Electric arc furnace steelmaking process with oxygen, fuel and powder common injection

Abstract

The invention provides an electric arc furnace steelmaking process with oxygen, fuel and powder common injection. Oxygen, fuel and powder input devices are combined into different injection input modules according to the volume of an electric arc furnace and a metal material structure in the furnace, and are mounted on a wall of the furnace; the oxygen, fuel and powder injection is finished by one injection input module with a water cooling function; the injection flow of oxygen and fuel and the injection type and speed of powder are determined according to demands of the steelmaking process; and the injection input module with the water cooling function is a common injection device integrating oxygen blowing, powder spraying and combustion heating functions. The process accelerates the electric arc furnace steelmaking rhythm, improves the utilization efficiency of energy sources, reduces the usage amount of a slag former, guarantees the powder injection penetrating power, enables use and maintenance of injection equipment to be relatively convenient, and solves the problems of common injection of oxygen, fuel, carbon powder and lime powder at multiple points on the wall of an electric furnace.

Description

technical field [0001] The invention belongs to the technical field of electric arc furnace steelmaking in the ferrous metallurgical industry, and is particularly suitable for processes such as oxygen blowing decarburization, foaming slag making, oxygen combustion boosting, powder spraying slag making and the like in the electric arc furnace. Background technique [0002] The injection of oxygen, gas, carbon powder, lime powder, etc. in the electric arc furnace can meet the technological requirements of melting scrap steel, decarburization, foaming slag, slag dephosphorization and sulfur in the process of electric furnace smelting, so that the composition and temperature of molten steel in electric arc furnace steelmaking The control ability is stronger, and the energy and material consumption is less. [0003] With the development of technology, the injection device has gradually developed from a single oxygen blowing function to a multi-media and multi-functional integrate...

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Problems solved by technology

[0008] In order to improve the smelting rhythm and energy utilization efficiency of electric furnace steelmaking, reduce the amount of slagging agent used, and at the same time ensure the penetration of powder injection, make the use and maintenance of injection equipment more convenient, in order to solve the problem of multiple points on the wall of the electric furnace, In order to solve the problem of co-injection of oxygen, fuel, carbon powder and lime powder, an electric arc furnace steelmaking process of co-injection of oxygen, fuel and powder is provided.

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