期刊
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
卷 26, 期 12, 页码 3245-3252出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S1003-6326(16)64457-6
关键词
chalcopyrite; galena; cyanide absorption; flotation; butyl xanthate
资金
- National Key Technologies R&D Program of China [2012BAB08B03]
Adsorbing tests between CN- and chalcopyrite or galena were conducted firstly, and then flotation tests of the two cyaniding minerals were investigated in butyl xanthate (BX) system. Results showed that the interaction between CN -and the two mineral surfaces were both chemical adsorption and can be described by the Langmuir adsorption isotherm model. In the optimum condition of pH 6.5 and 4.0 mg/L BX, the recovery of cyaniding chalcopyrite and galena reached 82.1% and 63.9%, respectively. BX improved the hydrophobicity of the surfaces of the two minerals, although CN- reduced the contact angle on the surface of minerals. The inhibitory effect of CN- on chalcopyrite far outweighed galena. Electrostatic adsorption exists in the interaction between BX and the surface of galena after cyanide treatment in the pH range of 4.2-8.4, while the interactions between BX and the surface of chalcopyrite after cyanide treatment is chemical adsorption.
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