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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 parameters on the galena and ...
In the flotation of copper sulfides, pyrite is often activated by Cu²⁺ ions dissolved from copper-bearing minerals in alkaline media (pH ˃ 9), which results in pyrite entering the copper ...
The flotation processes for iron minerals were mainly divided into anion direct flotation and cationic reverse flotation [8], [10]. The use of sodium oleate as the collector in the direct flotation of iron-bearing minerals has been practiced for a long time [12], [13].
A sequential flotation process was proposed to separate arsenic-bearing minerals from copper concentrates (Fig. 15), in which a bulk Cu-As concentrate is produced first, and subsequent flotation stages at pH 11 and varying redox potential, from reducing to oxidizing conditions, are implemented (Tayebi-Khorami et al., 2017).
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 ...
In the study, batch cleaner tests were conducted to confirm the target regrind size and select the cleaner pH conditions. The objective of the high pH, collector-starved environment in the cleaners is: To liberate and reject attached silicates, Depress the previously-floated pyrite. If the floatability imparted on the pyrite in rougher flotation is not adequately ... Effect …
The effect of iron, copper, and cadmium on the flotation of a mock lead was also investigated [5]. ... Flotation was conducted at various pH conditions from pH 7.5-10.0 while PAX and …
Fig. 2 shows that as pH increased from 9.0 to 10.5 and then to 11.5, the pyrite recovery obtained from the flotation of the ore with 5 % pyrite decreased steadily from 94.5 to …
Most articles published on the flotation of iron oxide minerals with oleate involve the effects of pH on the interfacial properties of the iron oxides as a function of pH, together with some ...
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 covers different types of collecting agents used in reverse iron ore flotation, the surface characteristics of minerals commonly present in iron ores (e.g., iron oxides, quartz, alumina-bearing ...
Enrichment of cobaltite bearing magnetite-rich ore with the flotation method: The effect of anionic sulfhydryl collectors at different pHs Pouya Nazari a, ... for sulfur and its strong attraction to iron, nickel, copper, and sulfur, cobalt primarily forms associations with these elements. ... at natural pH, and 600-700g/t PAX as a collector ...
Fig. 2 shows that as pH increased from 9.0 to 10.5 and then to 11.5, the pyrite recovery obtained from the flotation of the ore with 5 % pyrite decreased steadily from 94.5 to 40.6 % and then to 10.3 %. Hence, a direct link between the decreased pyrite recovery in Fig. 2 and the increased Cu grade in Fig. 1 when pH increased could be drawn. The decreased …
The micro-flotation results showed that the mass recovery increased by 40% at 20 W of applied ultrasonic power. The positive effect of UPT on the copper-bearing shale flotation was related to: i) generation of ultrafine bubbles due to the acoustic cavitation phenomenon and ii) the cleaning effect through transient bubble collapse.
The effects of pH, flocculant type and dose, mixing duration, and rate on flocculation were examined using jar experiments. It was seen that better flocculation …
The aim of this paper is to provide a well-detailed, well-referenced source for the current status of iron ore flotation, and thus provide a useful guide to its future development and to further ...
Although basic porphyry copper flotation and metallurgy has remained virtually the same for many years, the processing equipment as well as design of the mills has continually been improved to increase production while …
depressant dosage, 100g/t. Relative significance of flotation parameters (based on difference between max and min. values) indicates that pH has the most significant effect on the recovery of nickel, copper and cobalt during flotation. Analysis of variance showed that pH and depressant dosage were the most significant parameters affecting the
1. Introduction. The flotation process is a separation technique primarily used in mineral processing for the recovery of minerals (Wills and Finch, 2016), that also finds application in other industrial processes such as wastewater treatment and paper recycling (Saththasivam et al., 2016, Vashisth et al., 2011).Separation of mineral particles by flotation takes advantage of …
The Importance of pH in Flotation. In flotation, pH control is a vital method to control selective mineral separation. A standard depressant …
First-principles density functional theory calculations were used to reveal the role of the hydration of the goethite surface and its effects on flotation reagents from a microscopic perspective, and showed that DDA was adsorbed on the surface ofGoethite by hydrogen bonds in the absence of hydration.
The flotation experiments were performed with 1 kg samples in a 4 litre cell using the control system described in this paper. Alkyl xanthates were used in the copper and zinc flotation and copper sulphate for activation in the zinc flotation. The copper and zinc flotations were carded out at pH 11.5 and 12, respectively.
This study aims to investigate the effects of operational variables on concentrate grade, recovery, separation efficiency, and kinetic parameters of the copper flotation process. For this purpose, the effects of the pulp solids …
1. Introduction. In the flotation of sulphide minerals, collectors belonging to the xanthate class are most commonly used. Activators are chemical compounds usually added to promote the interaction of collector molecules with the mineral surfaces (Rao, 2003).The most common activator used in the flotation industry is copper sulphate and it was traditionally …
Froth flotation of high-iron marmatite particles activated by ammoniacal copper(II) solution has been studied in this work. This study was performed on single marmatite mineral of 76–125μm in ...
Flotation Tests. The slag was crushed in a jaw crusher and ground in a ball mill and then sieved. N-ethyl-O-isopropyl thiocarbamate (Z-200), ethyl xanthate, butyl xanthate, isopentyl xanthate and butylamine dithiophosphate were used as collectors; terpineol oil as frother; sulphuric acid, lime, sodium hydroxide and sodium carbonate as pH regulator.
1. Introduction. Wet milling in ball mills followed by flotation is the general practice employed in the beneficiation of copper sulphide ores in which the major minerals of commercial significance typically are chalcopyrite (CuFeS 2), bornite (Cu 5 FeS 4), covellite (CuS) and chalcocite (Cu 2 S). The flotation response of ground minerals can be influenced by the …
economic to acid heap leach the stockpile. The recovery of these copper minerals by flotation or. hydrometallurgy from ores, typically containing 0.5%TCu (open pit mines) and 1-2%TCu (underground ...
flotation circuit. pH EFFECT ON SULPHIDE MINERAL FLOTATION Copper and iron bearing sulphide minerals are the two predominant minerals being floated in the EHM circuit with …
Despite the same effect from pulp pH, reverse effects from other variables were observed for copper recovery. Process optimization revealed that maximum copper recovery …
