A feasible flowsheet was developed based on a modified Black Mountain (Cu-Pb-Zn concentrator) processing route for the Cu circuit. The existing RPZC route …
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Copper Content in Ores and Concentrates. A global copper mine-by-mine review undertaken by ICSG found that the global average copper ore grade was as low as 0.45% copper in reported reserves and only 0.65% copper in 2015 copper mine production. Global weighted average of copper concentrate output in a large sample of plants was …
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The flotation flowsheet consists of a pre-flotation section to remove the naturally floatable talc particles, and sequential copper and zinc flotation sections. ... the effects of water reuse on the flotation efficiency of a Cu-Zn sulfide ore were investigated. ... The head grade of the ore is 0.83% Cu, 25.16% Fe, 0.22% Pb, 2.23% Zn, 0.95 g/t ...
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The mixed concentrate containing Cu 11.57% and Pb 16.75% was preoxidized under the above conditions, and the flotation separation verification results showed that Cu concentrate with Cu grade of ...
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The results of the preliminary tests demonstrated that the Cu-Pb-Zn bulk flotation and partial Cu-Pb bulk flotation, followed by separation deal with a complex …
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As shown in Fig. 1, the flotation tests were performed in a XFD-63 flotation cell (self aeration) whose volume for flotation was 1.5 L using an agitation speed of 1800 rpm. The solid density in the flotation cell was changed according to the experimental requirements. During the conditioning, depressant (Zinc sulfate and Sodium silicate), …
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I conducted rougher Cu-Pb-Zn flotation tests and would like to calculate the recovery of the target metal in each circuit (example: Cu in Cu-circuit) as well as the % wrongful recovery of the other 2 metals (Pb and Zn in Cu-circuit). During testing I recorded the masses of the feed, 3 concentrates, and tailings.
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the optimum flotation flowsheet and conditions to produce saleable copper and zinc con-centrates. The optimum primary grind size was determined to be p80 = 38 µm based on ... The EDTA values of Cu, Pb, Zn and Fe were used the for assess-ment of surface oxidation of the copper minerals, galena, sphaleriteand pyrite, respec-, tively. 2.3. Batch ...
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During the flotation of Pb-Zn, Cu-Zn, and Cu-Pb-Zn ores, sphalerite is generally depressed using ZnSO 4, either alone or with cyanide. The depressing action of Zn sulphate occurs in the presence of hydroxyl ions; it is due to the adsorption of Zn hydroxide on the surface of the sphalerite, which prevents the adsorption of xanthate ( …
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At the end of whole flotation process, saleable lead, copper and zinc selective concentrates having 68.05% Pb, 23.15% Cu and 45.80% Zn content were obtained with 73, 64 and 74 metal recoveries ...
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They include for example Cu-Zn-Pb, Cu-Mo, Cu-Ni, Cu-Pb ore etc. Figure 1 shows an example of the most common porphyry copper ore type beneficiation flowsheet. Porphyry ores, although generally ...
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This study considered NB flotation for processing complex Pb-Cu-Zn sulfide ore in two different size ranges and various conditions to assess the process readiness. …
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The grade of copper in the Cu-Pb bulk concentrate is low, selected by the preferential flotation process in Xiacun Mine. The quality of product is not qualified, which also contains high grade of zinc and silver. In view of this problem, a test about the comprehensive recovery of Cu-Pb bulk concentrate by oxygen pressure leaching was carried ...
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The low Cu (WF3 Zone 2) and high Cu (WF 3 Zone 1) ore samples head grades are shown in Table 1, the 'high Cu' ore being characterized by higher Cu and lower Pb grades than the 'low Cu' ore.Rough economic value calculations showed that value in the low Cu ore was contained largely in sphalerite (67% Zn) and galena (29% Pb) …
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Three-stage cleaner flotation released grades of 25% Cu and 5–10 g/t Au at recoveries of 87% and 70% respectively for the chalcopyrite-pyrite ore. The chalcocite ore produced higher copper grades in the range of 60% Cu with 5–10 g/t Au, with similar recoveries to those of the chalcopyrite–pyrite ore.
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The results of the low-Cu ore indicated that it could be processed via the current RPZ flowsheet and operating conditions, but that Pb rougher and Zn rougher concentrate re-grinds would be ...
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Konigsman (1985) refers to the open version as "basic flowsheet for a complex ore" (Cu/Zn, Cu/Pb/Zn sulphides in that case) noting the advantage of an "open circuit" for automatic control, especially when "drastically different conditions of pH or temperature are employed in a sequence of separation stages". The open circuit ...
