Raw material preheating and shoot charging system of top-blown oxygen steelmaking converter

Abstract

The invention discloses a raw material preheating and shoot charging system of a top-blown oxygen steelmaking converter, which consists of a raw material cabin, a raw material heating furnace and a measuring hopper, wherein a charged material conveying belt is arranged below the raw material cabin; a spiral material distribution slope with a chute is arranged on a small flue of a gas hood of the top-blown oxygen steelmaking converter; the discharging opening of the measuring hopper directly faces the spiral material distribution slope; the central line of the chute is parallel to or coincide with the tangent line of the small flue; a plurality of fuel gas injection pipes provided with rocket engines are arranged on the pipe wall of the small flue which is positioned at the lower part of acharging opening; a rocket engine is arranged in each fuel gas injection pipe; the fuel gas injection pipe blows a fuel gas downwards and obliquely to the small flue; and the rocket engines are connected with a high-pressure O2 source and a high-pressure CH fuel source. The raw material preheating and shoot charging system of the top-blown oxygen steelmaking converter can improve the fluxing power of the converter.

Description

technical field [0001] The invention relates to an oxygen top-blown steelmaking converter, in particular to a raw material preheating shooting feeding system for an oxygen top-blowing steelmaking converter. Background technique [0002] When small and medium-sized converters are smelted by the double-link method, the heat loss is relatively large, and the physical heat in the smelting process is somewhat insufficient. The comprehensive calculation is about 10-12°C lower than the ideal tapping temperature. It is of course a good idea to start dephosphorization when it is low or consider how to increase the physical heat in the converter in the early stage of smelting and use less combustion heat, and save as much charcoal as possible for the final temperature rise. How can it not be dephosphorized. So how can we start to melt the slag or quickly melt the slag when the furnace temperature is relatively low? Is there still potential for low-temperature slag reduction in small...

AI Technical Summary

Problems solved by technology

Disadvantages are: the raw material is obliquely falling in the reverse direction of the rapidly rising flue gas flow, the kinetic energy of the falling raw material is offset by the uneven rising air flow, and it cannot maintain a stable parabolic trajectory and fall to the high temperature area where the strong air flow stirs

[0005] However, this theoretical approach is still empty talk because there is no system equipment verification that can be implemented. In order to verify whether the new theory and new concept are correct or not, a raw material preheating shooting system experiment of oxygen top-blown steelmaking converter is needed to verify.

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