- منطقة بودونغ الجديدة ، شنغهاي ، الصين .
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Thus, the present review article also collates the surface properties and various reagent systems developed towards enhancing the flotation selectivity of scheelite particles. Further, the present communication critically reviews the flotation separation of the wolframite mineral system for the first time.
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The development of sulfide-based chemistry and physical separation in the last decade opens new processes to produce metals at the industrial scale. Herein, a new route to produce metallic tungsten and tungsten carbides particles from natural wolframite (Fe,Mn)WO4 and scheelite CaWO4 is presented. Sulfidation of mineral concentrates …
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The composition of a collector directly affects its collecting performance in mineral flotation. In this study, three vegetable oils were used as the collectors, the flotation performance of scheelite and the differential analysis were studied through flotation experiments, zeta potential, contact angle measurement and Fourier transform …
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The flotation of complex solid–liquid multiphase systems involve interactions among multiple components, the core problem facing flotation theory. Meanwhile, the combined use of multicomponent flotation reagents to improve mineral flotation has become an important issue in studies on the efficient use of refractory …
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In this study, ceramic ball (CB) and cast iron ball (CIB), two representative grinding media, were chosen to investigate the effects and mechanisms of grinding media on the flotation behavior of scheelite. The results of pure scheelite flotation show that scheelite ground by CB has a better floatability than that ground by CIB.
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With the depletion of easily mined and separated wolframite, scheelite has become the primary source of tungsten. Flotation is the primary technique used to enrich scheelite. However, flotation separation of scheelite from calcium-bearing gangue minerals, such as calcite and fluorite, has always been challenging due to their similar …
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Tungsten and tin are important strategic resources. Scheelite and cassiterite have similar physical and chemical properties and face the challenge of flotation separation. This study proposes soluble starch (SS) as an effective depressant for the flotation separation of scheelite from cassiterite.
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Wolframite is defined as the principal ore mineral of tungsten, commonly found in association with tin ore in granite rocks. It is an iron manganese tungsten oxide mineral with a dark gray to brown-black color, high specific gravity, and is a key source of tungsten used in various industrial applications.
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However, chelate collectors that can achieve better flotation of scheelite have a weak collecting capacity for scheelite; hence, the mixed flotation of scheelite and wolframite faces large technical problems (Foucaud et al., 2020, Yang, 2018).
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Owing to the depletion of wolframite, the focus of tungsten extraction has gradually shifted to scheelite. However, separating the associated minerals (e.g., apatite, fluorite, and calcite) and scheelite is challenging because their surface physicochemical properties are similar to those of scheelite. Fortunately, researchers have made …
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Wolframite and scheelite are two critical sources of tungsten. At present, flotation is an efficient mineral processing method to recover tungsten ores of low grade and fine grain. Fatty acid is usually used as a collector of scheelite but has weak effects on wolframite flotation.
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Activation effect of lead ions on scheelite flotation: Adsorption mechanism, AFM imaging and adsorption model. Author links open overlay panel Liuyang Dong, Fen Jiao ... A recent study revealed that lead ions can be adsorbed onto the surfaces of scheelite and wolframite to enhance their flotation recovery using benzohydroxamic …
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In order to improve the recovery of tungsten ores containing tin minerals, anisic hydroxamic acid (p-methoxy benzohydroxanic acid, PMOB) was synthesized and introduced as novel collector in the flotation of scheelite, wolframite and cassiterite. The flotation performance and adsorption mechanism were investigated by micro/batch …
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Scheelite (CaWO4) and Wolframite ((Fe,Mn)WO4) are the principal minerals of tungsten, but other important minerals include ferberite (FeWO4) and huebnerite (MnWO4) will also respond to froth flotation.The high specific gravity of these minerals makes many of these ores amenable to gravity concentration methods, however, the …
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The activation of scheelite and wolframite by lead nitrate with benzohydroxamic acid (BHA) as collector was investigated by means of micro flotation test, zeta potential measurement, X-ray photoelectron spectroscopy (XPS) analyses and density functional theory (DFT) calculation. The flotation results confirmed that the …
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In the industrial production of scheelite flotation, the flotation process includes roughing and cleaning flotation, which is long and complicated. ... A study of interactions and flotation of wolframite with octyl hydroxamate. Miner Eng 10(6):623–633. Article CAS Google Scholar ... Nigeria. Alafara Abdullahi Baba . University of …
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Scheelite (CaWO 4) is an important mineral for extracting tungsten and usually associated with fluorite in Chinese scheelite deposits.1,2 The utilization of refractory scheelite deposits wolframite resources that can be easily separated via the gravity method and are almost depleted has become important. Conventional flotation practice for ...
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