In the single mineral flotations, the Fe-BHA showed a significant difference in the flotation recoveries of scheelite and calcite, with a scheelite recovery of 77.03% at …

The floatability of scheelite and calcite in the presence of single depressant (SHMP or H3Cit) and mixed depressant (SHMP/H3Cit) was studied by microflotation experiments and artificial mixed mineral experiments. Solution chemical calculation, zeta potential tests, thermodynamic analysis and XPS analysis were used to explain the …

An efficiently optimized reagent regime was investigated to improve scheelite heating flotation. The scheelite grade and recovery in the plant were significantly improved by 5% and 6% ...

DOI: 10.5276/JSWTM.2010.61 Corpus ID: 138265966; A Comparative Study of Recovering Fine Scheelite in Tailings by Flotation Cell and Flotation Column @article{Huang2010ACS, title={A Comparative Study of Recovering Fine Scheelite in Tailings by Flotation Cell and Flotation Column}, author={Guan Zhong Huang and Qi …

The samples of scheelite, calcite and fluorite were all obtained from Xintianling mine, Hunan, China. Hand-selected crystals of these minerals were crushed to −1 mm by a laboratory roll crusher.The crushed products were then ground in a ceramic ball mill and dry-sieved to obtain the −74 + 38 μm-size fractions for micro-flotation tests.A …

DOI: 10.3390/MIN8070264 Corpus ID: 102762310; Different Flotation Performance of Ultrafine Scheelite under Two Hydrodynamic Cavitation Modes @article{Zhou2018DifferentFP, title={Different Flotation Performance of Ultrafine Scheelite under Two Hydrodynamic Cavitation Modes}, author={Weiguang Zhou and Le-ming Ou …

DOI: 10.1007/s12613-023-2755-x Corpus ID: 268946334; Flotation separation of scheelite from calcite using luteolin as a novel depressant @article{Li2024FlotationSO, title={Flotation separation of scheelite from calcite using luteolin as a novel depressant}, author={Xiaokang Li and Ying Zhang and Haiyang He and Yu Wu and Danyu Wu and …

When Si concentration in recycled water exceeds 500 mg/L, recovery of scheelite roughing decreases by 5%–8% in winter and 1%–2% in other seasons in comparison with another flotation workshop. Industrial Ca-containing waste acid and calcium chloride have been studied to remove silicate from scheelite flotation …

Tungsten is an essential metal for the manufacture of special alloys, which is in constant demand due to the development of the industry. The recovery of scheelite from undeveloped tungsten ore in South Korea was investigated to improve the flotation performance for high grade and recovery of concentrate. To investigate the interaction …

Fig. 3 shows the effect of water glass on the flotation performance of scheelite and calcite as a function of (a) water glass dosage and (b) solution pH value. As shown in Fig. 3 (a), when the dosage of water glass is less than 300 mg/L, the flotation recovery of scheelite decreases slightly, illustrating that scheelite is less sensitive to …

Micro-flotation experiments were conducted using the XFG-Ⅱ cell flotation machine with a 30 mL flotation cell. 2 g of scheelite sample and 30 mL of deionized water were transferred to the flotation cell for flotation experiments. The flotation machine speed was 1600 r/min. The pulp was pre-stirred for 1 min, the pulp pH was adjusted for 2 min ...

1. Introduction. Tungsten is a strategically important industrial metal. Scheelite (CaWO 4) is an important tungsten-containing mineral, and calcite (CaCO 3) is a significant gangue mineral in many scheelite deposits (Feng et al., 2015, Ilhan et al., 2013).The most common flotation technique commercially used for the treatment of …

ABSTRACT The flotation results show that Ca2+ significantly reduces the flotation recovery of scheelite using single dodecylamine (DDA) or single sodium oleate (NaOL), whereas Ca2+ hardly affects … Expand

Flotation experiments were conducted in a laboratory flotation machine with a 1 L cell (XFDIII-1L, Haoxin Mining Machinery ... and even improved it at relatively low (600 g/t) or high (1500 g/t) sodium carbonate dosages. The reuse of MOW for scheelite flotation seems to be a promising method in terms of economic and environmental …

Scheelite has similar properties to gangue minerals such as calcite, resulting in similar flotation reactions to conventional anionic collectors [11], [12], [13]. Fatty acids are the main collectors in use in flotation of scheelite, and its adsorption occurs on the cationic sites (Ca 2+) on the surface of calcium-bearing minerals. The ...

