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dissolution. JIN et al[9] found that the presence of heavy mental salts in sodium cyanide solutions decreases the time for gold dissolution, for instance, a lead concentration of the order of 5 mg/L... of co-intensification of cyanide leaching gold by mercury ions and oxidant were studied. 2 Experimental Sodium cyanide, mercury nitrate, peroxide, oxygen and sodium hydroxide are of analytical grade......
Trans. Nonferrous Met. Soc. China 31(2021) 1113-1126 Efficient destruction of sodium cyanide by thermal decomposition with addition of ferric oxide Kai-wei DONG1, Feng XIE1, Wei WANG1, Yong-feng... Received 30 April 2020; accepted 22 November 2020 Abstract: Efficient destruction of cyanide by thermal decomposition with ferric oxide addition was proposed. The mechanism of destruction of sodium......
leaching tests, main and interaction effects of concentrations of sodium cyanide (0.5-2.5 g/L NaCN), ammonia (0-2 mol/L NH3) and lead nitrate (0-1000 g/t (Pb(NO3)2) were examined. Ammonia leaching... of concentration of sodium cyanide (0.5-2.5 mol/L NaCN), ammonia (0-2 mol/L NH3) and lead nitrate (0-1000 g/t Pb(NO3)2) on the extraction of gold. The range of concentration of sodium cyanide was determined......
is 92.4% under conditions of sodium cyanide dosage 4 kg/t,leaching time 28 h,the ratio of liquid to solid 2:1 after acidic residue is roasted at 600 ℃ for 2 h to remove carbon. The mass of cyanide... extraction and gold recovery from cyanide tailings by cyanide process after reduction roasting and acid leachingZHENG Ya-jie,GONG Chang,SUN Zhao-ming(School of Metallurgy and Environment,Central South......
Effects of sodium tungstate on properties of micro-arc coatings on magnesium alloys ZHAO Fang(赵 芳)1, LIAO Ai-di(廖爱娣)2, ZHANG Rong-fa(张荣发)1, 2, ZHANG Shu-fang(张淑芳)1, 2, WANG Hai-xia(王海霞... prepared by micro-arc oxidation on AZ91HP magnesium alloys in a base solution containing 10 g/L NaOH and 12 g/L phytic acid with addition of 0-8 g/L sodium tungstate. The effects of sodium tungstate......
比为1:3,浸出时间为48 h的条件下,金的浸出率为87.83%. 关键词:氰化尾渣；脱硅；碱浸出；氰化浸出 中图分类号:TF 11.31 文献标志码:A Recovering gold from cyanide residue by alkaline predesilication-cyanide leaching technique WANG... cyanide residue for predesilication. The effects of stirring speed, solid-liquid ratio, initial NaOH concentration and reaction temperature on the leaching rate of silicon dioxide were studied......
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exhibited highly improved sensing performances. The ZnO@NiO nano crystals were found to have better capacity for iron cyanide than sodium cyanide. The effects of significant parameters such as contact... Co. All of compounds were analytical grade and were used as-received without any purification. Sodium cyanide (NaCN) and potassium hexacyano ferrate (K4[Fe(CN)6]-iron cyanide) as sources of cyanide......
University of Science and Technology, Ganzhou 341000, China) Abstract: Based on the monomineral flotation test, the activation mechanism of chloros and sodium metabisulfite on cyanide chalcopyrite surfaces... activated by chloros and sodium metabisulfite. When the butyl xanthate is adsorbed on the cyanide chalcopyrite surfaces before activation, the apparent activation energy is higher. After the treatment......
J. Cent. South Univ. (2020) 27: 1495-1502 DOI: https://doi.org/10.1007/s11771-020-4385-z Dissolution of gold in chalcopyrite-containing cyanide solutions YANG Wei(杨玮)1, 2, ZHANG Kai(张凯)1, 2, WANG... and Springer-Verlag GmbH Germany, part of Springer Nature 2020 Abstract: The gold dissolution in anoxic cyanide solution in the presence of chalcopyrite was studied with a rotating disc electrode......
