Study on the Treatment Process of High Silicon Cobalt White Alloy AITranslate

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Chinese Library Classification Number:TG146.21[金属学及工艺—金属材料]

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To address the challenge of difficult leaching of valuable elements in high silicon cobalt white alloy,by employing sodium chlorate as an oxidant and adding Fe~(3+),one of the composition elements of the high silicon cobalt white alloy,as oxidation transformers in sulfuric acid system,the Co and Cu could be effectively leached from the high silicon cobalt white alloy while the leaching of silicon reduced.An orthogonal test was conducted to study the effects of initial Fe~(3+)concentration,particle size of the high silicon cobalt white alloy,and reaction temperature on leaching efficiency.Optimized process parameters were obtained,and economically favorable process parameters with lower leaching cost were determined according to the actual production demand.The optimized process parameters are as follows:initial Fe~(3+)concentration of 15 g/L,particle size of the high silicon cobalt white alloy less than 0.075 mm,and reaction temperature of 85℃.Among them,the initial Fe~(3+)concentration has the greatest impact on the leaching efficiency.Under the optimized process parameters for 5.5 h,the leaching rates of Co and Cu reach 99.3%and 98.7%,respectively.The economically favorable process parameters are as follows:initial Fe~(3+)concentration of 10 g/L,particle size of the white alloy ranging from 0.075 mm to 0.150 mm,and reaction temperature of 85℃.The leaching rates of Co and Cu after 6.7 h leaching reach 98.9%and 98.5%,respectively.