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In this research, flotation of copper, lead and zinc minerals from a copper oxide–sulfide ore was studied. The identification tests showed that the sample is a …
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It has been proposed that the IMD is an epigenetic Pb, Zn, and Ba Mississippi Valley-Type (MVT) according to isotopic investigations 2. ... The simple flowsheet of flotation tests.
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In this paper, effects of temperature, sulphate (SO42-), thiosulphate (S2O32-) and calcium (Ca2+) ions on the flotation performance of a Cu-Pb-Zn complex sulfide ore were investigated using a ...
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The next phase of Pb-Zn-Ag flowsheet development testwork, following completion of the inaugural mineral resource estimate, is to optimize the preliminary flowsheet, with integrated mineralogy ...
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With the Cu–Pb bulk flotation flowsheet, the cyanidation tailing was processed to obtain qualified Cu concentrate with grade of 13.17% and recovery of 70.00% compared with the original Cu grade of 0.21%. The Cu–Pb tailing was processed to obtain qualified Zn concentrate with grade of 34.72% and recovery of 69.58% compared with …
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Flotation feed and the test products (i.e., concentrates and tailings) were dried in an oven at 60 °C and analyzed for Pb and Zn contents by complexometric titration with EDTA as titrant and xylenol orange as indicator [14, 34].The procedure includes digestion of 1 g solid sample in a 250-ml glass beaker by 15 ml of concentrated HCI and …
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While high-grade Pb (60.84%), Zn (56.22%), and S (46.78%) concentrations were obtained in the new flotation flowsheet with recovery rates of 82.60%, 95.26%, and 64.47%, respectively. In new system, the recoveries of primary minerals galena and sphalerite remained as high as that in HAPP, and pyrite was successfully recovered …
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In this research, flotation of copper, lead and zinc minerals from a copper oxide–sulfide ore was studied. The identification tests showed that the sample is a mixture of quartz, chalcopyrite, galena, cerussite, hemimorphite and iron oxide minerals with 5.04% CuO, 1.61% PbO, 2.07% ZnO and 56.40% SiO2. The experimental design methodology …
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This paper details the response of the variable low Cu ore to the current operating plant conditions, as well as the flowsheet development on the high Cu ore …
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The experimental design methodology (RSM) was conducted to investigate the effect of parameters such as pH, collector, depressant, dispersant, preparation time and size of particles on …
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Processing of the Kipushi Cu–Zn sulphide ore started in 1935. Initially, the plant treated about 20,000 tonnes of ore per month using a single flotation circuit with conventional reagents such as xanthates and pine oil. Over the period 1937 to 1940, the concentrator was extended to allow the differential flotation of Cu–Zn.
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Flowsheet development for selective Cu-Pb-Zn recovery at Rosh Pinah concentrator @article{Sehlotho2018FlowsheetDF, title={Flowsheet development for selective Cu-Pb-Zn recovery at Rosh Pinah concentrator}, author={Nthapo Sehlotho and Zandile Sindane and M. A. W. Bryson and Louise Lindvelt}, journal={Minerals …
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A laboratory flotation test campaign was therefore undertaken to (1) establish whether the Zone 2 (low-Cu) ore could be processed through the current plant and identify any flowsheet changes that would need to be made, and (2) demonstrate the conditions required to produce a separate concentrate from the Zone 1 (high-Cu) ore. The results of …
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Bicak et al. showed that the pulp temperature between 20 °C and 60 °C can significantly affect the flotation performance of a Cu-Pb-Zn ore. High temperature increases the grade of bulk Cu-Pb and Zn concentrates due to reduced froth stability, i.e., lower water recovery and mass pull, and more efficient pyrite depression [23,24].
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Baiyinchagan ore flotation conditions and flowsheet: 1—grinding; 2—rougher Cu flotation machine; 3, 4—scavenger flotation machines; ... The Effects of …
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In general, Cu-Zn sulfide ores consisting of a Cu/Zn ratio of 0.4-1:1 (w/w) [16] [17][18][19][20] are processed by a two-step flotation: (i) the selective flotation of Cu minerals while depressing ...
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In the rougher flotation stage, a lead concentrate with 17.29 % Pb and a zinc concentrate with 9.89 % Zn could be obtained by 76.71 % lead and 15.49 % zinc recoveries from the ore samples ...
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Whilst the initial approach of exploiting relative flotation kinetics using the current RPZC operating conditions did not achieve the desired Cu-Pb selectivity, a feasible flowsheet …
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