Fettling material for converter as well as preparation and using methods thereof

Abstract

The invention provides a fettling material for a converter as well as preparation and using methods thereof. The fettling material is prepared from the following raw materials in parts by weight: 60 to 95 parts of magnesia, 10 to 20 parts of a binding agent, 2 to 5 parts of additives and 6 to 10 parts of wetting agents, wherein the binding agent is a mixture of asphalt and silica fume. Compared with the prior art, the fettling material for the converter has the beneficial effects that the fettling material for the converter as well as the preparation and using methods thereof disclosed by theinvention have good self-flow property, thermal-state strength, erosion resistance and thermal shock property; the hardening time of the fettling material is short, the maintenance time of furnace shutdown of the converter can be effectively reduced, the operation efficiency is improved, and the binding of the fettling material and a working lining of the converter is good so as to prevent stripping of the fettling material in a using process, and environmental pollution is reduced. The fettling material for the converter as well as the preparation and using methods of the fettling material disclosed by the invention have significant meanings on energy conservation and consumption reduction, environmental protection and increment of economic benefits.

Description

technical field [0001] The invention relates to the field of refractory materials, in particular to a repair charge for a converter and a preparation and use method thereof. Background technique [0002] In order to improve the service life of the converter, the maintenance of the furnace lining during the furnace operation is one of the important contents of the furnace age management of the steelmaking plant, especially the maintenance of the front and back. At present, the repair material used for the maintenance of the furnace lining is mainly magnesia. Binders, asphalt, etc., are used as binders. A large amount of black smoke is generated on site during the addition of the furnace repair materials. The labor intensity of the workers is high, and it pollutes the environment and endangers human health. At the same time, the furnace repair materials have a long sintering time and seriously affect the production rhythm of the steel factory. Therefore, it is urgently needed ...

AI Technical Summary

Problems solved by technology

[0002] In order to improve the service life of the converter, the maintenance of the furnace lining during the furnace operation is one of the important contents of the furnace age management of the steelmaking plant, especially the maintenance of the front and rear. At present, the repair material used for the maintenance of the furnace lining is mainly magnesia. Binders, asphalt, etc., are used as binders. A large amount

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