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1.. IntroductionCopper extraction from Cu–Fe–S minerals is a pyrometallurgical process that entails obtaining a Cu-concentrate by froth flotation, smelting it to molten high-Cu matte, the conversion of molten matte to molten blister copper, which is finally electrorefined to ultra-pure copper.
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In the flotation experiment of a converter slag (3.7% Cu, cooled in a refractory lined pit) with potassium amyl xanthate as collector, pine oil as frother at pH 8–9, a concentrate containing 44% Cu was obtained with 96 recovery. Co and Ni were also reported in tailings. In principle, copper slag flotation is the same as sulfide ore flotation.
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Reverbetory furnace slag Copper recovery Flotation Milling and grinding ABSTRACT Namibia Custom Smelters (NCS) process a range of copper concentrates in their three furnaces, namely; top submerged lance, copper converter and reverberatory furnaces, in order to produce mattes and fayalitic slags. The copper content of the …
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Results of the flotation of converter slag were presented, and the effect of the combined flotation of slags with the ores on the recovery of copper was also evaluated. The recovery of the useful metals from the gangue, obtained as a result of the flotation process of pyrometallurgical copper slag, was discussed by ( Oprea and …
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The flotation of copper slag can effectively recover copper, without recycling other valuable metals in the copper slag. However, this process requires a much higher water content and offers relatively low environmental benefits.
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The report describes laboratory batch flotation tests conducted on copper converter slags to evaluate the relative merits of recovering copper from slow-cooled versus water-quenched slags. Three slags containing 1.6, 5.0, and 6.6 percent copper were used.
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1.3 Aims and Objectives Ø To study the mineralogical composition of the different slags which form the feed to the slag milling and flotation plant. The slags are (i) Top Submerged Lance Furnace slag (ii) reverberatory furnace slag (iii) copper converter slag (iv) final flotation plant tailings.
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Namibia Custom Smelters (NCS) process a range of copper concentrates in their three furnaces, namely; top submerged lance, copper converter and reverberatory furnaces, in order to produce mattes and fayalitic slags. The copper content of the slags range between 0.8 to 5 wt. % and this is considered …
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Decreasing copper content in slag is critical for improving copper recovery, where apparent viscosity is the main factor affecting the separation of matte/copper from the slag. The viscous behavior of copper converter slag was investigated during reduction process in this paper, and its non-Newtonian viscous behavior and shear thickening …
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