Increasing the contrast of flotation of finely disseminated calcium-bearing ores by using of combination low polar compounds and fatty acid collector, V.A. Ignatkina, E.D. Shepeta, L.A. Samatova, A.V. Lygach, and D.D. Aksenova
- Organization:
- The Southern African Institute of Mining and Metallurgy
- Pages:
- 12
- File Size:
- 718 KB
- Publication Date:
- Jan 1, 2020
Abstract
Calcium minerals such as scheelite, phosphate, apatite are valuable minerals, which have similar
flotation properties to the calcium gangue minerals. An additional problem is the fine dispersion and
close mineral association of valuable and other minerals.
Low polar compounds (non-ionic surfactant), such as fatty iso alcohols, neonol and phosphol, and
their combinations with sodium oleate have been studied using flotation of monominerals and ore
flotation; ATR IR spectroscopy and TEM for study surface of minerals; UV spectroscopy for control
solubility, aggregation and de-aggregation processes. Increase in solubility of fatty acid collectors was
confirmed by low soluble (heteropolar) compounds. Oxyethylated esters of phosphoric acid are
adsorbed on phosphorite by -O2PO2R2 and on other rock minerals by donation of OH bond. Same effect
shows difference of adsorption of fatty iso alcohols on calcite and scheelite. The different forms of
adsorption of ionic and nonionic compound on a sparingly-soluble mineral surface creates distinction
of the flotation kinetics and technological balance of ore flotation. The results of the separation of
flotation of scheelite from calcite depend on the order of pouring into pulp of fatty iso alcohols and
oleate, and their ratio in the mixture.
Increasing scheelite recovery into rougher scheelite concentrate by 3.6% for both the flotation
and sludge classes was obtained. Calcite recovery varied slightly upwards or downwards by 0.8-2.4%.
The use of the non-ionic surfactant phosphol in combination with a fatty acid soap allows for
obtaining a phosphate concentrate with more than 28% P2O5 content and almost 80% recovery in
flotation operation. It is not obtainable with other reagent regimes.
Keywords: Flotation, calcium minerals, oleate, fatty isoalcols, neonol, oxyethylated esters, adsorption
Citation
APA: (2020) Increasing the contrast of flotation of finely disseminated calcium-bearing ores by using of combination low polar compounds and fatty acid collector, V.A. Ignatkina, E.D. Shepeta, L.A. Samatova, A.V. Lygach, and D.D. Aksenova
MLA: Increasing the contrast of flotation of finely disseminated calcium-bearing ores by using of combination low polar compounds and fatty acid collector, V.A. Ignatkina, E.D. Shepeta, L.A. Samatova, A.V. Lygach, and D.D. Aksenova. The Southern African Institute of Mining and Metallurgy, 2020.