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- W574157179 abstract "This chapter discusses the production of metals by high-temperature reduction techniques. The most widely used general method of producing the rare metals in a pure condition is by reduction of the oxides or halides. The form of the metal and slag products after a reduction reaction depends upon the amount of heat available from the reaction. If this is sufficient to melt both metal and slag, it may be possible to separate them cleanly. The metal falls through the slag and collects at the base, when it can be removed on cooling as a solid ingot. When insufficient heat of reaction is available to melt the slag, as is often the case when oxides are reduced with calcium or magnesium, the metal is present as a powder in a matrix of slag. The metal and slag are usually sintered together somewhat, particularly if the original reactants had been pressed together before initiation. The precise form of the discrete particles of metal depends upon whether or not the metal becomes molten or whether sufficient time is available at high temperature for particles to coalesce appreciably." @default.
- W574157179 created "2016-06-24" @default.
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- W574157179 date "1963-01-01" @default.
- W574157179 modified "2023-09-25" @default.
- W574157179 title "METAL PRODUCTION BY HIGH-TEMPERATURE REDUCTION TECHNIQUES" @default.
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- W574157179 doi "https://doi.org/10.1016/b978-0-08-009868-5.50010-6" @default.
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