight percentage:

[0026] 55% high alumina bauxite clinker, 8.71% magnesium aluminum spinel, 10% calcined anthracite, 2% flake graphite, 6% silicon carbide, 4% α-Al 2 o 3 Micropowder, 4% silica micropowder, 7% pure calcium aluminate cement, 0.5% metal silica powder, 2.5% water-soluble epoxy resin and water-soluble curing agent, 0.05% explosion-proof fiber, 0.1% hexametaphosphoric acid Sodium, 0.1% FS20 refractory castable superplasticizer and 0.04% water-soluble WD-10 silane coupling agent.

[0027] Wherein, Al in the high alumina bauxite clinker 2 o 3 content ≥ 85%, which is composed of two particle gradations with a particle size greater than 1mm and less than or equal to 3mm and 0.1~1mm, and the weight percentages of the two kinds of particles are 50% and 50% respectively, and the Al of the magnesium aluminum spinel 2 o 3 The c...

Embodiment 2

[0030] High-temperature walking heating furnace beam and column heat insulation lining anti-sticking slag smear, its raw materials include by weight percentage:

[0031] 55% high alumina bauxite clinker, 7.13% magnesium aluminum spinel, 8% calcined anthracite, 5% flake graphite, 3% silicon carbide, 6% α-Al 2 o 3 Micropowder, 6% silica micropowder, 5% pure calcium aluminate cement, 1% metal silica powder, 3.5% water-soluble epoxy resin and water-soluble curing agent, 0.1% explosion-proof fiber, 0.15% hexametaphosphoric acid Sodium, 0.05% FS20 refractory castable superplasticizer and 0.07% water-soluble WD-10 silane coupling agent.

[0032] Wherein, Al in the high alumina bauxite clinker 2 o 3 content ≥ 85%, which is composed of two particle gradations with a particle size greater than 1mm and less than or equal to 3mm and 0.1~1mm, and the weight percentages of the two kinds of particles are 80% and 20% respectively, and the Al of the magnesium aluminum spinel 2 o 3 The con...

Embodiment 3

[0035] High-temperature walking heating furnace beam and column heat insulation lining anti-sticking slag smear, its raw materials include by weight percentage:

[0036] 60% high alumina bauxite clinker, 5.12% magnesium aluminum spinel, 5% calcined anthracite, 4% flake graphite, 5% silicon carbide, 5% α-Al 2 o 3 Micropowder, 5% silica micropowder, 6% pure calcium aluminate cement, 1.5% metal silica powder, 3% water-soluble epoxy resin and water-soluble curing agent, 0.1% explosion-proof fiber, 0.15% hexametaphosphoric acid Sodium, 0.08% FS20 refractory castable superplasticizer and 0.05% water-soluble WD-10 silane coupling agent.

[0037] Wherein, Al in the high alumina bauxite clinker 2 o 3 content ≥ 85%, which is composed of two particle gradations with a particle size greater than 1mm and less than or equal to 3mm and 0.1~1mm, and the weight percentages of the two kinds of particles are 25% and 75% respectively, and the Al of the magnesium aluminum spinel 2 o 3 The con...

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Abstract

The invention discloses a high-temperature walking beam furnace beam and column insulation lining slag-adhesion-preventing coating. The coating comprises the raw materials of, by weight: 55-60% of the bauxite clinker, 5-10% of magnesium aluminate spinel, 5-10% of calcined anthracite, 2-5% of flake graphite, 3-6% of silicon carbide, 4-6 % of alpha-Al2O3 powder, 4-6% silica micro-powder, 5-7% of calcium aluminate cement, 0.5-1.5% of metal silicon powder, 2.5-3.5% of water-soluble epoxy resin and water-soluble curing agent, 0.05-0.10% of explosion-proof fiber, 0.1-0.15% of sodium hexametaphosphate, 0.05-0.10% of an organic reducing agent, and 0. 04-0.07% of an organic silane coupling agent. With the slag-adhesion-preventing coating, the comprehensive targets are achieved, that service lives of the furnace beam and the column insulation lining are prolonged, furnace energy consumption and insulation lining surface slag adhesion amount are reduced, furnace maintenance cost is reduced, and high-temperature-oriented silicon steel production efficiency is improved.

Description

technical field [0001] The invention belongs to the field of refractory materials for heating furnaces, in particular to a high-temperature walking heating furnace beam and column heat insulation lining anti-sticking slag smearing material. technical background [0002] High-temperature oriented silicon steel has high magnetic induction and low iron loss performance and has been unanimously recognized by users. However, in the production process of high-temperature oriented silicon steel (HiB steel), the heating temperature of the billet in the walking heating furnace is high and the time in the furnace is long, resulting in the billet There is a large amount of oxidation and burning loss in the furnace, and the melt formed by the oxidation of iron and silicon on the surface of the billet flows continuously to the surface of the supporting furnace beam and column and the bottom of the furnace. The contact and penetration of refractory materials form adhesion. Through the phy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 欧阳德刚罗安智朱善合
Owner 武汉钢铁有限公司
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