Effects of oxygen on kinetics of conditioning in sulphide ore flotation

Martin et al. [13] investigated the effect of nitrogen on the flotation separation of sulfides from complex ores and showed that pyrite floatability was enhanced after nitrogen conditioning. Also ...

The effect of high intensity conditioning on the flotation of …

DOI: 10.1016/S0892-6875(99)00123-5 Corpus ID: 98325915; The effect of high intensity conditioning on the flotation of a nickel ore, Part 2: Mechanisms @article{Chen1999TheEO, title={The effect of high intensity conditioning on the flotation of a nickel ore, Part 2: Mechanisms}, author={G. Q. Chen and Stephen Grano and …

Calculate Flotation Cell Capacities Volume vs Retention Time

An Example of flotation cell capacity and circuit retention time approximation: Estimate the volume of conditioners and flotation cells required to handle 9100 dry tons of ore per 24 hours at 30% pulp solids by weight, with an ore specific gravity of 3.1. Five minutes conditioning time and 15 minutes flotation time are desired.

Flotation

The FLOTATION PROCESS is one of the commonest methods of extracting the valuable minerals from certain classes of ores, and it is generally more efficient as regards the recovery of the minerals than any other process applicable to the treatment of similar types of ores. The metallic contents of the minerals are recovered from the …

The effects of dry grinding and chemical conditioning …

Pyhäsalmi sulphide ore – Chalcopyrite flotation. After the slurry was transferred to the flotation cell, conditioning for the chalcopyrite flotation was started by initiating the stirring and conducting the following chemical additions with the respective conditioning times: i. pH adjustment to 12 with a 10 % CaO solution, 2 min …

Action mechanism of high intensity conditioning in flotation …

SYNOPSIS The effect of conditioning energy on the flotation of gold, UaOe, and pyrite was investigated in the range 0,1 to 100 kWh per tonne of dry ore for various combinations of conditioning ...

Investigation into the flotation response of a sulphide ore …

An ore typical of the Merensky reef was acquired from one of the Merensky processing operations. The bulk sample was crushed, blended, riffled and split using a rotary splitter into 1 kg portions.Synthetic plant water (Wiese et al., 2005a, Wiese et al., 2005b) was used for all batch flotation tests.The 1 kg ore samples were milled in …

Effects of oxygen on kinetics of conditioning in sulphide ore flotation …

The conditioning of sulphide ore flotation begins with a grinding process and ends in a flotation cell at the moment a gas bubble catches a mineral grain. This kind of conditioning affects not only particle size distribution, but also the chemical properties of the mineral surface and the suspension. These chemical properties control, among ...

1 Froth Flotation – Fundamental Principles

1 Froth Flotation – Fundamental Principles. Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a mineral/water slurry. The particles with attached air bubbles are then carried to the surface and removed, while ...

Hydrodynamics intensification and interface control in the flotation …

Flotation conditioning, an essential part affecting the function of flotation reagent and flotation performance, has gradually become a key field for the process enhancement of flotation. ... The effect of high intensity conditioning on the flotation of a nickel ore. Part 1: Size-by-size analysis. Miner. Eng. (1999) G. Chen et al.

Flotation Conditioning

In flotation dry-crushed ore gives poor separations, and wet grinding is essential to secure effective wetting and sinking of the unwanted gangue particles. After passing through the grinding section, the resulting pulp must conform to two conditions. …

Flotation | Mineral Processing, Separation & Beneficiation

Richard Tilghman Weidner Laurie M. Brown. 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.

Flotation Process: Extracting Minerals from Ores

Conditioning: The ground ore is then mixed with water and various chemical reagents in a conditioning tank. The purpose of conditioning is to create a …

The role of surface cleaning in high intensity conditioning

The high intensity conditioning was conducted in a 1.0 L cylindrical conditioning tank, which consists of four baffles configurated across.A six-blade impeller was actuated by an overhead stirrer (Hei-Torque 100, German) with a speed range from 10 to 2000 rpm.To study the effect of surface cleaning on coal flotation, we employed a …

Froth Flotation

Flotation Mechanisms Grinding an ore has an important influence on flotation. For optimum results, valuable minerals should ... mechanism can be selective but generally wears off as flotation and/or conditioning time increases. Once withdrawn, a froth should break down rapidly, so excess froth in the downstream processes does

Flotation of copper sulphides assisted by high intensity conditioning …

SYNOPSIS The effect of conditioning energy on the flotation of gold, UaOe, and pyrite was investigated in the range 0,1 to 100 kWh per tonne of dry ore for various combinations of conditioning ...

Flotation | Mineral Processing, Separation

flotation, in mineral processing, method used to separate and concentrate ores by altering their surfaces to a hydrophobic or hydrophilic …

Distribution of reagents down a flotation bank to improve …

The strategy has been evaluated with Cu, Cu–Ni and Cu–Pb–Zn ore samples (Proulx, 2000). Results for the three types of ore show that the strategy does not deteriorate the flotation process performances, and justify full-scale trials. Results of laboratory and full-scale tests with the Cu–Pb–Zn ore flotation are presented in this paper ...

