A Study on Dexing Copper-Molybdenum Flotation …
The inhibitor was high consumption of low-efficiency of depressant in the separation of copper- molybdenum is bottleneck, which restricts the improvement of the Cu-Mo separation technology. This paper study the Dexing copper-molybdenum flotation separation by using a new small molecule inhibitors named pseudothiohydantoin(DLC) …
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Associative-Distal Mechanism of the Haber–Bosch …
The prevailing dissociative mechanism in the Haber–Bosch (H–B) process requires high temperatures to break the N≡N bond. How to dramatically promote the catalytic activity via mechanism innovation on earth-abundant catalysts is vital to …
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The solvent extraction separation of bismuth and molybdenum …
DOI: 10.1016/J.HYDROMET.2008.12.006 Corpus ID: 97993496; The solvent extraction separation of bismuth and molybdenum from a low grade bismuth glance flotation concentrate @article{Jianguang2009TheSE, title={The solvent extraction separation of bismuth and molybdenum from a low grade bismuth glance flotation …
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Minerals | Special Issue : Flotation Chemistry
Sodium hydrogen sulfide (NaHS) is commonly used as a copper depressant in the selective flotation of copper and molybdenum ores. However, the process is facing health and safety issues because NaHS readily yields toxic hydrogen sulfide gas (H 2 S) under acidic conditions. In this study, Na 2 SO 3 was proposed as an alternative copper …
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Recovery of Molybdenum from Metallurgical Wastewater by …
Flotation experiment demonstrates that the precipitation flotation has a satisfactory effect when the addition amount of cationic surfactant is 20 mg/L, and the turbidity of the purified solution is only 1.325. ... Study on the removal of molybdenum from water by chemical precipitation. Water Supply Technol 5:26–27+31. Google Scholar …
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Asia-Pacific Journal of Chemical Engineering
Mechanical stirring during the flotation conditioning process is a commonly employed and efficient method to enhance the effectiveness of slurry conditioning. …
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Review of the flotation of molybdenite. Part I: Surface …
This paper reviews the surface chemistry and floatability of molybdenite, usually by-product in Cu/Mo sulfide ores. Oil collectors are used to improve molybdenite flotation and the comparison with thiol collectors is discussed. Some inorganic ions are strong molybdenite depressants, such as, calcium ions and lime.
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Recent progress on research of molybdenite flotation: A …
The high-purity, chemical-grade molybdenum concentrates produced in these two mines were further processed to ach ieve value-added final products.[20] Table 1 Molybdenum: World Mine Productio n by ...
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Comprehensive Electrochemical-Chemical Study of Copper …
Molybdenite is the most important molybdenum concentrate, which is mainly recovered as a by-product from porphyry copper deposits. Due to the low efficiency of purification processes such as flotation in the reduction of copper content of molybdenum concentrate to a standard level (i.e., less than 0.5 wt.%), further …
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Improving the Copper-Molybdenum Ores Flotation …
The main mineral of molybdenum is mo-lybdenite −0.012%. Sulfide minerals of pyrite are present in amounts up to 0.5%. According to the X-ray phase analysis, the content of the rock-forming ...
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[PDF] Analysis of technological schemes and substantiation …
DOI: 10.17580/NFM.2019.01.01 Corpus ID: 199172192; Analysis of technological schemes and substantiation of the selection of the reagent regimes for copper-molybdenum ores flotation
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A study of mechanisms affecting molybdenite recovery in a …
DOI: 10.1016/J.MINPRO.2009.10.001 Corpus ID: 98756888; A study of mechanisms affecting molybdenite recovery in a bulk copper/molybdenum flotation circuit @article{Zanin2009ASO, title={A study of mechanisms affecting molybdenite recovery in a bulk copper/molybdenum flotation circuit}, author={Massimiliano Zanin and I. M. …
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Recent Progress on Research of Molybdenite Flotation: …
3 and the Climax open pit mine. The high-purity, chemical-grade molybdenum concentrates produced in these two mines were further processed to achieve value-added final products.[20]
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Improving the Copper-Molybdenum Ores Flotation …
The main mineral of molybdenum is mo-lybdenite −0.012%. Sulfide minerals of pyrite are present in amounts up to 0.5%. According to the X-ray phase analysis, the content of the rock-forming minerals is 96% and is represented by quartz, albite, clinochlore, feldspar, chlorite, potassium mi-croplagioclase and sericite.
