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Flotation is widely used in gold processing In China 80 rock gold is processed by flotation Flotation process maximizes the enrichment of gold into sulfide minerals

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In normal practice this machine appears as a long tank like vessel having a number of impellers in series Mechanical machines can have open flow of pulp between the impellers or can be of cell to cell design with weirs between them Below is a typical bank of flotation cells used in industrial practice

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Flotation columns are tall cells where air is com monly injected at the base using a sparging system and pulp is fed in near the top of the column Dobby Finch 1991 Filippov et al 2000

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Flotation tests were conducted on a 60 l forcedair flotation cell and a bank of four 150 l inducedair flotation cells over a range of impeller speeds air flow rates and feed types

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Schematic diagrams showing the principle of froth flotation and total function inside a flotation cell The mineralized froth concentrate stabilizes for a while at the top of the cell Fig 13 36 overflows and moves to a cleaner cell filter and dryer in sequence to form mature saleable product for smelting to produce pure metals

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