ESTABLISHING / CONTRIBUTIONS PLATINUM METALS FROM ORE OF COPPER

摘要

According to the invention, the procedure and the device for extraction of platinum metals and their concentration from copper ores relates to extraction of solid materials through a subsequent concentrate treatment using flotation, and actually to a new method of analysing lower contents of platinum metals in products of copper ore concentration, melting and refinement, as well as to a construction design of a new device, a stand-alone cell within the mill/hydrocyclone cycle, in order to achieve desired exploitations of metals in copper concentrate and refinement. The analysis is performed from the solution of the complex matrix of copper ore and of copper concentrate. The elements are extracted first by slow evaporation with the mixture of concentrated (48%) HF and with concentrated (78%) NHO3 first, then evaporation till dry with HCl+HNO3. The management procedure with aqua regia is repeated twice, then the dry residual is added concentrated (37%) HCl+NaCL and again evaporation twice. Finally, the dry residual of 2 mg minimum is dissolved in (1+1) HCl and diluted with distilled water in 50 ml solution of maximum concentration. Treating poor complex ore with a mean content of elements: Cu=0.432%, Au=0.280g/t, Pt=0.102g/t, Pd=0.071g/t, Ag=1.506g/t provides the concentrate with a 23.310% quality containing 9.824g/t Au, 2.800g/t Pt, 1.600g/t Pd and 49.730g/t Ag, and the exploitation is 89.500% Cu, 58.420% Au, 57.620% Pt, 51.31% Pd and 55.210% Ag. The device for determination and extraction of platinum metals and their concentration from copper ore consists of the inlet box (1) for inserting raw material into a chamber (2) with the mechanism support bridge (4) with the rotor (10) rotating in the stator (11) and driven by the gear unit (6) with the electric motor. In the top part of the cell there is the cylindrical outlet box (3) where reagents and the frothing device are located, over which there is the air supply valve (5), and in the bottom part of the cell there is the exhaust valve (7), i.e. the valve for discharging the flotation cell from the cone connected to the chamber (8), where pulp and froth levels are maintained using the level regulation device (9).