Results 91 to 100 of about 3,717 (223)

Chemical composition of scheelite and its application as an indicator mineral

, 2023
Titre de l'écran-titre (visionné le 19 juin 2023)La scheelite est un minéral de tungstène (CaWO₄) qui est présent dans plusieurs gisements magmatiques-hydrothermaux et qui est associé temporellement et spatialement à l'or dans certains gisements d'or ...
Miranda, Ana Carolina R.
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Removal and utilization of calcite existed in scheelite by preparation of calcium sulfate whiskers

International Journal of Mining Science and Technology, 2017
In order to eliminate the effect of calcite associated with scheelite on the scheelite flotation, hydrochloric acid was used to dissolve the calcite, and the soaking solution was used to prepare CaSO4 whiskers by hydrothermal reaction with sulfuric acid ...
Qingjun Guan, Wei Sun, Yuehua Hu, Changping Guan, Zhigang Yin, Chenhu Zhang   +5 more
doaj   +1 more source

Geochemical and mineralogical heterogeneity of the Cantung mine tailings: implications for remediation and reprocessing

Frontiers in Geochemistry
Reprocessing tailings to recover minerals of economic interest and environmental concern can add value to a project and decrease environmental risk, but dealing with heterogeneity within tailings facilities is a challenge.
A. Surrette, A. Dobosz, G. Lambiv Dzemua, H. Falck, H. E. Jamieson   +4 more
doaj   +1 more source

Kinetics of Scheelite Conversion in Sulfuric Acid

, 2018
Complete conversion of scheelite in H2SO4 solution plays a key role in exploration of cleaner technology for producing ammonium paratungstate. In this work, the factors influencing scheelite conversion were investigated experimentally to model its ...
Taskinen, Pekka, Shen, Leiting, Guihua Liu, Qi, Tiangui, Pekka Taskinen, Leiting Shen, Tiangui Qi, Zhou, Qiusheng, Liu, Guihua, Zhihong Peng, Peng, Zhihong, Li, Xiaobin, Xiaobin Li, Qiusheng Zhou   +13 more
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Scheelite (fluorescent)

Photographed by Ron Wolf.Vitreous white scheelite (A0179-0308); two views of vitreous white scheelite: left view shows specimen in plain light; right view shows fluorescent properties of blue color under ultraviolet light (A0179-0309); vitreous white ...
Wolf, Ron
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Separation of a Tungsten-tin Rough Concentrate by Flotation-hydrometallurgy Combined Process

Kuangchan zonghe liyong
[Objective] To achieve the effective separation of useful minerals from gangue, by taking advantage of the difference in specific gravity between cassiterite and gangue, tungsten was also enriched in the crude concentrate of tin through gravity ...
Shuai WANG, Yuhang SHI, Baoxu SONG, Enming HUANG, Guang YANG   +4 more
doaj   +1 more source

Cristaux de cassitérite et de scheelite d'Égypte

, 1958
Tosson Salama. Cristaux de cassitérite et de scheelite d'Égypte. In: Bulletin de la Société française de Minéralogie et de Cristallographie, volume 81, 7-9, 1958.
Tosson, Salama
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Scheelite on fluorite (fluorescent)

Photographed by Ron Wolf.Yellow-white scheelite on mass of vitreous white fluorite crystals (A0179-0332); two views of scheelite on fluorite: top view shows specimen in plain light; bottom view shows fluorescent properties of blue under ultraviolet light
Wolf, Ron
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Data_Sheet_1_Structures of Pb-BHA Complexes Adsorbed on Scheelite Surface.PDF

, 2019
Previous studies have shown that Pb-BHA complexes (lead complexes of benzohydroxamic acid) have better collecting ability and can be used in flotation experiments with BHA acting as a collector and lead ions acting as activators.
Yuehua Hu (131613), Yangge Zhu (7420469), Wenjuan Sun (332428), Wei Sun (93580), Zhenguo Song (689749), Zhao Wei (3095598), Haisheng Han (6747686), Ruolin Wang (1556374), Bicheng Li (647182)   +8 more
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Direct Tungsten Extraction from Scheelite in a Molten Salt Media

Electrochemistry
Tungsten is a basic metal commodity that is classified as critical raw material (CRM) by the European Commission (EC) with the highest economical importance compared to other CRM.
Ana Maria MARTINEZ, Anne STØRE, Karen OSEN   +2 more
doaj   +1 more source