Role of sodium sulfide in the flotation of oxidized copper, …
This paper reviews uses of sodium sulfide in the flotation of oxide minerals of copper, lead, and zinc. The activation and depression effects of sodium sulfide are of particular importance because of their applications with oxidized lead and copper ores. In spite of its industrial importance, the nature of the heterogeneous reactions between sulfide ions in …
Volatilization behavior of lead, zinc and sulfur from flotation
As shown in Table 1, Table 2, the chemical composition of the flotation products is primarily zinc, lead, sulfur, iron, silicon and calcium, and is characterized by the high content of Pb + Zn (29.35%), S (9.97%), SiO 2 (7.60%) and CaO (11.10%). The ratio of zinc oxide and zinc sulphide content is nearly 2.1 (ZnSO 4 and (Zn,Mn)Fe 2 O 4 are …
Influence of important factors on flotation of zinc oxide …
The influence of the pH adjusting reagent on zinc oxide flotation is shown in table 3. After adding 3000 g/t Na 2 S into the pulp, the given pH regulator was added to reach pH = 11. It is clear that using Na 2 CO 3 as a pH modifier can reduce both grade and recovery of zinc in the concentration while applying NaOH has desirable results.
Flotation of zinc oxide minerals from low-grade tailings by …
The main purpose of this study was to find the optimum values for factors affecting the Zn recovery rate using oxine or dithizone as a chelating agent collector during flotation in a Hallimond tube. Eight control factors, including four levels of pH, oxine/dithizone, corn starch, sodium thiosulfate, sodium citrate, sodium silicate, …
Flotation of zinc oxide ores by cationic and mixed collectors
And 43.37% Pb in the Pb concentrate was recovered, the corresponding Pb grade was 52.73%, total 84.42% Zn was recovered by the flotation of zinc sulfide minerals and zinc oxide minerals.
(PDF) Flotation of a Low-Grade Zinc Oxide Ore After Surface
The results showed that zinc sulfide was generated at the outer layer of the zinc oxide mineral after thermal modification, resulting in an improvement of the flotation performance.
Flotation of zinc and lead oxide minerals from Olkusz region calamine
A flowsheet for recovery of sulphide minerals of zinc and lead in the form of the Zn-Pb bulk concentrate was presented. In the following part, preparation of the feed for flotation of Zn-Pb oxide minerals and optimal conditions for separation from it iron sulphide minerals, represented by marcasite, were determined.
Flotation of Mixed Lead Zinc Sulphide Oxide and Oxide
Pb oxide minerals were recovered with sufficient recovery (84.43%) and grade (50.38%) through multistage sulfidization flotation while Zn oxide minerals cannot be recovered by sulfidization ...
Volatilization Kinetics of Zinc from the Flotation …
Volatilization Kinetics of Zinc from the Flotation Products of Low-Grade Lead–Zinc Oxide Ore during Carbothermic Reduction. by. Peng Zeng. 1, Chengyan …
Recent Progress on Chelating Reagents in Flotation …
Flotation is the most widely used method of enriching zinc oxide minerals for mineral processing. Chelating reagents have received extensive attention for the …
Sulphidization flotation for recovery of lead and zinc from oxide …
A new flowsheet was developed to recover the valuable minerals from oxide or oxide-sulfide ores of lead and zinc. The flowsheet consisted of flotation of sulfide minerals, desliming and sulphidization-flotation of oxide minerals. The corresponding reagent system and techniques to the flowsheet were investigated. Batch and continuous …
(PDF) Flotation of zinc oxide ore using cationic …
At present, the most common flotation technique commercially used for the treatment of zinc oxide ores is sulfidized with Na 2 S followed by treatment with a conventional cationic collector, an ...
Influence of important factors on flotation of zinc oxide …
The most common flotation technique used commercially for the treatment of zinc oxide minerals is sulphidization with Na 2 S, followed by treatment with conventional cationic collectors, namely amine (Mckenna et al., 1949, Rey, 1954, Abramov, 1961, Önal et al., 2005, Pereira and Peres, 2005, Keqing et al., 2005, Hosseini and Forssberg, 2006a ...
Design and selection of flotation collectors for zinc …
Froth flotation is the most popular method for the recovery of zinc oxide minerals. However, easy to slime, complex composition, high solubility, and reagent control difficulty ( Chen and Tang, 2020, Ejtemaei et al., 2011 ) are severe obstacles on the …
Flotation of Aladag oxide lead-zinc ores
The hydrometallurgical route of zinc hydroxide and synthesis of nanocrystalline ZnO is a particularly attractive method to recover oxidized lead and zinc from lead-zinc flotation tailings. In Turkey, lead-zinc complex/mixed ores along with high iron content are not suitable for conventional mineral processing methods and need hydrometallurgical ...
