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Kinetics of simultaneous recovering of Au and Ag from CTs by chloridizing volatilization methods

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Cyanide Tailings (CTs) are known as hazardous resources that accumulate hundreds of millions of tons, threatening the ecological environment. This work proposes an eco-friendly and efficient way to recover gold and silver from CTs. The effects of calcium chloride dosage, silicon dioxide dosage, pellet moisture content, roasting temperature, and roasting time on Au and Ag chloridizing volatilization were studied. The kinetics of simultaneously recovering of gold and silver from cyanide Tailings by chlorination roasting was investigated. It was determined that the chloridizing volatilization rates increased with increasing calcium chloride dosage, temperature and decreasing silicon dioxide dosage, pellet moisture content. The chloridizing volatilization kinetics followed a shrinking core model, with inter-diffusion through gangue layer as the rate determining step. This finding is in accordance with the apparent activation energy (Ea) of 24.01 kJ•mol-1 (Au) and 24.62 kJ•mol-1 (Ag). The orders of reaction with respect to moisture content, temperature, calcium chloride dosage and silicon dioxide dosage were also achieved. The rate of reaction based on diffusion-controlled process can be expressed by semi-empirical equations. The control steps of the gold and silver recovery process were investigated by the kinetic study, which provided theoretical guidance for the optimization of the method.
Rocznik
Strony
art. no. 172522
Opis fizyczny
Bibliogr. 27 poz., rys., tab., wykr.
Twórcy
autor
  • School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • State Key Laboratory of Bayan Obo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, Inner Mongolia, China
autor
  • School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
autor
  • School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
autor
  • School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
autor
  • School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
autor
  • School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • State Key Laboratory of Bayan Obo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, Inner Mongolia, China
autor
  • Mining Company of Shougang Group Co., Qianan 064404, Hebei Province, China
Bibliografia
  • HUANG, X., LI, G.,HU, L.,SU, Y., 2015. Research progress and prospect of extracting silver. Chinese Journal of Rare Metals. 39(3):268-275.
  • QIN,Z.J., WANG,B.H., YANG,R.H, WANG, H., LIN, S.Y., LI, Y., CHENG, Y.B., HUA, M.X., 2019. Research and application of comprehensive recovery of gold,silver,lead and zinc from cyanide tailings under high cyanide and high alkali conditions. Nonferrous Metals (Mineral Processing Section). 6, 32-36.
  • CHEN,D.J., GUO,H.N., MIAO, L., LI,F.L., 2021. Beneficiation experimental study on comprehensive recovery of a copper-gold-silver-sulfur polymetallic ore. Nonferrous Metals (Mineral Processing Section). 3, 83-87.
  • SUN, Z.M., SUN, C.B., WANG, J.Z., YIN, W.Z., 2014. Optimization and mechanism of gold-bearing sulfide flotation. Rare Metals. 33(3), 363–368.
  • LI, Z.Y., WANG, W.W., Yue, K., CHEN,M.X., 2016. High temperature chlorination of gold with transformation of iron phase. Rare Metals. 35(11), 881-886.
  • LONG, H.L.,LI H.Y., PEI J.N., Srinivasakannan, C.,Yin,S.H., Zhang,L.B., Ma,A.Y., Li,S.W.,2021. Cleaner recovery of multiple valuable metals from cyanide tailings via chlorination roasting. Separation Science Technology. 56(12), 2113-2123.
  • ZHANG, Z.Y., WANG, H.B., SUN, L.G., YANG, W.J., PENG, Y.H., YANG, Y.Q., 2022. Application of chlorination technology in the treatment of solid wastes and refractory ore. Mining and Metallurgy, 31(4), 114-121.
  • WANG,W.W., LI, Z.Y., 2020. Recovery and kinetics of gold and iron from cyanide tailings by one-step chlorination–reduction roasting. Minerals Engineering, 155(3):106453.
  • LIU,D.X., GUO,C.H., WANG,Y., YUAN,C.X., 2011. Gold and silver recovery from residue of roasting-cyaniding process in Tanjianshan of Qinghai. Nonferr Metals (Extractive Metallurgy). 8, 32-36.
