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Showing papers in "Minerals Engineering in 2014"


Journal ArticleDOI
TL;DR: In this article, the chemistry of different solvent extractants and typical configurations for rare earth separations are reviewed. But the choice of extractants is influenced by both cost considerations and requirements of technical performance.

947 citations


Journal ArticleDOI
TL;DR: In this article, a review broadly examines current theoretical understandings and prevalent industrial practices on treating fine mineral tailings for greater water recovery and reduced environmental footprint of mining operations, and concludes that long-term storage of such fluid waste materials not only incurs a huge operating cost, but also creates substantial environmental liabilities of tailings ponds for mining operators.

264 citations


Journal ArticleDOI
TL;DR: The double layers appear to play a role in the formation of stable nanobubbles providing a repulsive force, which prevents inter-bubble aggregation and coalescence.

203 citations


Journal ArticleDOI
TL;DR: A review of published articles addressing the effect of saline water on the interfacial phenomena taking place in the flotation process, such as surface wettability, bubble-particle collision and attachment, mineral particle interactions and frothing, can be found in this paper.

146 citations


Journal ArticleDOI
TL;DR: In this article, the flotation separation of muscovite from quartz was investigated using mixed sodium oleate/dodecylamine acetate (NaOL/DDA) collectors.

134 citations


Journal ArticleDOI
TL;DR: In this paper, the application of microwave radiation as an alternative energy source for the drying of a sub-bituminous coal was investigated, and the drying data were fitted to ten exponential decay models, and although reasonable agreement was observed with all the models, the best fit was obtained with the Midilli-Kucuk model.

106 citations


Journal ArticleDOI
TL;DR: In this article, a survey of the comminution energy requirements of gold and copper producing mines has been conducted to provide reliable benchmarking data which can be used to compare the energy consumption across different mine sites.

102 citations


Journal ArticleDOI
TL;DR: In this article, the extraction of lithium by means of the chlorination roasting of β-spodumene has been studied in the temperature range from 1000 to 1100 °C for periods of time from 0 to 180 min.

101 citations


Journal ArticleDOI
TL;DR: In this paper, the effect of mixing anionic collectors (sodium oleate, hydroxamic acid, D2EHPA) with nonionic reagents on the selective separation of Ca minerals was studied.

92 citations


Journal ArticleDOI
TL;DR: In this article, the authors used the Milli-Timer apparatus to directly observe the process of particle-bubble interaction and attachment by means of a magnified, high-speed video recording, thus providing a direct measure of the induction period for attachment.

89 citations


Journal ArticleDOI
TL;DR: In this article, the authors provide a breakdown of operating costs in 63 mines by dividing them into three main categories: mining, milling, and general and administrative (G&A) costs.

Journal ArticleDOI
TL;DR: In this paper, the authors used electrophoretic and electroacoustic zeta potential measurements to identify the interaction between bastnasite and several different collectors and compared the results of these measurements were then compared with micro-flotation of bituminite and quartz, a common rare earth gangue mineral.

Journal ArticleDOI
TL;DR: In this paper, a study of the separation of rare earth elements (REE) from heavy REE concentrate through solvent extraction is described, where seven extractants were investigated: three organophosphorus acids (DEHPA, IONQUEST®801 and CYANEX®272), a mixture of DEHPA/TOPO (neutral ester) and three amines (ALAMINE®336, ALIQUAT®336 and PRIMENE®JM-T).

Journal ArticleDOI
TL;DR: In this article, the authors presented a numerical study of cyclones with different conical configurations by a recently developed computational fluid dynamics method, and the numerical results showed that the cyclone performance is sensitive to both the length and shape of the conical section, as well as the feed solids concentration.

Journal ArticleDOI
TL;DR: In this article, the relationship between the process conditions and the froth features as well as the process performance in the batch flotation of a copper sulfide ore is discussed and modeled.

Journal ArticleDOI
TL;DR: The Carmex project as mentioned in this paper was concerned with the possibility of applying ex situ mineral carbonation concepts to mafic/ultramafic mining wastes, and the main outputs from the multidisciplinary Carmex Project (2009-2012) were focused on the possibility to apply ex situ mining carbonation concept to mining wastes.

Journal ArticleDOI
TL;DR: In this article, the surface characteristics of chalcopyrite and molybdenite were investigated with AFM, XPS, zeta potential and contact angle measurements.

Journal ArticleDOI
TL;DR: In this article, a wide range of applications are reviewed, including; interactions of reagents on the surface of mineral phases during flotation separation, determining the effects of various transferred ions from different minerals or the slurry, evaluation of hydrophobicity, identifying the relationship between mineral surface chemistry and contact angle, and evaluation of grinding effects.

Journal ArticleDOI
TL;DR: In this article, a comprehensive surface charge and rheological analysis was conducted, incorporating their charge anisotropy and non-spherical morphology for the entire phyllosilicate group, categorised as serpentine, micas, talc/pyrophillite, kaolinites, illites, smectites and vermiculite.

Journal ArticleDOI
TL;DR: In this article, chicken manure, dairy manure and sawdust were evaluated as carbon sources in promoting sulfate reduction, and the mechanism of heavy metals removal in sulfidogenic bioreactor was revealed.

Journal ArticleDOI
TL;DR: In this paper, a dual-energy X-ray transmission has been used to sort ore from different mines, and an analysis identifying the economic impact of these results is presented, showing that significant energy savings in milling have been realized, and capital and operating cost advantages to using ore sorting have been identified.

Journal ArticleDOI
TL;DR: The effect of Fe(III) ions on the flotation of spodumene, albite, and quartz minerals using sodium oleate (NaOL) was investigated by micro-flotation tests as mentioned in this paper.

Journal ArticleDOI
TL;DR: In this article, a numerical study of the multiphase flow and performance of hydrocyclone by means of two-fluid model, with special reference to the effects of diameter, length and shape of vortex finder at a wide range of feed solids concentrations.

Journal ArticleDOI
TL;DR: In this paper, the impact of accelerated carbonation on the microstructure and physical properties of fiber-cement composites reinforced with cellulose pulp and synthetic fibers was investigated.

Journal ArticleDOI
TL;DR: In this paper, chemical and mineral transformations of a goethite ore were studied by dehydroxylation, reduction roasting in CO and CO2 gas mixtures, and magnetic separation.


Journal ArticleDOI
TL;DR: In this paper, the results of a combined accelerated carbonation and wet granulation treatment applied to Basic Oxygen Furnace (BOF) steel slag with the aim of producing secondary aggregates for civil engineering applications and of storing CO2 in a solid and thermodynamically stable form were reported.

Journal ArticleDOI
TL;DR: In this article, the differences between the separation of chalcopyrite and chalcocite from pyrite in cleaner flotation after regrinding were investigated, and the mechanism underpinning these phenomena was investigated by a range of techniques including the polarization of mineral electrodes, X-ray photoelectron spectroscopy (XPS) analyses and ethylene diamine tetraacetic acid (EDTA) extraction.

Journal ArticleDOI
TL;DR: In this article, a mixed model mineral system consisting of chalcopyrite (CuFeS2) with varying pyrite content (20-80 wt.%) was used to investigate the effect of pyritic acid on pulp chemistry and copper recovery.

Journal ArticleDOI
TL;DR: In this paper, the authors decouple and estimate the relative magnitudes of slime coatings and pulp rheology effects on the natural floatability of chalcopyrite in a model mineral system.