Effects of Surfactin, a Promising Carbonate Ore Collector, on …

Flotation experiments of surfactin showed that it works better at much lower amounts, at lower conditioning times, and regardless of temperature. Moreover, the magnesite yields obtained with both reagents were close (approximately 30%) in these selected collector amounts making the comparison of the two parameters whose effects …

(PDF) A model of conditioning in the flotation of a mixture …

Effect of the degree of conditioning on the kinetics of conditioning and flotation To gain a certain degree of conditioning, the sieved ore samples Ž37–149 mm. containing 50% pyrite ore and 50% chalcopyrite ore were conditioned for 5 min in a wide range of oxygen concentrations ŽTable 1..

The use of electrochemical measurements in the flotation of …

The mixed potentials of the sulphide minerals present in the ore were successfully logged during the conditioning stages of the flotation experiments. The minerals had different mixed potentials and the magnitude of the change in potential on addition of copper sulphate and sodium isobutyl xanthate differed depending on the …

Reagents used in the flotation of phosphate ores: A critical review

Karjalahti, K., 1972. Factors affecting the conditioning of an apatite. ore for agglomeration flotation. ... The performance of the collector in phosphate ore flotation was investigated by means ...

Froth Flotation of Iron Ores

The reagents used in iron ore flotation, including starch, amines and fatty acids, and the mechanisms of their interactions with the minerals in iron ore are …

Temperature and climate-induced fluctuations in froth …

Non-sulphidic flotation systems demonstrated increased collector and mineral solubilities at elevated temperatures, which were more sensitive to winter …

The effects of dry grinding and chemical conditioning during …

Sulphide ore flotation performance was superior after wet grinding. • Dry grinding activated pyrite. • Chemical conditioning during grinding improved the sulphide …

The influence of lime and sodium hydroxide conditioning on sulfide

The influence of two alkaline pH modifiers, namely sodium hydroxide and calcium hydroxide was investigated to evaluate and compare their effectiveness in pyrite rougher flotation of a refractory gold ore with a high sulfide sulfur grade (13% S 2-), using potassium amyl xanthate as the collector and Nascol 422 as the frother.The focussing …

Advances in the study of high intensity conditioning as a …

At the conclusion of conditioning in the Rushton HIC cell, the pulp was immediately transferred to the 4.8L Agitair flotation cell and 0.8L was representatively withdrawn to reduce the flotation volume to 4.OL to ensure a deeper froth drainage zone which results in higher concentrate grades.

Recovery of apatite from flotation tailings

The ore conditioning procedure was carried out in four stages: (a) suspension of the ore in water, percentage of solids 60% (pH 11.3); (b) ... These pH values are typical for the flotation of igneous phosphate ore in Brazilian phosphate industry [10], [14]. The mechanical agitation conditioning stage was performed in a 2 ...

The recovery of oxide copper minerals from a complex copper ore …

The objective of this study was to investigate the floatability of a complex Kansanshi mixed copper ore with a special focus on the sulphidisation process. Controlled potential sulphidisation (CPS) is preferred over slug sulphidisation as the industry standard for the flotation of oxide copper minerals. Two potential ranges were investigated in ...

Rare Earth Ore Flotation Principles and Kinetics

The flotation experiments were performed by varying the flotation cell energy input parameters of volumetric air input flow rate and flotation cell rotor speed depending upon the experiment matrix. Level in the flotation cell was maintained using a 20-liter conditioning tank. Frother and pH modifiers were added into the conditioning …

The effect of high intensity conditioning on the flotation …

High Intensity Conditioning improved pentlandite flotation from a nickel ore. Specifically, High Intensity Conditioning increased the flotation rate of pentlandite contained in the 8 to 75 μm particle size range. There was also a significant increase in the maximum recovery of pentlandite over the same particle size range.

Intensification of the flotation separation of potash ore …

The lowest flotation selectivity was observed for the fine-grained ore sample (0.1–0.25 mm). The combined ultrasonic treatment of this sample during conditioning and flotation approximately halved the recovery of NaCl in the potash concentrate (from 17.9 % to 9.9 %) and increased the KCl recovery from 89.9 % to 95.9 %.

Flotation of Rare Earths from Bastnasite Ore

At Mountain Pass. bastnasite concentrates are produced by froth flotation. In the milling operation the ball mill discharge containing 9.5 pct RE2O3 is heated to boiling and conditioned with lignin sulfonate, a gangue depressant, and fatty acid collector. Flotation is carried out at a pulp temperature of about 70° C.

Froth Flotation

In addition to the two primary flotation agents there are also a number of modifying and conditioning reagents, which control a variety of ore and flotation circuit variables [13]. For instance, lime is a depressant for pyrite (FeS2) in the flotation separation of …

A model of conditioning in the flotation of a mixture of …

DOI: 10.1016/S0301-7516(00)00003-X Corpus ID: 95416702; A model of conditioning in the flotation of a mixture of pyrite and chalcopyrite ores @article{Kuopanportti2000AMO, title={A model of conditioning in the flotation of a mixture of pyrite and chalcopyrite ores}, author={Hannu Kuopanportti and Teemu Suorsa and Olli Dahl and Jouko Niinim{"a}ki}, …

On the Flotation of a Low Grade Chromite Ore

These include the concentrations of the collector and depressant, pulp pH and conditioning time. From an ore feed grading 20.27% Cr2O3, a chromite concentrate of 28.71% Cr2O3 with recovery of 94. ...