Carboxylic acid method

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In flotation, a method for treatment of various oxygen ores using carboxylic acids as collectors with gangue depressants to float base-metal minerals from associated impurities. The process is suitable for processing apatite (phosphate), carbonates or oxides of lead, copper, or zinc; somewhat less useful with other lead minerals and with hemimorphite; and unsuitable for chrysocolla.
Source: Dictionary of Mining, Mineral, and Related Terms

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