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Chemical-bonding aluminum-magnesium repairing material for steel ladle working lining

A technology of chemical bonding and working lining, applied in the field of unshaped refractory materials, can solve the problems of unfavorable rapid turnover of ladle, poor repair and bonding effect, poor slag erosion resistance, etc., to achieve rapid development of bond strength and reduce refractory consumption. , good effect

Inactive Publication Date: 2014-02-26
河南海格尔高温材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used repair materials use ordinary MgO-SiO 2 -H 2 O or cement combination, weak bonding performance, poor smearing performance, poor slag erosion resistance, and poor repair bonding effect in hot state
This kind of material needs necessary maintenance after repairing, and the repairing period is long, which is not conducive to the rapid turnover of ladles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0018] A chemically bonded aluminum-magnesium repair material for ladle working lining, which is composed of dry material and an added binder, and the dry material is composed of the following components in terms of weight percentage: 75-80% high-alumina aggregate, Sintered magnesia fine powder 10~15%, alumina fine powder 1~5% and clay 1~5%, among them, high alumina aggregate and sintered magnesia fine powder are the main components, alumina fine powder is used as sintering aid, sticky The amount of binder added is 5-10% of the dry material weight.

[0019] The high alumina aggregate is Al 2 o 3 Special-grade bauxite clinker or corundum with content ≥80%.

[0020] The corundum is one or more of brown corundum, sub-white corundum, tabular corundum, dense corundum, fused zirconia corundum, and fused white corundum.

[0021] The binder is one or more of aluminum dihydrogen phosphate solution, aluminum sulfate solution or phosphoric acid.

[0022] The mass concentration of the...

Embodiment 1

[0029] A chemically bonded aluminum-magnesium repair material for ladle working lining, which is composed of dry material and an added binder, and the dry material is composed of the following components by weight percentage: Al 2 o 3 80% of super bauxite clinker with content ≥80%, 10% of sintered magnesia fine powder, 5% of alumina micropowder, 5% of clay, and then add 5% of dry material weight and 40% aluminum dihydrogen phosphate solution , mix the above raw materials evenly, then it can be repaired and used.

Embodiment 2

[0031] A chemically bonded aluminum-magnesium repair material for ladle working lining, which is composed of dry material and an added binder, and the dry material is composed of the following components by weight percentage: Al 2 o 3 77% of corundum with content ≥ 80%, 15% of sintered magnesia fine powder, 5% of alumina micropowder, 3% of refractory clay, and then add 8% of dry material weight of aluminum sulfate solution with a mass concentration of 35%. Mix well and it's ready to use as a touch-up.

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PUM

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Abstract

The invention discloses a chemical-bonding aluminum-magnesium repairing material for a steel ladle working lining. The chemical-bonding aluminum-magnesium repairing material is composed of a dry material and an additional binder, wherein the dry material consists of the following components in percent by weight: 75%-80% of high-aluminum aggregate, 10%-15% of sintered magnesite fine powder, 1%-5% of aluminum oxide micro powder and 1%-5% of clay, wherein the high-aluminum aggregate and the sintered magnesite fine powder are essential components; the aluminum oxide micro powder is a clinkering aid; addition amount of the binder accounts for 5%-10% of the weight of the dry material. The prepared chemical-bonding aluminum-magnesium repairing material for the steel ladle working lining has the advantages of being good in adhesion, quick in adhesive strength development, small in temperature influence, moderate in hardening speed, free from special-purpose maintenance, not easy to sinter under a high temperature, and the like, is especially suitable for repairing under a thermal state, and can effectively resist scouring and erosion of molten steel and steel slag to achieve an effect of protecting the working lining. Moreover, service life of the steel ladle is prolonged, consumption of a ton-steel refractory material is lowered, and safety of the steel ladle can be well guaranteed.

Description

technical field [0001] The invention belongs to the technical field of unshaped refractory materials, in particular to a chemically bonded aluminum-magnesium repairing material for working lining of ladles. Background technique [0002] Refractory materials for working lining of ladle include MgO-C, Al 2 o 3 -MgO-C shaped refractory products and Al 2 o 3 - MgO, corundum-spinel ladle castables. In use, the service life of the working lining of the ladle is often limited by the steel facing surface, the slag pouring surface, the area adjacent to the air-permeable brick area, and the junction between the cladding wall castable and the slag line MgO-C brick, etc. Strengthen the repair of these parts It can reduce the steel consumption per ton of refractory materials and improve the safety of ladle operation. [0003] At present, the commonly used repair materials use ordinary MgO-SiO 2 -H 2 O or cement combination, weak bonding performance, poor smearing performance, poor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 邵淑英李纪伟朱晓鹏王辉郜桥刚
Owner 河南海格尔高温材料有限公司
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