The technology of molybdenum extraction from molybdenite concentrate by using potassium chlorate (KClO 3) or sodium chlorate (NaClO 3) has been investigated.
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Up to 65% of copper content of molybdenite concentrate was removed via bioleaching with a native strain of A. ferrooxidans in less than 15 days. Ferrous sulfate, sulfur or pyrite was added to ...
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In a copper‑molybdenum processing plant, copper sulfide concentrate (such as chalcopyrite) is floated together with molybdenite in the first stage. [7] The separation of molybdenite and copper sulfide is achieved in the second stage through flotation. [8] In most scenarios, copper sulfides, such as chalcopyrite, are depressed using a depressant (e.g. …
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DOI: 10.1016/J.MINPRO.2014.02.003 Corpus ID: 95624381; Mesophilic and thermophilic bioleaching of copper from a chalcopyrite-containing molybdenite concentrate @article{Abdollahi2014MesophilicAT, title={Mesophilic and thermophilic bioleaching of copper from a chalcopyrite-containing molybdenite concentrate}, author={Hadi Abdollahi and Sied …
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Semantic Scholar extracted view of "Oxidation roasting of molybdenite concentrate" by Lu Wang et al. ... The paper discusses methods of processing copper-containing molybdenite concentrates. A process flow diagram based on roasting with sodium chloride (or carbonate) and subsequent water leaching is … Expand. 2. 1 Excerpt;
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At both locations, the recovery of copper is the prime target; however, substantial quantities of molybdenum are also recovered. The molybdenum-containing mineral (molybdenite) is obtained from the ore at the mines by a series of crushing, grinding and flotation operations, which produce a concentrate consisting primarily of the molybdenite ...
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The present research reports on the selective dissolution of copper and iron from a Chilean molybdenite concentrate using mesophilic, moderate and extreme thermophilic culture bacteria. From the resu...
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The leaching of the sulfidized molybdenite concentrate for 90 min at 100 °C dissolved 96% of the copper which yielded a final concentrate with less than 0.2% Cu.
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The paper discusses methods of processing copper-containing molybdenite concentrates. A process flow diagram based on roasting with sodium chloride (or carbonate) …
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Alkaline leaching of copper concentrate bearing molybdenite was investigated. Thermodynamic analysis of Mo-S-H2O and Cu-Fe-S-H2O indicates that alkaline leaching of copper concentrate is feasible ...
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The basic design for an 80-t/day plant fed with 4 wt% copper molybdenite concentrate requires five backmixed reactors in series, each measuring 8 m3, operating at …
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In this study, the selective dissolution of copper and iron from the molybdenite (MoS 2) concentrate consisting of chalcopyrite and pyrite by acidic sodium nitrate leaching has …
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Semantic Scholar extracted view of "Copper removal from molybdenite concentrate by sodium dichromate leaching" by M. C. Ruiz et al. Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 221,614,655 papers from all fields of science. Search ...
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Up to 65% of copper content of molybdenite concentrate was removed via bioleaching with a native strain of A. ferrooxidans in less than 15 days. Ferrous sulfate, sulfur or pyrite was added to ...
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Separation of chalcopyrite from molybdenite is currently mainly carried out by flotation, but this process is costly because of the extensive use of inhibitors. This study briefly describes a 7.0T/100CGC low-temperature superconducting magnetic separator and discusses its separation principle as well as the effect of magnetic induction on chalcopyrite separation from …
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1. Introduction. Molybdenite (MoS 2) concentrates are commonly obtained as byproduct in the treatment of copper porphyry ores in which the molybdenite is a minor constituent.The conventional process to separate molybdenite from the bulk copper–molybdenum concentrate is differential flotation, which includes successive …
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The kinetics of molybdenum and copper extraction from Sarcheshmeh molybdenite concentrate (Kerman, Iran) was studied by electroleaching process in batch mode. The effects of several critical parameters including sodium chloride concentration, pH, temperature, time, operating voltage, and the sodium carbonate addition on the molybdenum …
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Molybdenite concentrates produced from porphyry copper deposits contain copper as an impurity in variable quantities. To produce a high-grade molybdenite concentrate, a chemical purification method is normally practiced. In this paper, a new alternative for the copper elimination from molybdenite concentrates containing chalcopyrite by sulfidation of …
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In recent years, there has been an increasing focus on the hydrometallurgical processing of molybdenite, with the decline of high-grade and easily handled molybdenum minerals. In this work, a novel method of selective extraction of complex molybdenite concentrate, which is characteristic of high-grade copper ore, has been in-vestigated.
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The molybdenite concentrate obtained from the Sarcheshmeh copper complex (Sarcheshmeh, Iran) was used as the source of molybdenum. The chemical composition obtained by XRF is presented in Table 1. As it is seen, the concentrate contains 52% Mo and 35% sulfur. Therefore, the molybdenum percentage in each experiment could be calculated readily.
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The molybdenum concentrate used in the experiments is produced from copper ore and contains a significant amount of Cu. Since the behavior of Cu during roasting of MoS 2-based concentrate is also important, Mo-O-S and Cu-O-S systems were investigated together in the thermodynamic analysis.. In this part, all graphs are drawn with the FactSage program.
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COLUMN FLOTATION TO RECOVER MOLYBDENITE FROM RAKHA COPPER CONCENTRATE, INDIA. PART II: DEWATERING STUDIES AND THE CLEANER CIRCUIT @inproceedings{Rao1998COLUMNFT, title={COLUMN FLOTATION TO RECOVER MOLYBDENITE FROM RAKHA COPPER CONCENTRATE, INDIA. PART II: DEWATERING …
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The leaching of the sulfidized molybdenite concentrate for 90 min at 100 °C dissolved 96% of the copper which yielded a final concentrate with less than 0.2% Cu.
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The MoS 2-containing ore at the Sarcheshmeh Copper Complex also contains Cu-bearing minerals.The MoS 2-containing fraction is separated from Cu-sulfides with a rougher and seven sequential flotation cells in a four series bank.In this process, the molybdenite concentrate is moved to the next stage and the Cu-bearing tailing is diverted to the previous …
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Bioleaching at thermophilic temperatures (70 °C) yielded up to 75% Cu dissolution from the concentrate at 6% (w/v) pulp density, whereas the yields were about 27% at …
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In recent years, there has been an increasing focus on the hydrometallurgical processing of molybdenite, with the decline of high-grade and easily handled molybdenum minerals. In this work, a novel method of selective extraction of complex molybdenite concentrate, which is characteristic of high-grade copper ore, has been investigated. The …
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The molybdenite concentrate comprises 43.55 wt% Mo, belonging to low-grade molybdenum ore. The rhenium in concentrate reaches 321 g/t, which demonstrate the great value for recovering Re. ... FeCl 2 +) are easy to dissolve in medium or acid water solution, while different complexes of copper–chlorine and lead–chlorine (CuCl, CuCl 2, PbCl 2 ...
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With additional FeS2 (test 10), the concentration of Fed increased relatively slowly as the result of pyrite oxidation. 3.2. Bioleaching of 6% (w/v) molybdenite concentrate in 9 K medium formulation The bioleaching of Cu in 6% (w/v) molybdenite concentrate pulp was tested at three temperatures (Fig. 4).
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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 ...
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Up to 65% of copper content of molybdenite concentrate was removed via bioleaching with a native strain of A. ferrooxidans in less than 15 days. Ferrous sulfate, sulfur or pyrite was added to ...
WhatsApp: +86 18221755073
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