High-purity pyrite, sphalerite and galena samples were obtained from Hubei and Hunan Provinces, China. These were used for micro-flotation tests and other measurements. Two ores were used for other flotation tests. The artificial mixed mineral ore was prepared by mixing high-purity pyrite, sphalerite, and galena samples in a ratio of …Web

The flotation results demonstrate that Zn 2+ and SO 3 2− provide a synergistic depression effect on sphalerite and the aerofloat collectors exhibit more selectivity towards galena.Web

An effective reagent combination plays a crucial role in the flotation separation of galena and sphalerite. In this work, potassium permanganate (KMnO 4) …Web

Paragenesis in the alteration zones are pyrite, chalcopyrite, sphalerite, galena, pyrrohotite, quartz, calcite and barite. FT-IR and XRD studies showed the presence of clay, sulphate, sulphur ...Web

Moreover, mixed-mineral flotation recovery of galena and sphalerite were 91% and 3%, respectively, at the condition of 10 mg/L pectin and pH 8, further confirmed that pectin could be used to achieve efficient separation between galena and sphalerite. (2) Electrokinetic and adsorption experiments results. CRediT authorship contribution …Web

This work studies the depression of sphalerite and pyrite with a NaCN:ZnSO4 mixture in the selective separation of Pb-Zn by flotation when the blend is enriched with Ag. Given in this paper are an explanation of depression mechanism and the method for optimizing the Pb-Ag recovery. This was done by analyzing the …Web

In the past investigations, the separation of galena and sphalerite in flotation was generally performed via the preferential flotation of galena as well as the suppression of sphalerite, since galena exhibited superior natural floatability than sphalerite [10]. The depressants employed for sphalerite are mainly some inorganic salts, including ...Web

The primary coexisting mineral with galena is sphalerite. Hence, it is critical to selectively separate galena from sphalerite by flotation. In this work, thiourea and related derivatives as potential flotation collectors for separating galena from sphalerite were investigated. Thiourea and its related derivatives were found to be effective …Web

Monyake et al. [108] studied the depression ability of chitosan-grafted-polyacrylamide (Chi-g-PAM) in separating a complex sulfide ore from Mississippi Valley comprising chalcopyrite, galena, sphalerite, and pyrite (Fig. 13). Flotation outcomes revealed that Chi-g-PAM was preferentially adsorbed onto pyrite particles among all …Web

Microbially Induced Mineral Beneficiation. K.A. Natarajan, in Biotechnology of Metals, 2018 Sphalerite–Galena Separation. Differential surface chemical behavior of A. ferrooxidans towards galena and sphalerite can be made use of in the separation of galena from sphalerite through selective flotation after bacterial conditioning. Flotation recovery of …Web

The aim of this research is to investigate the impact of temperature on Pb-Zn systems by performing flotation and stability tests with single mineral samples of pyrite, sphalerite, and galena. The …Web

Introduction. Galena is a common and typical lead-containing mineral on the earth (Chen et al., 2011, Huang et al., 2019b, Wang et al., 2019). It is usually associated with other sulfide minerals in the ore deposits, such as chalcopyrite (CuFeS 2), sphalerite (ZnS) and marmatite ((Fe,Zn)S) (Hayes and Ralston, 1988).Flotation is the commonly used …Web

The XPS analysis results for galena, sphalerite and pyrite in a CDR system show that in the strong alkaline solution, some of the collectors, that have been already …Web

In froth flotation the molecular interaction between reagents and mineral surfaces take place at the solid liquid interface. In this paper, the effect of water molecule on the three typical thiol collectors (xanthate, dithiocarbomate and dithiophosphate) interactions at the galena (PbS) and sphalerite (ZnS) surfaces has been studied adopting density …Web

From the results of single mineral flotation tests, MDPE was a potentially selective collector to separate galena and sphalerite under slightly alkaline conditions (pH=8.5). Considering the complex composition of mineral slurry, the artificially mixed minerals of galena and sphalerite flotation experiments were further performed.Web

In the case of galena flotation, ... In sphalerite flotation [Citation 89], it has been demonstrated that an increase in pH and temperature creates favourable conditions for the stability of the zinc hydroxide complex on the mineral surface. In the Somincor plant (Portugal), significant (25%) seasonal fluctuations in zinc recovery were ...Web

Furthermore, flotation tests showed a strong depression effect of galena after interaction with P. polymyxa cells and, consequently a high recovery of sphalerite in the presence of a suitable collector (Santhiya et al. 2001). It is worth mentioning that despite its efficiency, the large-scale application of such bioprocess could be ...Web

