By Z. M. Dogan, B. Yarar (auth.), B. Yarar, Z. M. Dogan (eds.)
This quantity relies at the lawsuits of the "NATO complex research Institute on Mineral Processing layout" held in Bursa-Turkey on August 24-31, 1984. The institute was once equipped via Professor B. Yarar of the Colorado tuition of Mines, Golden, Colorado, 80401, united states, Professor G. Ozbayoghu and Professor Z. M. Dogan of METU-Ankara, Turkey, who used to be the director. the aim of the institute was once to supply a global discussion board at the topic and replace the data on hand. individuals have been from Turkey, England, Greece, Spain, Portugal, Belgium, Canada, and the us. in addition to authors contributing to this quantity, displays have been additionally made by way of Drs. Yarar, Raghavan, Schurger, and Mr. Kelland. Many assistants and co-workers helped. they're gratefully said. Acknowledgment can be owed to Drs. Ek, de Kuyper, and Tolun. Dr. Gfilhan Ozbayoglu, and Mr. S. Ozbayoglu have been relatively priceless within the total association and webhosting of many foreign site visitors. We owe them precise thank you. NATO, medical Affairs department, is gratefully said for the furnish which made this task attainable. Z. M. Dogan B. Yarar 2 utilized MINERALOGY IN ORE DRESSING William Petruk CANMET, 555 sales space road, Ottawa, Ontario, KIA OGI summary Mineralogy utilized to ore dressing is a competent advisor for designing and working a good concentrator. A technique for conductiqg mineralogical reports together with ore dressing used to be, as a result, constructed. The approach contains characterizing the ore and analysing the mill products.
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Numerous data relate the kinetics of the oxidation of sulphides to the formation of thick oxide layers and finally to the complete transformation of sulphides into oxides. In the following series, some of the sulphides are listed showing a diminishing tendency toward oxidation : Arsenopyrite > Pyrite > Chalcopyrite > Sphalerite > Galena > Chalcocite. Sulphides of old geological formations are less readily oxidized than those of later formations. Two adjoining solid phases are much more readily oxidized than a single substance.
25. 3. Petruk, W. R. An Evaluation of the Recovery of Free and Unliberated Mineral Grains, Metals and Trace Elements in the Concentrator of Brunswick Mining and Smelting Corp. , CIM Bull. ~ (833), 1981, pp. 132. 4. M. "Principles of Mineral Dressing". , New York, 1939, pp. 70. 5. Melvik, T. An Empirical Model to Establish the Liberation Properties of Minerals, Proc. 14th IntI. Min. , Toronto, CIM 1982, Preprint No. VIII-2. 6. P. The Prediction of Mineral Liberation from Mineralogical Texture, (14th IntI.
Dissolved oxygen of air in water, may act as an oxidizing agent, by reducing itself into water. 8 -2 Figure 2. Equilibrium diagrams of E-pH 0 system at 25 C 5 . 030 log (HO~ ) H202 produced by this reaction, is decomposed. Thus, its concentration does not exceed 10- 6 M. 3, should be placed between the lines indicated by -6 and -4 in Figure 2. The line a of the figure represents the lower limit of water stability. g. sulphide minerals, having potentials lower than 02 - H202 equilibrium lines 4 and 5 in aqueous solutions, are stable only when they are isolated from the atmospheric oxygen.