Froth Flotation in Saline Water

depressing effect of Ca ions on molybdenite flotation is augmented, and different pyrite depressants are needed. Keywords: Froth flotation, Salt flotation, Cu sulfides flotation; saline water; seawater flotation Froth Flotation in Saline Water† 1. Introduction Water is a medium in which flotation takes place

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Flotation of Pyrite - Metallurgist & Mineral Processing ...

Sodium silicate was somewhat effective in causing a differential or selective flotation of copper, as chalcopyrite from pyrite by keeping pyrite from floating. Sodium hydroxide and sodium sulfide gave, in most cases, a distinct separation of sphalerite from chalcopyrite; i.e., a high copper and low zinc by suppressing the flotation of sphalerite.

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Chemistry Books | Extraction of Copper From Copper Pyrites ...

Jun 15, 2018· The ore is crushed and then concentrated by froth-floatation process. What is froth floatation process? ... The copper pyrite is partly converted into sulphides of copper and iron.

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US5171428A - Flotation separation of arsenopyrite from ...

Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO 3 - ions at elevated temperature and pH below about 8 for a period sufficient to impart a selective depression property to the arsenopyrite. On addition of a collector the pyrite is rendered floatable, enabling froth flotation to achieve a concentrate rich in pyrite and tailings ...

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Pyrite Depressant - Froth Flotation (Sulphide & Oxide ...

Flotation of copper at different alkaline pH from 7upto 10 and using different Xanthates as collector vs. recovery of copper may give some clue. Minimum Pyrite obtained in copper concentrate is the starting point for further flotation test work. Depressing Pyrite is always a tricky matter.

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Froth Flotation | Definition of Froth Flotation by Merriam ...

Froth flotation definition is - flotation in which air bubbles are introduced into a mixture of finely divided ore or other material with water and a chemical that aids attachment of the bubbles to the particles of the desired material and its recovery as a froth.

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Flotation of a copper sulphide ore from Okiep using thiol ...

flotation of pyrite were established (Bradshaw and O'Connor, 1994). This paper discusses the differences in the performances obtained in the froth flotation of Okiep ore with the selected collectors: ethyl xanthate (C2-X), di-ethyl-dithiophosphate (di C2-DTP) and di-ethyl-dithiocarbamate (di-C2-DTC) at various dosages and the mechanisms ...

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Recovery of pyrite from copper tailings by flotation ...

The recovery of pyrite at 5 min of flotation is 97.8%, and at 7 min of flotation the maximum estimated recovery of 99.1% is reached. In order to produce a concentrate with a pyrite grade closest to 90%, and a recovery above 90%, 3.5 min were selected for the recleaner flotation stage as the optimum flotation …

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Collectorless Flotation of Oxidized Pyrite | Request PDF

The authors propose the process for selective flotation of auriferous pyrite and arsenopyrite, where the combination of xanthate, 2-hydroxylpropyl ester of diethyldithiocarbamate acid (HPEDEDCA ...

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Rcovery of gold in pyritic ores - Mine Engineer.Com

Recovery of Gold in Pyritic Sulfide Ores ... First is froth flotation, and second is cyanidation of the ores. ... The pyrite in which small amounts of gold occurs is of crystalline variety (primary pyrite). The characteristics of primary pyrite are a absence of porosity, an extreme brittleness, a resistance to oxidation, and the existence of ...

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FURTHER DEVELOPMENTS IN THE CONTROL OF LEVEL IN …

Further Developments in the Control of Level Abstract in Flotation Columns M. H. Moys, ... of methods based on the measurement of conductivity across the froth­ ... applied to pyrite flotation, because the conductivity of the slurry

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Copper Flotation - Elmhurst College

The graphic on the left is a "middlings thickener". The bubbles that flow over the edge of the first set of flotation tanks (inside the mill building) end up in this thickener. By then the bubbles have broken and the slurry is poured into the center of this round tank.

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Pyrite Flotation - Froth Flotation (Sulphide & Oxide ...

Can you list the factors affects the floatability of pyrite from refractory low grade ore.I used a Wemco lab flotation cell and aimed on analysing factors like collector dosages (PAX), Activator (Copper sulphate),MIBC, pH and others like pulp density and particle size (70 and 150 microns) .However

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Gold Flotation - YouTube

Aug 25, 2016· A shortened video of the gold flotation process from a heavy sulphide ore. 92% gold recovery. The flotation concentrate contains pyrite, arsenopyrite and sphalerite and gold. https://

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Froth Flotation Method - JXSC Machine

The froth flotation method is widely used to treat various veins of gold and silver ores for the following reasons: (1) In most cases, the froth flotation process can enrich gold and silver in sulfide concentrate to the greatest extent and discard a large number of tailings, thus reducing the smelting cost.