  • HUANG, H.H., WANG, Y, YUAN, C.X., LI, Y., 2011.Extraction of gold and silver from gold-extraction residue. Nonfer Metals (Extractive Metallurgy). 10, 37-39.
  • WEI,Q.J., YUAN,C.X., LIU,D.X., XU,X.H. 2014. Experiment of recovery gold from cyanide tailings of a gold mine in Guizhou by high chlorination. Nonferr Metal Eng. 4(3), 45-48.
  • SUN, M.F., ZANG,Y.F., WANG, X.W., 2012. Coal-based reduction-roasting of ferric oxide from a cyanidation slag. Metal Mine. 3, 155-157.
  • WANG,W., LIU,L., Feng,A.S., LIU, H.Z., 2015.Recovery of iron from gold smelting slag from Henan by direct reduction roasting-low intensity magnetic separation process. Metal Mine. 12, 169-172.
  • ZHANG, Y.H., LI, Y., WEI, J., WANG, Y., LUAN, D.W., LIU, H.X., 2015. Effect of dissolving of ferric oxide from calcine cyanide residue on leaching of gold and silver. Nonferr Metals (Extractive Metallurgy). 12, 48-51.
  • SHANG, D.X., CHEN, F.F., ZHANG, Y.F., ZENG, M., 2011.Recovery of iron from gold-cyanide residue by reduction roasting and magnetic separation. Mining and Metallurgical Engineering. 31(5), 35-38.
  • QIN, H., GUO, X., TIAN, Q., ZHANG, L., 2020. Pyrite enhanced chlorination roasting and its efficacy in gold and silver recovery from gold tailing. Separation and Purification Technology. 250, 117168.
  • MUKHERJEE T.K., GUPTA C.K., 1983. Base Metal Resource Processing by Chlorination. Mineral Processing and Extractive Metallurgy Review. 1(1-2), 111-153.
  • LI,H., MA,A., Srinivasakannan C., ZHANG, L., LI,S., YIN, S., 2018. Investigation on the recovery of gold and silver from cyanide tailings using chlorination roasting process. Journal of Alloys and Compounds. 763, 241-249.
  • CHANG,Y.C., XU,X.H., WANG,Y., 2015. Chloridizing-roasting test study on gold and silver recovering from cyanidation residue. Mining Metallurgy. 24(3), 42-44.
  • ZHANG, B.K., WANG, Q.M., GUO, X.Y., TIAN, Q.H., 2022. The mechanism and kinetics for chlorination roasting of copper smelting slag. Transactions of Nonferrous Metals Society of China. https://kns.cnki.net/kcms/detail/ 43.1239.TG.20220414.1055.030.html.
  • SUN,H.L., YU,H.Y., WANG,B., MIAO,Y., TU,G.F., BI,S.W., 2008. Leaching dynamics of 12CaO•7Al2O3. The Chinese Journal Nonferrous Metals. 8(10), 1920-1925.
  • LI, H.R., FENG, Y.L., LUO, X.B., WANG, H.J., DU, Z.W., 2008. Leaching kinetics of extraction of vanadium pent oxide from clay mineral.Journal of Central South University (Science and Technology.) 39 (6), 1181-1184.
  • FOUGA, G.G., PASQUEVICH, D.M., BOHÉ, A.E., 2007. The kinetics and mechanism of selective iron chlorination of an ilmenite ore. Mineral Processing and Extractive Metallurgy. 116(4),230-238.
  • LEI,C., CHEN,T., YAN,B., XIAO,X., 2022. Reaction characteristics and kinetics of gallium in chlorination roasting of copper tailings using calcium chloride. Rare Metals. 41(3), 1063-1070.
  • Mohammad S.S., Davood M., Mehdio I., 2009. Kinetics of sulfuric acid leaching of cadmium from Cd-Ni zinc plant residues. Journal of Hazardous Materials.163 (2), 880-890.
  • XUE,G., LI,X,E., 2012. Experimental research on gold and silver recovery from roasted cyanidation slags. Gold, 33(8), 41-42.
  • ZHANG, F.Y, ZHANG, Y.H., 2007,Study on the recovery of gold and silver from cyanide residue. Rare metal materials and engineering, 36(3), 335-338.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-76e62049-0bf1-4574-83f9-d1d323b3080d
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