METHOD AND APPARATUS FOR SEPARATION OF MOLYBDENITE FROM PYRITE CONTAINING COPPER-MOLYBDENUM ORES

摘要

A method and an apparatus for the separation of the mineral components of a pyrite containing copper-molybdenum ore by flotation. The method comprises grinding the ore in the presence of soda ash in an open circuit to produce an aqueous ore slurry; subjecting the slurry to a collective flash flotation step (10) in the presence of soda ash and sodium sulphide to recover a first part of metal sulphides of the ore in the form of a first concentrate (C1); subjecting the tailings (T1) of the collective flash flotation step (10) to a grinding step (13) and to a collective rougher flotation step (14) to recover a second part of metal sulphides of the ore in the form of a second concentrate (C3); and subjecting the concentrate (C1) of the collective flash flotation step (10) and the concentrate (C3) of the collective rougher flotation step (14) to a selection step (12) to separate molybdenite from the other metal sulphides of the concentrate.

主权项

1. A method for the separation of the mineral components of pyrite containing copper-molybdenum ores by flotation, the method comprising the steps of:
a) grinding the ore in the presence of soda ash in an open circuit to produce an aqueous slurry of ore; b) subjecting the slurry to a collective flash flotation step in the presence of soda ash and sodium sulphide to recover a first part of metal sulphide minerals of the ore in the form of a first concentrate; c) subjecting the tailings of the collective flash flotation step to a grinding step and to a collective rougher flotation step to recover a second part of metal sulphide minerals of the ore in the form of a second concentrate; and d) subjecting the concentrate of the collective flash flotation step and the concentrate of the collective rougher flotation step to a selection step to separate molybdenite from the other metal sulphide minerals of the concentrate.