Recovery of tungsten by liquid–liquid extraction from a …

This work presents the results of the tungsten recovery from a wolframite concentrate (61.5% WO3) from Igarapé Manteiga (Rondônia — Brazil) after fusion with …

Sustainable and efficient extracting of tin and tungsten …

The results of bench-scale flotation experiments showed that the WO3 recovery of wolframite concentrate with 180 g/t SHA was 10.05% higher than that with 360 g/t BHA and 300 g/t Pb(NO3)2.

A sustainable process for tungsten extraction from …

The objective of this study is to develop a method to maximize the recovery tungsten and molybdenum from a low-grade scheelite via a new acid leaching process …

A Fundamental Study on the Preparation of Sodium …

A commercial wolframite concentrate (particle size less than 0.075 mm) was used in the present study, and its dry composition is shown in Table 1. Analytical grades of sodium carbonate and silica were used for the decomposition of the wolframite. ... Direct recovery of tungsten in the form of sodium tungstate can be as high as 96%. However, …

Processing of Tungsten Preconcentrate from Low Grade Ore …

At optimum conditions, a tungsten concentrate having a grade of 30.85% WO 3 with 75.72% recovery was obtained. This concentrate was further upgraded by magnetic separation to 34.11% W0 3 with more ...

Tungsten and arsenic substance flow analysis of a

The results showed that, the total tungsten resource efficiency of the system was 97.56%, and the tungsten recovery of unit process autoclaved alkali leaching, ion exchange, Mo removing, concentration and crystallization was 98.16%, 98.94%, 99.71%, 99.89%, respectively. ... Table 3 shows the contents of main elements in wolframite …

A sustainable process for tungsten extraction from …

Aiming to explore a sustainable process for tungsten extraction from wolframite concentrate, the digestion behavior and mechanism of wolframite in HCl …

Mechanochemical Treatment of Historical Tungsten Tailings …

Innovative tungsten (W) extraction techniques are continually being sought because of challenges of low leaching efficiencies, despite using advanced processing units such as autoclaves operating high temperatures and pressures. Compared to conventional leaching, mechanochemical treatment improves the efficiency of leaching. Therefore, in …

Recovery of tungsten by liquid–liquid extraction from a wolframite …

This work presents the results of the tungsten recovery from a wolframite concentrate (61.5% WO3) from Igarapé Manteiga (Rondônia — Brazil) after fusion with NaOH followed by leaching with water.

Sustainable and Efficient Recovery of Tungsten from Wolframite …

Recovery of wolframite from tungsten mine tailings by the combination of shaking table and flotation with a novel "crab" structure sebacoyl hydroxamic acid. ... Wolframite concentrate conversion kinetics and mechanism in hydrochloric acid. Minerals Engineering 2022, 179, 107422.

Studies on the recovery of tungsten from a composite …

Studies on the recovery of tungsten from a composite wolframite–scheelite concentrate | Semantic Scholar. DOI: 10.1016/S0304-386X …

Recovery of wolframite from tungsten mine tailings by the

Bench-scale flotation tests indicated that SHA can effectively recover wolframite concentrate with 55.64% WO 3 grade and 75.28% WO 3 recovery from …

Recovery of tungsten by liquid–liquid extraction from a …

Recovery of tungsten by liquid–liquid extraction from a wolframite concentrate after fusion with sodium hydroxide | Semantic Scholar. DOI: …

An Integrated Process for the Recovery of Tungsten and Tin …

An Integrated Process for the Recovery of Tungsten and Tin from a Combined WOLFRAMITE-SCHEELITE-CASSITERITE Concentrate

Sustainable and Efficient Recovery of Tungsten …

This study provides an effective countermeasure to make the sulfuric acid and phosphoric acid system suitable for the …

AN INTEGRATED PROCESS FOR THE RECOVERY OF TUNGSTEN …

This article presents results of the studies on development of viable process route for quantitative recovery of tungsten and tin values occurring together in the form of a multimineral concentrate of wolframite, scheelite, and cassiterite. The investigations were carried out using a tin–tungsten multimineral ore from Kyrgyzstan (Central Asia).

