Novel pure oxygen smelting furnace and using method thereof

Abstract

The invention relates to a novel pure oxygen smelting furnace and a using method thereof. The novel pure oxygen smelting furnace comprises a furnace body and an automatic control system; the furnace body is fixedly arranged on the ground, the furnace body is of a hollow structure, a preheating section, a reduction reaction section and a melting reaction section are sequentially arranged in the furnace body from top to bottom, a feeding opening for feeding at least one of raw material ore, coal briquettes and coke and a smoke outlet for discharging smoke are formed in the positions above the preheating section, a molten pool is arranged in the melting reaction section, a combustion chamber communicating with the molten pool is fixedly arranged on the peripheral wall of the upper part of themolten pool, and a liquid accumulation pool is further arranged in the center of the bottom of the molten pool; and the automatic control system involves a PLC, a flow detecting and adjusting deviceand an oxygen / fuel ratio setting device. The novel pure oxygen smelting furnace has the advantages of reasonable structural design, stable and reliable operation, energy saving and environmental protection, low operation cost and high automation degree, not only can the smelting efficiency be improved, but also the emission amount of carbon dioxide and other pollutants can be effectively reduced.

Description

Technical field [0001] The invention relates to the technical field of boiler smelting, in particular to a novel pure oxygen smelting furnace and a method of use thereof. Background technique [0002] Generally, blast furnace smelting is often used in iron ore smelting. It mainly feeds ore, coke, and flux from the top of the blast furnace into the blast furnace through a feeding device, and the high-temperature air and The pulverized coal is sprayed into the blast furnace from the tuyere on the upper part of the hearth, and the ore is preheated, reduced and melted under high temperature, and finally turned into molten iron, which is discharged from the blast furnace tap hole. The hot air supplied to the blast furnace by the smelting method is pressurized and heated air, and the useful oxygen in the air accounts for less than 21%, and 3% oxygen is added during the oxygen-enriched coal injection. More than 24%; and the blast furnace hot air is obtained by burning about 45% of the ...

AI Technical Summary

Problems solved by technology

At present, the metallurgical industry at home and abroad mainly reduces the blast furnace CO by reducing the total energy consumption of the process. 2 Emissions, but do not change the fuel structure of the blast furnace, only rely on the improvement of process and equipment to reduce CO 2 emissions are very limited

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