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Therefore, the effective inhibition of talc during chalcopyrite flotation has become the key to efficient exploitation and utilization of such copper resources. Talc is a typical layered silicate mineral with a TOT-type structure that consists of two silicon tetrahedral sheets sandwiching one Mg–O(OH) octahedral sheet.
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Selective rejection of talc in the third flotation stage is achieved by the addition of sufficient guar gum to depress talc and of sufficient copper sulphate to activate pentlandite i.e., by minimising the rate of talc flotation and maximising the rate of pentlandite flotation.
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The flotation separation of chalcopyrite and talc is challenging due to their similar natural floatability characteristics. Besides, it is usually difficult to effectively inhibit talc by adding sodium carboxymethyl cellulose (CMC) alone during chalcopyrite flotation. Here, a combined inhibitor comprising acidified sodium silicate (ASS) and CMC was …
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Lumps of pure molybdenite (Jiangxi, China) and talc (GuangXi, China) samples were successively crushed by hand, ground by a mechanised agate mortar and screened to collect 38–74 µm size fractions for X-ray diffraction (XRD) analysis, flotation tests and X-ray photoelectron spectroscopy analysis, while 0–38 µm size fractions were …
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flotation of low grade iron ore - manveesingh.in. Iron ore - Wikipedia. The Lower-grade sources of iron ore generally require beneficiation, using techniques like crushing, milling, gravity or heavy media separation, screening, and silica froth flotation to improve the concentration of the ore and remove impurities.
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Study on the flotation behavior of talc flocs. Due to the inherent floatability of talc, only #2 oil was selected as the frother in the flotation experiments to compare the variances in floatability among different flocs. #2 oil is a commonly employed frother in flotation processes, known for its excellent frothing properties, primarily ...
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Hydrophobic talc nanoparticles (T-NPs) were used as natural solid collectors to study calcite flotation in a modified Hallimond flotation tube to optimize process conditions. The results demonstrated that the calcite surface hydrophobicity and resulting floatability significantly changed with variations in the concentration of T-NPs.
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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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rity of the talc ore by multistage flotation was optimized through natural floatability and subsequently followed by the application of a selective carbonate depressant (Yehia and Al-Wakeel 2000). Also, leaching methods for talc up-grade using estimated optimal conditions of variable parame-
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Talc is a naturally hydrophobic gangue mineral in most sulfide ores. However, talc has vast applications in the cosmetics, paper, and paint industries due to its high chemical stability, and its demand continues to grow. Since flotation is the most effective beneficiation technique for upgrading sulfides, the high hydrophobicity of talc …
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Talc is a naturally hydrophobic gangue mineral in most sulfide ores. However, talc has vast applications in the cosmetics, paper, and paint industries due to its high chemical stability, and its demand continues to grow. Since flotation is the most
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Talc is a naturally hydrophobic gangue mineral in most sulfide ores. However, talc has vast applications in the cosmetics, paper, and paint industries due to its high chemical stability, and its demand continues to grow. Since flotation is the most effective beneficiation technique for upgrading sulfides, the high hydrophobicity of talc …
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The natural hydrophobicity of talc was depressed by the use of ultrasonic treatment during flotation. The recovery of the talc decreased by nearly 30% after 4 min of ultrasonic preconditioning. In addition, two talc depressants, namely, IMP4 and carboxymethyl cellulose (CMC), were compared during ultrasound treatment. The guar …
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New methods for flotation agents are developed through cross-exploration of microbiology, surface colloidal chemistry, and flotation theory. • First attempt to optimize the culture parameters and polysaccharide structure of strains to synthesize green and efficient talc inhibitors.
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This paper investigated the effects of using or not using potassium butyl xanthate (PBX) as a collector on the flotation kinetics of talc and chalcopyrite. By means of atomic force microscopy (AFM), Fourier-transform infrared spectroscopy (FTIR), a contact angle measuring instrument and particle size analyzer, the underlying causes behind the …
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