Contact Us

(PDF) Effect of flotation reagents in zinc recovery from

To enhance zinc recovery an effective disperssing reagent could increase the flotation selectivity of these tailings. Among the dispersants tested, sodium hexametaphosphate gave a higher zinc grade...

(PDF) The role sodium sulphide in amine flotation of

The flotation results showed a maximum recovery of 91.91 % with 1.68 % of zinc in the tailings after an eleven-minute flotation. Considering the mean results of all the tests,

Mechanism in Amine Flotation of Smithsonite: An XPS,

2020-4-20  Many flotation methods employed for recovering zinc oxide minerals have been studied and applied, which involves pre-sulfidization or direct flotation using some collectors such as amines, xanthates, mercaptans, fatty acids and chelating agents [5].

Flotation of zinc oxide ores by cationic and mixed

2012-10-1  In this study, for the first time, Armac T, as an amine collector, is used selectively for flotation of smithsonite. The mixed collector of Armac C and Armac T acts more effective than each of them alone. In the optimum conditions, the mixed collector consumption is significantly decreased. Using the mixed collector, there is no need to any depressant reagents. In the flotation of smithsonite using Armac T,

Reagents in zinc recovery from Pb- flotation tailings of

2021-5-11  Sulfidization-flotation is the most commonly used method for the recovery of zinc oxidized ores. Usually sodium sulfide is the sulfidizing agent which yields the best performance in most flotation systems [5,6,7]. Salum et al. [8] studied on the role of sodium sulfide in amine flotation of silicate zinc minerals. They found that

Reagents in calamine zinc ores flotation ScienceDirect

2005-2-1  Oxidised zinc ores are traditionally floated with fatty amines as collector. The effectiveness of this reagent requires a pre-sulphidisation stage with sodium sulphide in conjunction with soda ash. Especially in the case of calamine ores, a dispersing agent becomes necessary. The collector must be emulsified with a fuel oil and the frother.

Flotation of zinc silicate ore: A focus on effective

2021-5-12  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 [3, 9, 11, and 12].

The role of sodium sulphide in amine flotation of

1992-3-1  Amines, on the other hand, are not suitable collectors for sulphides, which indicates that sulphidization plays a different role in silicate zinc minerals systems than with oxidized copper and lead ores. Sodium sulphide is the sulphidizing agent which yields the

Sulphidization flotation for recovery of lead and zinc

Flotation using chelating agents is another alternative for beneficiation of zinc oxide minerals (17,18,19,20). The most common flotation technique used commercially for the treatment of zinc oxide...

Flotation Behavior of Iranian Oxidized Zinc Ore Using

2015-4-1  Oxidized zinc ore may be concentrated by flotation in the presence of a soluble sulphide and soluble compound of an aliphatic amine containing from 8-18 carbon atoms [3]. Abramov also stated the best process for the flotation of smithsonite was by using of laurylamine acetate as a collector after sulphidizing the mineral with sodium sulphide.

Physicochemical studies of oxide zinc mineral flotation

2016-9-29  The studies on oxide zinc ore indicate a maximum bench scale flotation recovery of 84.5 % with zinc grade 24.5% in the presence of dodecylamine at pH 11.5. There are no significant variations in recovery of cationic and anionic and mixed collectors, however, amine and mixed collector flotation show to be more selective than anionic collectors.

Froth flotation of oxidized zinc ores Internat,

We have found that oxidized zinc ores in general, and the oxidized zinc-bearing tailing resulting from flotation concentration of the lead present in mixed lead-zinc oxidized ores in particular, may be concentrated by flotation in the presence of a soluble sulphide and a soluble compound of an aliphatic amine containing from 8 to 18 carbon atoms.

Flotation Conditioners of Oxidized Zinc and Lead Ore

2019-5-24  When the oxidized zinc ore is floated with an amine collector, it is difficult to separate the gangue minerals mainly composed of zinc oxide and calcium magnesium carbonate. At the same time, the presence of ore slime also affects the flotation using amine collectors.

Flotation of a Low-Grade Zinc Oxide Ore After Surface

2019-6-24  Flotation of the low-grade zinc oxide ore was achieved after surface modification by sulfidation and reduction at high temperature. A flotation concentrate containing 32.1% Zn and 8.0% Pb was obtained, and the Zn and Pb recoveries were 91.3% and 92.3%, respectively.

