Custom-Designed Fluxes for Refining Nickel Alloys
Nickel is a strategic metal widely used for the production of key materials. With the development of modern industry, the demand for nickel and nickel-alloys has dramatically increased and there is now a shortage of high-grade nickel resources. This poses a potential threat for the materials industry. Traditionally, nickel is produced by pyrometallurgical methods using nickel sulphide ore. However, good supplies of this mineral are decreasing and production of ferronickel from low-grade oxide ores as well as the recovery of nickel from spent catalysts generated are becoming widespread. Sulphur, phosphorus and arsenic are often found in these materials and the removal of such impurities during the production of nickel becomes an important issue. In this study, experiments were conducted with custom-designed fluxes that incorporated waste materials from the aluminum industry in order to remove sulphur, phosphorus and arsenic from nickel alloys without incurring a significant loss of other valuable elements. Effects of various factors, such as oxygen potential, temperature, slag composition, and additives, on the removal of the impurities were investigated. In this article, effectiveness of a single slag treatment for simultaneous removal of phosphorus, sulphur and arsenic from the nickel alloy is compared with a multi-slag treatment in which each impurity is removed under the most favourable conditions.
Arsenic Phosphorus Sulphur Ferronickel Nickel alloy Nickel oxide Red mud Optical basicity Usedcatalyst
Yindong YANG Mansoor BARATI Alexander McLEAN
Department of Materials Science & Engineering University of Toronto, Toronto, Ontario, Canada, M5S 3E4
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
1-13
2012-05-27（万方平台首次上网日期，不代表论文的发表时间）