Journal Article10.1016/J.MINENG.2020.106647
Flotation of hematite using 18-carbon fatty acids
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TL;DR: In this paper, it was shown that commercially available mixtures of 18-carbon unsaturated fatty acids are suitable flotation reagents for use in the recovery of oxide minerals giving high mineral recoveries, but there appeared a controversy between the higher collecting power of the surfactants with an increasing number of double bonds/molecule and their associated increased hydrophilic character and susceptibility to oxidation.
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About: This article is published in Minerals Engineering. The article was published on 01 Jan 2021.
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Citations
Electrokinetic measurements in aqueous solutions of weak electrolyte type surfactants
Janusz S. Laskowski
- 01 Jan 1993
TL;DR: In aqueous solutions of weak electrolyte surfactants, such as fatty acids and long chain aliphatic amines, either ionized or molecular forms predominate depending on pH as discussed by the authors.
26
Synergetic effects of fatty acids in amazon oil-based collectors for phosphate flotation
Leandro Henrique Santos,Adriele Mércia Alves Santos,Luciano Fernandes de Magalhães,Tamíris Fonseca de Souza,Gilberto Rodrigues da Silva,Antonio Eduardo Clark Peres +5 more
TL;DR: In this paper , the authors evaluated the relationship between physicochemical properties (acid profile, acidity, saponification, and iodine indexes) and their performance as apatite, calcite and dolomite collector in comparison to sodium oleate and sodium palmitate.
5
Effect of Carboxyl Group Position on Assembly Behavior and Structure of Hydrocarbon Oil–Carboxylic Acid Compound Collector on Low-Rank Coal Surface: Sum-Frequency Vibration Spectroscopy and Coarse-Grained Molecular Dynamics Simulation Study
Zechen Liu,Xian-Shu Dong,Yin-Yan Liao,Yuping Fan,Yijun Cao +4 more
TL;DR: The carboxyl group position on hydrocarbon oil–carboxylic acid compound collector significantly affects its assembly behavior and structure at the low-rank coal–water interface. The carboxyl group at the carbon chain’s middle is more effective in controlling the assembly process, while the carboxyl group at the carbon chain’s termination has a greater impact on the displacement of symmetric and asymmetric stretching vibration peaks.
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References
The use of zeta potential to investigate the interaction of oleate on hematite
TL;DR: In this article, the authors investigated how the use of zeta potential measurements on the hematite-oleate system as a function of pH could provide additional information on this system.
Use of conditioning time to investigate the mechanisms of interactions of selected fatty acids on hematite Part II laboratory investigations
TL;DR: In this paper, the effects of conditioning time on the flotation of hematite using three technical grade fatty acid reagents as providing additional evidence on their mechanism of interaction with the hematitic surface.
An investigation of the flotation minimum in the oleate flotation of hematite under alkaline conditions
TL;DR: In this paper, the effects of pH on the flotation of a natural hematite sample using two collectors containing oleate and compare these data to changes in surface tension and bubble characteristics of aqueous Oleate systems also as a function of pH.
Surface chemistry and oleate flotation of three South Australian micaceous hematites
TL;DR: In this article, the surface chemistry and oleate flotation characteristics of three South Australian micaceous hematites (Warrakimbo, Williamstown and Iron Knob) have been examined using zeta potential, surface titration and OE techniques.