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Mathematical modeling of minor-element behavior in flash smelting of copper concentrates and flash converting of copper mattes.

Authors
Chaubal-PC; Sohn-HY; George-DB; Bailey-LK
Source
Metall Trans B 1989 Feb; 20(1):39-51
NIOSHTIC No.
10008700
Abstract
A mathematical model has been developed to describe the behavior of minor elements during flash smelting and flash converting. The model incorporates equations describing volatilization of minor elements from the molten particles and distribution of these elements between the molten phases in the settler. The basic premise of the volatilization model is that at the surface of the molten particle, the partial pressures of the minor-element species are those at equilibrium. Transport of the minor-element species to the gas then is described by external mass transfer. Good agreement has been obtained between observed and predicted behaviors. The effects of oxygen enrichment, matte grade, and wall temperature, as well as the bath temperature, on minor-element behavior have been elucidated.
Keywords
Gases; Chemical-kinetics; Chemical-reactions; Smelting; Particle-aerodynamics
CODEN
MTTBCR
Publication Date
19890201
Document Type
IH; Final Contract Report; Journal Article
Fiscal Year
1989
NTIS Accession No.
NTIS Price
Identifying No.
MIR 37-90
Issue of Publication
1
ISSN
0360-2141
NIOSH Division
WO
Source Name
Metallurgical Transactions. B. Process Metallurgy
State
UT; DC
Performing Organization
Univ. of Utah
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