Molybdenum recovery from molybdenite concentrates by low-temperature roasting with sodium chloride

Aleksandrov, P. V.; Медведев, А. С.; Milovanov, M.F.; Imideev, V. A.; Kotova, S.A.; Moskovskikh, Dmitry

doi:10.1016/j.minpro.2017.02.007

Cited by 29 publications

(4 citation statements)

References 21 publications

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“…Although, a majority of the EMR related studies have led to the development of hazardfree EMR treatment technologies, none of these processes are so far in commercial use due to the need for high levels of additional materials, which results in high costs and additional waste streams. Low-temperature roasting (Mu et al, 2018;Khanlariana et al, 2019), is an eco-friendly and low-cost process that has been widely used for the J o u r n a l P r e -p r o o f treatment of various industrial solid wastes (Li et al, 2014;Cui et al, 2018) and the recovery of valuable materials from secondary resources (Li et al, 2017;Aleksandrov et al, 2017;Aleksandrov et al, 2019;Liu et al, 2019). In this work, a combined low temperature roasting-water washing process was studied for the hazard-free treatment of EMR material.…”

Section: Introductionmentioning

confidence: 99%

Hazard-free treatment of electrolytic manganese residue and recovery of manganese using low temperature roasting-water washing process

Wilson

Lundström

et al. 2021

Journal of Hazardous Materials

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Section: Introductionmentioning

confidence: 99%

Hazard-free treatment of electrolytic manganese residue and recovery of manganese using low temperature roasting-water washing process

Wilson

Lundström

et al. 2021

Journal of Hazardous Materials

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“…An electro-oxidation method has also been developed and reported to be effective in selective leaching Mo from Mo concentrates [22][23][24][25]. Some researchers performed Mo leaching using hydrogen peroxide and oxygen as oxidants [26,27]. The method based on salt roasting was suggested [28].…”

Section: Introductionmentioning

confidence: 99%

Selective Leaching of Molybdenum from Bulk Concentrate by Electro-Oxidation

Chung

Yoon

Kim

et al. 2021

Metals

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This paper proposes selective leaching of molybdenum from Mo/Cu complex bulk concentrates in a 5 M NaCl solution using the electro-oxidation method. Here, the effects of several factors such as pH, pulp density, current density, and temperatures were investigated. A higher leaching yield of Mo increased with increasing pH from 5 to 9 and decreased with increasing pulp density from 1 to 10%. A rise in current density did not help enhance Mo, and the elevating temperature did not always result in a higher leaching yield. Application of ultrasonic led to higher leaching yield of Mo. Ninety-two percent of leaching yield was obtained upon leaching of Mo in 5 M NaCl at 25 °C, pulp density of 5%, and the current density of 0.292 A/g under ultrasonic irradiation with a power of 27 kW. The resultant residue mainly consisted of chalcopyrite.

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“…The advantages lie in no SO 2 emission but the impurities such as iron, calcium, magnesium, phosphorus and arsenic et al are also dissolved in the leaching solutions. In fact, the advantage of leaching molybdenum under basicity and common temperature and pressure conditions from low-grade roasted molybdenite concentrate is in evidence, although the process lets out the harmful gas but it can be deleted through adding Na 2 CO 3 , NaNO 3 or NaCl in roasting process [23][24][25][26][27], but the main existing methods leaching molybdenum with sodium carbonate or ammonium hydroxide aqueous solution need multi-stage leaching process, following more equipment, longer time and lower leaching efficiency [28,29].…”

Section: Introductionmentioning

confidence: 99%

Leaching molybdenum from a low-grade roasted molybdenite concentrate

et al. 2019

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A technique for leaching molybdenum from low-grade roasted molybdenite concentrate was proposed by the aqueous solution containing sodium chlorate and sodium carbonate. The effect of molar ratio of sodium chlorate to molybdenum, leaching time, liquid-solid ratio, leaching temperature, sodium carbonate concentration and agitating speed on leaching rate of molybdenum was studied. The experimental results showed that the temperature and concentration of sodium carbonate are key factors to influence the leaching efficiency of molybdenum, and leaching rate achieves above 98% when the molar ratio of sodium chlorate to molybdenum is up 13.5, the temperature is 343.15 K, the agitating speed is 500 rpm, the liquid-solid ratio is 10:1 and the concentration of sodium carbonate is above 10 g/L. The leaching process was mainly controlled by chemical reaction and mass transfer. The leaching time is shorter and the heavy metal content in leaching aqueous solution is lower in basicity than those in acid situations.

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Molybdenum recovery from molybdenite concentrates by low-temperature roasting with sodium chloride

Cited by 29 publications

References 21 publications

Hazard-free treatment of electrolytic manganese residue and recovery of manganese using low temperature roasting-water washing process

Hazard-free treatment of electrolytic manganese residue and recovery of manganese using low temperature roasting-water washing process

Selective Leaching of Molybdenum from Bulk Concentrate by Electro-Oxidation

Leaching molybdenum from a low-grade roasted molybdenite concentrate

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