Results 11 to 20 of about 824,278 (263)
Occurrence of Scandium in a Ilmenite Ore in Northwest China
Kuangchan zonghe liyong, 2023 This is an essay in the field of process mineralogy. In order to find out the properties of low-grade titanium ore with scandium, chemical analysis, electron microscope, X-ray diffraction, automatic mineral analyzer and optical microscope are used to ...
Feiyan Liu +3 more
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Occurrence state and migration mechanism of arsenic in metal mines
地质科技通报, 2022 Environmental pollution often occurs in the process of mining, beneficiation and smelting of metal mines.Arsenic pollution caused by acid mine drainage (AMD) is one of the most serious pollution problems of heavy metals.
Xiaoping Zhang +8 more
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工程科学学报, 2021 Iron ore sintering is a process in which iron ore powder, flux, iron-bearing dust, solid fuel (such as coke powder), and return fines are mixed in a certain proportion, granulated, and then processed into agglomerates by high-temperature generated by ...
Hao ZHOU +3 more
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The occurrence and transport of microplastics: The state of the science
Science of The Total Environment, 2021 Microplastic (MP) particles have been observed in most environments and concentrations are expected to increase over the coming decades given continued and increased production of synthetic polymer products. The expected increase in plastic pollution (including MPs) may elevate the risk posed by these synthetic particles to both environmental and human
Fritz, Petersen, Jason A, Hubbart
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Yankuang ceshi, 2022 BACKGROUND Microbeam analytical technology can be used to accurately analyze the petrography, morphology, structure, component and isotopic composition of ore minerals on the micro-nano scale, which plays a vital role in supporting the detailed research ...
TU Jiarun +7 more
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Occurrence of asbestos in soils: state of the art
Episodes, 2020 In the last decades, it has been widely demonstrated the risk to human health related to asbestos fibres exposure. Many studies have mainly focused on the mineralogical and geochemical characterization of ophiolites (i.e., serpentinite and metabasite rocks) since they are the main lithotypes associated with Naturally Occurring Asbestos (NOA ...
Ricchiuti C., Bloise A., Punturo R.
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Yankuang ceshi, 2021 BACKGROUND The Huayangchua polymetallic deposit is a super-large mineral deposit that has economic endowments of uranium and rare earth resources. The deposit is characterized by the unique ore types and complex mineral assemblage.
WAN Jian-jun +9 more
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Canadian Journal of Philosophy, 2018 In The Mind’s Construction, Matthew Soteriou argues that some mental states must be occurrent in their nature, owing to the role they play in the general structure of experience. This chapter argues that Soteriou underestimates the difficulties inherent in making it plain how something occurrent could be a state, at any rate on the most natural ...
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Occurrence of Rare Earth, Iron, Phosphorus and Calcium in High Grade Rare Earth Concentrate
Kuangchan zonghe liyong, 2022 Rare earth grade of Bayan Obo mixed rare earth concentrate is 65.86%, and the contents of P2O5, CaO and TFe are 11.26%, 3.89% and 1.34%, respectively. Chemical analysis, automatic mineral analysis system, SEM and EDS were used to study the occurrence of ...
Na Li +3 more
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