Proceedings of the Metallurgical Society of the Canadian by G. Kachaniwsky and C. Newman (Eds.)

By G. Kachaniwsky and C. Newman (Eds.)

The symposium brings jointly papers through business clients of oxygen, significant oxygen manufacturers, engineering businesses and best specialists within the box. It covers fresh improvement in oxygen expertise - either in software and expertise. either pyrometallurgical and hydrometallurgical purposes are mentioned, and O2 construction applied sciences characteristic the cryogenic approach including a number of substitute novel tools. verified and new rising tactics are featured, and elevated strategy efficiencies, larger throughputs and lowered strength intake are one of the goals of the symposium

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Extra info for Proceedings of the Metallurgical Society of the Canadian Institute of Mining and Metallurgy. Co-Sponsored by the Non-Ferrous Pyrometallurgy and Hydrometallurgy Sections of the Metallurgical Society of the CIM

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Although the oxygen enriched blast air causes local excess heat and it may damage the refractory around tuyeres, abovementioned operations with under 30 % enrichment are reported to have no problem . S. converter was 40 % . S. converter-like furnace to approximately 50 % on average without refractory damages by complex blasting technique. 3 1982, the oxygen plant of Naoshima Smelter was reinforced from 4,000 to 12,000 In m /hr production. The purposes of it were the expansion of treatment capacity of the Mitsubishi Process and the rationalization of exhaust gas treatment system.

RMS), a wholly owned subsidiary of WMC. 6 g/t gold. 6 g/t gold, has been outlined. 49 50 Two main types of sulphide mineralisation exist. The ore to be mined in the initial stages of the operation is composed primarily of bornite with some chalcocite and chalcopyrite. In the later stages of the project the ore is primarily chalcopyrite with some bornite and minor chalcocite and pyrite. At the time of writing, the metallurgical plant is in the early stages of construction. Detailed design is not yet complete and therefore some of the data referred to in this paper is preliminary.

However, the long term effect on the whole furnace at such a high oxygen concentration has not been confirmed yet. The distribution of minor elements such as Pb, Zn, As and Sb which transfer to gas phase very easily as shown in Table 5 are strongly dependent on volume of exhaust gas (Ohshima and Hayashi, 1986). In the case of arsenic, A S 2 , AsS and AsO are assumed as gas species, and then transfer amount into gas phase ( X ) is expressed as follows. X SM - As< 2P here AS2 + Ρ AsS S M P As , r , r Ρ Ρ Ρ ^As AsS As0 R Τ V T/ R As0 > (1) saturation degree atomic weight of As partial pressure of each species volume of exhaust gas a gas constant temperature As the equilibrium of these species between liquid and gas phases are considered in following reactions, and the equlibrium constants for them are represented by Kl, K2 and K3, equation (1) is converted to equation (2).

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