Slag cleaning furnace top-blown immersion technology

Abstract

Disclosed is a slag-cleaning furnace top-blown immersion technology which comprises using the oil-gas mixture formed from 0# diesel or 0# diesel and compressed air as the reducing agent, inputting oil amount of the oil spray gun into DCS system, spraying into fondant under the control of an automatic regulating valve, inputting compressed air and regulated wind amount based on deacidizing degree and atmosphere in the furnace, conveying the reducing agent to pipes controlled by the automatic regulating valve, inserting the oil spray gun into the fused bath from the top of the furnace and immersing into the fondant, deacidizing the magnetic iron oxide through blowing the reducing agent into fondant by means of top-blowing pattern. The invention can improve deacidizing efficiency substantially.

Description

technical field [0001] The invention relates to the reduction of magnetic iron oxide (Fe 3 o 4 ) technology, especially a depleted electric furnace top-blown submerged injection reduction technology. Background technique [0002] At present, more and more manufacturers have adopted strong oxidation smelting technology, and the negative effect brought by strong oxidation smelting is that magnetic iron oxide is enriched in slag, which increases the viscosity of slag and makes copper and slag difficult to melt in subsequent processes. Separation, the copper content in the slag increases, and nodules are easy to occur in the furnace, which affects the effective use area of ​​the hearth, and even hinders the smooth progress of the depletion electric furnace process. [0003] At present, the depleted electric furnaces of some domestic manufacturers use solid reducing materials for reduction, but the disadvantages of adding solid reducing materials are low reduction efficiency an...

AI Technical Summary

Problems solved by technology

[0002] At present, more and more manufacturers have adopted strong oxidation smelting technology, and the negative effect brought by strong oxidation smelting is that magnetic iron oxide is enriched in slag, which increases the viscosity of slag and makes copper and slag difficult to melt in subsequent processes. Separation, the copper content in the slag increases, and nodules are easy to occur in the furnace, which affects the effective use area of ​​the hearth, and even hinders the smooth progress of the depletion electric furnace process

[0003] At present, the depleted electric furnaces of some domestic manufacturers use solid reducing materials for reduction, but the disadvantages of adding solid reducing materials are low reduction efficiency and high energy consumption

Some foreign manufacturers use gas reducing agents, such as natural gas, coal gas or liquefied petroleum gas, etc. It has the advantage of high reduction efficiency, but it is not easy to use due to geographical conditions, and there is a greater safety hazard in high temperature environments

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