use of a mixture as a secondary collector, process for flotation of non-sulphidic ores, and proper collection composition

摘要

The present invention relates to secondary collector mixtures containing at least one compound (I) selected from the group of 12-16 carbon branched fatty alcohols having a branching degree (db) of 1-3.5 and their alkoxylates. with an ethoxylation degree (de) of up to 4, and at least one compound (ii) selected from the alkoxylate group of nonionic hydrocarbon compounds with an ethoxylation degree greater than 3 and carbohydrate surfactants, where, if both compounds (i) and (ii) are ethoxylated alcohols, the mixture has a bimodal ethoxylation grade distribution; the use of compound (ii) as an emulsifier for compound (i) in a liquid; collecting compositions containing the secondary collector mixtures with a primary collector which is an amphoteric or anionic surfactant compound; and the use of the above compositions in a foam flotation process of non-sulfidic ores.