Method for comprehensive utilization of paigeite through direct reduction-electric furnace melting separation of rotary hearth furnace

Abstract

The invention discloses a rotary hearth furnace direct reduction-electric furnace melting method for comprehensive utilization of boron ore, which belongs to the field of ironmaking and resource comprehensive utilization. The invention relates to a method for separating and enriching boron and iron in boron-iron ore, and is used for the development and utilization of boron-iron ore. It is characterized in that it uses boron iron ore powder, carbonaceous reducing agent, and binder as raw materials to prepare liquid pig iron (or semi-steel) and High-quality boron-rich slag with a B2O3 content of 10-22%. The produced liquid pig iron (or semi-steel) can be used as raw material for steelmaking, and the boron-rich slag can replace boronite ore to produce boric acid or borax, so that boron and iron resources can be fully utilized to realize the comprehensive utilization of boronite ore. The method has the advantages of simple process, short process, complete separation of boron and iron, and high efficiency. The separated product can meet the needs of boron industry and iron and steel industry at the same time, and has good social and economic benefits.

Description

technical field

[0001] The invention belongs to the fields of chemical industry, metallurgy and resource comprehensive utilization, and relates to a method for the comprehensive utilization of boronite by rotary hearth furnace coal-based direct reduction-electric furnace melting, which is used for the development and utilization of boronite. Background technique

[0002] Boron is widely used in chemical industry, medicine, light industry, textile, electronics, metallurgy, building materials, national defense and military industry, cutting-edge science, agriculture and other departments. Since 1956, my country's boron industry has mainly used boronite ore (commonly known as "white boron ore") as the main raw material. At present, this kind of ore is close to exhaustion, and more than 60% of it depends on imports. The boron ore (commonly known as "black boron ore") located in the Liao-Jilin area is a large-scale boron-magnesium-iron symbiotic deposit that has been proven in my...

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