The main activity of the Talvivaara Mining Company Plc. is development and exploitation ofthe deposits in Sotkamo, Finland using bioheapleaching. comprise one largest known sulphide nickel resources Europe with 1004 million tonnes ore, sufficient to support anticipated production for a minimum 45 years. mine started late 2008 will have an annual output approximately 50,000 tons when it reaches ...

it is always attempted to reduce the costs of comminution in mineral processing plants. one of thedifficulties in size reduction section is not to be designed properly. the key factor to design size reductionunits such as crushers and grinding mills, is ore’s work index. the work index, wi, presents the oregrindability, and is used in bond formula to calculate the required energy. bond has defi...

Iron oxide grain coatings in red sandstones contain trace metals that are released upon dissolution of the coatings. Analyses by ICP-MS following acid leaching show dissolved can constitute an ore-forming fluid, as hypothesized models for sandstone-hosted ore deposits. Median compositions 37 samples, mostly Triassic to Devonian age, from across Britain and Ireland 6.3 ppm copper, 2.4 cobalt, 10...

A lthough cosmetics, from Greek kósmesis (adorn), now refers to external products used to beautify the skin, hair, eye, or other parts of the body, cosmesis was not the first objective of primitive eye painting. The first aim of body painting in primitive cultures may have been to protect people from evil spirits, which could enter their body through vulnerable openings, such as the eyes. The s...

The extraction behavior of Cu(II) ions from a real sulfate liquor obtained from the heap leaching stage of a copper oxide ore was investigated using a chelating reagent, Chemorex CP-150 in kerosene. A comparative study was also carried out on the extraction capability of Cu(II) ions using other solvents including D2EHPA and Cyanex 272.Chemorex CP-150 demonstrated an effective and selective extr...

A new heterotrophic strain, named Providencia sp. JAT-1, was isolated and used in bioleaching of low-grade complex copper ore. The strain uses sodium citrate as a carbon source and urea as a nitrogen source to produce ammonia. The optimal growth condition of the strain is 30 ̋C, initial pH 8, sodium citrate 10 g/L and urea 20 g/L, under which the cell density and ammonia concentration in the me...

Background The Sossego mine, located in Canaã dos Carajás, Pará, Brazil, has a pond of wastes with low copper concentrations economically unfeasable for extraction. In this place, we can improve environmental conditions and, at the same time, recover part of the ore diluted in these wastes, through evaluation and use of the local biodiversity, in bioremediation processes, once the use of this t...

Copper slag flotation was studied on an industrial scale at a concentrator plant in the region of Atacama, Chile. This study consisted physical, chemical, and mineralogical characterization copper slag, along with preliminary tests. article focuses flotation, which two oneyear campaigns (2016 2017). The first campaign carried out using existing circuit plant. During second (2017), for sulfide o...

This paper presents the results of a numerical analysis impact rock mass geomechanical parameters on stability preparatory headings located within Legnica-Glogow Copper District. The shows calculations prepared for driven in two types with different strength and deformation parameters, which allow illustrating their influence safety mining performed underground copper ore mines. Numerical model...