Occurrence, 58-65 metallurgy

Benrte d antimnine, 178, 74. Bibliography—history, 5 cliemis. 84 mineralc, 45 -. geological occurrence, 58-65 metallurgy, 187-144 antimony preparations, 174-17i analysis. 191-195 production and yalmtion. 203-- OA Bidon, 78, 137. 

The preceding examples and the treatment of the metallurgy of iron are typical of the processes involved in the production of metals of relatively high density. The remaining heavy metals that are used industrially are not considered in detail here. However, Table 11.8 gives a limited selection of information on the mode of occurrence, metallurgy, and uses of these metals. 

R, C. Vickery, Scandium, yttrium and lanthanum, Chap, 31 in Comprehensive Inorganic Chemistry, Vol. 3, pp, 329-53, Pergamon Press, Oxford, 1973, and references therein, C. T. Horovitz (ed.), Scandium Its Occurrence, Chemistry, Physics, Metallurgy, Biology and Techndlogy, Academic Press, London, 1975, 598 pp. 

Horovitz, C. T., Scandium. Its Occurrence, Chemistry, Physics, Metallurgy, Biology and Technology, p 156. Academic Press, New York, 1975. 

Occurrence Ontario, South Africa, Siberia. Derivation Occurs with platinum, from which it is recovered during the purification process. Available forms Produced as powder that can be fabricated by casting or powder metallurgy techniques. Single crystals are available. 

In respect to occurrence (abundance 10-4%), metallurgy and properties of the metals, molybdenum and tungsten are remarkably similar. 

This work follows the completion of a similar text on the extractive metallurgy of zinc, written with the same purpose in mind. The two metals are so closely associated in terms of mineral occurrence and extraction, that it seemed necessary to develop a complementary text on lead and have companion reference volumes covering each metal. Some of the details in this text repeat to some extent sections in the earlier zinc text, such as the coverage of slag fuming, but this has been done to allow each to stand alone, with sufficient information for those only interested in lead. 

The last comprehensive treatment of scandium as an element and of its alloys and compoimds was given in the book Scandium. Its occurrence, chemistry, physics, metallurgy, biology and technology in 1975 (Gschneidner 1975). Meanwhile numerous... 

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