跳至主要内容

Oxygenated Leaching of Copper Sulfide Mineral under Microwave-Hydrothermal Conditions

Read  full  paper  at:
http://www.scirp.org/journal/PaperInformation.aspx?PaperID=20228#.VNCDrCzQrzE

ABSTRACT
A study on microwave assisted chalcocite leaching was carried out with a microwave hydrothermal reactor. The leaching was conducted with thick mineral slurries (50-100g/l). The leaching media is a mixed solution of CuCl2 and NaCl. The investigation included the effect of leaching temperature, quantities of the minerals per unit slurry volume as well as the initial concentration of cupric ions. The results were discussed and compared with using conventional leaching method.
 
Cite this paper
J. Hwang, S. Shi, Z. Xu and X. Huang, "Oxygenated Leaching of Copper Sulfide Mineral under Microwave-Hydrothermal Conditions," Journal of Minerals and Materials Characterization and Engineering, Vol. 1 No. 2, 2002, pp. 111-119.
 
References
[1]M. Valayapetre and A.E. Torma; “Electrochemical recovery of copper from covellite”; Metal, 32 [11] 1120-1123 (1978).
 
[2]D.J.Mckay; “ The direct electrorefining of copper matte”, JOM, 44-48 (1993)
 
[3]A.K. Bose, B.K. Banik, N. Lavlinskaia, M. Jayaraman and M.S. Manhas; “MORE chemistry in a microwave”; Chmtech, 18-23, 1997.
 
[4]S.S. Park; “Synthesis of alumina sulfate from kaolin by microwave extraction”; J. Am. Ceram. Soc., 83 [6] 1341-45 (2000).
 
[5]Anon; “Microwave dissolution”; Analytical Chemistry; 58 (14) 1424a 1426a (1986)
 
[6]K.E. Haque; “Microwave energy for mineral treatment processes – a brief review”; Int. J. Miner. Process, 57 1-24 (1999).
 
[7]U. Oberhagemann, M. Jeschke and H. Papp; “Synthesis of highly ordered boron-containing BMCM-41 and pure silica MCM-41”; Microporous and Mesoporous Materials; 33 165-172 (1999)
 
[8]W. Ding; “Leaching behavior of complex copper sulfide concentration with ferric chloride by microwave irradiation”; Rare Metals, 16 [2] 152-155 (1997).
 
[9]R. Padilla, D. Lovera and M.C. Ruiz; “Leaching of chalcopyrite in CuCl2-NaCl-O2 system”; EPD Congress 1997, 167-177 (1997).
 
[10]M.C. Ruiz, S. Honores and P. Padilla; “Leaching of a chalcocite concentrate with cupric chloride-oxygen”; EPD Congress 1997, 139-147 (1997).
 
[11]M.C. Ruiz, S. Honores and R. Padilla; “Leaching of Digenite concentrate in oxygenated chloride media at ambient pressure”; Metallurgical and Materials Transactions B, 29B 961-969 (1998).
 
[12]R.Z. Vracar, I.S. Parezanovic and K.P. Cerovic; “Leaching of Copper(I) sulfide in calcium chloride solution”; Hydrometallurgy, 58 261-267 (2000).
 
[13]F. Chemat, D. C. Esveld, M. Poux and J. L. Dimartino; “Role of selective heating in the microwave activation of heterogeneous catalysis reactions using a continuous microwave reactor”: J. Microwave Power and Electromagnetic Energy; 33 (2) 88-94 (1998).
 
[14]I.S. Hudiara, “Microwave complex permitivity of water at high temperatures”, IETE Technical Review, 15 [3] 221-223 (1998).
 
[15]S. Ryynanen, P.O. Risman and T. Ohlsson, “The dielectric properties of native starch solutions – a research note”, Journal of Microwave power and Electromagnetic Energy, 31 [1] 50-53 (1996).
 
[16]A.S. Jhaveri and M.M. Sharma; “Kinetics of absorption of oxygen in aqueous solutions of cuprous chloride”; Chem. Eng. Sci., 22 1-6 (1967).
 
[17]T. Tran and D.A.J. Swinkels; “The kinetics of oxidation of Cu (I) chloride by oxygen in NaCl-HCl solutions”; Hydrometallurgy, 15 281-295 (1986).
 
[18]R. Winand; “Chloride hydrometallurgy”; Hydrometallurgy, 27 285-316 (1991).              eww150203lx
标签：

评论

发表评论

此博客中的热门博文

Does Immigration Promote the Investment of the Monopolistic Firm?

In the present paper, we examine the effect of increasing uncertainty of immigrants’ growth on the optimal timing of investment of a firm that has a monopolistic power over the labor market. It is revealed that when the uncertainty of immigrants’ growth is more than a threshold level, increasing uncertainty of immigrants’ growth accelerates the optimal timing of firms’ investment and enhances the economic growth, even if the uncertainty of immigrants’ growth is formulated by the geometric Brownian motion, which is in sharp contrast to the standard result that an increase in the uncertainty postpones the optimal timing. With an increase in the immigrants over the past ten years, workforces in the host countries have been growing significantly to the extent that the immigrants represent 70% of the increase in the workforce in Europe, and 47% in the United States as OECD indicates. In the present paper, we attempted to investigate the effect of increased uncertainty caused by the growi...
发表评论
阅读全文

Education Policy Implementation: A Mechanism for Enhancing Primary Education Development in Zanzibar

Education is one of the fundamental rights of individuals; therefore, the government of a country needs to develop and strengthen educational policy and quality as well as to ensure that everyone has equal access to basic education. The improvement of access and quality of education in the world is becoming as an essential factor in development, whereas the basic education (primary school), is acknowledged as a foundation of the higher educational development for every country. To fulfill this goal, governments introduce several policies and procedures; however, it requires some reforms and participation from the politician, policymakers, and other stakeholders to re-examine educational policy so that it can lead to multiplication and betterment of the reforms. Educational reforms actually focus on accountability. A positive educational development and reform is very challenging and needs more effort and strategy on how to use and utilize the resources effectively as such it can achie...
发表评论
阅读全文