INTEGRATION PROCESSES OF THE TREATMENTS OF ZINC SILICATE CONCENTRATES OR ZINC SILICATE ORE AND ROASTED CONCENTRATES OF ZINC SULPHIDES

摘要

The invention refers to the many ways of integrating and joining the processes for treating ore and silicate concentrates of zinc with the product of the sulphide roaster in the zinc industry. These processes include: (i) Use of concentrated raw or ore zinc silicates, from several mineral sources, which are leached with the calcine from the zinc sulphide roaster in Neutral leaching. (ii) Use of concentrated raw or ore zinc silicates, from several mineral sources, interlinked with the treatment of the zinc sulphide roaster calcine, in Acid leaching of Ferrites and Iron Precipitation. (iii) Use of concentrated raw or ore zinc silicates, from several mineral sources, interlinked with the treatment of the zinc sulphide roaster calcine in Neutral leaching, after silicate leaching. (iv) Use of calcine (600-900 °C) of silicate concentrates or silicate ores with selective precipitation of zinc in the Magnesium Treatment, and integration with the calcine from zinc sulphide roasters either in Neutral leaching, Acid leaching of ferrites of Iron Precipitation (v to viii) Processes I to IV, as above, adding the step to remove halogens such as fluorides and chlorides.