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Polyester polyquaternary ammonium compound collectors for reverse froth flotation of silicates from nonsulfidic ores
Polyester polyquaternary ammonium compound collectors for reverse froth flotation of silicates from nonsulfidic ores
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机译:聚酯聚季铵盐化合物捕收剂,用于从非硫化矿石中逆向浮选硅酸盐
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摘要
The present invention relates to a compound obtainable by the condensation of a polyol having 3-4 hydroxyl groups, adicarboxylic acid or a derivative thereof, an alkanolamine and a fatty acid, followed by reaction with an alkylating agent. This compound is useful as a collector in a process for the reverse froth flotation of non-sulfidic ores containing silicate as impurities, especially phosphate ores.
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