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Beneficiation of Ga from alunite concentrates by selective acid leaching and alkaline precipitation

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
In this study beneficiation of Ga from alunite ore was investigated. The effects of the calcination temperature, H2SO4 concentration, leaching temperature and liquid-solid ratio on the dissolution characteristic of Ga, K and Al were studied. The results showed that increasing the calcination temperature, H2SO4 concentration and leaching temperature can improve the solubility of K and Al. However, higher H2SO4 concentration and lower leaching temperature can improve the dissolution of Ga, which was beneficial to recovery of Ga. On the basis of the solubility difference in H2SO4, a two-stage process of selective acid leaching and alkali precipitation of Ga was proposed. The concentration of Ga was increased significantly from 54 g/t in alunite ore to 4100 g/t in alkali precipitation product. The major elements of Al and K in alunite were recovered as the alum crystal with a purity of 99.62%.
Rocznik
Strony
1028--1038
Opis fizyczny
Bibliogr. 23 poz., rys., tab., wz.
Twórcy
autor
  • College of Materials Science and Engineering, Xiamen Universityof Technology, Xiamen, 361024, China
autor
  • College of Zijin Mining, Fuzhou University, Fuzhou, 350108, China
  • College of Zijin Mining, Fuzhou University, Fuzhou, 350108, China
  • School of Metallurgy and Environment, Central South University, Changsha 410083, China
autor
  • School of Chemistry and Materials, Longyan University, Longyan, 364012, China
autor
  • School of Chemistry and Materials, Longyan University, Longyan, 364012, China
Bibliografia
  • FONT,O., QUEROL, X., JUAN,R., 2007. Recovery of gallium and vanadium from gasification fly ash. Journal of Hazardous Materials, 139, 413-423.
  • FRENZEL, M., KETRIS, M.P., 2016. On the current and future availability of gallium. Resources Policy, 47, 38-50.
  • GUO, Z.H., 1991. Discussion on mineral characteristics and dehydration roasting process of alunite. Zhejiang Chemical Industry, 1, 4-8. (In Chinese).
  • HART,L.R.D.,1989. Alumina chemicals: Science and Technology Handbook. Wiley-American Ceramic Society, USA.
  • HUANG, Z. S., ZHONG,S. P., WANG,R. Y., ZHOU, L. C., 2014. Using acid leaching-selective accumulating process to recover gallium and alum from the slag contained gallium. The conference proceedings of the national rare metal academic communication: 138-144. (In Chinese).
  • KIDA,A., SHIRAHASE,T., KAWAGUCHI, M., 2009. Metal contents including precious metals in waste personal computers. Material Cycles and Waste Management Research, 20, 59-69.
  • KUANG, G., HU, S., CAI, Y. Y., LI, H., 2016. Utilizing alunite comprehensively from Zijin copper tailings by directly pressure acid leaching. The Chinese Journal of Nonferrous Metals, 26, 2412-2419.
  • KUCUK,A., GULABOGLU,M., 2002. Thermal decomposition of Şaphane alunite ore. Ind.Eng. Chem. Res., 41, 6028-6032.
  • KUCUK,F., YILDIZ,K., 2006. The decomposition kinetics of mechanically activatedalunite. Thermochim. Acta, 448, 107-110.
  • LI, D., JIANG, K. X., JIANG, X. X., WANG, R. Y.., FAN,Y. Q., 2014. A Study on the Mechanism of Dehydration of Alunite ore by Roasting. China Resources Comprehensive Utilization, 11, 20-23. (In Chinese).
  • LIANG, X. J., WANG, F. S., 1999. The experiments on extracting vanadium and gallium from alunite deposits and some proposals concerning the comprehensive utilization of these deposits. Mineral Deposots, 18, 276-284. (In Chinese).
  • LUO, M., LIU, C., XUE, J., 2017. Leaching kinetics and mechanism of alunite from alunite tailings in highly concentrated KOH solution. Hydrometallurgy, 174, 10-20.
  • MAHAJAN,S., 1998. Role of materials science in development of InP/InGaAsP light-emitting diodes for lightwave communications. Transactions of the Indian Institute of Metals, 41, 205-217.
  • NASUKAWA,M., 2009. Overview, Chem. Chem. Ind, 62, 617-621.
  • NAZAROV, S., GULAKHMADOV, K., KHAKDODOV, M, 2001. Processing of Aluminum Sulfates into Alumina. Russian Journal of Applied Chemistry, 74, 1392-1394.
  • ÖZDEMIR,M., ÇETISLI,H., 2005. Extraction Kinetics of Alunite in Sulfuric Acid and Hydrochloric Acid. Hydrometallurgy, 76, 217-224.
  • POURBAIX,M., 1974. Atlas of Electrochemical Equilibria in Aqueous Solutions. National Association of Corrosion Engineers, Houston, USA.
  • RUAN, R. M., TANG, X. F., ZHONG, S. P., WU, Z. L.., LIU, X. Y., 2010. Extraction of alumina and potassium sulphate from alunite by Thermal pressure leaching. China Patent, CN101913633A.
  • WANG, R. Y., 2014. Experimental Research on Water Leaching-Crystallization Process to Produce Potassium Sulfate from Alunite Concentrate. Nonferrous Metals Engineering & Research, 3, 14-16.
  • ZHAI, X.J., LV, Z.J., 2010. Gallium metallurgy. Metallurgical Industry Press, Beijing, China. (In Chinese).
  • ZHAO, W., YAO, X., ZHONG, S., 2015. Extraction of Al and K salts from associated alunite tailings by an acidcalcination-water leaching method. Journal of Cleaner Production, 47, 38-50.
  • ZHONG, Y., GAO, J., MENG, L., 2017. Phase transformation and non-isothermal kinetics studies on thermaldecomposition of alunite. Journal of Alloys and Compounds, 710, 182-190.
  • ZHOU, L.Y., CHEN, S.C., 2008. The extraction metallurgy of dissipatedmetal. Metallurgical Industry Press, Beijing, China. (In Chinese).
Uwagi
Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-1be5bd00-4c45-429f-86b7-11fcd0edd027
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