Dolomite [CaMg(CO3)2] is an intolerable impurity in phosphate ores due to its MgO content. As high grade phosphate reserves become depleted, the need to develop a cost effective method for the removal of dolomite from high-MgO phosphate ores becomes increasingly important. The jigging process has been investigated as a method for the beneficiation of high-MgO sedimentary phosphate ores. A labor...

GEES (School of Geography, Earth and Environmental Sciences), The University of Birmingham, Birmingham B15 2TT, UK, CE3C – Centre for Ecology Evolution and Environmental Changes/Azorean Biodiversity Group and Universidade dos Ac ores – Departamento de Cîencias e Engenharia do Ambiente, 9700-042 Angra do Hero ısmo, Ac ores, Portugal, Dep. de Cîencias Agr arias, CMMG (Centro de Estudos do Clima M...

Mining and metallurgy have negative consequences for the environment [1-3] and lead to changes in geological [4] and climatic conditions [5]. Mining-metallurgy operations include the extraction, preparing of ores (crushing ore and flotation), processing of concentrates, and the disposal of waste rock and by-products. The main waste in mining and metallurgy are waste rocks, flotation tailings an...

The distributions of trace elements in pyrite were studied samples high-grade gold ores from the Talatui, Teremkyn, and Darasun deposits. paper presents LA-ICP-MS data on concentrations mineral deposits goldfield, which produced by a single fluid–magmatic system at various temperatures. high-temperature was found to be enriched Co, Se, W, whereas medium-temperature Cu, Zn, Ag, Te, As, In. behav...

The material source and the evolution of ore-forming hydrothermal fluids Xiaojiashan gold deposits remain controversial. We carried out a mineralogical characteristics analysis, trace elements sulfur isotope composition fluid inclusion microthermometry in order to explore sources, conditions, process this deposit. Gold mineralization can be divided into three stages: quartz-pyrite stage, quartz...

Mining trends in the gold sector indicate a growing imbalance global supply and demand chains, especially light of accelerated efforts towards industrial electrification automation. As such, it is important that research development continue to focus on processing options for more complex refractory ores. Unlike conventional (i.e., free-milling) ore feeds, not amenable standard cyanidation, req...

The use of geometallurgical modelling is becoming common in the design a concentrator plant and during its operational phase. Predictive aims to define optimized process parameters for accommodate variability ore feed characteristics. main objective this study simulate metallurgical response distinct unit types their blends using kinetic models derived from experimental flotation tests. Kinetic...

in the present work, the extraction of zinc from a sphalerite concentrate using sodium nitrate as an oxidant in a sulfuric acid solution was investigated. the effective parameters such as the temperature, sulfuric acid and sodium nitrite concentrations, stirring speed, particle size, and solid/liquid (s/l) ratio were analyzed. the dissolution rate increased with increase in the sulfuric acid an...

Abstract Recent studies have identified gold nanoparticles in ores a range of deposit types, but little is known about their formation processes. In this contribution, gold-bearing magnetite from the well-documented, world-class Beiya Au deposit, China, was investigated terms microstructure and crystallography at nanoscale. We present first three-dimensional (3D) focused ion beam/scanning elect...

Nowadays, refractory gold ore production around the world accounts for about 30% of total production, and low leaching rate such concentrate seriously limits efficient utilization resources. The alkaline preoxidation process can improve this kind deposit has good development application prospects. Therefore, it is great significance to study oxidation dissolution behavior pyrite in an environme...