Showing papers in "International Journal of Mineral Processing in 2017"

TL;DR: In this article, a new collector, lead complexes of benzohydroxamic acid, was found to be selective for the separation of scheelite and calcium minerals with little water glass, and a novel flotation process was developed for the recovery of tungsten minerals in Shizhuyuan Mine in China.

TL;DR: In this paper, the effects of two different types of polycarboxylate (PC)-based high-range water reducer (HRWR) admixtures, or superplasticizers (SP), called PC1 and PC2, on the rheological properties of CPB mixtures were assessed.

TL;DR: In this article, the flotation behavior of both ilmenite and titanaugite using anionic collector sodium oleate (NaOL), cationic collector dodecylamine acetate (DAA), and mixed anionic/cationic collector NaOL-DAA was investigated through micro-flotation experiments, zeta potential measurements, Fourier transform infrared (FTIR) analyses, and the artificially mixed minerals flotation experiments.

TL;DR: In this paper, the beneficiation of a low-grade hematite ore fine containing carbonates with magnetization roasting and magnetic separation was proposed and studied, and the effects of roasting temperature, reaction time and coal to ore ratio on the magnetic properties of roasted materials were investigated using a vibration sample magnetometer.

TL;DR: In this article, the authors investigate the time-dependent evolution of the yield stress, strength and deformation behaviour of cemented paste backfill (CPB) that contains Portland cement as the binder with different saline concentrations in a sub-zero environment (−6°C).

TL;DR: In this paper, the physicochemical properties of monazite, hematite, and quartz including zeta potential, contact angle, and floatability were determined in South Australian REE-bearing deposits.

TL;DR: In this paper, the influence of solids content and composition of cemented paste backfill (CPB) on the material's rheological and mechanical characteristics was analyzed. But, the workability of CPB was not evaluated.

TL;DR: In this paper, a dextran sulfate sodium, a medical intermediate rich in sulfate group, was introduced as a potential depressant for calcite and fluorite in scheelite flotation.

TL;DR: In this article, the effect of GOFA on collophanite ore flotation and the mechanism of adsorption were studied. And the results showed that Ca 2+ is the active site for reaction with GOFA and initiates apatite flotation.

TL;DR: In this paper, the role of different process variables of RERMS and IRMS to separate the hematite fines from a low-grade ore was investigated. And the effect of each variable on hematites segregation in these units were discussed, and optimum process conditions were derived for the efficient recovery of hematitic fines from the low grade ore. The separation efficiency of these separators is compared with liberation data obtained from QEMSCAN.

TL;DR: In this paper, the effect of filling interval time (FIT) on the uniaxial compressive strength (UCS) and ultrasonic pulse velocity (UPV) of cemented coarse tailing backfill (CCTB) was investigated.

TL;DR: In this paper, column and block experiments are conducted to investigate the coupled evolutions of the main performance characteristics (thermal, hydraulic and mechanical) of CGFB structures, and a test apparatus is designed and equipped to investigate thermal (temperature development), hydraulic (water drainage) and mechanical (lateral expansion) performances of columns under pressure in drained and laterally constrained conditions.

TL;DR: In this paper, an evaluation of the possibility of using Class C fly ash for the synthesis of faujasite and tschernichite (Type A) type zeolite materials was presented.

TL;DR: In this paper, the effect of H3PO4 on apatite and dolomite flotation was investigated using both single and mixed mineral flotation, and it was shown that H2PO4− reacts with free Ca2+ to depress the acidolysis of apatites and promote the formation of aqueous CaHPO4.

TL;DR: In this paper, the possibility of extraction of rare earth elements cerium (Ce), lanthanum (La), neodymium (Nd) and thorium (Th) from a monazite concentrate containing 25% rare earth element's oxide was investigated.

TL;DR: In this article, an alternative process for the recovery of valuable materials from spent lithium ion batteries was described, using mechanical processing and electrostatic separation, and the results showed recovery of a conductive fraction containing 98.98% of metals and a nonconductive fraction including 99.6% of polymers.

TL;DR: A mathematical model was constructed that is suitable for the recognition of coal and gangue based on this theory, while algorithms of recognition threshold values and identification rate are presented.

TL;DR: In this paper, N-carboxymethyl chitosan (N-CMCh) was used to limit the detrimental effect of serpentine on the flotation of pyrite.

TL;DR: In this article, the effects of mechanical activation on the microstructure of olivine and mine waste were analyzed using the Rietveld method, and it was found that, as a result of the mechanical activation, particle size was decreased, surface area was increased, crystallite size was reduced and micro-strain was accumulated.

TL;DR: A review of coal chemical-related desulfurization methods for both inorganic and organic sulfur can be found in this article, where the authors highlight the developments in coal chemical related desulurization, including acid/alkaline leaching, H2O2 oxidation, electrochemical reduction, solvent extraction, pyrolysis, air oxidation, microwave/ultrasonic assisted desulfURization in the past decade.

TL;DR: In this article, the influence of 2-ethylhexanol used as a modifier/emulsifier on the surface chemical property of low-rank coal and its flotation performance was investigated.

TL;DR: In this article, the influence of acid surface dissolution as a pretreatment method on the improvement of ilmenite selective flotation from olivine-pyroxene was studied by carrying out the flotation experiments in micro and laboratory (flotation cell) scales.

TL;DR: In this article, the conditions required for selective flotation between smithsonite and dolomite using sodium oleate and sodium silicate were determined, and it was shown that the predominant species of oleates and of sodium silicates were adsorbed onto both minerals, and the silicate species prevented the adsorption of o oate anions onto dolmite.

TL;DR: In this article, phase transformations performed for synthetic and natural hematite by reduction involving various carbohydrates (starch, glucose, fructose, sucrose, and ascorbic acid) were carried out using a laboratory facility that allows the automatic registration of a sample's magnetization as the temperature changes.

TL;DR: In this article, the effect of the initial sulphate content of the CPT on its reactivity is experimentally investigated by conducting oxygen consumption (OC) tests on CPT specimens.

TL;DR: In this article, a combined mechanical-biological approach was proposed to produce soluble phosphate by cultivation of a selected strain of Aspergillus niger using rock phosphate (RP) with particle sizes in the nanometric range.

TL;DR: In this paper, raw and organically modified diatomaceous earth was used to remove U(VI) and Th(IV) ions from aqueous solution using the batch method.

TL;DR: In this paper, the flotation behavior of scheelite and calcite using oxidized paraffin soap (OPS), benzohydroxamic acid (BHA) and the mixed OPS/BHA collectors was investigated through micro-flotation experiments.

TL;DR: In this paper, the effect of mechanical activation on the atmospheric pressure leaching of a lateritic nickel ore was investigated to develop a superior alternative, and the results showed that accelerated leaching kinetics and less sulfuric acid consumption were the most beneficial effects of mechanical activations.

TL;DR: In this paper, a new oxalic acid and hydrogen peroxide based extraction process was developed to recover valuable metals - in particular Ga and Ge - from the zinc refinery residues, which achieved the selective leaching of metals in the residues.