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By Tao Jiang,Jiann-Yang Hwang,Phillip J. Mackey, et al.John Wiley & Sons, Inc.|Wiley||Wiley-TMSAdult NonfictionTechnologyLanguage(s): EnglishOn sale date: 01.03.2013Street date: 21.02.2013Preview

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Vacuum aluminothermic reduction lithium is from a US patent about aluminum reduction of lithium oxide. Aluminum reduction of spodumene has been reported by Stauffer [7]. Lithium is difficultly reduced if not adding calcium oxide into spodumene. 2% under the conditions of 1050-1150 °C for 2 hours. 0013 Pa [4]. The previous researches were focused on the production of lithium. But the recovery of reduction residue was not investigated. In present work, a novel vacuum aluminothermic reduction lithium process is developed which used lithium carbonate, alumina and calcium oxide as raw materials.

Relying on two largely exothermic reactions, the conventional process can be run autogenously in principle; in reality, some added heat is required. Figure 7 [6] shows that oxygen-enrichment, fuel energy value, and slag treatment constitute the 344 kWh per 1000 kg of concentrate energy input. Energy capture as high pressure steam (220 kWh per 1000 kg concentrate) in this process is limited to flue gases from the acid plant. As such, conventional flash smelting and converting consumes a net 124 kWh for every 1000 kg of copper concentrate processed.

Journal of Metals (July) 84-87. 2. , 1556, De Re Metallica, trans. C. H. Hoover, Dover Publications Inc. : New York 1950. 3. , 2003, Review of copper pyrometallurgical practice: today and tomorrow. Minerals Engineering, 893-919 (16). 4. , and Biswas, A, Extractive Metallurgy of Copper, 4 th Edition, Pergamon Press, (2002) 460 p. 5. Pitt, C. and Wadsworth, M. Current Energy Requirements in the Copper Producing Industries, Journal of Metals, TMS, June (1981) 25-34 6. 1, Thermfact and GTT-Technologies, CRCT, Montreal, Canada (2012).

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