<p>The invention relates to a method for recovering gold in connection with the hydrometallurgical production of copper from a waste or intermediate product containing sulphur and iron that is generated in the leaching of the copper raw material. The recovery of both copper and gold occurs in a chloride environment. The gold contained in the waste or intermediate is leached by means of divalent copper, oxygen and alkali bromide in a solution of copper (II) chloride and alkali chloride, in conditions where the oxygen-reduction potential is a maximum of 650 mV and the pH a minimum of 0.5. The bromide accelerates the dissolution of the gold.</p>
申请公布号
WO2007093666(A1)
申请公布日期
2007.08.23
申请号
WO2007FI00030
申请日期
2007.02.09
申请人
OUTOTEC OYJ.;HAAVANLAMMI, LIISA;HYVAERINEN, OLLI;TIIHONEN, MARIKA;TONTTI, REIJO
发明人
HAAVANLAMMI, LIISA;HYVAERINEN, OLLI;TIIHONEN, MARIKA;TONTTI, REIJO