Technical challenges in the flotation of molybdenite from porphyry …
Molybdenite is a valuable by-product in copper flotation. Driven by economic considerations, the recovery of molybdenite from low-grade porphyry copper ores has become of great interest in the ...
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Model Discrimination in the Flotation of a Porphyry Copper …
Numerous flotation models have been proposed in the literature. Thirteen of these have been applied to batch flotation data and evaluated with respect to one another using statistical techniques.Flotation tests were carried out on samples of a US porphyry copper ore (Pinto Valley, AZ). The ore was tested using various collector and frother …
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An Innovative Sensor-Based Approach for Evaluating …
To overcome this obstacle and improve overall performance, an innovative approach for flotation circuit evaluation was designed and set up, to improve understanding of the nature of the mineral losses, benchmark the cell hydrodynamics as a platform to improve flotation cell operation, and link the circuit setup and operation to …
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IMPROVEMENT OF PORPHYRY COPPER FLOTATION …
the bulk flotation circuit of copper–mol ybdenum ore (Fi g. 2). Conditions of the processing plant were maintained constant in all tests. The base reagents (АeroMX5152 and BK-901B) were entered by doses in the flotation circuit at the milling stage. The reagents based on tertiary acetylene alcohols—
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INVESTIGATION OF EFFECTIVE PARAMETERS FOR …
Flotation of porphyry copper–molybdenum ores (theoretical considerations) Molybdenite-bearing copper sulphide ores are typically beneficiated by froth flotation techniques in two stages.
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Effects of aluminosilicate minerals on copper–molybdenum flotation …
Sarcheshmeh is a major porphyry copper deposit located in Kerman Province in the southeastern part of Iran. Geologically, it is divided into three zones: oxide, supergene, and hypogene (National Iranian copper industries company, 1977). ... The reagents used in the flotation circuit are the collectors of Nascol 1451 ...
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Quantifying contributions to froth stability in porphyry copper …
The froth half-life was measured in-situ of the flotation cells by means of a modified froth stability column (Fig. 1).This has the same general design as the column of Barbian et al. (2005), but it is also equipped with a bottom valve, which is closed when the equilibrium froth height is reached in the column, shutting off the gas flow and allowing …
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Agglomeration–Flotation of Finely Ground Chalcopyrite …
Flotation is the conventional method for processing porphyry copper deposits, one of the most economically important sources of copper (Cu) worldwide. The rapidly decreasing grade of this type of Cu ore in recent years, however, presents serious problems with fine particle recovery using conventional flotation circuits. This low …
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Closed-circuit test results for enhancing flotation of Cu
Porphyry-type deposits are the major sources of copper and molybdenum, and flotation has been adopted to recover them separately. The conventional reagents used for depressing copper minerals ...
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Estimated Water Requirements for the Conventional …
3. Banks of rougher cells in the flotation circuit of the Sierrita copper porphyry mine, Arizona ..... 11 4. Photograph of the tailings storage facility for the Sierrita copper porphyry mine in Arizona..... 11 Tables 1. Engineering and operational parameters for a conventional copper flotation circuit with
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A novel approach for preferential flotation recovery of molybdenite
Fig. 1b has also been adopted by Dexing copper mine. While in the rougher flotation step, a selective collector thionocarbamate is used for preconcentration of copper and molybdenum from porphyry copper ores, which can reduce the influence of lime on the floatability of molybdenite and obtain relatively high overall recovery of molybdenite.
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Current Status of Copper-Ore Processing: A Review
28 million t of porphyry copper ore per year, where the initial content of copper in the ores is 0.4%. The rougher flotation feed is the tertiary grinding overflow of 80% passing –65 μm. The flotation circuit includes rougher and scavenger flotations, regrinding and size distribution of the concentrate to an overflow of 80%
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(PDF) Porphyry Copper Alteration overview
The Sarcheshmeh copper mine is a significant copper and molybdenum producer. Sampling of the Sarcheshmeh flotation circuit (in a six-month period) showed that a large share of waste of molybdenite ...
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Improving the performance of a low-grade porphyry copper …
A large porphyry copper flotation plant has been simulated using a flotation model developed from first principles using the hydrophobic force as a kinetic parameter …
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Current Status of Copper-Ore Processing: A Review
28 million t of porphyry copper ore per year, where the initial content of copper in the ores is 0.4%. The rougher flotation feed is the tertiary grinding overflow of 80% passing –65 …
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Improving the performance of a low-grade porphyry copper ore flotation
A large porphyry copper flotation plant has been simulated using a flotation model developed from first principles using the hydrophobic force as a kinetic parameter (Huang et al., 2022, Gupta et al., 2022).The input to the simulation was the size-by-class liberation matrix (m ij) of a flotation feed, which was essential for predicting the …
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A study of mechanisms affecting molybdenite recovery in a bulk copper
Minerals Engineering. The quality of recycled process water is an important issue in the flotation of Cu–Mo ores. Processing of Cu–Mo ores includes two steps: a bulk flotation where molybdenite is recovered together with Cu sulfides, and a subsequent selective flotation step where molybdenite is separated from depressed copper sulfides.
