Home List of Titles Basic nickel carbonate part II: microstructure evolution during industrial nickel production from basic nickel carbonate
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/35868
- Basic nickel carbonate part II: microstructure evolution during industrial nickel production from basic nickel carbonate
- Rhamdhani, Muhammad A.; Jak, Evgueni; Hayes, Peter C.
- A systematic investigation has been carried out to determine the effects of temperature, reduction/oxidation time, and partial pressure of hydrogen on the extent of the oxygen and sulfur removal during basic nickel carbonate (BNC) processing under laboratory conditions. It has been shown that increasing the temperature and reduction time increases the extent of oxygen and sulfur removal. Decreasing the hydrogen partial pressure tenfold lowers the extent of oxygen removal and results in the formation of residual NiO (incomplete reduction). The microstructure characteristics of industrial plant samples are correlated with the results obtained from the laboratory studies to identify the underlying elementary reactions and phenomena occurring and to understand the mechanisms of formation of the residual NiO in the final nickel product during industrial processing. As a result of these studies, it is recommended that the actual process is carried out at temperatures below 600 °C to avoid the formation of this residual NiO.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Engineering and Industrial Sciences
- Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, Vol. 39, no. 2 (Apr 2008), p. 234-245
- Publication year
- Basic nickel carbonate processing; BNC processing; Desulfurisation; Hydrogen partial pressure; Microstructure; Nickel carbonate; Oxidation time; Oxygen removal; Partial pressure; Reduction; Thermal effects
- Publisher URL
- Copyright © 2008 The Minerals, Metals & Materials Society and ASM International.
- Peer reviewed