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Indexed by:期刊论文

Date of Publication:2014-11-01

Journal:JOURNAL OF MATERIALS PROCESSING TECHNOLOGY

Included Journals:SCIE、EI

Volume:214

Issue:11

Page Number:2284-2291

ISSN No.:0924-0136

Key Words:Electric arc furnace; MgO; Numerical simulation; Temperature field; Flow field

Abstract:Targeted at the 3000 kVA and 1500 kVA electric arc furnaces for MgO production, 3D models are developed to characterize the thermal behavior in the furnaces. The electromagnetic stirring effect of the molten bath is studied respectively with a rated current, and its influence on the temperature field is predicted by the model in FLUENT. Some calculated results are proved reliable by comparison with the measurements. It can be seen that a stronger stirring effect leads to a higher average flow velocity in the 3000 kVA furnace, and the size of its molten bath is much larger than that in the 1500 kVA furnace. The appropriate location of the three electrodes can help to maintain a homogenous bath temperature distribution. The comparison between the calculated results and the measurements proves that the dimensional designs of the two furnaces are acceptable for the prevention of the local overheating or overcooling. Large-capacity electric arc furnaces are qualified with significant advantages in energy conserving and increase of productivity. (C) 2014 Elsevier B.V. All rights reserved.