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Experimental Verification of the Use of Free-energy Minimization Techniques for Modeling Complex Sulfide Smelting.

Authors
Flynn-HE
Source
Ph d Dissertation Univ Mo-Rolla :105 pages
Link
NIOSHTIC No.
10005784
Abstract
This paper describes research into the use of free-energy minimization techniques as a method for modeling complex sulfide smelting. Model results were verified experimentally by smelting a variety of sulfide concentrates using a submerged lance technique where the matte, slag, and gas phases are in virtual equilibrium. Experiments were conducted at 1,523 k. It was found that a combination of the submerged lance technique with an equilibrium computer program was a useful way for estimating activity coefficients in systems where the volatility of species such as lead and zinc and their compounds make it difficult to determine activities using conventional experimental techniques. In addition, it was found that a chemical equilibrium program using activity coefficient expressions derived from simpler systems can be applied to complex sulfide smelting to determine the distribution of elements between the matte, slag, and gas phases.
Publication Date
19870101
Fiscal Year
1987
NTIS Accession No.
NTIS Price
Identifying No.
MIR 9-87
NIOSH Division
WO;
Source Name
Ph.d. Dissertation, Univ. Mo-Rolla
State
MO;
Performing Organization
Univ. Missouri--Rolla
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