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Froth flotation - Wikipedia

Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic. This is used in mineral processing, paper recycling and waste-water treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century.

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Pyrite Depressant on copper ore - Froth Flotation ...

Flotation of copper at different alkaline pH from 7 up to 10 and using different Xanthates as collector vs recovery of copper may give some clue. Minimum Pyrite obtained in copper concentrate is the starting point for further flotation testwork. Depressing Pyrite is always a tricky matter.

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Pyrite Depression By Reduction Of Solution Oxidation Potential

----- PYRITE DEPRESSION BY REDUCTION OF SOLUTION OXIDATION POTENTIAL Department of Mineral Engineering University of Utah Salt Lake City, Utah 84112 for ENVIRONMENTAL PROTECTION AGENCY WATER QUALITY OFFICE Grant Number 12010 DIM December, 1970

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Pyrite recovery mechanisms in rougher flotation circuits ...

From top of froth grade measurements along the rougher bank, it was observed that a fraction of fine pyrite was also recovered by true flotation (top of froth grade increasing), considering that the solids in this class were more liberated.

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EP0568672B1 - Flotation separation of arsenopyrite from ...

Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO3- ions at elevated temperature and pH below about 8 for a period sufficient to impart a selective depression property to the arsenopyrite. On addition of a collector the pyrite is rendered floatable, enabling froth flotation to achieve a concentrate rich in pyrite and tailings ...

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Flotation Froth - an overview | ScienceDirect Topics

The depressing action of cyanide on pyrite during froth flotation is well known (Sutherland and Wark, 1955) and is widely exploited on many flotation plants to selectively separate copper minerals from pyrite.

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The effect of saline water on copper activation of pyrite ...

Jan 15, 2019· In froth flotation, hydrophobic particles are supposed to attach to the rising bubbles, float to the pulp surface and are recovered as a froth product (Hirajima et al., 2016). ... Pyrite flotation was conducted in fresh water and seawater and results are shown in Fig. 3. In the absence of copper ions, pyrite recovery was 32.7% and 12.8% in ...

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Flotation of Pyrite from Coal.

Pyrite is removed from coal by a 2-stage froth flotation. In the 1st stage, coarse pyrite is removed as underflow in a conventional froth flotation operation. In the 2nd stage, the froth product from the 1st stage is subjected to froth flotation by using a coal flotation depressant and a pyrite ...

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Introduction to Mineral Processing

Froth flotation is considered to be the most widely used method for ore beneficiation. In ore beneficiation, flotation is a process in which valuable minerals are separated from worthless material or other valuable minerals by inducing them to gather in and on the surface of a froth layer.

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Alternatives For Sodium Cyanide For Flotation Control ...

&ER& United States Environmental Protection Agency Industrial Environmental Research Laboratory Cincinnati OH 45268 Research and Development EPA-600/S2-81-157 Oct. 1981 Project Summary Alternatives for Sodium Cyanide for Flotation Control E. J. Mezey, D. W. Neuendorf, G. Ray Smithson, Jr., and James F. Shea Cyanide has long been looked upon as the classical poison and …

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(PDF) Pyrite Flotation: A Review - ResearchGate

Pyrite Flotation: A Review ... were carried out to investigate the flotation behavior of pyrite samples taken from different regions of Turkey. ... of sulphide mineral concentrates by froth ...

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What is the use of xanthate in the froth flotation process ...

1. Xanthate Used in Pyrite Froth Flotation Process In flotation of pyrite with xanthate, butyl xanthate is usually used. Generally, after the activator (copper sulfate) is added to the pulp, the mixed emulsifier of xanthate, pine oil and water can...

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Clay and pyrite in copper concentrate VS frother - Froth ...

Hi my dears. I am researchers in Iran Sarcheshmeh Copper Mine. One of the problems concentrator increases the amount of clay minerals and pyrite in flotation concentrates and the final grade will be reduced. What do you suggest for chemicals? What is the …

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FUNDAMENTAL SURFACE CHEMISTRY AND FROTH …

(specifically two types of quebracho: Tupasol ATO and Tupafin ATO) in the froth flotation process as a depressant for gangue minerals. Two ore types, copper and fluorite, were researched. The primary gangue mineral of interest was calcite for the fluorite ore, while it was pyrite for the copper ore.

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(PDF) A review on electrochemical behavior of pyrite in ...

A review on electrochemical behavior of pyrite in the froth flotation process Article (PDF Available) in Journal of Industrial and Engineering Chemistry 47 · December 2016 with 377 Reads

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