Flotation | Mineral Processing, Separation & Beneficiation
bulk oil process. flotation, in mineral processing, method used to separate and concentrate ores by altering their surfaces to a hydrophobic or hydrophilic condition—that is, the surfaces are either repelled or attracted by water. The flotation process was developed on a commercial scale early in the 20th century to remove very fine mineral ...
A Process Mineralogy Approach to the Flotation of Complex Lead–Zinc
Flotation of the zinc oxide minerals smithsonite, hemimorphite and willemite with conventional reagents is not very selective due to similarity in the surface chemistry of the zinc and gangue minerals . Replacing sodium sulfide with sodium metabisulfite did not yield any better results at the same flotation conditions (results are …
Flotation of copper oxide minerals: A review
Copper oxide minerals are important copper resources, which include malachite, azurite, chrysocolla, cuprite, etc. Flotation is the most widely used method for the enrichment of copper oxide minerals in the mineral processing industry. In this paper, the surface properties of copper oxide minerals and their effects on the mineral flotation ...
A review of zinc oxide mineral beneficiation using flotation …
In recent years, extraction of zinc from low-grade mining tailings of oxidized zinc has been a matter of discussion. This is a material which can be processed by flotation and acid-leaching methods. Owing to the similarities in the physicochemical and surface chemistry of the constituent minerals, separation of zinc oxide minerals from …
A review of zinc oxide mineral beneficiation using flotation method
Owing to the similarities in the physicochemical and surface chemistry of the constituent minerals, separation of zinc oxide minerals from their gangues by flotation is an extremely complex process. It appears that selective leaching is a promising method for the beneficiation of this type of ore. However, with the high consumption of leaching ...
Efficient flotation recovery of lead and zinc from refractory lead-zinc
The feed ore of zinc oxide ore flotation process was the underflow of the hydrocyclones, and the flowsheet of industrial tests of zinc oxide ore flotation is shown in Fig. 8. The industrial tests were carried out for 17 days (from June 7, 2017 to June 23, 2017) for a total of 38 work shifts, and the cumulative results of industrial tests are ...
Influence of important factors on flotation of zinc oxide …
Zinc oxide minerals (primarily smithsonite and hemimorphite) are important sources of Zn. Flotation is the most widely used method of enriching zinc oxide minerals for mineral processing.
Flotation of Aladagˇ oxide lead–zinc ores
Oxide lead–zinc ore sample containing 10.17% Pb, 10.98% Zn, 57 g/t Ag and 164 g/t Cd was subjected to this experimental study and taken from Kayseri located in the foothills of the Aladağ Mountains, Turkey.Preliminary flotation tests with the ore sample indicated that there was no selectivity in terms of zinc recovery; therefore studies were …
Volatilization Kinetics of Zinc from the Flotation Products of …
Zinc extraction from oxide ore has been paid more and more attention to due to the exhaustion of zinc sulfide ore resources. In this work, the volatilization kinetics of Zn from the flotation products of low-grade lead–zinc oxide ore during carbothermal reduction in the temperature range of 900–1300 °C were investigated. The phase …
[PDF] Flotation of zinc and lead oxide minerals from Olkusz …
A comparative study of two-stage flotation of Zn and Pb oxide minerals using anionic, cationic, and mixed (cationic/anionic) collectors. A lead-zinc carbonate ore sample containing 2.5% Pb and 9.39% Zn was used in this research work. The sample was prepared from the Darreh-Zanjir mine located in the Yazd province (Iran).
Flotation of Aladagˇoxide lead–zinc ores
Flotation of Aladag oxide lead-zinc ores. K.Tahsin PEREK. Oxide lead–zinc ore sample containing 10.17% Pb, 10.98% Zn, 57g/t Ag and 164g/t Cd was subjected to this experimental study and taken from Kayseri located in the foothills of the Aladağ Mountains, Turkey. Preliminary flotation tests with the ore sample indicated that there was no ...
Hydrothermal Sulfidation and Flotation of Oxidized Zinc …
The oxidized zinc-lead ore used in the current study includes smithsonite and sphalerite as zinc minerals, and cerussite as a lead mineral, and it is a carbonate-hosted zinc-lead oxide ore. 2. The oxidized zinc-lead ore was sulfidized under the following conditions: particle size 74–58 μ m and the mole ratio of sulfur and zinc of 2.0 at 453 ...
Flotation of a Low-Grade Zinc Oxide Ore After …
Flotation of the low-grade zinc oxide ore was achieved after surface modification by sulfidation and reduction at high temperature. A flotation concentrate …
Flotation of Aladag oxide lead-zinc ores | Request PDF
The flotation and gravity separation of Aladag oxide lead-zinc ores which contained 10.2% lead (Pb) and 11% Zn was investigated [ 2 ]. The results show that a lead concentrate with 65.4% Pb was ...
Hydrothermal Sulfidation and Flotation of Oxidized Zinc …
Sulfidization flotation is commonly used to recover zinc oxide minerals from ores, and sulfidization is a critical stage. However, few studies on the microscopic mechanism of smithsonite ...