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Reverse Froth Flotation For Iron Ore

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The invention relates to a reverse froth flotation process for treating a calcium carbonate ore containing silicates. the process comprises the use of two collectors selected from the group consisting of fatty tri-lower-alkyl quaternary ammonium compounds, fatty di-lower-alkyl benzyl quaternary ammonium compounds, fatty lower-alkyl di-benzyl quaternary ammonium compounds, di-fatty di-lower ...

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