نتایج جستجو برای: sulfide ores
تعداد نتایج: 19950 فیلتر نتایج به سال:
Spontaneous combustion of sulfide ore is one the most common disasters in process mining, storage, and transportation, which can lead to a series safety environmental problems, thus affecting sustainable development society. In this paper, four imidazolium-based ionic liquids: [BMIM][I], [BMIM][BF4], [EMIM][BF4], [BMIM][NO3], were selected for inhibition experiments with ores reveal performance...
Face recognition, holistic processing, and processing of configural and featural facial information are known to be influenced by face race, with better performance for own- than other-race faces. However, whether these various other-race effects (OREs) arise from the same underlying mechanisms or from different processes remains unclear. The present study addressed this question by measuring t...
With the global demand for economically important metals increasing, compounded by depletion of readily accessible ores, secondary resources and low-grade ores are being targeted to meet growing demands. Novel technologies developed within biobased industries, such as microbial biosurfactants, could be implemented improve sustainability traditional hydrometallurgy techniques. This study investi...
The Fraser Zone of the Albany-Fraser Orogen Western Australia contains an extensive suite mafic and mafic–ultramafic intrusions. This includes Nova-Bollinger intrusions (ca 1300 Ma), which host economic Ni-sulfide mineralisation, a prime example magmatic sulfide liquids emplaced into deep crust under ambient granulite facies conditions. Sulfur, Sr Sm–Nd isotopes, trace elements have been used t...
Resource gathering is depending on leaner crude ores. Iron ore mining typifies this trend. To make lean taconite iron ores useful required a technologic breakthrough-pelletization. The shift to iron ore pellets has the advantage that they require less energy and labor per ton of molten iron than high-grade naturally concentrated ores. Increased reliance on pellets causes a geographic shift of s...
Flotation is, doubtless, the most important process among the various techniques used for the treatment of ore. This generalpurpose technique allows the treatment of several complex ores (lead zinc, copper zinc), sulphides (copper, lead, and zinc), oxides (hematite, quartz), oxidized minerals (malachite, cerusite) and even non-metal ores (fluorite, phosphate, coal). Due to the flotation, it is ...
metals used in everyday life are produced from ores occurring in the earth’s crust. geological processes are known to concentrate minerals to form ores of economic value. mineral processing engineers concentrate these ores by mechanical and physico-chemical methods while the extractive metallurgist extracts the metals by chemical means.
The biogeochemcical reactions responsible for fossilized minerals preservation in ancient geological conditions are very often debatable, because little is known about the in situ processes at geo-historical period. In the present study, we describe the formation of iron ores collected in the intertidal zone of the Zhujiajian Island, Zhoushan Archipelago in the East China Sea. Morphological, mi...
Remote 3D virtual reality systems for visualizing fossils and ores are a kind of efficient tools to facilitate communication and research in geology and palaeontology community. During the visualization procedure, we must keep not only the geometrical data but also the surface textures and color information. They are very important for the specialists to analyse the forming time and environment...
Bacterial leaching is the extraction of metals from their ores using microorganisms. The most important player in the bioleaching process is. 4 Bacterial Attachment on Mineral Surfaces 200. 5 Microbial Diversity in Bioleaching Environments 200. Minerals are obtained using a leaching process.greater understanding of the mechanism of bacterial leaching of sulphide minerals. This latter process wh...
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