The developed Pb-BHA complexes and the novel flotation process effectively increased the recovery of scheelite and wolframite, simplified the technological process, and led to reduced costs. ... a zeta potential analyzer (ZetaPlus; Bruker, Germany). Mineral suspensions containing 0.02 g of solids and 40 mL of KCl (0.01 …
DOI: 10.1016/j.ijmst.2022.12.003 Corpus ID: 255668269; Flotation separation of wolframite from calcite using a new trisiloxane surfactant as collector @article{Shuai2023FlotationSO, title={Flotation separation of wolframite from calcite using a new trisiloxane surfactant as collector}, author={Shuyi Shuai and Zhiqiang Huang and …
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 …
1. Introduction. Scheelite is a principle tungsten mineral that has become the main source of tungsten metal in China. Scheelite is usually associated with other calcium-bearing minerals in ore deposits, from which it almost must be separated by means of flotation (Hu et al., 2012, Shepeta et al., 2012).The flotation separation of scheelite …
In this work, two collectors sodium oleate (NaOL) and benzohydroxamic acid (BHA) were used to study the synergic effect in wolframite flotation. The flotation behaviour of these collectors was investigated at various NaOL:BHA ratios. Results show that the mixtures of NaOL with BHA of different ratios result in large improvements in the …
Semantic Scholar extracted view of "In situ geochemistry and Sr–O isotopic composition of wolframite and scheelite from the Yaogangxian quartz vein-type W(−Sn) deposit, South China" by Hua Jiang et al. ... Exploring a clean organic carboxylic acid depressant for flotation separation of tungsten-tin minerals. Qifang Zheng Liuyang …
However, scheelite can replace wolframite and, because of different structure and density, the mineral volume changes by about 15%. Physical Properties. ... Abundant scheelite is known from the Zinnwald/Cinovec deposit in Germany and Czech Republic. The German part called Altenberg continues across the border to Cinovec in …
A linear correlation between free energy and enthalpy for crystalline and soluble oxocompounds based in the Sverjensky–Molling equation is used to calculate the Gibbs free energies of formation of MnWO4 (−1172.48 ± 12.76 kJ mol−1), H2WO4 (−1006.91 ± 10.36 kJ mol−1), and Na2WO4 (−1455.39 ± 12.81 kJ mol−1). Using these …
Introduction. Tungsten, as a rare and critical strategic material extensively employed in science and technology, need be recycled reasonably, thus the efficient utilization of tungsten resources become particularly important [1], [2], [3].As a typical tungsten bearing mineral, wolframite ((Fe, Mn) WO 4) is widely exploited to extract …
The separation and extration of tin and tungsten from wolframite e scheelite mixed ore with high tin content is urgently needed given the increasingly exhaustion of the high-grade tungsten ore.
DOI: 10.1016/J.MINENG.2019.106053 Corpus ID: 108593691; Replacing Petrov's process with atmospheric flotation using Pb-BHA complexes for separating scheelite from fluorite @article{Han2019ReplacingPP, title={Replacing Petrov's process with atmospheric flotation using Pb-BHA complexes for separating scheelite from fluorite}, author={Hai …
After an objective assessment of inorganic and organic depressants' advantages and disadvantages, possible future research directions for inorganic and …
The development of scheelite flotation reagents in the future is envisioned, aiming at achieving efficient flotation enrichment of scheelite, reduce production costs and …
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 flotation, …
The metal–organic complex collector has demonstrated broad application prospects in the flotation of scheelite, wolframite, cassiterite, ilmenite, and other oxidation minerals. However, the ...
This explains why lead nitrate is able to activate scheelite (and wolframite) for its flotation with BHA. Han, Haisheng et al. [48] showed that scheelite can be well …
Semantic Scholar extracted view of "Exploring the clean flotation mechanism towards wolframite using NaClO as an oxidant" by Jing Qi et al. ... Strengthening flotation enrichment of Pb(Ⅱ)-activated scheelite with N-[(3-hydroxyamino)-propoxy]-N-hexyl dithiocarbamate. Jing Qi Gang Zhao Sheng Liu Wei Chen Guangyi Liu.
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 flotation, zeta potential measurements and density functional theory (DFT). The micro flotation results showed …
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 remarkably augmented the economic profit by $260,000 per month. The interaction mechanisms of sodium sulfide …
With the depletion of wolframite, scheelite has become the main source of tungsten resources worldwide. Scheelite is mainly recovered by flotation, a mineral …
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, …
Micro-flotation tests proved that NPOHA possessed much stronger collecting ability to wolframite than BHA and OHA, with superb flotation selectivity against quartz and fluorite, which was regarded ...
While both scheelite and cassiterite exhibit good floatability when NaOL is used as a collector, the addition of depressant SS considerably decreases the floatability of cassiterite and exerts a relatively small depression effect on scheelite. The flotation separation test of artificial mixed minerals indicated that at pH 10, while the recovery ...
Tungsten Deposits, Resources, and Supply. Several tungsten minerals have been reported in the literature, but only scheelite (CaWO 4) and wolframite [(Fe,Mn)WO 4] are of economic importance and nowadays exploited for primary tungsten extraction (Pitfield et al., 2011; Audion and Labbé, 2012; Schmidt, 2012a,b; Yang, 2018).Wolframite is a …
This paper reviews the scheelite flotation reagents, including collectors and regulators, and introduces recent research progress on the mechanisms for the interactions …
Semantic Scholar extracted view of "Effects of surface electrical property and solution chemistry on fine wolframite flotation" by Xiuli Yang et al. ... A wolframite and scheelite associated ore contains lots of gangue minerals abundant with calcium and magnesium,which affects the recovery of tungsten.In order to solve the technical …
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 …
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.
Micro-flotation tests were conducted on the pure mineral to investigate the effects of Pb(II) on wolframite floatability. As shown in Fig. 2, the wolframite floatability with solely BHA collector was low.A maximum recovery of approximately 26% was obtained at pH around 8.5 when adding 5.8 × 10 −4 mol/L (corresponding to 1.6 kg/ton) BHA, …
The separation and extration of tin and tungsten from wolframite – scheelite mixed ore with high tin content is urgently needed given the increasingly exhaustion of the high-grade tungsten ore. However, current tungsten hydrometallurgy technologies suffer from considerably drawbacks, such as low recovery of tin, high …
