— Effect of calcium and thiosulfate ions on flotation of a Ni–Cu ore was investigated. The ions improved the flotability of sulfides at the normal process pH after grinding in steel mill.

ABSTRACT. Problems arising during flotation of complex Cu-Pb-Zn sulphide ores are in general of geological origin. The features of these ores are reviewed, stressing that mineralogical studies extending to process mineralogy are prerequisite for a consistent flotation process. Some examples affecting flotation are given.

 — The imbalance between raw materials of high economic importance and their supply has increased the search for new approaches to obtain valuable elements from mining tailings. In this study, the extraction of copper, zinc, and lead from sulfidic tailing in sulfate–chloride media was investigated. A 33 Box–Behnken design was applied to …

Therefore, it is determined that the grinding fineness in the roughing flotation of the copper is 70% -0.074 (mm). Flotation Conditions Tests of Copper Sulfides ... Cu Pb Zn S Cu Pb Zn S Copper concentrate 6.72 22.67 3.93 6.22 91.77 …

 — This study aims to investigate the effects of dry grinding, and conditioning during grinding on the flotation behavior of the Pyhäsalmi massive sulphide ore (Cu-Zn) and the Syväjärvi spodumene pegmatite silicate ore (Li). Especially conditioning during dry grinding and dry chemical conditioning overall haven't been studied extensively.

 — Grinding and flotation The test material was ore from Petikn of Boliden Mineral AB Sweden, with average analysis: 0.63% Cu, 3.8% Zn, 0.67% Pb, 23% Fe, 0.3% As, 22% S, and 81 g/t Ag. Roughly, this corresponds to the following mineral composition: 2% chalcopyrite, 6%o sphalerite, 1% galena, 1% arsenopyrite, and a total iron sulphide …

 — Potassium amyl xanthate (PAX) and sodium isobutyl xanthate (SIBX) are traditional thiol collectors used in the bulk and selective froth flotation of nickel and copper sulfide mineral ores. Individually, they are not selective enough for economical low-grade nickel froth flotation. Therefore, more selective collectors or co-collectors are required.

 — Flotation tests. A Cu-Pb-Zn sulfide ore from Somincor (Neves Corvo, Portugal) with a chemical composition of 0.5% Cu, 1.2% Pb, 7% Zn, 32% Fe and 43% S was used. The ore sample is a massive sulfide ore containing chalcopyrite, galena, sphalerite and pyrite as the major sulfide minerals. ... copper and nickel mineral …

 — The rougher flotation concentrates of the Cu-Pb and Zn circuits were analysed to evaluate the flotation behaviour of chalcopyrite, galena and sphalerite. ... Chemical condlUons at different stages of grinding/flotation orcult Conventional AuLogcnous O S ~ S total 4(]0- A Rest S Rest S 350 - 300- ~ 250- 150- 50 234 567 6 Steps Fxg 11. ...

This classification is applied to data gained from a specimen of REE-bearing syenite and in studies of beneficiation products of REE-carbonatite ores obtained by grinding and multistage...

 — The effects of collector type and grinding environment on the Flotation selectivity of Rosh Pinah complex Pb/Zn ore were investigated. It was found that the Flotation performance of collector was ...

 — The extraction of Ni, Co, and Cu during leaching increased with increasing grinding time due to the proportion of minus 20-micron material increasing; 1.5 h of grinding was sufficient to leach 98.7% of the …

 — The prevailing process in the Cu–Pb–Zn ores processing on industrial scale is copper–lead bulk flotation with depression of zinc and then zinc flotation from tails. About 90% of the operational plants use …

 — Boliden Kevitsa Mining Oy, a Cu-Ni-PGE concentrator recycles 90–95% of its water for use in the plant. The quality of recycled water tends to deteriorate as various elements and compounds such as Ca, Na, Mg, K, SO 4 2− and residual reagents accumulate. The accumulation shows seasonal cyclic variation that has an impact on …

 — The rougher flotation concentrates of the Cu-Pb and Zn circuits were analysed to evaluate the flotation behaviour of chalcopyrite, galena and sphalerite. The results indicate better liberation of minerals in coarse size fractions for the pulp ground by autogenous mill while conventional grinding shows higher degree of liberation in the fine ...

