Showing papers in "Minerals Engineering in 2013"

TL;DR: The only rare earth bearing minerals that have been extracted on a commercial scale are bastnasite, monazite, and xenotime, and these minerals may be beneficiated using gravity, magnetic, electrostatic and flotation separation techniques as discussed by the authors.

TL;DR: In this paper, the authors discuss commercially available and emerging methods for removing cyanide from waste streams, particularly from tailings and tailings reclaim waters that are generated in the gold mining processes.

TL;DR: A review of these processes and their development timeline was presented in this article, where a flowsheet to recycle mixed stream LiBs, and NiMH battery scrap was proposed based on these results, and the results showed that applying these processes reduces the volume of LiBs and NiH scrap, liberates their valuables, reduces the need for leachate purification in hydrometallurgical process, and facilitates the decomposing of battery's electrolyte.

TL;DR: In this paper, four different starches, namely soluble starch, corn starch, potato starch and rice starch with different characteristics have been studied as depressants for hematite in cationic flotation using dodecylamine as the collector.

TL;DR: A review of the existing studies on water quality variation in flotation is given in this article, with which these studies were categorized and structured based on the three aspects, and a framework was developed to identify gaps and future research directions.

TL;DR: In this article, a mathematical model is developed to predict and assess the evolution of the rheological properties of CPB under the coupled effects of temperature and progress of binder hydration.

TL;DR: In this paper, the adsorption of dodecylamine acetate (DAA), sodium oleate (NaOL) and DAA-NaOL mixtures on muscovite mica were investigated through flotation tests, zeta potential measurements, and pyrene fluorescence tests.

TL;DR: In this paper, the possibility of using electrodialysis for the treatment of acid mine drainage generated from coal mining to recover water is investigated, which is suitable for recovering water from acid mine drainages, with contaminant removal efficiencies that are greater than 97%.

TL;DR: In this article, cyclohexyl hydroxamic acid (CHA) was investigated as a new collector for scheelite flotation by the Density Functional Theory (DFT) calculation, mineral flotation tests, adsorption measurement and zeta potential determination.

TL;DR: In this article, the distribution coefficients of arsenic, zinc and lead among the products, and as a result of flue dust addition, oxygen enrichment and temperature, were determined, allowing to determine impurities in blister copper which affect the quality of cathodic copper produced.

TL;DR: In this paper, the clathrate formation between molecules of amine and starch may explain the increase of SiO 2 content in the concentrates of the coarse size range (−150 + 45μm) due to an increase in amine dosage.

TL;DR: In this paper, a mechanistic model of the ball mill has been proposed, and its application in the simulation of batch mills operating under a range conditions is described, and first-order breakage rates have been estimated using data from these simulations, and used to investigate the effect of operating and design variables in milling.

TL;DR: The simplest and least capital intensive of the possible alternatives to HPAL is atmospheric heap leaching as mentioned in this paper, which is also a potentially viable alternative for lower grade nickel laterites ores.

TL;DR: In this article, a cyclonic-static micro-bubble flotation column (FCSMC) was developed for mineral separation, particularly for whole flotation circuits, which featured multiple mineralisation steps, including countercurrent mineralisation, cyclone mineralisation and pipe flow mineralisation in a single column, through which the mineralisation energy, mineralisation rate and dynamic turbulence intensity gradually increased to compensate for the decrease in the floatability of mineral particles.

TL;DR: In this article, the extraction of Mg from lizardite using magnesium bisulphate has been studied as a function of temperature, reagent concentration, solid to liquid ratio, thermal and mechanical pre-activation.

TL;DR: In this paper, the influence of silver ions (Ag + ) on the bioleaching of cobalt from spent lithium batteries using acidithiobacillus ferrooxidans ( A. ferrooxideidans ) bacteria was investigated.

TL;DR: In this paper, mine waters obtained from coal mining operations in South Africa were used as a substitute for pure water during the synthesis of zeolites from South African coal fly ash.

TL;DR: In this article, the acidized water glass (AWG) was used as a depressant for the substitution of soda ash plus sodium lignosulfonate (SLS) in fluorite flotation.

TL;DR: In this paper, a series of molecular dynamics simulations have been performed employing PCFF_phyllosilicates force field and the interaction energies between water molecules/ammonium ions and the muscovite (0.0.1) surface are computed.

TL;DR: In this article, a texture feature extraction method based on color co-occurrence matrix (CCM) is presented compared to the commonly used gray level cooccurrence matrices (GLCM) to obtain the distinctive characteristic of the froth surface appearance under various production conditions.

TL;DR: In this article, a super absorbent polymer (SAP) was used to dewater the fine tailings of the Canadian oil sands to increase the strength and solid content of the extracted bitumen.

TL;DR: In this paper, the authors reported the simulated and measured outcomes of treating a well characterised ore in a 1.2 m diameter mill at the University of KwaZulu-Natal.

TL;DR: In this paper, the pH modifier, collector and frother have been used to alter the rheological properties of kaolinite and bentonite suspensions in copper-gold flotation.

TL;DR: In this article, the authors measured froth thickness in a modified laboratory flotation cell as a function of pH, salinity, frother type, and solids content, and found that foamability in two-phase systems was better in sea water than in fresh water.

TL;DR: In this article, a method based on single-particle tests has been developed to characterise the pre-weakening effect of high voltage pulses on ores, which is used to evaluate the energy efficiency of an electrical comminution machine, and to assess an ore's amenability to preweakening by high-voltage pulses.

TL;DR: In this paper, the first step in establishing a geometallurgical program for the Malmberget iron ore deposit, northern Sweden, was taken, based on the first-order geometry.

TL;DR: In this article, a series of nickel laterite ores with different calculated amounts of anhydrous sodium sulphate were prepared by physical blending or sodium sulfate solution impregnation.

TL;DR: In this article, computer modeling and the microcalorimetry method were employed to investigate the adsorption of xanthate, dithiophosphate (DTP) and dithioxioxymethylcarbamate (DTC) on the galena and pyrite surfaces.

TL;DR: In this paper, the remaining useful life of a mill liners is discussed. But, the authors focus on the maintenance of the liners, not the operation of the mill, so that the maintenance engineer can enter, measur...

TL;DR: In this paper, the fundamental aspects of apatite and quartz flotation using Rhodococcus opacus bacteria as a bioreagent were investigated using a rotary shaker under specific conditions such as particle size, biomass concentration, pH solution and conditioning time.