Single mineral flotation test was organized to research the effect of pulp pH value on the flotation behavior of galena and jamesonite. ... In response to the high pyrite recovery in copper ...
قرأ أكثر
The averages of maximum copper grade obtained in all tests were considered (Table 3).The effect of pulp density was −0,09 for a variation of 5%; This observation (also shown in Fig. 2 a) indicates that reducing the pulp density lead to an increase in the copper grade in the concentrate. This is similar to what has been …
قرأ أكثر
In this study the effect of pH on potential in solution and sulphur minerals flotation is discussed with various electrodes. The electrodes were platinum, gold, chalcopyrite, pyrite and galena.
قرأ أكثر
On the other hand, pH drastically influences copper and molybdenum flotation kinetic constant, it decreased a lot with increasing pH, and results of pH 8.5 and 9.0 is quite …
قرأ أكثر
Effect of phyllosilicates on the copper grade in chalcopyrite flotation (adapted from Farrokhpay and Ndlovu, 2013). Some strategies to reduce the negative effect of clay minerals on the process of flotation are the use of a variety of reagents such as rheology modifiers and/or the use of reagents that adsorb on the surfaces of clay …
قرأ أكثر
HABTC exhibited excellent affinity to chalcopyrite particles under pH 6-10 and achieved superior flotation recovery of copper minerals in comparison with sodium isobutyl xanthate (SIBX).
قرأ أكثر
sulph ite with bo th collect or and p yrite surface. It was f ound that sulphite depressed the xanthate-. induced flota tion of copper-ac tivate d pyrite w ith nitroge n or air purg ing at pH 7 ...
قرأ أكثر
Abstract. In th e current research work, influences of particle size, grinding time, and agitation rate on. the flotation of a copper sample from Sungun copper mine (E. Azerbaijan, Iran ...
قرأ أكثر
Raw ores are mixed with filling materials during mining, which makes it difficult to sort copper‑sulfur resources. Inductively coupled plasma analysis revealed that the primary dissolved metal ions from the filling materials were Ca 2+ and Fe 3+.Flotation solution chemistry, flotation tests, and X-ray photoelectron spectroscopy measurements …
قرأ أكثر
Collector type and pulp pH play an important role in the lead–zinc ore flotation process. In the current study, the effect of pulp pH and the collector type …
قرأ أكثر
Flotation tests on an industrial copper–lead bulk concentrate showed that using this depressant mixture can achieve highly efficient separation of chalcopyrite from galena at the natural pH of ...
قرأ أكثر
Results of flotation experiments in seawater indicated that the effect of pH on copper and molybdenum flotation maximum recovery seems limited. On the other hand, pH drastically influences copper and molybdenum flotation kinetic constant, it decreased a lot with increasing pH, and results of pH 8.5 and 9.0 is quite similar.
قرأ أكثر
A kinetic study of precipitate flotation of Zinc(II), Cobalt(II) and Copper(II) hydroxides. Journal of Chemical Technology and Biotechnology 1982, 32 (2), 407-411.
قرأ أكثر
The effect of pulp oxidation potential, Eh, on the flotation of copper-activated pyrite at pH 9.0 in the presence of xanthate was investigated. It was found that pyrite recovery is at a maximum value when the Eh during conditioning is approximately 35 mV (SHE), but decreases at lower and higher Eh values. Solution and surface analytical ...
قرأ أكثر
This work investigated the effects of NaCl addition on galena flotation in the presence of xanthate. The micro-flotation experiments were performed using NaCl solutions which also included xanthate, at pH 9 (±0.1). Our results indicated that galena recovery improved for higher NaCl as well as higher xanthate concentrations.
قرأ أكثر
The effects of flotation parameters including pulp density, collector dosage, frother dosage, and dispersant dosage were statistically examined to obtain an effective approach for...
قرأ أكثر
Dithionocarbamates are copper selective and pH responsive collectors [33, 34], thus, the effect of varying concentrations of copper sulphate (8–150 × 10 −6 mol/l) and pH (8.5–12) on flotation of pyrite and arsenopyrite was determined. 5 g of pyrite or arsenopyrite was conditioned in 100 ml of demineralised water at pH 11 using lime and ...
قرأ أكثر
MX-7017 is used in the copper-molybdenum plant in Chile which was simulated in this study. In this study, collectors were added directly without dilution while MIBC was diluted to 1 wt% before its use. NaHS (AR grade) was used as the copper depressant in flotation. The pH in flotation was adjusted by 1 M NaOH solution.
قرأ أكثر
both cases (copper grade and copper recovery) the parameter effects are. similar to be varied. A maximum recovery of copper was 88,58% while the grade was 2,88. with 32,29 copper oxide on the ...
قرأ أكثر
Here, rougher flotation is most Selective at a pH of 9.5 as pH levels in the 9 to 10 range yielded 1% to 2% better recoveries. Mineralogy data also supports this and shows between 3% and 10% of the copper is present as low-grade middlings in pyrite, …
قرأ أكثر
In this work, the effect of fine fraction, pH, flocculant, and collector concentration on the shear yield stress of copper flotation tailings at concentrators placed at Sarcheshmeh and Shahrebabak ...
قرأ أكثر
The flotation of malachite as a function of Cu2+ concentration at 80 mg/dm3 of Na2S, 80 mg/dm3 of NaBX is shown in Fig. 5(a), Cu2+ were added in the form of CuSO4. When CuSO4 was added prior to Na2S, the flotation recovery of malachite sharply decreased from 78.20% to 26.90% by the addition of 150 mg/dm3 CuSO4.
قرأ أكثر
Porphyry copper deposits are important sources of copper and typically processed by flotation to produce copper concentrates. As mining areas become deeper, the amounts of impurities, such as sphalerite, can be increased in copper ores, so the appropriate depression of sphalerite floatability should be achieved to obtain saleable copper …
قرأ أكثر
Accordingly, higher pH levels were adopted for cleaner flotation to enhance selective flotation of copper VS pyrite. Concentrate regrinding to a product size of 80% passing …
قرأ أكثر
The pH values of 6 and 8 were selected as optimum pH for the lead and zinc flotation respectively. Lead, zinc, and iron flotation kinetic rates in the lead flotation stage at pH values of 6 and 8 were shown in Fig. 10. As it can be seen, there is a sharp increase in the lead recovery in the first minute and then the lead recovery gradually ...
قرأ أكثر
Fig. 3 shows the effect of NaClO concentration on the flotation separation kinetics of a bulk Cu-Mo concentrate. Experiments with 20 to 1,020 g/t NaClO, with a conditioning time of 5 min and pH 7, show that recovery of chalcopyrite decreases when the NaClO concentration increases, while molybdenite recovery is between 62 and 75% (Fig. …
قرأ أكثر
Flotation of grinding products with 55, 60, 65, 70, and 75% of grain size <74 μm, was conducted at the pulp's pH values of 10 and 12. Higher copper recovery was obtained in concentrates at pH 10, but with lower copper grades, approximately 2%. Copper recovery in concentrates at pH 12 was slightly less, but copper grades were …
قرأ أكثر
High pH values, which is a good way to depress pyrite and therefore to favour the flotation of copper and zinc sulphides, do not have the same effect on seafloor ore.
قرأ أكثر
On the other hand, pH drastically influences copper and molybdenum flotation kinetic constant, it decreased a lot with increasing pH, and results of pH 8.5 and 9.0 is quite similar.
قرأ أكثر