Improvement of the system of thermal energy recovery of exhausted gases for the RKO-11 ore thermal furnace

IF 0.8 4区 材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING
E. S. Martynova, S. A. Martynov, V. Yu. Bazhin, O. N. Masko
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引用次数: 0

Abstract

In the processes of carbothermal silicon and ferrosilicon reduction running in the ore-thermal furnace (OTF), we observe the formation of large amounts of flue gases whose temperature reaches 500–600 °C at the inlet of the smoke exhaust system. The amount of dust removed with flue gases may constitute up to a half of the mass of the final product and, therefore, the content of microsilica fume in the flue gases is quite high and requires mandatory utilization. According to the heat balance of the processes of silicon and ferrosilicon reduction in the OTF, the amount of heat removed with the flue gases and dust can be as high as up to 30%. Thus, the waste gases not only remove a significant amount of heat but also create a huge load on the aspiration system. This not only decreases the recovery rate but also creates serious problems connected with the pollution of the environment. The urgent task is to utilize the thermal energy of high-temperature waste gases and also to create conditions for the effective dust removal and, hence, for decreasing the prime cost of production.

RKO-11矿热炉废气热能回收系统的改进
在矿热炉(OTF)中运行的碳热硅和硅铁还原过程中,我们观察到在排烟系统入口处会形成大量温度达到 500-600 °C 的烟气。随烟气排出的粉尘量可能占最终产品质量的一半,因此烟气中的微硅烟尘含量相当高,需要强制利用。根据 OTF 中硅和硅铁还原过程的热平衡,烟气和粉尘带走的热量可高达 30%。因此,废气不仅带走大量热量,还会给吸气系统带来巨大负荷。这不仅会降低回收率,还会造成严重的环境污染问题。当务之急是利用高温废气的热能,并为有效除尘创造条件,从而降低生产的主要成本。
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来源期刊
Metallurgist
Metallurgist 工程技术-冶金工程
CiteScore
1.50
自引率
44.40%
发文量
151
审稿时长
4-8 weeks
期刊介绍: Metallurgist is the leading Russian journal in metallurgy. Publication started in 1956. Basic topics covered include: State of the art and development of enterprises in ferrous and nonferrous metallurgy and mining; Metallurgy of ferrous, nonferrous, rare, and precious metals; Metallurgical equipment; Automation and control; Protection of labor; Protection of the environment; Resources and energy saving; Quality and certification; History of metallurgy; Inventions (patents).
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