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A kind of quick-drying self-flowing castable for permanent layer of ladle

A technology of permanent layer and ladle, applied in the field of refractory materials, can solve the problems of easy leakage accident, high labor intensity in masonry, large brick consumption, etc., and achieve obvious dispersion and water reduction, construction and molding performance and Good performance and the effect of improving fluidity

Active Publication Date: 2020-09-29
YANSHI ZHONGYUE REFRACTORY MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the past, refractory bricks were mainly used for the permanent layer of molten iron ladle at home and abroad, but the use of refractory bricks as the permanent layer of molten iron ladle exists: (1) The consumption of bricks is large, which will cause pollution and damage the environment; (2) The labor intensity of masonry is high; ( 3) Leakage accidents are prone to occur; (4) The disadvantage of high energy consumption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A quick-drying self-flowing castable for a permanent layer of a ladle, in terms of mass percentage, prepared from the following raw materials: pyrophyllite and fused mullite with a particle size of 1-9mm Stone composite material 66%, pyrophyllite and fused mullite composite material with a particle size of 0-1mm 17%, silicon nitride with a particle size ≤ 1mm 5%, water reducing agent 1%, explosion-proof agent 1%, binder 2% , particle size ≤ 60μm silica powder 2%, particle size ≤ 60μm activated alumina powder 3% and particle size ≤ 50μm silicon powder 3%.

[0026] Wherein, the mass ratio of pyrophyllite and fused mullite in the pyrophyllite and fused mullite composite material is 1:1; the water reducer is a mixture of polycarboxylate water reducer and sodium tripolyphosphate, The mass ratio of polycarboxylate water reducer and sodium tripolyphosphate in the water reducer is 1:1; the explosion-proof agent is a mixture of polystyrene fiber and basic aluminum lactate, and t...

Embodiment 2

[0028] A quick-drying self-flowing castable for a permanent layer of a ladle, in terms of mass percentage, prepared from the following raw materials: pyrophyllite and fused mullite with a particle size of 1-9mm Stone composite material 75%, pyrophyllite and fused mullite composite material with a particle size of 0-1mm 14%, silicon nitride with a particle size ≤ 1mm 2%, water reducing agent 1.2%, explosion-proof agent 0.8%, binder 3% 1% silica powder with a particle size of ≤60 μm, 1% of activated alumina powder with a particle size of ≤60 μm and 2% of silicon dioxide powder with a particle size of ≤50 μm.

[0029] Wherein, the mass ratio of pyrophyllite and fused mullite in the pyrophyllite and fused mullite composite material is 1:1; the water reducer is a mixture of polycarboxylate water reducer and sodium tripolyphosphate, The mass ratio of polycarboxylate water reducer and sodium tripolyphosphate in the water reducer is 1:1; the explosion-proof agent is a mixture of polys...

Embodiment 3

[0031] A quick-drying self-flowing castable for a permanent layer of a ladle, in terms of mass percentage, prepared from the following raw materials: pyrophyllite and fused mullite with a particle size of 1-9mm Stone composite material 60%, pyrophyllite and fused mullite composite material with a particle size of 0-1mm 17%, silicon nitride with a particle size ≤ 1mm 8%, water reducing agent 0.5%, anti-explosion agent 1.5%, binder 1% , particle size ≤ 60 μm silica powder 3%, particle size ≤ 60 μm activated alumina powder 4% and particle size ≤ 50 μm silica powder 5%.

[0032]Wherein, the mass ratio of pyrophyllite and fused mullite in the pyrophyllite and fused mullite composite material is 1:1; the water reducer is a mixture of polycarboxylate water reducer and sodium tripolyphosphate, The mass ratio of polycarboxylate water reducer and sodium tripolyphosphate in the water reducer is 1:1; the explosion-proof agent is a mixture of polystyrene fiber and basic aluminum lactate, a...

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Abstract

The invention discloses a quick-dry self-flow casting material for a ladle permanent layer. The quick-dry self-flow casting material is prepared from the following raw materials in percentage by mass:56-75% of a pyrophyllite and fused mullite composite material of which the particle size is 1-9mm, 14-22% of a pyrophyllite and fused mullite composite material of which the particle size is 0-1mm, 2-8% of silicon nitride of which the particle size is less than or equal to 1mm, 0.5-1.5% of a water reduction agent, 0.8-1.5% of an anti-explosion agent, 1-3% of a combination agent, 1-3% of silicon dioxide micro powder of which the particle size is less than or equal to 60mu m, 1-4% of an active aluminum oxide micro powder of which the particle size is less than or equal to 60mu m, and 2-5% of asilica powder of which the particle size is less than or equal to 50mu m. By adopting the quick-dry self-flow casting material, the ladle permanent layer is good in thermal insulation, good in thermalshock resistance, good in peeling resistance and easy to construct, has the characteristics of excellent self flowing, spreading, filling and the like, can be rapidly baked without cracking, achievesthe purposes of self flowing and quick drying, in addition is free of iron slag adhesion, and is long in service life.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a quick-drying self-flowing castable for a permanent layer of a molten iron ladle. Background technique [0002] The molten iron ladle is an open equipment for holding and transporting molten iron, and is a container for desulfurization pretreatment of molten iron. The refractory lining of the molten iron ladle will be in contact with high-temperature molten iron and slag for a long time, and will be eroded by stream flow and slag. The erosion of the lining refractory not only reduces the service life of the molten iron ladle, but also increases the content of other impurities in the molten iron. Therefore, it is very important for steelmaking plants to choose suitable iron ladle lining refractory materials to improve iron quality, stabilize operation, reduce accidents and improve production efficiency. [0003] Ladle lining refractory materials are gene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/18B22D41/02
CPCB22D41/02C04B35/18C04B35/66C04B2235/3217C04B2235/3418C04B2235/3873C04B2235/428C04B2235/447C04B2235/449C04B2235/5212
Inventor 赵国栋赵亚辉
Owner YANSHI ZHONGYUE REFRACTORY MATERIALS
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