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Preparation method of flame retardant coating casting material for guide rod

A castable and refractory layer technology is applied in the field of slag blocking plugs, which can solve the problems of long demoulding and curing time, high production cost, shortening the demoulding and curing time of production guide rods, etc., so as to shorten the demoulding curing time and reduce the production cost. Effect

Inactive Publication Date: 2014-08-13
高金菊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to overcome the deficiencies in the prior art that the refractory castable of the guide rod for the slag stopper has a long demoulding time and high production cost, and provides a method for preparing the refractory castable of the guide rod. The technical solution of the present invention can greatly reduce the production cost, and can greatly shorten the demoulding maintenance time of the production guide rod

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A refractory layer castable for guide rods in this embodiment has the following components in parts by mass: 52 parts of bauxite, 27 parts of magnesia, 13 parts of waste high alumina bricks, 9 parts of white corundum, and blast furnace gas ash 12 parts, 6 parts of fly ash, 14 parts of bentonite, 11 parts of phenolic resin, 5 parts of silicone resin. Wherein: the waste high-alumina bricks are composed of powders with a particle size of ≤1mm, 3-1mm, 5-3mm, and 8-5mm, wherein powders with a particle size of ≤1mm account for 28% of the total mass of waste high-alumina bricks, The powder with a particle size of 3-1mm accounts for 45% of the total mass of waste high-alumina bricks, the powder with a particle size of 5-3mm accounts for 22% of the total mass of waste high-alumina bricks, and the powder with a particle size of 8-5mm accounts for 45% of the total mass of waste high-alumina bricks. 5% of the total mass of the brick; the average particle size of the bauxite, magnes...

Embodiment 2

[0031] A refractory layer castable for guide rods in this embodiment has the following components in parts by mass: 50 parts of bauxite, 25 parts of magnesia, 12 parts of waste high alumina bricks, 8 parts of white corundum, and blast furnace gas ash 11 parts, 4 parts of fly ash, 12 parts of bentonite, 9 parts of phenolic resin and 4 parts of silicone resin. Wherein: the waste high-alumina bricks are composed of powders with a particle size of ≤1mm, 3-1mm, 5-3mm, and 8-5mm, wherein powders with a particle size of ≤1mm account for 28% of the total mass of waste high-alumina bricks, The powder with a particle size of 3-1mm accounts for 45% of the total mass of waste high-alumina bricks, the powder with a particle size of 5-3mm accounts for 22% of the total mass of waste high-alumina bricks, and the powder with a particle size of 8-5mm accounts for 45% of the total mass of waste high-alumina bricks. 5% of the total mass of the brick; the average particle size of the bauxite, magn...

Embodiment 3

[0039] A refractory layer castable for guide rods in this embodiment has the following components in parts by mass: 54 parts of bauxite, 28 parts of magnesia, 14 parts of waste high alumina bricks, 10 parts of white corundum, blast furnace gas ash 13 parts, 8 parts of fly ash, 15 parts of bentonite, 14 parts of phenolic resin and 6 parts of silicone resin. Wherein: the waste high-alumina bricks are composed of powders with a particle size of ≤1mm, 3-1mm, 5-3mm, and 8-5mm, wherein powders with a particle size of ≤1mm account for 28% of the total mass of waste high-alumina bricks, The powder with a particle size of 3-1mm accounts for 45% of the total mass of waste high-alumina bricks, the powder with a particle size of 5-3mm accounts for 22% of the total mass of waste high-alumina bricks, and the powder with a particle size of 8-5mm accounts for 45% of the total mass of waste high-alumina bricks. 5% of the total mass of the brick; the average particle size of the bauxite, magnes...

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PUM

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Abstract

The invention discloses a method for preparing a refractory layer pouring material for a guide rod, and belongs to the technical field of slag blocking plugs. The steps are: crush the recovered waste high-alumina bricks with crushing equipment; crush bauxite, magnesia, and white corundum with crushing and grinding equipment; weigh 50-54 parts of bauxite, magnesium Add 25-28 parts of sand, 12-14 parts of waste high-alumina bricks, 8-10 parts of white corundum, 11-13 parts of blast furnace gas ash and 4-8 parts of fly ash, and add them to a mixing mixer and stir for 8-10 minutes to pour Material premix; Weigh 12~15 parts of bentonite, 9~14 parts of phenolic resin and 4~6 parts of silicone resin according to the parts by mass, add them to the castable premix in turn, and continue to stir for 12~15 minutes, that is Obtain refractory castables. When the castable for the refractory layer produced by the invention is used to produce guide rods, the demoulding and maintenance time is greatly shortened, and the production cost of the castable for the refractory layer is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of slag blocking plugs for converter slag blocking, more specifically, to a method for preparing refractory castables for guide rods. Background technique [0002] At the end of BOF smelting, all the slag floats on the surface of molten steel. During the tapping process of the BOF, especially after most of the molten steel is discharged, the molten steel will form a strong eddy current at the tapping port, and the slag will inevitably follow the Molten steel flows out. Since slag contains a large amount of harmful components to molten steel, and these harmful components will return or dissolve into molten steel at any time, affecting the purity of molten steel and the quality of the final steel product. At the same time, a large amount of slag will also form different The form consumes the alloy, which reduces the alloy yield in the molten steel refining process. For this reason, iron and steel enterprises...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 高金菊
Owner 高金菊