Recovery of Tungsten and Molybdenum from Low-Grade Scheelite

With most high-quality tungsten ores being exhausted, the enhancement of low-grade scheelite concentrates processing has attracted a great deal of attention. The objective of this study is to develop a method to maximize the recovery tungsten and molybdenum from a low-grade scheelite via a new acid leaching process followed by …

A sustainable process for tungsten extraction from …

A sustainable process for tungsten extraction from wolframite concentrate. YuanlinChenab, GuangshengHuoa, XueyiGuoab, QinmengWangab. Show more. Add to …

Extracting Tungsten from Wolframite Gold Ore

The flotation tailing is hydraulically or mechanically classified and tabled to produce a finished high grade tungsten concentrate, a middling product, and a final tailing. The table middling is pumped back to the rod mill for regrinding after being dewatered in a spitz-type dewaterer. Buckman Tilting Concentrator to recovery Wolframite

An integrated process for the recovery of tungsten and tin …

The R and D work carried out on purification and recovery of tungsten as tungstic oxide/ammonium paratungstate (APT) from a number of off-grade products such as table concentrate (WO3=66%, SiO2=2 ...

Studies on the recovery of tungsten from a composite wolframite …

DOI: 10.1016/S0304-386X(00)00126-2 Corpus ID: 93280495; Studies on the recovery of tungsten from a composite wolframite–scheelite concentrate @article{Srinivas2000StudiesOT, title={Studies on the recovery of tungsten from a composite wolframite–scheelite concentrate}, author={K. Srinivas and T. Sreenivas …

Recovery of tungsten by liquid–liquid extraction from a wolframite …

DOI: 10.1016/J.HYDROMET.2012.07.018 Corpus ID: 93818263; Recovery of tungsten by liquid–liquid extraction from a wolframite concentrate after fusion with sodium hydroxide @article{Paulino2012RecoveryOT, title={Recovery of tungsten by liquid–liquid extraction from a wolframite concentrate after fusion with sodium hydroxide}, author={J{'e}ssica …

Sustainable and Efficient Recovery of Tungsten from …

Sustainable and Efficient Recovery of Tungsten from Wolframite in a Sulfuric Acid and Phosphoric Acid Mixed System. August 2020. ACS Sustainable …

Recovery of wolframite from tungsten mine tailings by the …

Bench-scale flotation tests indicated that SHA can effectively recover wolframite concentrate with 55.64% WO 3 grade and 75.28% WO 3 recovery from wolframite tailings by the combined shaking table-flotation process. Polarized light microscope observations showed that SHA could promote the formation of hydrophobic …

Wolframite concentrate conversion kinetics and mechanism …

The wolframite concentrate was provided by Jiangxi Tungsten Group Co., Ltd., China, and contained WO 3 69.50%, Fe 11.12%, and Mn 6.56% as the main compositions as presented in Table 1. The X-ray diffraction (XRD) pattern of the concentrate (Fig. 1) showed that it was with high content of wolframite [(Fe,Mn)WO 4 …

Sustainable and efficient extracting of tin and tungsten …

A beneficiation study indicated that beneficiating wolframite-scheelite mixed ore with approximately 40% WO 3 content can guarantee a higher metal recovery ratio, instead of producing standard tungsten concentrate which tin content was controlled less than 0.3% (Lv and Mao, 2018; Hu et al., 2018). However, some associated ores such as ...

Leaching Behavior and Mechanism of Scheelite and Wolframite …

Acid leaching is considered an appropriate method for the tungsten concentrate treatment. However, it is difficult to leach wolframite efficiently. To reveal the origin of this behavior, the leaching behaviors of scheelite and wolframite in treating a mixed scheelite–wolframite concentrate by hydrochloric acid and the leaching …

Wolframite Processing: Maximizing the Value of Tungsten …

The tungsten concentrate after iron removal mainly consists of wolframite and vein minerals. Therefore, we employed strong magnetic separator once again for wolframite concentration to enhance the recovery of tungsten slimes. Through strong magnetic separation, we obtained a tungsten concentrate with a WO 3 grade of …

Recovery of wolframite from tungsten mine tailings by

Bench-scale flotation tests indicated that SHA can effectively recover wolframite concentrate with 55.64% WO3 grade and 75.28% WO3 recovery from wolframite tailings by the combined shaking table ...

Review of tungsten resource reserves, tungsten concentrate …

The fine- particle tungsten (<0.037 mm) from the tailings of a wolframite plant in Jiangxi Province of China Xu WANG, et al/Trans. Nonferrous Met. Soc. China 32(2022) 2318âˆ'2338 2323 was recovered by a centrifuge concentrator, and wolframite concentrate with a grade of 30.54% and recovery of 63.74% could be obtained [53].

Fundamental studies for high temperature processing of tungsten …

The first step in the production of tungsten is to enrich tungsten from two minerals wolframite ((Fe, Mn)WO4) and scheelite (CaWO4) through the leaching process. The leaching residue usually contains a certain amount (2–5 wt%) of WO3 which is higher than that in the tungsten ore (generally less than 1 wt%). In addition, the leaching …