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

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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7% Fe) that can be simply cast into anodes for electrolysis (Figure 6). Of all the anode-quality copper made, a portion will proceed to casting and on to electrolysis, while the remaining molten copper will flow to the next step: regeneration of CuO. 40 In a flash furnace, molten copper is blown through atomizers with preheated air (250 °C) to oxidize the copper to fine particulate CuO. This highly exothermic reaction provides significant potential for energy capture. It is understood that molten CuO is highly corrosive, so following flash oxidation cool air is introduced to solidify the CuO.

Taking into account that part of arsenate generated in the oxidizing roasting, there remained some arsenic in the calcine inevitably. 95%. With the extension of the roasting time, the efficiency of sulfur removal is getting better and better too. 85%. 19%. In addition, with roasting time increasing, the removal and solidification of sulfur and arsenic were promoted identically. The process of arsenic removal was almost complete about 20min while removal of sulfur was slower. 100 90 =^ 80 I 70 S.

Removal and solidification rates of sulfur and arsenic were investigated detailedly in this research on the premise that slaked lime was taken as solidification reagent. The double-layered pellet roasting experiment would provide parameters and theoretical basis for industrial production. Experiment Materials Sulfur and arsenic-bearing gold ore comes from Hunan province. Main element composition and Chemical phase analysis of main element is given in Table I and Table II. 074 "represents the unit of Au composition is g/t.

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