Sphalerite flotation is conducted under Cu 2+ activation system, whereas the selective separation of pyrrhotite is difficult due to the inevitable activation effect of Cu 2+, which requires a large amount of lime to depress pyrrhotite flotation.In this study, the conventional collector butyl xanthate and a novel collector ML8 were compared to the …Web

Conventional flotation extracts lead and copper minerals of 30–74 μ in size into the rough concentrate (Fig. 10A), chamber product of scavenger flotation contains minerals of zinc and iron (Fig. 10B). With a chamber product of scavenger flotation is lost galena, which is in the form of phenocrysts in sphalerite (Fig. 10C).Web

Flotation is the most important method for recovering sphalerite, and it has attracted significant research attention worldwide. In this study to clarify the hotspots for phased research frontiers and research progress of sphalerite flotation technology in the last 20 years, 720 pieces of relevant academic literature were selected by using …Web

The maximum flotation recoveries were obtained with the addition of MIBC (methyl isobutyl carbinol) as a frother; the size of the air bubbles deceased with …Web

The flotation process was first employed to separate sulfide mineral resources 100 years ago. A typical example is floating successively galena (PbS) / sphalerite (ZnS) using ethyl xanthate (EX) as collector and copper sulfate as activator while depressing pyrite (FeS 2) using lime as depressant [6], [7]. Large quantities of lime can …Web

Since plant practice is to apply xanthate as a collector in neutral to slightly alkaline condition for the flotation of galena and chalcopyrite, the solution effects cannot be ignored. ... Flotation of sphalerite and pyrite in the presence of sodium sulfite. Int. J. Miner. Process., 63 (2001), pp. 17-28, 10.1016/S0301-7516(00)00067-3.Web

The flotation tests and XPS analyses on galena, sphalerite and pyrite have been carried out in a collecting-depressing-reactivating system (hereafter referred as the CDR system). In this system, sulfide minerals were first collected and activated by the collector, and then depressed strongly by Ca(OH)2 in the strong alkaline solution, and …Web

Some of the metals that can do the job are copper and lead. At a pH between 8-9 lead can activate sphalerite to cause it flotation. So the reason is during the flotation of the two there may be lead re dissolution from galena which may activate sphalerite to cause it flotation. It may best if you are doing bulk flotation of the two.Web

The flotation of galena and sphalerite fines in the form of flocs, which is termed floc flotation, has been studied in the present work. The flocs formed through …Web

The flotation results showed that collector with more (DPTZ) offered better selectivity for the flotation separation of galena from a galena/sphalerite mixed …Web

A disaccharide unit glycosaminoglycan named hyaluronic acid (HA) was exploited as a novel sphalerite depressant in the flotation separation of Pb-Zn sulfides …Web

The sphalerite was then separated from the galena flotation tailings, activating it with 350 g/t of copper sulphate and using 20 g/t of potassium butyl xanthate as a collector. The Zn concentrate resulting after three re-cleaning stages had a content of 53.77% Zn and a recovery of 88.79%.Web

At the given reagent and operating conditions, floc flotation increases the floatability of the galena and sphalerite fines over 30% ~ad 50% in the range of pH 5 to 8, respectively, in comparison to the corresponding conventional flotation. Clearly, floc flotation is an effective means of recovering galena and sphalerite fines.Web

The motive of this work was to explore PBTCA as a novel sphalerite depressant in the selective flotation separation of galena from sphalerite. The flotation behaviors were examined by flotation tests and depression mechanism was unveiled by zeta potential measurement, Fourier Transform Infrared spectroscopy (FTIR) and X-ray …Web

The effect of HA on the flotation of galena and sphalerite were evaluated by micro-flotation tests. The depression mechanisms were investigated by adsorption capacity, Zeta potential and X-ray photoelectron spectroscopy (XPS) analysis. The results of micro-flotation tests proved that HA was an efficient and selective sphalerite depressant ...Web

This paper reports the results of flotation tests conducted with a copper-lead-zinc sulphide ore. The major sulphide minerals in the ore are chalcopyrite, galena, sphalerite, marmatite and pyrite ...Web

The first stage entails the bulk flotation of chalcopyrite and galena minerals from pyrite and sphalerite at pH 6.5–7.5, a pH favorable for the existence of tetrathionates (Bulatovic Citation 2007). The second stage entails the separation of sphalerite from pyrite, residual galena and chalcopyrite at pH 9–10.Web

Flotation has been extensively used to separate galena and sphalerite. Herein, a reagent scheme comprising aerofloat collectors and Zn 2+ and SO 3 2− …Web