Furnace repair method for steelmaking converter

Abstract

The invention discloses a converter repair method for a steel making converter. According to the method, firstly, low-carbon porous reducing iron is arranged in a converter repair position; next, theconverter repair position is soaked into liquid-state converter slag and is maintained for 3min; next, the converter repair position is separated from the liquid-state converter slag; the slag sputtering converter protection operation is performed on the converter repair position; the caring on the converter repair is realized by controlling the condition of the primary smelting. The method provided by the invention has the beneficial effects that 1, the conversion repair is performed in the converter liner molten water flushing position, and the life of the converter can be effectively prolonged; 2, the reduction iron sources are wide; the preparation cost is low; the reduction iron is used as the converter repair materials, so that the convertor repair effect is ensured; meanwhile, the converter repair cost is effectively reduced; 3, the slag hanging operation is performed on the converter repair position, so that a high-temperature-resistant layer is formed on the converter liner surface, so that the furnace repair effect can be improved; 4, the furnace repair time is short; the production interruption is effectively avoided; the production efficiency is ensured, so that the production cost is reduced; 5, the consumption of spraying repair materials and the converter repair bricks can be reduced. The powerful guarantee is provided for the use of tundishes.

Description

technical field [0001] The invention relates to the technical field of iron and steel smelting, in particular to a repairing method for a steelmaking converter. Background technique [0002] In the steelmaking production of metallurgical industry, the output of converter steel accounts for more than 80%. In the converter smelting industry, it is very important to optimize the furnace repair method in the converter area, reduce the cost of auxiliary materials for converter repair, prolong the service life of the furnace lining, shorten the maintenance time of the furnace, and improve the utilization rate of the converter. [0003] In the prior art, according to the degree and location of the furnace lining damage, different furnace protection and repair methods can be used, such as slag splashing furnace protection, wet gunning, dry gunning, and brick slag repairing. Various methods have different characteristics and scope of application, such as slag splashing to protect th...

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Problems solved by technology

[0004] However, the production organization of modern steelmaking plants is generally single furnace to single machine, and the service time of the continuous casting sack is relatively long, about 40 hours. The furnace will be repaired at the next time, if the continuous casting heat exchange, the furnace cannot be repaired, especially in the later stage of the furnace service, this situation is more prominent

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