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Flotation behaviour of gold during processing of porphyry copper …
A split-circuit was proposed for a porphyry copper-gold ore from Indonesia, to deal with some of these problems (Figure 12). ... btained with this circuit and the conventional circuit. Flotation Fiaed Pdmary mugher Bulk roii !!!III Bulk scavenger Regririd I st. cleiner leaner scavenger l~2nd cleaner 3rd cleamr Combined Tailing Cu-Au cleaner ...
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An investigation of the factors affecting the recovery of molybdenite
The Copperton Concentrator consists of a grinding circuit and two flotation circuits. Four SAG mills, eight ball mills and an integral pebble crusher, reduce 150,000 tonnes per day of run of mine ore to a nominal P80 of 240 μm.Cyclone overflow is processed through the bulk flotation circuit, consisting of five rows of rougher …
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The interaction of flotation chemistry and size reduction …
International Journal of Mineral Processing, 22 (1988) 169-181 169 Elsevier Science Publishers B.V., Amsterdam -- Printed in The Netherlands The Interaction of Flotation Chemistry and Size Reduction in the Recovery of a Porphyry Copper Ore R.R. KLIMPEL and R.D. HANSEN The Do w Chemical Company, Midland, M148674 (U.S.A.) …
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Recovery of molybdenum and copper from porphyry ore …
A study of mechanisms affecting molybdenite recovery in a bulk copper/molybdenum flotation circuit [J]. International Journal of Mineral Processing, 2009, 93(3âˆ'4): 256âˆ'266. [17] JORJANI E, BARKHORDARI H R, KHORAMI M T, FAZELI A. Effects of aluminosilicate minerals on copper-molybdenum flotation from Sarcheshmeh …
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An investigation of the factors affecting the recovery of molybdenite
An investigation of the factors affecting the recovery of molybdenite in the Kennecott Utah Copper bulk flotation circuit. Author links open overlay panel B. Triffett, C. Veloo, B.J.I ... Effect of clay slimes on copper, molybdenum flotation from porphyry ores. In: Proc. Copper 99, vol. II, pp. 95–111. Google Scholar. Chander and …
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Challenges and opportunities in the recovery/rejection of …
In some copper flotation circuits, arsenic deportment in the concentrate is undesirable as it often leads to hefty smelter penalties. ... Influence of gold mineralogy on its flotation recovery in a porphyry copper–gold ore. Chem. Eng. Sci., 99 (2013), pp. 127-138. View PDF View article View in Scopus Google Scholar. Aksoy and Yarar, 1989 ...
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Recent progress on research of molybdenite flotation: A …
To recover copper and molybdenum from their porphyry sulfide ores, several process flowsheets are applied, and two of them are shown in Fig. 1.[23, 24] As illustrated in Fig. 1 (a), [23, 25] the two-stage flotation flowsheet is the most widely adopted.In the first stage, copper and molybdenum sulfide concentrates are recovered …
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Effects of aluminosilicate minerals on copper–molybdenum flotation …
1. Introduction. Porphyry copper deposits are the world's main source of copper, molybdenum, and rhenium. They are also a significant source of gold, silver, tin, and a range of by-product metals (British geological survey, 2007).In many porphyry copper ores, various aluminosilicate minerals are present, such as kaolinite, chlorite, …
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Limits of the CIL circuit in copper–gold plants
This study examined the performance of the CIL (Carbon-in-Leach) circuit at Telfer, a copper–gold plant treating porphyry copper deposits containing gold associated with both copper and iron sulphides, with an objective to identify factors normally limiting the gold recovery in the CIL circuit in the presence of a small amount of copper after …
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The effect of microwave's location in a comminution circuit …
DOI: 10.1080/15567036.2020.1753859 Corpus ID: 219018480; The effect of microwave's location in a comminution circuit on improving grindability of a porphyry copper deposit @article{Gholami2020TheEO, title={The effect of microwave's location in a comminution circuit on improving grindability of a porphyry copper deposit}, …
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Modified reagent mode in porphyry copper-molybdenum ore flotation
Test data on the selective reagent modes at bulk flotation cycle and modified carboxymethylcellulose (CMC) at a selection cycle for the bulk copper-molybdenum concentrate. The selected reagent mode at a bulk flotation cycle with industrial kerosene and Beraflot as collectors and OPSB as a frother made it possible to recover 87 % of …
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Recovery of molybdenum and copper from porphyry ore …
A copper–molybdenum iso-flotability flotation process has been developed to efficiently improve the recovery of molybdenite from Duobaoshan porphyry Cu–Mo ores. The effects of flotation approach, type of collector, feed particle size distribution, rougher pH value and reagent dosage on the recovery of molybdenite were evaluated …
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A study of mechanisms affecting molybdenite recovery in a …
Ametov et al. (2008) conducted a series of surveys at different porphyry copper flotation plants. In the operations investigated, the recovery of molybdenite in …
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