Harima Works

Sumitomo Metal Mining Co., Harima Works Japan ISF/El 40... 

Company Name Mount Isa Mines Limited Pasminco Port Pirie Smelter Hachinohe Smelting Company Sumitomo Metal Mining Co. Harima Works Hosokura Smelting Refining Co. 

IMPURITY DISTRIBUTION IN THE ISP PROCESS AT THE HARIMA WORKS OF SUMITOMO METAL MINING CO., LTD. 

Table I- Typical Operating Conditions of the IS-process at the Harima Works...

At the Harima Works, about 80% of the cadmium present in the raw material is recovered. In fact, about 75% of the cadmium present in the raw material is evaporated during the sintering process and is collected in the sinter dust. The sinter dust is treated with highly acidic process water to extract the cadmium for subsequent recovery in a distillation column. In addition, thallium and indium are extracted and separated fiom the cadmium prior to... 

Table V lists the distribution ratios for tin, copper, arsenic and iron present as impurities in the PWG zinc, which is the major product of the Harima Works. Except for iron, the other impurities are expected to increase in die future. Therefore, in order to maintain the high quality of our PWG zinc, it is necessary to further strengthen the corresponding measures to control the impurity contents compared to existing competitive technologies.

C. Minami, K. Takei, T. Funahashi and H. Kubota, Recovery of High Purity Thallium at Sumitomo Harima Works , Rare Metals 90. Kokura, Kitakyushu, 14-16 November, 1990, 259-262,... 

H. Kadoya, Y. Kondo and H. Kawabata, Improvements of Sinter Plant Operation at Sumitomo Harima Works , Zinc Lead 95. T. Azakami, N. Masuko, J.E. Dutrizac and E. Ozberk, Eds., The Mining and Materials Processing Institute of Japan, Tokyo, Japan, 1995,213-221. 

In addition to surface-enhanced exciton dissociation and geminate recombination, direct photoexcitation (Northrop and Simpson, 1956 Heilmeier et al., 1963 Harima et al., 1989) and exciton-exciton annihilation (Silver et al., 1963 Jortner et al., 1963 Braun, 1968 Johnston and Lyons, 1968 Foumy et al., 1968 Swenberg, 1969 Braun and Dobbs, 1970 Orlowski and Scher, 1983) arguments have been proposed. In direct photoexcitation, a free electron and free hole are created without the involvement of intermediate states. With the exception of the work of Harima et al. and Orlowski and Scher, there have been few references to direct or exciton-exciton photogeneration processes in the past one and a half decades. 

Work to build power plants on the basis of molten carbonate fuel cells has also been done at UTC and a number of companies in different countries in Germany by MTU CFG Solutions GmbH, Munich, jointly with FCE, United States, in Italy by Ansaldo S.p.a., in Japan by Ishikawajima Harima Heavy Industries Co., and others. 

Authors Tom Baggio and Kenichiro Suetsugu would like to thank the following Panasonic members for their contributions to this work S. Hibino, A. Furusawa, and T. Ikari of Environmental Production Engineering Laboratory, Kadoma City, Osaka Japan E. Abe, H. Saitoh, M. Ojima, Y. Hayasa, and Y. Takaku of the AVC TV Products Division, Utsunomiya, Japan H. Kitahara, S. Kumamoto, and M. Aihara of Harima Chemicals, Inc., Kakogowa, Japan. 

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