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Showing 1 to 20 of 22 for “"Platreef"”.
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The effect of recycle water quality on the flotation of a Platreef ore
… specific ions and their concentrations on the Platreef ore. With the depletion of the Merensky and UG2 ore, mining houses are shifting their attention to the Platreef ore as an alternative platinum group metal resource. The timing of this project therefore becomes critical as new Platreef mines …
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Base metal heap and tank leaching of a platreef flotation concentrate using ammoniacal solutions
… feasibility of the ammonia leaching process of a Platreef flotation concentrate was investigated in different reactor settings i.e. shake flasks, columns and batch stirred tank reactors, respectively. The process investigated aims to use either a heap leaching environment or tank leaching of …
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An investigation of cyanide-based heap leaching for extracting precious metals from Platreef ore
… processing platinum group metals (PGMs) from the Platreef ore body. Overall the process includes two stages of leaching. The first stage involves the thermophile bioleaching of the base metal (BM) sulphide minerals and acts as a form of pre-treatment to oxidise sulphur compounds and recovery …
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Investigating the use of sodium silicate to improve the flotation performance of Platreef and UG2 PGE ores
… silicate influences the flotation response of Platreef ore, batch flotation tests were performed at five different sodium silicate dosages in the range 0 g/t (baseline condition) to 2000 g/t sodium silicate on the secondary grind (80% passing 45 µm) using sodium metasilicate of modulus 1. For …
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Development of the Platreef in the northern limb of the Bushveld Complex at Sandsloot, Mokopane District, South Africa
The Platreef is a Ni-Cu-PGE mineralised tabular body at the base of the Rustenburg Layered Suite in the northern limb of the Bushveld Complex. The reef lies unconformably on a footwall (floor) sequence of Transvaal Supergroup sedimentary rocks and Archaean granite/gneiss basement, and is overlain …
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Assessing the extent of local assimilation within the Platreef, Northern Limb of the Bushveld Igneous Complex, using sulfur isotopes and trace element geochemistry
… primary mechanism of PGE mineralization in the Platreef was no different than the mechanism that generated the Merensky Reef in the Eastern and Western limbs of the BIC.
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Surface characterisation and flotation behaviour of the platinum and palladium arsenide, telluride and sulphide mineral species
The Platreef is located in the northern limb of the Bushveld Complex of South Africa. This reef consists of a complex assemblage of rock types, with pyroxenites, serpentinites and calcsilicates being the most abundant. The predominant PGMs are the tellurides, arsenides, alloys and sulphides. The Pt …
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Effect of HPGR on platinum bearing ores and the flotation response as compared to the conventional ball mill
… on platinum bearing ores Merensky, UG2 and Platreef. Conventional tumbling mills such as the ball mill that are typically applied on these ore types are highly energy intensive with a small percentage of the input energy being used for actual breakage. Rapidly increasing energy costs have …
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A study of the flotation behaviour of Pt and Pd tellurides and arsenides
The Platreef situatedin the Limpopo province of South Africa constitutes a significant source of PGEs in the world. Of the various PGE bearing minerals in the Platreef, PGE tellurides are the most abundant, occurring in excess of 30% in terms of PGM relative abundance, followed by PGE arsenides at …
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An electrochemical investigation of platinum group minerals
… namely, the Merensky reef, UG2 reef and the Platreef. Platinum and palladium are the most abundant PGEs found in the Bushveld complex. They occur in the form of minerals/mineral phases with elements such as sulphur, tellurium, arsenic and iron. These minerals/mineral phases are associated …
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Structural and electrical characterisation of silicon and other semiconducting nanoparticle networks for use in sensor and photovoltaic applications
… of a sequential heap leach in low grade Platreef ore in order to recover PGMs (Platinum Group Metals), by a pure hydrometallurgical route. This method comprised of two stages, an initial thermophile bioleach stage to extract base metals followed by a cyanide leach to recover precious …
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Formation of thiocyanate in bioleaching residues and its effect in PGM recovery
… of a sequential heap leach in low grade Platreef ore in order to recover PGMs (Platinum Group Metals), by a pure hydrometallurgical route. This method comprised of two stages, an initial thermophile bioleach stage to extract base metals followed by a cyanide leach to recover precious …
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An investigation into the floatability of platinum group arsenides and tellurides under varying collector and solution chemistries
… abundant platinum group minerals (PGM) in the Platreef ore deposit. It has been found that there are major losses of these minerals during flotation, with most of the losses attributed to sperrylite (PtAs2). This study has investigated the use of collectors with greater electron-donating …
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Removal of zinc from a base-metal solution using ion exchange at Rustenburg Base Metal Refiners.
… to the zinc problem was the fact that more Platreef ore, with higher zinc levels, was being mined. These factors indicated that a dedicated zinc removal section was required to ensure a sustainable nickel cathode production containing less than 50 ppm zinc.
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Rheological effects on gas dispersion in a pilot scale mechanical flotation cell
… was conducted using kaolin, Bindura nickel and Platreef slurries. All three ores displayed typical non- Newtonian rheological behaviour where the slurry yield stress and viscosity increased exponentially with solids concentration. Bubble size varied from 0.55 to 1.10 mm for all the ores tested. …
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The use of sulfide mineral chemistry to understand PGE mineralization processes in the Northern Limb of the Bushveld Igneous Complex
The Platreef is a complex lithological unit defining the base of the Northern Limb of the Bushveld Igneous Complex (BIC) and typically characterized by complex magma-footwall interaction. It is of interest primarily because it contains significant PGE-Ni-Cu mineralization and there is no consensus …
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Developing a ball mill model that incorporates grate and overflow discharge configurations
… size under similar operating conditions using platreef ore which is classified as rheologically complex. The results from this investigation were used to develop a ball mill model that incorporates discharge mechanism and variables that influence mill power draw and product size distribution. …
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A multi-isotopic geochemical investigation of the Lower Zone, Bushveld Complex, South Africa: implications for a crustal component for parental magmas
… published data for the Critical Zone and the Platreef, the only previous Re-Os studies on the Bushveld. However, there are no previously reported negative Osi values for the Bushveld. The range in Osi values for the NG2 samples suggest mixing of at least two geochemical reservoirs. In …
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The influence of slurry viscosity on hydrocyclone performance
… (75,100, 165 mm), with two different ore types (platreef ore, copper ore) from a secondary stage operation used as the feed material. A change in relative viscosity was investigated by altering the viscosity of the carrier fluid (water) by the addition of sucrose, and modification of the slurry …
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Mineralogical characterization of South African mine tailings with aim of evaluating their potential for the purposes of mineral carbonation
… mining the Merensky, Upper Group 2 (UG-2) and Platreef. Nkomati was another operation selected for the study, with samples collected from the Main Mineralised Zone (MMZ) and Chromititic Peridotite Mineralized Zone (PCMZ). Tailings material from the dormant O'okiep operation was the seventh, …
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