Effects of Additives in Froth Flotation of Silicate Zinc

2014-5-2  Structures of (a) sodium hexametaphosphate and (b) stearyl amine [6]. In Thailand, silicate zinc ore of hemimorphite type at Tak province is a raw material in production of zinc metal by hydrometallurgy and electrometallurgy. Sodium hexametaphosphate, sodium sulphide and stearyl amine have been used as additives in froth flotation. However, a

Flotation of zinc silicate ore: A focus on effective

2021-3-28  such as smithsonite, hemimorphite and calamine via froth flotation method [7-10]. 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 [3, 9, 11, and 12]. Sulphidization followed by flotation

Reagents in zinc recovery from Pb- flotation tailings of

2021-5-11  Sulfidization-flotation is the most commonly used method for the recovery of zinc oxidized ores. Usually sodium sulfide is the sulfidizing agent which yields the best performance in most flotation systems [5,6,7]. Salum et al. [8] studied on the role of sodium sulfide in amine flotation of silicate zinc minerals. They found that

Mechanism in Amine Flotation of Smithsonite: An XPS,

2020-4-20  minerals Article Improved Understanding of the Sulfidization Mechanism in Amine Flotation of Smithsonite: An XPS, AFM and UV–Vis DRS Study Ruizeng Liu 1, Bin Pei 1, Zhicheng Liu 2, Yunwei Wang 1, Jialei Li 1,* and Dianwen Liu 1,* 1 Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China; [email protected] (R.L.); [email protected]

Flotation Reagents Mineral Processing & Metallurgy

2021-5-14  This data on chemicals, and mixtures of chemicals, commonly known as reagents, is presented for the purpose of acquainting those interested in froth flotation with some of the more common reagents and their various uses.. Flotation as a concentration process has been extensively used for a number of years. However, little is known of it as an exact science, although, various investigators

Flotation of a Low-Grade Zinc Oxide Ore After Surface

2019-6-24  Flotation of the low-grade zinc oxide ore was achieved after surface modification by sulfidation and reduction at high temperature. A flotation concentrate containing 32.1% Zn and 8.0% Pb was obtained, and the Zn and Pb recoveries were 91.3% and 92.3%, respectively.

Reagents in zinc recovery from Pb- flotation tailings of

2021-5-11  Sulfidization-flotation is the most commonly used method for the recovery of zinc oxidized ores. Usually sodium sulfide is the sulfidizing agent which yields the best performance in most flotation systems [5,6,7]. Salum et al. [8] studied on the role of sodium sulfide in amine flotation of silicate zinc minerals. They found that

Effects of Additives in Froth Flotation of Silicate Zinc

2014-5-2  Structures of (a) sodium hexametaphosphate and (b) stearyl amine [6]. In Thailand, silicate zinc ore of hemimorphite type at Tak province is a raw material in production of zinc metal by hydrometallurgy and electrometallurgy. Sodium hexametaphosphate, sodium sulphide and stearyl amine have been used as additives in froth flotation. However, a

Flotation Conditioners of Oxidized Zinc and Lead Ore

When the oxidized zinc ore is floated with an amine collector, it is difficult to separate the gangue minerals mainly composed of zinc oxide and calcium magnesium carbonate. At the same time, the presence of ore slime also affects the flotation using amine collectors.

Physicochemical studies of oxide zinc mineral flotation

The studies on oxide zinc ore indicate a maximum bench scale flotation recovery of 84.5% with zinc grade 24.5% in the presence of dodecylamine at pH 11.5. There are no significant variations in recovery between cationic and anionic and mixed collectors, however, amine and mixed collector flotation are more selective than anionic collectors.

Flotation of zinc silicate ore: A focus on effective

The present study addresses the direct flotation route for the concentration of a zinc silicate ore. Flotation of hemimorphite faces some challenges due to the similarity of hemimorphite and quartz surface properties. XRD, and XRF analyses, optical mineralogy and SEM with X-ray mapping were performed for characterization. The results showed that the quartz, hemimorphite, calcite and dolomite

Determination of maximum zinc recovery of Vazante

The results showed that zinc recovery increased very fast in the first three minutes of the flotation tests and kept increasing at a low rate until it reached its final value, after eleven minutes of flotation. The highest zinc recovery was 91.91 %, represented by the test executed in the sample 4203, and the lowest recovery was 89.37 %

Froth flotation of ores PETROVICH; VOJISLAV

Beneficiation of metallic ores selected from the group of zinc, bismuth, cobalt, nickel, titanium, zirconium, thorium, chromium, molybdenum, wolfram, and uranium, by froth flotation process using commercial amines in conjunction with oxalic acid or alkali oxalates to obtain pure concentrates of said metal values comprises; adding to a water suspension of finely divided ore of amine type

A Density Functional Based Tight Binding (DFTB+)

2018-1-1  OneMine is the collective online digital library of mining and minerals technical papers, periodicals, books, and publications from professional societies

Flotation Reagent, Flotation Agent, Flotation Reagents

Several-time dosing: Add the flotation reagents in several times along roughing, concentrating and scavenging. Generally, add 60%~70% of the total amount before the flotation stage, and the rest of reagents is added to the appropriate locations in batches.