Pit patching material for converter

A technology for repairing furnace materials and converters, which is applied in the field of refractory materials and can solve problems such as material turning, splashing, and affecting the normal production of converters

Inactive Publication Date: 2018-11-30
海城利尔麦格西塔材料有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0002] With the substantial increase in the smelting intensity and production pace of the converter, the quality requirements for repairing materials for converter maintenance are becoming more and more stringent. At present, the repairing materials used for furnace lining maintenance are mainly magnesia as the main material and asphalt as the binder. When

Method used

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  • Pit patching material for converter
  • Pit patching material for converter

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Embodiment

[0020]

[0021]

[0022] The invention can improve the hydration resistance and erosion resistance of the product by using the composite magnesium dolomite material. The use of modified asphalt binders can overcome many shortcomings of using a single medium temperature asphalt binder, and comprehensively improve the quality of the binder. The present invention proposes a new way to make up the furnace material for the converter, which is of great significance for energy saving, consumption reduction, environmental protection, and economic benefit increase. After being used in a steel plant, the average life span reaches 30 heats. The present invention proposes a new way for refilling materials for converters, which is of great significance for energy saving, consumption reduction, environmental protection, and economic benefit.

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Abstract

The invention relates to a pit patching material for a converter, wherein the pit patching material comprises the following raw materials by weight: 60-85 parts of the mixed powder of dolomite and sintered magnesia, 10-20 parts of modified asphalt, 2-5 parts of an additive, and 6-10 parts of a wetting agent, and a ratio of the dolomite to the sintered magnesia in the mixed powder is 1:(1-2). According to the present invention, the pit patching material has advantages of good self-flowing property, hot strength, corrosion resistance, thermal shock resistance and short hardening time so as to reduce the blowing-out maintenance time of the converter and improve the working efficiency; and the pit patching material and the converter working line are well adhered so as to prevent the pit patching material from peeling off during the use.

Description

Technical field [0001] The invention belongs to the field of refractory materials, and in particular relates to a repair charge for a converter. Background technique [0002] With the substantial improvement of converter smelting intensity and production rhythm, the quality requirements for the repairing materials for converter maintenance are becoming more and more stringent. At present, the repairing materials used for furnace lining maintenance mainly use magnesia as the main material and asphalt as the binder. When repairing the furnace, add the repairing material into the hopper and put it into the furnace. The repairing material often experiences abnormal damages such as collapse, overturning, failure to make up or rapid erosion, and sometimes cause safety accidents such as splashing, which seriously affects the normal operation of the converter. produce. Therefore, there is an urgent need for a new type of converter material to improve the maintenance status of the conver...

Claims

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Application Information

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IPC IPC(8): C04B35/043
CPCC04B35/043C04B2235/321C04B2235/3826C04B2235/5208
Inventor 范玉龙张义先王新杰董会彬陈东明袁青峰金钊
Owner 海城利尔麦格西塔材料有限公司
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