Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 29    No. 7    July 2019

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CFD modelling and optimization of oxygen supply mode in KIVCET smelting process
Jia-dong LI1, Ping ZHOU1, Zhou LIAO2, Li-yuan CHAI3, Chenn Q. ZHOU4, Ling ZHANG5

1. School of Energy Science and Engineering, Central South University, Changsha 410083, China;
2. Zhuzhou Smelter Group Company Limited, Zhuzhou 412004, China;
3. School of Metallurgy and Environment, Central South University, Changsha 410083, China;
4. Center for Innovation through Visualization and Simulation, Purdue University Northwest, 2200 169th Street, Hammond, IN 46323, USA;
5. Changsha Nonferrous Metallurgy Design and Research Institute Company Limited, Changsha 410019, China

Abstract:The influence of oxygen supply mode on the KIVCET (a Russian acronym for flash-cyclone-oxygen-electric-smelting) process was investigated using numerical simulation. The mass rate ratio (MRR) of central oxygen to lateral oxygen of the central jet distributor (CJD) burner was defined to express the oxygen supply mode, and the KIVCET process with an MRR ranging from 0.09 to 0.39 was simulated. The results show that there are four efficient reaction regions that correspond to four CJD burners. A higher central oxygen flow improves the mixing between particles and oxygen, thus enhancing reactions and shortening the reaction regions. However, a higher dust rate is induced due to the spread of the particle columns. The optimal MRR for a KIVCET furnace with a smelting capacity of 50000 kg/h is suggested to be 0.31. In this case, the chemical reactions associated with the feed are completed with an acceptable dust rate.

 

Key words: KIVCET furnace; central jet distributor (CJD) burner; computational fluid dynamics (CFD); central oxygen; lateral oxygen; optimization

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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