Molybdenum is a valuable by-product in the processing of porphyry copper deposits, ... Common methods of chemical purification of molybdenite concentrates used by the copper industry include ferric chloride leaching, hydrochloric acid leaching and cyanide leaching (Dorfler and Laferty, 1981, Gupta, 1992). In practice, these processes …
DetailsThe study of the leaching of vanadium (V) and molybdenum (Mo) from spent petrochemical catalysts in sodium hydroxide (NaOH) medium was performed using two approaches, namely, conventional leaching and microwave-assisted leaching methods. The influence of microwave power, leaching time, leaching temperature, and NaOH …
DetailsProceedings of EMC 2019 821 Ferric and Cupric Chloride Leaching of Valuable Metals from Process Residues Pelin Altinkaya1, 2, Ivan Korolev1, 2, Eero Kolehmainen1, Mika Haapalainen1, Mari Lundström2 1 Outotec Research Center, P.O. Box 69, Kuparitie 10, 28101 Pori, Finland 2 Aalto University, School of Chemical Engineering, P.O. Box …
DetailsCalcination treatment of Li-bearing clay is a necessary step in the ion exchange leaching process, and the calcination temperature has been investigated by using sulfuric acid for leaching (Gu et al., 2020a).The Li-bearing clay calcined at various temperatures (400, 500, 600, 700, and 800 °C) was leached using a 15% ferric sulfate …
DetailsTable 7.3 Overview of molybdenum leaching methods from spent catalysts and molybdenum leaching yield (%) achieved ... ferric oxide gel (Ryden et al. 1987) and iron-based adsorbents (Dodbiba et al. 2011) have been used for the ... Nguyen TH, Sohn S, Lee MS (2013) Separation of Mo from chloride leach liquors of petroleum …
DetailsIn the hydrochloric acid–ferric chloride leaching system, under the conditions of hydrochloric acid concentration of 4.0 mol/L, liquid–solid ratio of 7:1, ferric chloride dosage of 4% ...
DetailsSeawater is now being increasingly used for mineral beneficiation and metal extraction processes (Hernández et al., 2015). A specific application of seawater is for heap leaching of copper secondary sulfides, mainly chalcocite. ... In a research on the ferric chloride leaching of a synthetic covellite mineral, Miki and his co-workers obtained ...
Details2.2 General leaching procedure. 1 L aqueous ferric chloride solution with a predetermined concentration was mixed with 10 ml of a 1 mol·L −1 hydrochloric acid solution, to inhibit the hydrolysis of ferric ion, and then, the mixture was poured into a glass reactor with a double vane agitator. A condenser with continuous water supply was fitted …
DetailsNow, China is still recovering from a copper-molybdenum ore beneficiation of molybdenum, copper and molybdenum is commonly bulk flotation process, and thus copper-molybdenum separation and selection of molybdenum concentrate. ... ferric chloride leaching method except molybdenum concentrate impurities. Some of the …
DetailsIn this study, the trial procedure includes oxidation roasting, ammonia/ammonium nitrate optimization for roasted molybdenum concentrate leaching, and the effects of other parameters on the leaching process.
DetailsCase 6 - A chloride-based solution was used to dissolve gold from a free-milling gold ore (Ahtiainen and Lundström, 2019). ® Leaching solution: The solution used in this work was a mixture of copper (II) and calcium chloride - chloride (2.8 M), cupric (0.1 M) and activated carbon (18 g/L). ®
DetailsThe processing of iron ore generates large volumes of tailings. Acid leaching enables the solubilization of iron in an aqueous solution, allowing the production of ferric liquor and a silica-rich ...
DetailsDOI: 10.1016/J.SEPPUR.2006.02.013 Corpus ID: 98322004; A study on the acidified ferric chloride leaching of a complex (Cu–Ni–Co–Fe) matte @article{Park2006ASO, title={A study on the acidified ferric chloride leaching of a complex (Cu–Ni–Co–Fe) matte}, author={Kyung Ho Park and Debasish Mohapatra and B. Ramachandra Reddy}, …
DetailsFinally, it can be leached with hydrochloric acid or hydrochloric acid plus ferric chloride solution. In the separation of carbonaceous minerals, it is first necessary to find out …
DetailsAccording to Granata et al. (2019), the potassium iodide (KI) was inferred as one of potential alternatives to ferric chloride in chalcopyrite leaching. The chalcopyrite leaching reaction in the potassium iodide, sulfuric acid and ferric ion media could be described in Eq. (26). The second stage of chalcopyrite leaching assisted by KI was ...
DetailsSeawater is a potential water source for mineral beneficiation and metal extraction processes. With a focus on using seawater for heap leaching, we investigated and modelled the kinetics of chalcocite leaching with ferric chloride. ... Miki et al. (2011) showed that the rate of covellite leaching in ferric chloride media was limited by the ...
DetailsDOI: 10.1016/S0304-386X(99)00021-3 Corpus ID: 97573544; Ferric chloride leaching of a mechanically activated pentlandite–chalcopyrite concentrate @article{Maurice1999FerricCL, title={Ferric chloride leaching of a mechanically activated pentlandite–chalcopyrite concentrate}, author={David Maurice and Jeffrey A. Hawk}, …
DetailsThe U.S. Bureau of Mines investigated an alternative process to smelting for the production of lead metal. The process eliminates sulfur dioxide generation and minimizes particulate lead emissions. The process involves ferric chloride leaching of galena concentrate...
DetailsThe partly oxidized residue consisting of molybdenite and iron (hydro-) oxide can be treated by means of flotation or oxygen pressure leaching in alkaline media to extract …
DetailsExtensive exploration has resulted in delineation of a massive sulfide district on the north flank of the east-central Alaska range. The district covers approximately 400 square miles and contains numerous stratiform; transported and some replacement type sulfide deposits ranging in size from less than 1 million tons to 20 million tons. Five types …
DetailsThe optimal leaching conditions were a three-stage successive leaching, temperature 80 °C, leaching time 2 h and S/L ratio 0.25 g L −1. Under these conditions, 85.5% of Mo …
Detailsleach solution or presence of chloride ions would result in a loss of silver, a large economic factor. A cheaper catalyst, if available, could make this process more attractive. Ferric …
DetailsThis study investigated the effects of grinding speed and time, molar ratio of sodium chlorate (NaClO 3, oxidant) to MoS 2, leaching time and temperature on the leaching …
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DetailsIncluded with the milling facility is a ferric chloride leach plant for removal of copper mineralization from the molybdenite concentrates. Discussed are the engineering and construction schedules associated with the leach plant. ... Molybdenum concentrates are transported from the Nevada Moly concentrator via bulk truck and are fed into one of ...
DetailsFinally, it can be leached with hydrochloric acid or hydrochloric acid plus ferric chloride solution. 3. In the separation of carbonaceous minerals, it is first necessary to find out …
DetailsPotential has a vital effect on chalcocite leaching, especially in the second stage. Cheng and Lawson found that ferric ions have an important influence on chalcocite dissolution and remarkably improve the leaching rate of chalcocite. 22 Miki further found that when the potential was about 500 mV vs. Ag/AgCl, 24 the initial leaching rate of …
DetailsIron ore tailing was used as a raw material for the production of ferric chloride. • Leaching studies were carried out with hydrochloric acid. • Best results were attained with a 10.8 mol L-1 of HCl, a temperature of 80°, and a leaching time of 120 min. • The procedures allowed 94% recovery of iron present in the iron ore tailing. •
DetailsPE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
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