Enhancement of Efficiency of Low-Hydroxyethylated Alkyl Phenols as Regulators in Selective Flotation of Non-Sulphide Minerals
V. A. Ivanova, G. V. Mitrofanova, T. N. Perunkova
Mining Institute, Kola Science Center, Russian Academy of Sciences, Apatity, 184209 Russia
Keywords: Флотационные реагенты, фосфорсодержащие руды, регуляторы селективной флотации, этоксилаты изононилфенола, растворимость, солюбилизация, эмульгирование, устойчивость растворов, Flotation agents, phosphorus-bearing ore, selective flotation regulators, ethoxylated iso-nonylphenols, solubility, solubilization, emulsification, solution stability
Abstract
The research findings on efficiency of hardly soluble low-hydroxyethylated iso-nonylphenols as regulators of selective flotation are presented. The methods for increasing their solubility are developed, which are based on using unsaturated carboxylic acids as wedding agents for alkaline salts. It is shown that addition of such wedding agents to ethoxylated iso-nonylphenols makes it possible to obtain stable aqueous micellar solutions or emulsions under much lower temperatures, as well as ensures permanence of the process and efficiency of regulating agents in selective flotation of phosphorus-bearing ores with fatty acid collector. Efficiency of the developed methods is proved by in practical application of one of them, which improved ore dressing performance, reduced labor content, energy input and preparation time of solutions, and provided considerable economic effect.
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