Document Type

Article

Publication Date

4-1-2002

Publication Title

Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science

Abstract

Removal of unwanted particles from molten metal by flotation is one of the most useful melt cleansing techniques used by the foundry industry. An effective way of flotation of particles in a melt relies on purging a gas into the molten metal through holes in a rotating impeller. Impeller rotation creates turbulence inside the melt, which helps agglomerate the impurity particles and. thereby, enhances their removal from the melt. In addition, turbulence increases the probability of particles attaching to the rising gas bubbles and, therefore, enhances the chance of their removal from the molten metal. A mathematical model has been developed to simulate the turbulent multiphase flow field inside the flotation treatment furnace. Simulations based on the model were used to demonstrate the effect of the various process parameters on the performance of a batch-type rotating impeller particle flotation process.

Volume

33

Issue

2

First Page Number

297

Last Page Number

303

DOI

10.1007/s11663-002-0013-6

Publisher Statement

Copyright 2002, ASM International. This paper was published in Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science Vol. 33 Iss. 2 pp. 297-303 and is made available as an electronic reprint with the permission of, ASM International. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplications of any material in this paper for a fee or for commercial purposes, or modification of the content of this paper are prohibited.

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