Scheelite is a calcium tungstate mineral that is commonly found in various geological environments. It is an important ore of tungsten, which is a metal known for its high melting point, density, and strength. Scheelite is named after Carl Wilhelm Scheele, a Swedish chemist who discovered tungsten in 1781. The mineral is typically found in […]

The small molecule depressants generally applied in scheelite flotation primarily cover oxalic acid, citric acid, tartaric acid and lactic acid. The macromolecular depressants ... 2.0 g mineral mixed with 35 mL deionized water was added to the plexiglass flotation cell while being stirred at 1600 r/min. After the solution was stirred for 1 min ...

Flotation experiments were carried out using a Wedag Laboratory flotation machine with a half-litre pyrex glass cell. A mixture of 50 g of -212 +53 micron scheelite and calcite particles with a grade of 5.93 % WO3 was used in flotation studies. ... TABLE 1 The effect of types of collector on the flotation of scheelite* Collector Type Product ...

Request PDF | A Comparative Study of Recovering Fine Scheelite in Tailings by Flotation Cell and Flotation Column | There are nearly 2000 tons of cleaner circuit tailings containing about 0.32ε0 ...

Pb 2+ ions could slightly activate scheelite flotation in the presence of water glass.. Pb 2+ ions could enhance the depression effects of water glass on calcite and fluorite flotation.. Pb 2+ ions combined with W‐O bond to form W-O-Pb 2+ structure on scheelite surface, which increased NaOl adsorption.. Pb-water glass and water glass …

Low-grade and high-reserve scheelite, which is associated with calcite, has similar surface properties that cause difficulty in separation. In this study, sulfomethylated kraft lignin (SMKL) was used as a novel …

1. Introduction. Scheelite (CaWO 4) is one of the main sources of tungsten, alongside with the other monotungstates stolzite (PbWO 4) and wolframite (a solid solution of ferberite (FeWO 4) and hübnerite (MnWO 4)).Scheelite is however more common and is found in approximately 65% of known tungsten deposits [1].Pale white to brown-orange, …

Both scheelite and calcite showed good flotation in the pH region from 8 to 12 and the optimum condition for scheelite flotation around pH 9. The high recovery of scheelite and calcite in the basic region is attributed to interaction between RCOO − and Ca ions on mineral surface ( Gao, 2014 ).

The flotation behavior of DPA was studied by micro-flotation and mixed binary mineral flotation tests, which showed that DPA has good collection ability and excellent selectivity for scheelite.

An XFG type flotation machine equipped with a cell of 40 mL was used to conduct the flotation tests (Gao et al., 2016a). 2 g natural mineral powders with a size range from 37 to 74 μm and 35 mL ...

The flotation behavior of DPA was studied by micro-flotation and mixed binary mineral flotation tests, which showed that DPA has good collection ability and excellent selectivity for scheelite.

The flotation experiment results showed that scheelite and calcite could be efficiently separated under the following conditions: pulp pH=9.5, NaOL concentration of 1.5×10 −4 mol/L, EDTMPS concentration of 3.0×10 −5 mol/L, a scheelite concentrate with WO 3 grade of 65.49%, recovery of 83.29% and separation efficiency of 65.29% could …

The flotation results showed that at optimal conditions, Pb²⁺ ions could activate scheelite flotation and enhance the depression effects of water glass on the calcite and fluorite flotation ...

The recovery of scheelite from calcium-bearing carbonate ores by flotation is challenging due to its low separation efficiency. This study investigated the effect of pentasodium diethylenetriaminepentaacetate (PD) on the surface properties of scheelite and fluorite. For this purpose, we performed micro-flotation tests and carried …

An efficiently optimized reagent regime was investigated to improve scheelite heating flotation. The scheelite grade and recovery in the plant were significantly improved by 5% and 6%, respectively, which …