Control method for reducing iron loss by reasonably matching scrap steel in 120t converter

Abstract

The invention discloses a control method for reducing iron loss by reasonably matching scrap steel in a 120t converter, which comprises the following steps: S1, a heating preparation stage: S11, adding iron-containing materials into a molten iron tank, and adding a baking device on a running track of the molten iron tank; and S12, connecting a power supply of the baking mechanism with an external power supply. According to the control method for reasonably matching the scrap steel with the 120t converter to reduce the iron loss, the iron-containing material is added before tapping, the scrap steel adding amount can be increased under the condition that molten iron is insufficient, a detailed iron-containing material adding amount standard is formulated according to the actual molten iron tank condition and molten iron components, long-period stable operation of the molten iron tank is guaranteed, and meanwhile, the iron loss is reduced. The steel scrap ratio is optimized, steel scrap resources are reasonably used and reasonably matched, the steel scrap proportion of converter steelmaking is increased to the maximum extent, the converter smelting cost and consumption are reduced, the steel scrap resources on site are fully utilized, steel and iron material consumption and iron consumption are reduced, the single-furnace capacity is maximized, and the converter utilization efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of converter smelting raw material technology, in particular to a control method for reducing iron consumption by rationally collocating scrap steel with a 120t converter. Background technique [0002] Converter steelmaking uses molten iron, scrap steel and ferroalloy as the main raw materials, without external energy, and relies on the physical heat of the molten iron itself and the chemical reaction between the components of the molten iron to generate heat to complete the steelmaking process in the converter. It is a kind of coolant with relatively stable cooling effect in the converter, which generally accounts for 10%-30% of the total loading of the converter. Increasing the amount of scrap steel in the converter can reduce the cost and consumption of converter steelmaking, but in actual production, due to the wide range of scrap steel sources, In addition, the quality is uneven, and the yield varies gr...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a 120t converter with reasonable collocation of steel scrap to reduce iron consumption control method, to solve the serious unreasonable use of scrap steel proposed in the above background technology, which cannot be used in reasonable collocation, slag overflow and The slopping is more serious, which reduces the steel output of the 120t converter, and consumes a lot of converter, which increases the production cost of converter smelting.

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