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Apatite ore is a source of phosphorus for the mineral fertilizers production, and one of the most demanded raw materials for today. The growth of processed raw materials increases the volume of stockpiled processing waste. Such secondary mineral deposits are of interest as a potential object to be involved into processing. The paper studies apatite-nepheline processing waste stored in tailing dumps during different temporal periods. The authors have performed a mineralogical and chemical analysis of stored waste s...

Oxyethylated compounds are used as reagents-regulators in the flotation of non-sulfide ores, in particular, apatite ores. Thus, the necessary degree of selectivity in the flotation separation of two calcium minerals of apatite and calcite is achieved only by using, in addition to a collector, regulators-reagents from the nonylphenol ethoxylates class. In order to establish the most optimal structures, this paper presents a comparative assessment of the physical-chemical and flotation properties of several classes ...