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Review of the flotation of molybdenite. Part I: Surface …
Current challenges in froth flotation are the presence of complex gangues and the use of low-quality waters, such as seawater. In this scenario, the recovery of molybdenum minerals is difficult, … Expand
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A process mineralogy approach to optimize molybdenite flotation …
DOI: 10.1016/j.mineng.2020.106557 Corpus ID: 224911691; A process mineralogy approach to optimize molybdenite flotation in copper – molybdenum processing plants @article{Abdollahi2020APM, title={A process mineralogy approach to optimize molybdenite flotation in copper – molybdenum processing plants}, author={Morteza Abdollahi and …
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Increasing Efficiency of Copper-Molybdenum Ore Flotation …
This allowed applying the technique to measuring residual concentration of AeroMX- 5140 collector in the operation of bulk sulphide flotation in copper-molybdenum ore beneficiation.
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A Rapid Adsorbing Colloid Flotation Method for the …
Abstract A procedure is described whereby the molybdenum in a 500-ml seawater sample is brought to the surface in 5 min by an adsorbing colloid flotation process which utilizes iron(III) hydroxide, sodium dodecyl sulfate, and air. Statistical studies on a test series for recovery of molybdenum by means of spectrophotometric analysis show a mean …
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Effect of clay slimes on copper, molybdenum flotation from porphyry
As an alternative solution, flotation at reduced pulp density (24%) improved the grade and the recovery of copper and molybdenum and decreased the grade and recovery of Al 2 O 3 and SiO 2 in ...
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Minerals | Free Full-Text | Substantiation of New …
The sample of the copper–molybdenum rhenium-containing porphyry ore from one of the Russian deposits was selected for ore flotation tests. The initial content of copper, molybdenum and rhenium …
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Review of the flotation of molybdenite. Part I: …
Molybdenite is the main mineral for molybdenum extraction, which coexists with chalcopyrite in porphyry copper deposits. However, the separation of molybdenite …
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Recent progress on research of molybdenite …
Molybdenite is naturally floatable and can be separated from copper sulfide mineral using froth flotation. Properties of molybdenite such as mineralogy, …
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(PDF) Enrichment of Molybdenum and Fluorite by Flotation …
Enrichment of Molybdenum and Fluorite by Flotation of Fluorite Ore Containing Molybdenum . × ... there have been numerous reports on the modification of the chemical scheme in fluorite flotation, in order to increase the separation efficiency and lower the operation costs. It was [1] reported that methanoic acid could selectively adsorb onto ...
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A study of mechanisms affecting molybdenite recovery in …
The low and highly variable flotation recovery of molybdenum may be a result of several factors, all related to the properties of the molybdenite (MoS 2) mineral.Molybdenite crystal structure consists of hexagonal layers of molybdenum atoms between two layers of sulphur atoms (Fig. 2).Strong covalent bonds act within S–Mo–S …
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Gangue Depressant in Molybdenum Flotation
A representative sample of the first-stage cleaner flotation feed in the mill was obtained for this study. The sample assayed 6.2 percent MoS2, 13.5 percent FeS2, 0.108 percent Cu, and 0.026 percent Pb. The bench-scale flotation tests were performed in a 4.5-liter Denver D12 flotation machine. Concentrates were collected at cumulative …
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Molybdenum Flotation
A Molybdenum Flotation case study with about 6% of the molybdenum contained in the feed is present as an oxide form and about 90% of this is not recovered to the flotation concentrate. Recovery of molybdenum into the rougher concentrate varied between 90 to 95% at a concentrate grade of 2.5 to 3.7% molybdenum. The rougher …
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Evaluation of the replacement of NaCN with depressant
The Mo-Cu bulk concentrate used for bench-scale flotation was obtained from China Molybdenum Co ... depression of unwanted minerals in chalcopyrite flotation. The origin and chemistry, organic ...
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Evaluation of the replacement of NaCN with depressant …
Therefore, the bulk concentrates processes characteristics of a higher grade of molybdenum but a lower grade of copper. The bulk concentrate, which was obtained from the China Molybdenum Co., Ltd, with 0.95% Cu and 7.23% Mo collected from a day shift, was used for the flotation separation of copper-molybdenum sulphides in all of …
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Molybdenite flotation from copper/molybdenum …
product recovery of molybdenite by flotation from bulk copper/ molybdenum concentrates. For this flotation system a number of different reagents are used, including alkali sulfides, Nokes reagents, cyanides, chemical oxidants, and/or thermal treatment for depression of the copper sulfide minerals (Sutulov, 1970;
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Minerals | Free Full-Text | Enhanced Flotation Recovery of Fine …
Molybdenum is an important metal with a wide range of applications in metallurgy, the chemical industry, etc. [1,2].Molybdenite is the principal mineral in molybdenum extraction, and it is recovered from Mo-Cu ores or molybdenum ores using the froth flotation technique [3,4,5].However, molybdenite is an anisotropic mineral with …
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