Fireproof spraying coating for steel ladle working lining and preparation method of fireproof spraying coating

A technology of working lining and ladle, which is applied in the field of refractory materials, can solve problems such as not found, and achieve the effects of increasing service life, simple construction, and improving erosion resistance

Inactive Publication Date: 2015-07-22
HUANGHE S & T COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no documents and published invention patents about the preparation method of refractory spray coatings for ladle working linings that are exactly the same as this technology.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: A fire-resistant spray coating for the working lining of a ladle, in parts by weight; 50 parts of sintered bauxite clinker, 10 parts of fused magnesia, 8 parts of fused aluminum-magnesium spinel, fused white corundum 8 parts, 5 parts of activated alumina micropowder, 3 parts of andalusite, 3 parts of silica micropowder, 2 parts of sintering agent, 0.1 part of explosion-proof fiber, and 0.15 part of composite water reducer.

[0027] A kind of refractory spray paint for ladle working liner, its preparation method is as follows: first according to above-mentioned formula batching, add sintered bauxite clinker, fused magnesia and explosion-proof fiber together in the mixer and stir and mix, time is 2 minutes, Then add fused aluminum-magnesium spinel, activated alumina micro-powder, fused white corundum, andalusite, silica micro-powder, sintering agent, and composite water reducer in order to stir and mix for 3 to 4 minutes to obtain a spray coating Product: We...

Embodiment 2

[0028] Embodiment 2: A fire-resistant spray coating for the working lining of a ladle, in parts by weight; 30 parts of sintered bauxite clinker, 15 parts of fused magnesia, 12 parts of fused aluminum-magnesium spinel, fused white corundum 10 parts, 6 parts of activated alumina micropowder, 5 parts of andalusite, 4 parts of silica micropowder, 4 parts of sintering agent, 0.15 part of explosion-proof fiber, and 0.2 part of composite water reducer.

[0029] A kind of refractory spray paint for ladle working liner, its preparation method is as follows: first according to above-mentioned formula batching, add sintered bauxite clinker, fused magnesia and explosion-proof fiber together in mixer and stir and mix, time is 2 minutes, Then add fused aluminum-magnesium spinel, activated alumina micro-powder, fused white corundum, andalusite, silica micro-powder, sintering agent, and composite water reducer in order to stir and mix for 3 to 4 minutes to obtain a spray coating Product: Weig...

Embodiment 3

[0030] Embodiment 3: A fire-resistant spray coating for the working lining of a ladle, in parts by weight; 35 parts of sintered bauxite clinker, 20 parts of fused magnesia, 10 parts of fused aluminum-magnesium spinel, fused white corundum 7 parts, 8 parts of activated alumina micropowder, 4 parts of andalusite, 5 parts of silica micropowder, 5 parts of sintering agent, 0.2 part of explosion-proof fiber, and 0.25 part of composite water reducer.

[0031] A kind of refractory spray paint for ladle working liner, its preparation method is as follows: first according to above-mentioned formula batching, add sintered bauxite clinker, fused magnesia and explosion-proof fiber together in mixer and stir and mix, time is 2 minutes, Then add fused aluminum-magnesium spinel, activated alumina micro-powder, fused white corundum, andalusite, silica micro-powder, sintering agent, and composite water reducer in order to stir and mix for 3 to 4 minutes to obtain a spray coating Product: Weigh...

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Abstract

The invention relates to a fireproof spraying coating for a steel ladle working lining. The fireproof spraying coating is prepared from the following raw materials in parts by weight: 20-50 parts of sintered bauxite clinker, 10-20 parts of fused magnesite, 8-20 parts of fused magnesia-alumina spinel, 5-12 parts of fused white corundum, 5-10 parts of active alumina micropowder, 3-10 parts of andalusite, 3-7 parts of silicon dioxide micropowder, 2-5 parts of a sintering agent, 0.1-0.2 part of externally added explosion-proof fibre, and 0.1-0.3 part of an externally added compound water-reducing agent. The fireproof spraying coating disclosed by the invention is simple in preparation method and simple and convenient to construct; rapid construction maintenance and rapid use of the steel ladle working lining can be realized; because of being compounded by adopting a carbon-free material, the fireproof spraying coating is environment friendly and free from pollution; therefore, molten steel can be purified effectively; the characteristics of high-temperature molten steel to the steel ladle working lining, such as washing resistance, slag corrosion resistance, thermal shock resistance and product comprehensive benefits, can be sufficiently improved; and the service life of the steel ladle working lining can be increased and prolonged effectively.

Description

technical field [0001] The invention belongs to the field of refractory materials, and relates to a refractory material for a working lining layer in contact with high-temperature molten steel, in particular to a refractory spray coating for a ladle working lining layer and a preparation method thereof. Background technique [0002] At present, refractory materials for ladle working lining in steelmaking plants of iron and steel companies generally use refractory shaped products such as magnesia carbon bricks and aluminum magnesia carbon refractory bricks. Due to the disadvantages of low compressive strength, high porosity and poor erosion resistance of refractory bricks , and the construction labor intensity is high, it is difficult to control the gap between bricks and bricks during masonry, it is inconvenient to maintain, and there are safety hazards in the use process. With the rapid development of iron and steel smelting technology, higher requirements are put forward f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 李慧张保丰蒋爱云刘德波秦国帅
Owner HUANGHE S & T COLLEGE
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