Rhenium recovery from Sarcheshmeh molybdenite concentrate

Shariat, M.H.; Hassani, Mohammad Salar

doi:10.1016/s0924-0136(97)00277-x

Cited by 27 publications

(9 citation statements)

References 3 publications

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“…Typically, copper or molybdenum sulphide concentrates recovered from flotation circuits contain 50-100 g/t (ppm) Re (Abisheva et al, 2011). Rhenium then deports during Cu smelting or molybdenite roasting mainly in slimes, flue dusts, or wet scrubbing acid solutions (Kang et al, 2013;Lan et al, 2006;Seo et al, 2012;Shariat and Hassini, 1998;Singh Gaur et al, 2015;Zagorodnyaya et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Recovery of rhenium from a molybdenite roaster fume as high purity ammonium perrhenate

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Recovery of rhenium from a molybdenite roaster fume as high purity ammonium perrhenate

et al. 2015

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“…Meanwhile, rheniite (ReS2) was also oxidized to rhenium (VII) oxide (Re2O7) whose vapor pressure reached 1 atm at 362.4 °C. Thus, rhenium oxide is absent in Figure 10, while molybdite was retained in the calcine during oxidative roasting: 2MoS2 + 7O2 → 2MoO3 + 4SO2 (6) 4ReS2 + 15O2 → 2Re2O7 + 8SO2…”

Section: Phase Transformation In the Roasting Processmentioning

confidence: 99%

Separation of Rhenium from Lead-Rich Molybdenite Concentrate via Hydrochloric Acid Leaching Followed by Oxidative Roasting

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Sun

et al. 2016

Metals

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Lead-rich molybdenite is a typical rhenium-bearing molybdenum resource in China, which has not been efficiently utilized due to its high contents of lead and gangue minerals. In this study, hydrochloric acid was used for preliminarily removing lead and calcite from a lead-rich molybdenite concentrate. Oxidative roasting-ammonia leaching was then carried out for separation of rhenium and extraction of molybdenum. The hydrochloric acid leaching experiments revealed that 93.6% Pb and 97.4% Ca were removed when the leaching was performed at 95 • C for 10 min with HCl concentration of 8 wt. % and liquid-solid ratio of 5 (mL/g). The results of direct oxidative roasting indicated that 89.3% rhenium was volatilized from the raw concentrate after roasting at 600 • C for 120 min in air. In contrast, the rhenium volatilization was enhanced distinctly to 98.0% after the acid-leached concentrate (leaching residue) was roasted at 550 • C for 100 min. By the subsequent ammonia leaching, 91.5% molybdenum was leached out from the calcine produced from oxidative roasting of the acid-leached concentrate, while only 79.3% Mo was leached from the calcine produced by roasting molybdenite concentrate without pretreatment.

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“…Qin et al contrived a new technology for extracted NH 4 ReO 4 with an ion exchanging method [8,9]. Hyun Soo Kim et al recovered rhenium from a molybdenite roaster fume as high-purity ammonium perrhenate [10][11][12][13]. However, there are few reports about influencing factors of the morphology, crystallinity, and purity of NH 4 ReO 4 crystals in the recovery process, which leads to different batches of products having large differences in purity and microscopic morphology.…”

Section: Introductionmentioning

confidence: 99%

Studies on Influencing Factors of Ammonium Rhenate Recovery from Waste Superalloy

et al. 2018

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The influencing factors of ammonia content and centrifugal speed on ammonium rhenate recovery from waste superalloy were systematically analyzed. It was found that proper ammonia content and centrifugal speed could promote crystal growth and a higher purity of ammonium rhenate was obtained. Moreover, the XRD patterns showed that excessive ammonia content and inappropriate centrifugal speed restrained the growth of (101) crystal plane and (112) crystal plane, which caused the crystal structural regularity and relative crystallinity to attenuate. The microscopic morphology and purity of the crystal also changed.

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Rhenium recovery from Sarcheshmeh molybdenite concentrate

Cited by 27 publications

References 3 publications

Recovery of rhenium from a molybdenite roaster fume as high purity ammonium perrhenate

Recovery of rhenium from a molybdenite roaster fume as high purity ammonium perrhenate

Separation of Rhenium from Lead-Rich Molybdenite Concentrate via Hydrochloric Acid Leaching Followed by Oxidative Roasting

Studies on Influencing Factors of Ammonium Rhenate Recovery from Waste Superalloy

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