Method for supplying heat in converter by using carbon-based heating agent

Abstract

The invention discloses a method for supplying heat in a converter by using a carbon-based heating agent. Specifically, the method comprises: after scrap steel is added to the converter, firstly adding the carbon-based heating agent and then adding iron. In this way, the temperature rising rate is increased after the heating agent is added and the heat utilization rate is higher. In the steelmaking process of the converter, if the amount of scrap steel is increased, it is obvious that the heat is insufficient; if a heat source is not added, the converter tapping temperature is inevitably lowered, and then temperature is increased in a finery. The method supplies the heat in the converter by using the heating agent so as to reduce electrodes and power consumption in the finery, and therebyreduce costs relatively.

Description

technical field [0001] The invention belongs to the technical field of iron and steel metallurgy, and in particular relates to a method for supplementing heat in a converter using a carbon-based heating agent. Background technique [0002] Converter steelmaking uses molten iron, scrap steel, and ferroalloy as the main raw materials. The steelmaking process is completed in the converter by the physical heat of the molten iron itself and the heat generated by the chemical reaction between the components of the molten iron without the aid of external energy. The traditional converter steelmaking process is to mix the molten iron from the blast furnace into the converter after being mixed in the iron mixing furnace, and fill it with scrap steel in a certain proportion, and then lower the water-cooled oxygen lance to blow oxygen with a certain oxygen supply, lance position and slagging system. smelting. When the blowing end point is reached, the gun is lifted and the furnace is ...

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Problems solved by technology

[0003] Due to the large price difference between scrap steel and molten iron and the change in the material structure of the converter, when the ratio of scrap steel is high, some molten iron has low temperature and low silicon furnace heat is insufficient, and the low temperature at the end will result in low purity of molten steel, high refining and smelting pressure, and high power consumption. , Unstable production rhythm, excessive inclusions and other production quality problems, in order to increase the scrap ratio, reduce the initial heat gap of the converter, improve the hit rate of the end point temperature of the converter, reduce the erosion of the furnace lining, and reduce the consumption of refining power consumption electrodes, it is particularly important to do a good job of converter heat supplement

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