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Download 4th International Symposium on High Temperature by Tao Jiang,Jiann-Yang Hwang,Phillip J. Mackey, et al.John PDF

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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24 References [1] Wei Yang, et al. "Extraction of Au from high arsenic refractory gold concentrate by bacterial oxidation-cyanidation" The Chinese Journal of Nonferrous Metals, 5(2011): 1151-1158. [2] Li-jun Bao, Yuan Wu. "The pretreatment of high arsenic gold concentrate" Precious Metals, 3 (2003): 61-66. [3] Qiu-hongYuan, et al. "Bioleaching mechanism of orpiment with different bacteria strains" The Chinese Journal of Nonferrous Metals, 6 (2010): 1234-1240. [4] Qiang Yang, Min Guo. "A study on Process of Pellet-Enveloping-Roasting for Pretreating Refractory Gold Concentrate" Multipurpose Utilization of Mineral Resources, 2(2001): 1-8.

Current Copper Smelting Practice De Re Metallica [2] details the mining, smelting, and refining techniques and technologies of the 16 century. Little has changed in the chemistry of copper production since then. Of the numerous copper smelting processes [3, and references therein, 4], one of the more frequently employed practices is the flash smelting and converting setup to produce anode-quality copper. While this typical copper smelting methodology is highly effective, there is an ongoing effort to improve the environmental and energy "footprint" of the process.

It was the unique design of the bottom blown plus high concentration oxygen made the process possible to be autogenous smelting. The reasons include 1) low temperature operation does not require too much energy; 2) high Fe/SiC>2 ratio results in low slag volume for less heat loss; 3) high concentration oxygen reduces the heat loss associated with the off-gas; 4) most of the oxidization reactions occur in the bottom part of the furnace so that the heat generated from these reactions can be efficiently absorbed by the matte and slag.

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