As Fig. 3, Fig. 5 demonstrate (Sample A and B), at pH > 9 the froth layer thickness measurements under rougher flotation conditions, are clearly lower when measured in sea water than in fresh water. Also the amount of water transferred to the froth is lower in sea water (Fig. 4, Fig. 6).All these measurements were carried out at 34–35% …
DetailsThe object of research was copper–molybdenum ore containing 0.43% copper and 0.0089% molybdenum. Copper minerals are represented by chalcopyrite 1.2% and chalcocite 0.015%, while covellite is ...
Details1. Crushing: The molybdenum ore is coarsely crushed by the jaw crusher, and then crushed to a reasonable particle size by the fine jaw crusher. 2. Grinding: The feeder is evenly fed into the ball mill, and the ore is ground to below 200 mesh by the ball mill + classifier.Make the particle size meet the requirements of flotation process. 3. …
DetailsMolybdenum and copper-molybdenum porphyries are mined by open-pit or by underground methods. Once the ore has been crushed and ground, the metallic minerals are then separated from gangue minerals (or the molybdenum and copper from each other) by flotation processes, using a wide variety of reagents.
DetailsThe search for effective reagents for the flotation of non-ferrous metals from mineral raw materials is an actual problem. The article discusses the results of research on …
DetailsA 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 …
DetailsA molybdenum (Mo) concentrate assaying 6.00% copper (Cu) and 19.01% Mo was magnetically sorted using a diamond-shaped steel rod medium mesh at a feed concentration of 20% and a pulp flow rate of 5 L/min from a Cu-Mo flotation concentrate with 88% of particles smaller than 23 μm using the
Details1. Introduction. Cu and Mo recoveries are lower when Cu–Mo sulfide ores are floated in sea water ( Castro et al., 2012b ). The high salinity of sea water seems to be the main …
DetailsThese flotation results demonstrate that Na 2 S 2 O 5 treatment in seawater selectively depresses the floatability of copper minerals. Consequently, molybdenum can be separated from copper minerals under a weakly acidic condition in seawater. In addition, this study discusses the effects of various pH conditions and dosages of Na 2 S 2 O 5.
DetailsThe copper, molybdenum, silver and gold deposits of the region were formed during Late Jurassic–Early Cretaceous age and are part of a 1000-km-long belt parallel to the Pacific coast (Sillitoe and Perelló, 2005).These deposits are usually hosted by sub-aerial andesites or broadly contemporaneous gabbro to granodiorite intrusions formed during …
Details4 Fig. 1. (a) Flowsheets for recovering Cu and Mo from porphyry Cu–Mo ores, (a) a typical two-stage flotation flowsheet (a bulk flotation circuit followed by a copper-molybdenum separation ...
DetailsFor instance, for the flotation separation of a ton of fine copper-molybdenum co-flotation concentrate to be used in this investigation, which assays around 26% Cu and 0.35% Mo with 90–92% mass below 50 μm, ... Currently, this flotation process produces a copper concentrate with Mo content excessively reaching 0.15%, …
DetailsThe copper recovery was improved by about 3.2% with dextrin at 200 g/t. LING [13] studied the flotation process of certain molybdenum ore with a new depressant BK510. The grade and recovery of molybdenum in molybdenum concentrate were 51.07% and 89.09% with the depressant at 30 g/t.
DetailsThe copper ore in Chilean copper porphyry deposits is often associated with molybdenum minerals. This copper–molybdenum (Cu–Mo) sulfide ore is generally mined from various …
DetailsThe beneficiation process of molybdenum ore is mainly performed by flotation separation methods, and the recovered molybdenum mineral is molybdenite(MoS2).Sometimes in order to improve the quality of molybdenum concentrate and remove impurities, the concentrated molybdenite would be subjected to a further …
DetailsTable 1: Grade/recovery performance of a hypothetical copper ore flotation process. Product % Weight % Cu Assay Feed 100 2.09 Concentrate 10 20.0 Tailings 90 0.1 (a) From Table 1, the Ratio of Concentration can be calculated as F/C = 100/10 = 10. If only assays are available, the ratio of concentration equals (20 – 0.1)/(2.09 – 0.1) = 10 ...
DetailsIt makes it possible to recommend using of combined flotation–biohydrometllurgical process for copper–molybdenum ore beneficiation that allows to efficiently recover mineral fractions with essentially different physicochemical properties [10], [11]. 3. Experimental studies of leaching process of bulk flotation …
DetailsThese flotation results demonstrate that Na 2 S 2 O 5 treatment in seawater selectively depresses the floatability of copper minerals. Consequently, molybdenum can be separated from copper minerals under a weakly acidic condition in seawater. In addition, this study discusses the effects of various pH conditions and dosages of Na 2 S 2 O 5.
DetailsIn a flotation locked cycle test, a poor/low moly recovery was obtained at 47.3% as it appeared that molybdenum had not reached equilibrium. The calculated head grade trend, shown in Figure 8-28 indicates that the moly and most of the other elements had not reached convergence when the test was terminated. Figure 8-29 shows the ...
DetailsThis study examines the fate of molybdenum in the processing of copper ore in a Chilean processing plant. Molybdenum shares the path of Cu from grinding and flotation into the sulfide concentrate. ... Molybdenite was probably extracted during the flotation process together with the copper sulfides due to missing or poor separation of ...
DetailsThe study of the flotation of copper and molybdenite ores indicates that the recovery of molybdenite and copper flotation is reduced in the coarse, fine and very fine size ranges …
DetailsThe copper concentrator produces 1050 mt/day of bulk Cu-Mo concentrate averaging 27% Cu and 0.6% Mo. Molybdenum plant feed is thickened to 62% solids and stored in two 150 cubic meter tanks. Two identical flotation circuits are fed from a constant head tank through changeable orifice plates thus maintaining steady feed rates.
DetailsThe flotation process resulted in a gradual increase in the recovery of copper and molybdenum, with maximum recovery achieved after 30 min. Ultimately, the final recovery rates for copper and molybdenum were 97% and 98%, respectively.
DetailsMolybdenite is a sulfide mineral and is often found in copper-molybdenum porphyry deposits, which is processed as a by-product of copper during the flotation process 10. Molybdenite mineral is one ...
DetailsTo minimize the negative effect of process seawater on molybdenite flotation, diluting process seawater with fresh water is a common practice. This study was designed to identify whether the dilution of process seawater in copper-molybdenum flotation plants benefits molybdenite flotation where NaHS is added to depress …
Details1. Mixed flotation Process. Most copper-molybdenum ores adopt the mixed flotation-copper-molybdenum separation process, because molybdenite and chalcopyrite have …
DetailsBecause of large differences between the surface properties of molybdenite and other sulfides, molybdenite can be recovered from Cu–Mo ores as a by-product with copper at levels as low as 0.01% Mo. Approximately half of the world's molybdenum production comes from porphyry Cu–Mo ores (Bulatovic, 2007, Guang-yi et al., 2012).
DetailsThe 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 ...
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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