 — Abstract. Surface oxidation of the sulfide minerals negatively affects the flotation performance, i.e., the selectivity and even the recoveries at heavy oxidation conditions. Oxidation may take place …

 — 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. ... of samples (−150, and −38 µm) at 30% solids. Before feeding samples to the flotation cell, they were subjected to grinding (3 mins) to generate fresh surfaces to minimize ...

 — Great pH to Recover Zn. By modifying Flotation pH to create kinetic/speed differences between the metals and achieve sequential flotation and take full advantage of the hydrophobic nature of each …

The experimental design methodology (RSM) was conducted to investigate the effect of parameters such as pH, collector, depressant, dispersant, preparation time and size of …

 — Water shortages have a direct impact on the life of many mining and mineral processing operations. Therefore, a good understanding of the effects of water quality on flotation performance is essential. In this study, effects of dissolved ions (both anions and cations) were investigated on the flotation performance of a Cu-Zn complex sulfide ore …

 — The beneficiation process for Cu-Pb-Zn polymetallic sulfide ores involves several stages, including crushing, grinding, and flotation. Each stage contributes to the effective separation of ...

 — According to the process mineralogy characteristics of the ore, Cu-Pb-Zn bulk flotation, partial Cu-Pb bulk flotation, and preferential flotation tests were conducted.

Zinc flotation without pulp heating has higher seasonally induced risks. For example, the Chinese Fankou Zn–Pb plant reported a seasonal drop in both Zn recovery and grade by 0.66% and 0.4% respectively at lower temperature slurries (22–28°C), when compared to the results at 31–39°C [Citation 125].

 — 2) describes theoretical aspects of the action of flotation reagents 3) provides information on the use of reagents in over 100 operating plants treating Cu, Cu/Zn, Cu/Pb, Zn, Pb/Zn/Ag, Cu/Ni and Ni ores. * Looks at the theoretical aspects of flotation reagents * Examines the practical aspects of using chemical reagents in operating plants

 — Flotation is the most commonly used technique to recover valuable minerals not only from sulfide ores like complex Cu-Pb-Zn sulfides (Aikawa et al., 2020;Bulatovic, 2007), Cu-Ni-Co sulfides (Liu ...

 — The results demonstrate that the ore consists of 35 categories of minerals, assaying Cu 7.99%, Pb 9.39%, and Zn 1.96% in the forms of chalcopyrite, galena, and sphalerite, respectively, and silver ...

tively, 88% with grade of 24.5% in Cu concentrate and 81% with grade of 13.8% in Pb concentrate. Keywords Optimization Differential flotation Copper sulfide-oxide ore Ghozlo mine 1 Introduction Unlike lead–zinc and copper–zinc deposits that are abun-dant in the world, there are limited amounts of deposits that contain the compounds of all ...

Bayraktar, I. (1985–1990) Reports on several complex Cu-Pb-Zn and Cu-Zn sulphide ores, not in public domain. Google Scholar McKee, D.J. (1991) Case studies of flotation control, in this volume. Google Scholar Rao, S.R., and Forssberg, K.S.E. (1991) Electrochemistry in the plant, in this volume.

 — Pb–Zn–Cu complex ore from Balıkesir–İvrindi district have been concentrated by GESOM A.Ş. using a selective mechanical flotation technique. Ore feeds containing 3.23% Pb, 0.52% Cu, and 2.71% Zn were … Expand

As described in the lead-zinc ore processing section, zinc sulphate and metabisulphide sphalerite and pyrite depressants, respectively, are typically added to grinding. Then a …