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Production process of unfired alumina-magnesia carbon brick for electric furnace steel ladle

An aluminum-magnesium-carbon brick and production process technology, applied in the field of refractory materials, can solve the problems of reduced service life of ladles, affecting the smooth progress of continuous casting, and harsh conditions of use of ladles, so as to reduce usage, maintain volume stability, and reduce production costs. low effect

Pending Publication Date: 2022-05-13
YANSHI ZHONGYUE REFRACTORY MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the needs of continuous casting and continuous casting and smelting of clean steel, the capacity of ladle is continuously expanding, the variety of molten steel is increasing, the temperature of molten steel is increased, the residence time is prolonged, and the application of ladle refining technology makes the use of ladle more stringent. The use of ladle The service life is greatly reduced, which affects the smooth progress of continuous casting

Method used

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  • Production process of unfired alumina-magnesia carbon brick for electric furnace steel ladle
  • Production process of unfired alumina-magnesia carbon brick for electric furnace steel ladle

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Embodiment 1

[0026] Aluminum-magnesium-carbon recycled material 20%, fused corundum 51.2%, fused magnesia-aluminum spinel 10%, fused magnesia 7%, flake graphite 7%, activated alumina micropowder 1%, metal aluminum powder 1%, phenolic Resin 2.8%;

[0027] The recycled alumina-magnesia-carbon bricks are sorted, crushed, magnetically separated to remove iron and cleaned, hydrated and fake particles are processed, and finally made into feed particles;

[0028] Add aluminum-magnesium-carbon brick particles, corundum, fused magnesia, aluminum-magnesium spinel, aluminum powder, flake graphite and phenolic resin into the sand mixer according to the weight ratio for mixing;

[0029] PLC electric program-controlled screw press is used to press and shape the kneaded material, and then send it to a drying furnace at a temperature of 180-220°C for 10-12 hours to obtain finished alumina-magnesia-carbon bricks.

[0030] After testing, the physical and chemical indicators of the finished unfired alumina-...

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Abstract

The invention relates to a production process of an unfired alumina-magnesia-carbon brick for an electric furnace steel ladle. The unfired alumina-magnesia-carbon brick for the electric furnace steel ladle comprises the following components: 20-40% of an alumina-magnesia-carbon reclaimed material, 30-60% of corundum, 3-10% of magnesium aluminate spinel, 7-14% of magnesia, 4-12% of crystalline flake graphite, 1-5% of activated alumina micro powder, 1-3% of metal aluminum powder and 2.3-2.8% of phenolic resin. The sum of all the components is 100%; the refractory material has the advantages of slag corrosion resistance, stripping resistance, corrosion balancing, good thermal shock resistance, long service life, no shrinkage, safety in use, less steel and slag adhesion, no pollution to molten steel, easiness in unpacking, convenience in customer construction and the like, and is a high-quality refractory material for ladle linings. By using the steel mill recycled reworked material, the resource consumption is reduced, and the production cost is reduced; high-temperature firing is not needed, and environmental pollution is reduced.

Description

technical field [0001] The invention relates to the field of refractory materials, in particular to a production process of unfired alumina-magnesia-carbon bricks for electric furnace ladles. Background technique [0002] Ladle is an indispensable important equipment in steelmaking production. It not only affects the quality of molten steel, but also directly affects the normal production of continuous casting. Due to the needs of continuous casting and continuous casting and smelting of clean steel, the ladle capacity continues to expand, the variety of molten steel is increasing, the temperature of molten steel is increased, the residence time is prolonged, and the application of ladle refining technology makes the use of ladle more stringent. The use of ladle The service life is greatly reduced, which affects the smooth progress of continuous casting. In order to increase the service life of ladles and meet the needs of continuous casting production and steel industry fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/10
CPCC04B35/66C04B35/10C04B2235/3222C04B2235/3206C04B2235/425C04B2235/402C04B2235/96C04B2235/9669C04B2235/9607C04B2235/9676
Inventor 张龙龙程晓巍白中栓王月娜
Owner YANSHI ZHONGYUE REFRACTORY MATERIALS
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