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2010年10月1日 In biobeneficiation processes a wide range of microorganisms were used, from simple structure prokaryotes represented mostly by bacteria and archaea (Sulfolobus) to more complex eukaryotes represented by different fungi strains (Aspergillus niger,
2022年1月1日 Biobeneficiation to upgrade low-grade sulfide and iron ores has the potential to turn closed mines or uneconomic mineral deposits and secondary wastes and
2015年1月1日 A biomining approach to process low-grade iron ores has the potential to turn closed mines or uneconomic mineral deposits into economic resources.
2021年12月31日 Conventional beneficiation of the Platinum Group of Metals (PGMs) relies on the use of inorganic chemicals. With the depreciation of high grade deposits, these
The extraction of copper from sulfidic copper ores through the agency of acidophilic iron-oxidizing bacteria, e.g., Thiobacillus ferrooxidans, has become an industrially accepted
2017年1月1日 The study involves Biobeneficiation of oxide minerals using Ba-cillus subtilis. Characterization of minerals (hematite, corundum, calcite and quartz) was carried out through XRD, EDAX and FTIR
2019年5月26日 bearing mineral widely used in iron and steel industries, but it is associated with oxide gangue minerals. Iron ore consists of hematite and gangue minerals like
2001年1月1日 Request PDF Biobeneficiation of mineral raw material A process for the combined chemico-biological removal of iron present as oxide minerals in different
1999年11月1日 A process for the combined chemico-biological removal of iron present as oxide minerals in different mineral raw materials (quartz sands, kaolins, clays, etc.) was
Biobeneficiation processes involving the separation of valuable minerals from ores and materials using conventional flotation and flocculation methods have been shown to be promising in recent years. There is an
2010年10月1日 In biobeneficiation processes a wide range of microorganisms were used, from simple structure prokaryotes represented mostly by bacteria and archaea (Sulfolobus) to more complex eukaryotes represented by different fungi strains (Aspergillus niger, Candida parapsilosus).Chemolitotrophic microorganisms capable to derive energy by the
2022年1月2日 Mineral biotechnological applications, e.g., bioleaching and bio-beneficiation, for waste treatment and resource recovery have invited due attention owing to their economic and eco-friendly benefits in comparison to the conventional methods. Although research has progressed well, there are several aspects that are still not well
2019年10月10日 The 2nd Mineral Processing and Technology International Conference. IOP Conf. Series: Materials Science and Engineering. 478 (2019) 012021 Coal biobeneficiation was carried out to investigate the changes in the total sulfur and ash in coal after treatment with bacteria (Table 1). It was found that the total sulfur content of the
2021年8月15日 Biobeneficiation of bulk copper-zinc and copper-nickel concentrates at different temperatures. Author links open overlay panel Maxim Muravyov, Anna Panyushkina, Sulfide minerals of the copper-zinc concentrate were characterized by mutual intergrowth and inclusions, which caused difficulties in the selective flotation of
The extraction of copper from sulfidic copper ores through the agency of acidophilic iron-oxidizing bacteria, e.g., Thiobacillus ferrooxidans, has become an industrially accepted technology in mining and mineral processing, especially for low-grade ore, and is now also receiving serious consideration for high-grade ores and ore concentrates (see chapters
1999年11月1日 A process for the combined chemico-biological removal of iron present as oxide minerals in different mineral raw materials (quartz sands, kaolins, clays, etc.) was developed. In the process, mineral raw materials are leached at about 90°C with lixiviant containing microbially produced oxalic and hydrochloric acids. The leaching is carried out
1999年11月1日 A process for the combined chemico-biological removal of iron present as oxide minerals in different mineral raw materials (quartz sands, kaolins, clays, etc.) was developed. In the process, mineral raw materials are leached at about 90°C with lixiviant containing microbially produced oxalic and hydrochloric acids. The leaching is carried out
2001年1月1日 Request PDF Biobeneficiation of mineral raw material A process for the combined chemico-biological removal of iron present as oxide minerals in different mineral raw materials (quartz sands
2015年12月15日 Role of indigenous microbes in the formation and conversion of bauxite minerals is illustrated. Many types of microorganisms such as fungi, heterotrophic and autotrophic bacteria and yeasts inhabit bauxite ore deposits bringing about biogenesis and biomineraliztion. Organisms capable of iron oxidation and reduction and solubilising
1996年11月1日 Calcium and iron removal from a bauxite ore by Bacillus polymyxa has been demonstrated. Within a period of 7 days, the above organism could remove all the calcium and about 45% of iron from the ore in the presence of 2% sucrose in a Bromfield medium. The highest removal of calcium and iron corresponded with the maximum in
2010年10月1日 In biobeneficiation processes a wide range of microorganisms were used, from simple structure prokaryotes represented mostly by bacteria and archaea (Sulfolobus) to more complex eukaryotes represented by different fungi strains (Aspergillus niger, Candida parapsilosus).Chemolitotrophic microorganisms capable to derive energy by the
2022年1月2日 Mineral biotechnological applications, e.g., bioleaching and bio-beneficiation, for waste treatment and resource recovery have invited due attention owing to their economic and eco-friendly benefits in comparison to the conventional methods. Although research has progressed well, there are several aspects that are still not well
1999年11月1日 A process for the combined chemico-biological removal of iron present as oxide minerals in different mineral raw materials (quartz sands, kaolins, clays, etc.) was developed. In the process, mineral raw materials are leached at about 90°C with lixiviant containing microbially produced oxalic and hydrochloric acids. The leaching is carried out
2001年1月1日 Request PDF Biobeneficiation of mineral raw material A process for the combined chemico-biological removal of iron present as oxide minerals in different mineral raw materials (quartz sands
2015年12月15日 Role of indigenous microbes in the formation and conversion of bauxite minerals is illustrated. Many types of microorganisms such as fungi, heterotrophic and autotrophic bacteria and yeasts inhabit bauxite ore deposits bringing about biogenesis and biomineraliztion. Organisms capable of iron oxidation and reduction and solubilising
1996年11月1日 Calcium and iron removal from a bauxite ore by Bacillus polymyxa has been demonstrated. Within a period of 7 days, the above organism could remove all the calcium and about 45% of iron from the ore in the presence of 2% sucrose in a Bromfield medium. The highest removal of calcium and iron corresponded with the maximum in
2014年10月8日 This review focuses on Biobeneficiation of iron ore minerals. Biobeneficiation of iron ore is very challenging due to the low price and chemical constitution of the ore. There are substantial interests in the exploration of this technology for improving the quality of iron ore minerals. Rawlings DE, Dew D, du Plessis C (2003
Formation of hydrogen peroxide (H2O2), an oxidizing agent stronger than oxygen, by sulphide minerals during grinding was investigated. It was found that pyrite (FeS2), chalcopyrite (CuFeS2), sphalerite ((Zn,Fe)S), and galena (PbS), which are the most abundant sulphide minerals on Earth, generated H2O2 in pulp liquid during wet grinding
2019年4月9日 Biobeneficiation is the method of removing undesir-able elements like iron present as impurities in minerals by microbial action via oxidative or reductive dissolution of insoluble complexes of the same (Colmer et al 1980; Christinia 1992). This occurs either by direct (requires physical contact of viable microbial cells with the mate-
2014年11月25日 In this review, current developments in the biobeneficiation of iron ore minerals are considered, and potential solutions to challenges faced in the wider adoption of this technology are proposed.