Gas type fine reduction furnace for steel strips

Abstract

The invention discloses a gas type fine reduction furnace for steel strips. The fine reduction furnace comprises a bracket, a shell, an observation hole, an inner furnace wall, an outer furnace wall, a bottom lining, a heat storage plate, a nozzle, a furnace roof, a vent and a muffle pipe. The shell is prepared into a horizontal rectangular box body by using a metal plate; the shell is supported by the bracket; and a hollow hearth with rectangular transverse section, consisting of the bottom lining, the outer furnace wall, the inner furnace wall and the furnace roof, is formed in the cavity of the shell. The bottom of one side of the hearth is provided with the nozzle for introducing gas, the corresponding position of the other side of the hearth is provided with the observation hole, and the vent is formed in the center of the furnace roof. The heat storage plate is horizontally placed and used for supporting the muffle pipe, the steel strip passes through the muffle pipe in the length direction, the bottom of the heat storage plate is positioned above the nozzle, and the muffle pipe is arranged on the heat storage plate to receive radiant heat. The bottom of a bottom plate of the muffle pipe is provided with a rib reinforcing structure, and the structure reduces the stress and the deformation of the muffle pipe at a high temperature and under a high load and prolongs the service life of the muffle pipe. A gas heating structure is adopted in the fine reduction furnace, so that the gas is jet from the nozzle and combusted fully, the heat efficiency is high, the temperature in the hearth is uniform, and the reduction quality consistency of the iron powder is good.

Description

technical field [0001] The invention relates to an industrial furnace, in particular to a gas-fired steel strip fine reduction furnace for iron powder production. Background technique [0002] Iron powder is the basic raw material of powder metallurgy, and its quality has a crucial impact on powder metallurgy products. The reduction process is an indispensable process in the production process of iron powder. After the iron powder is processed by the reduction process, the residual hardening stress caused by the previous processing is eliminated, and the content of oxygen, carbon, sulfur and other impurities in the powder is reduced. The steel belt reduction furnace is the most advanced equipment in the existing production equipment, which can fully meet the requirements of the reduction process. The core technology of the steel belt reduction furnace is mainly reflected in the heating structure. Electric heating and coal-fired heating are currently the commonly used heatin...

AI Technical Summary

Problems solved by technology

[0003] The present invention mainly aims at the shortage of electric heating or coal-fired heating in the existing reduction furnace, and proposes a gas-fired steel boiler that uses clean energy, produces very little dirt after combustion, has uniform temperature in the furnace, high thermal efficiency, low investment, and large unit production capacity. With a fine reduction furnace, the furnace has a simple structure and is easy to manufacture

Images