The invention relates to a method for leaching bulk concentrate of chalcopyrite-type by means of an aqueous solution containing sulphuric acid and an oxygen feed at atmospheric pressure and at a temperature between 750C and the boiling point of the solution. It is typical of the method that the particle size of the concentrate to be fed into leaching is in the region of 80 % below 60 - 100 µm and that the concentrate is leached with an aqueous solution, the acid concentration of which is regulated to be around 20 - 90 g/l.
申请公布号
WO2010149841(A1)
申请公布日期
2010.12.29
申请号
WO2010FI50484
申请日期
2010.06.10
申请人
OUTOTEC OYJ;RUONALA, MIKKO;LEPPINEN, JAAKKO;TIIHONEN, JARI