The microstructure and composition of granulated platinum furnace slags
Platinum-bearing concentrates are processed in three South African smelters by Anglo Americans Platinum business. The tapped slags from the primary melting furnaces and slag cleaning furnace (SCF) are granulated in high-pressure streams of water. The bulk of the granulated slag consists of amorphous silicate glass which contains trace amounts of entrained matte as sulphide inclusions, as well as slag spinel crystals. Quenched slags such as those used in this study are thought to reflect the conditions and phases present in the molten slags during smelting. In this study electron probe microanalysis (EPMA) of the glass composition revealed variation within furnace slag as well as between furnace and SCF slag composites. Not only do the results reflect variation in dissolved base metal levels, but they also allow a record of slag chemistries to be compiled and inter-elemental relationships to be examined. Larger SCF slag granules were also selected for study - these contain multiple matte inclusions. Results of glass EPMA of these granules and corresponding entrained matte analysis in the scanning electron microscope (SEM) can be used to demonstrate the degree of equilibrium achieved within the slag, and provide a comparison of base metal partition ratios with those at equilibrium.
Platinum slags Slag composition Slag mineralogy Base metal partitioning
Lesley ANDREWS Chris PISTORIUS
Anglo American Technical Solutions-Research, Johannesburg, South Africa Center for Iron and Steelmaking Research, Carnegie Mellon University, U.S.A
国际会议
Ninth International Conference on Molten Slags,Fluxes and Salts(第九届国际熔渣、溶剂与熔盐学术会议 MOLTEN12)
北京
英文
1-15
2012-05-27（万方平台首次上网日期，不代表论文的发表时间）