Showing papers in "International Journal of Mineral Processing in 1983"

TL;DR: In this article, the authors present a detailed literature review of the physical-chemical and process engineering principles of oil agglomeration, a comparative summary and specific process highlights of the more developed oil aggloomeration processes, and a critical evaluation of the oil aggregation in terms of selection of oil, process benefits and economic aspects.

TL;DR: The reverse flotation method most commonly applied is the one that is based on cationic flotation of silica and silicates (reverse flotation), and which is preceded, or not, by desliming or selective flocculation as mentioned in this paper.

TL;DR: In this paper, the effects of phosphate modifiers on the solubility of calcium minerals in water, on the surface charge of the minerals and on the adsorption of the phosphates and of sodium oleate on the mineral surface were examined.

TL;DR: In this article, the effects of Na2SiO3, Na3PO4, Na4P2O7, (NaPO3)6, quebracho, tannic acid and S 808 (sulphonated product of rough phenantrene) on the floatability of the following pure minerals: scheelite, calcite, fluorite, garnet and quartz, with sodium oleate as collector were investigated in detail as well as the role of pH on these effects.

TL;DR: In this article, the authors used a batch flotation cell to determine the bubble size distributions and flotation rates as a function of air flow rate and frother concentration using a specially designed batch-flotation cell, which allowed the unambiguous determination of the flotation rate from the slurry to the froth.

TL;DR: In this article, the authors have made a study on the separability of clay minerals such as kaolinite, illite and montmorillonite from hematite in dispersant-starch flocculant systems.

TL;DR: In this paper, the linearity assumption is used to prove a number of theorems, useful to both the plant designer and the plant engineer, which can be proven in the presence of particle-particle interaction.

TL;DR: In this article, a review article discusses the existing and potential applications of a variety of spectroscopic techniques to determine the interactions between minerals and reagents in flotation systems and finds that infrared spectroscopy is the most successful and relevant data in the literature is critically evaluated.

TL;DR: The flotability of chalcopyrite in the absence of conventional collectors and its dependence on the oxidation-reduction state of the system has been determined in batch flotation tests on high-grade mineral both alone and mixed with quartz.

TL;DR: In this article, the dewatering of sand washing slimes, a kimberlite slime, and a tin extraction tailing were dewatered by electro-osmosis at up to 50V starting potential to produce a spadeable consistency at a low electrical energy input, equivalent to 0.5-15 kilowatt-hours per tonne of starting sediment.

TL;DR: In this article, the authors compared the performance of countercurrent and cocurrent flotation circuits and found that countercurrent circuits were superior to cocurrent circuits in all respects, including feedback loops and sump delays.

TL;DR: In this paper, the authors investigated the flotation rate of galena as a function of air flow rate and froth thickness (from 0 to 6 cm) in a batch flotation cell designed to produce a quiescent froth-liquid interface.

TL;DR: In this article, the adsorption of octyl hydroxamate on electrolytic manganese dioxide was investigated using an infrared spectroscopy and Hallimond tube flotation.

TL;DR: In this paper, the principal methods of decomposition of dixanthogen are by simultaneous attack of OH − ions on the sulphur-sulphur bond to give products which include xanthate ion (ROCSS − ) and peroxide (H 2 O 2 ).

TL;DR: The technique of electrochemical flotation has been used to separate chalcocite from molybdenite as discussed by the authors, and the recovery of chalocite is affected by the rate of oxidation, as controlled by the change in sweep rate.

TL;DR: In this article, the kinetics of dissolution of natural enargite in ammoniacal solution have been investigated and it was shown that the rate of dissolution is favored by high temperatures and high oxygen pressures.

TL;DR: In this article, a simple kinetic theory model is used to model the separation process in a "falling curtain" of particles and the separation distance between two different minerals is calculated.

TL;DR: The general method of optimization of mineral processing circuits is shown in closed form and it is proven that optimum grade and recovery do not coincide.

TL;DR: In this paper, the benefits of direct reduction of Ramim iron ore were studied, where feed concentrates were obtained by gravity concentration of oolites followed by wet, high-intensity magnetic separation.

TL;DR: In this paper, an equation has been proposed for the extraction of isotherms of uranium from an acid heap leach liquor, based on the theory of extraction by amines.

TL;DR: Anionic and cationic flotation of a Stillwater complex chromite was studied as a function of pH and various pretreatments of the mineral in this article, showing that aging the ground mineral in air markedly decreased anionic (sodium dodecylsulfate) flotation below pH 3 and enhanced it above pH 4-5.

TL;DR: Batch flotation tests on low- and high-rank Australian coals showed that it was difficult to reduce the original ash yield substantially whilst maintaining high recovery as mentioned in this paper, and the ash yield of the flotation concentrates was mainly the result of the recovery of composite coaly grains containing both carbonaceous matter and mineral matter.

TL;DR: The main tools used are those of network topology and numerical linear algebra for the assessment of alternative experimental designs for sensitivity to experimental error, and the choice of insensitive methods of data reduction.

TL;DR: A commercial laboratory flotation machine (Denver Model D-12) has been automated for ease of operation and reproducibility as discussed by the authors, which includes two plexiglass cells of 4 and 2-1 capacity, respectively, an electronic level controller and an air flow rate controller.

TL;DR: In this paper, the effects of aeration rate, slurry flow rate, stirring rate, pulp density, and particle size on the residence time distribution of a solid in a continuously operated flotation cell under non-flotation conditions (no frother, no concentrate removal) have been examined.

TL;DR: In this article, the adsorption of sodium dodecyl sulphate (DSNa) on the surface of calcium fluoride and fluorite was investigated by means of internal reflection spectroscopy in the infra-red range of the spectrum.

TL;DR: In this paper, it is inferred that as a consequence of grinding prototropy takes place in some of the clay hydroxyls, supported by water losses results at 600°C.