New PDF release: Primary and Secondary Lead Processing. Proceedings of the

By Michael L. Jaeck (Eds.)

ISBN-10: 0080372929

ISBN-13: 9780080372921

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Extra resources for Primary and Secondary Lead Processing. Proceedings of the International Symposium on Primary and Secondary Lead Processing, Halifax, Nova Scotia, August 20–24, 1989

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1, TMS-AIME, 1983, pp. 81-93 7. , Met. Trans. B, 16B, September, 1985, pp. 627-638 8. , Met. Trans. B, 19B, October, 1988, pp. 719-729 9. , Proc. Ausiralas. Inst. Min. 271, September, 1979, pp. 21-25 10. , Thermochimica Ada, 85,1985, pp. 115-118 11. , Combustion and Flame, 34,1979, pp. 1-11 12. , Met. Trans. B, 7B, September, 1976, pp. 307-314 13. , Trans. TMS-AIME, vol. 218,1960, pp. 70-81 14. , Met. Trans. B, 20B, February, 1989, pp. 77-85 15. , London, 1974 16. , Met. Trans. B, 18B, March, 1987, pp.

These generally are based on a shrinking core type model, with an oxide layer forming on the surface of the reacting particle. Such a model cannot be applied to galena oxidation. 1314 The formation of this phase (which is confirmed by x-ray diffraction examination of the reacted particles3) would imply a weight gain up to fairly high particle temperatures. Therefore, a different explanation of the reaction mechanism is required for galena. 15 It is evident that the vapourization of various species is much more likely to play a significant role in the combustion of galena than in the case of other sulphides.

An alternative to the production of the crude oxide, as described by the flowsheet in Figure 4, is the direct condensation of zinc and lead from the FLAME REACTOR off-gas. HRD has targeted the installation and operation of ä zinc condenser on the Monaca FLAME REACTOR facility within the next eighteen months. We envision no major technical difficulties with the condensing of the relatively clean zinc-containing gas that would be generated from lead slag fuming in the FLAME REACTOR Process. 05 per pound), the by-product credit should increase to around $125 per short ton of slag processed.

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Primary and Secondary Lead Processing. Proceedings of the International Symposium on Primary and Secondary Lead Processing, Halifax, Nova Scotia, August 20–24, 1989 by Michael L. Jaeck (Eds.)


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