Customer case aboutthe recovery of gold in copper flotation

the recovery of gold in copper flotation

Copper Flotation Mineral Processing & Metallurgy

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 reducing operating and maintenance costs. Also, considerable attention is paid to automatic sensing devices and automatic controls in order to assure maximum metallurgy and

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Silver Gold Recovery Flotation Process

A total recovery of more than 97% of the gold and silver is made by flotation, while the combined flotation-cyanidation process gives an overall extraction of 95%. The installation is much more compact and its capital cost far less than one embodying fine grinding and cyaniding of the whole tonnage, and it can be run with lower operating

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Increase Gold recovery in Copper flotation Froth

Froth Flotation (Sulphide & Oxide) (grade), to raise this you need to reduce the overall recovery, and lose copper. If the gold is separate than you need to adjust the scavenger and re-cleaner circuits to get more recovery of the gold by adjusting the reagents. (Note you may lose copper doing this also).

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Pyrite-Gold Recovery in Copper Rougher Flotation Tailings

Cum. Gold Recovery (%) 50 55 60 65 70 75 80 85 Cu rougher feed aerated Cu feed non-aerated Figure 2. Effect of aeration condition on (a) gold flotation rates and (b) gold flotation behaviour in different test conditions (Cu rougher feed aerated and non-aerated) using SIBX/XD5002 as collector, p80=38 µm.

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Flotation of Gold and Gold-Bearing Ores ScienceDirect

Most problems in gold ore flotation are not connected with floating metallic gold. The flotation recovery of free gold (throughout the text free gold is synonymous with liberated gold) is largely affected by physical constraints such as the shape and size of the gold

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Gold Flotation Mineral Processing & Metallurgy

Where a high sulphide recovery is demanded, flotation methods are now in general use, but in the days before flotation was known, a large part of the world’s gold was recovered by concentrating the gold-bearing sulphides on tables and smelting or regrinding and amalgamating the product. Though the modern trend is away from the use of tables

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Flotation of Gold and Gold-Bearing Ores ScienceDirect

Most problems in gold ore flotation are not connected with floating metallic gold. The flotation recovery of free gold (throughout the text free gold is synonymous with liberated gold) is largely affected by physical constraints such as the shape and size of the gold

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Influence of gold mineralogy on its flotation recovery in

The present study investigates the implications of gold mineralogy on its flotation recovery, in a typical porphyry copper–gold ore (1.7 g/t Au feed grade). Also, flotation strategies to optimise gold recovery and grade without compromising copper recovery and grade were examined.

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Optimisation of gold recovery by selective gold flotation

Optimisation of gold recovery by selective gold flotation 231 S-701 was shown to give optimal recovery in an acid float, at an approximate pH of 4.5. S-701 could be used to recover the majority of the pyrite associated gold and then with either xanthate or one of the other new collectors (e.g. F-100) the copper could be recovered at the basic pH.

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(PDF) Au-Ag recovery from complex ore by flotation

Au-Ag recovery from complex ore by flotation. are then pyrometallurgically processed to produce gold and copper. However, the concentrates contain significant amounts of arsenic, severely

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Sulphide Flotation an overview ScienceDirect Topics

Many copper–gold concentrators have a combination of flash flotation and gravity separation in the milling circuit to enhance overall free gold recovery. The reason for the inclusion of gravity separation at these concentrators is that the coarse free gold is not recovered effectively in the flash flotation cell.

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(PDF) A Review of the Flotation of Copper Minerals

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 mines) is of great commercial importance.

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Flotation Froth an overview ScienceDirect Topics

Copper (or metal) recovery percentages of the flotation circuits of a copper mine/mill are extremely important. For example, it is estimated that for a plant processing 50,000 tonnes of ore containing 1% copper per day, increasing the copper recovery from 86 to 87% of that contained in the ore could increase revenues by approximately $4 million

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Lower-pH Copper Flotation Reagent System Department of

It flocculates fine material and may occlude fine copper-sulfide particles. Lime increases the viscosity of the mineral slurry and tends to hinder aeration, slowing flotation kinetics. In addition, the calcium ion also has been shown to decrease recoveries of lead and molybdenum-sulfides and to reduce the recovery of free gold.

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Improving the recovery of gold and copper in a CIP

In the early stages of the operation the overall gold recovery achieved averaged 61% and copper recovery was 74%. The plant was experiencing problems in the leach, adsorption, elution and electrowinning sections mainly as a result of the presence of copper in the ore.

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Flotation Solutions Maximizing Mineral Recovery Nalco

A copper mine in South America partnered with Nalco Water to help achieve their operational goals. The goals included improving recovery through their copper flotation circuit, increasing productivity, and ultimately reducing the total cost of operations while ensuring a safe production environment.

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Optimisation of gold recovery by selective gold flotation

The flotation recovery of free gold is largely affected by physical constrains as it is generally accepted that gold finer than about 150 µm can be floated with most collectors including, in

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Flotation collectors Solvay

Designed to operate across a broad range of alkalinity levels and provide faster flotation kinetics, our flotation collectors have become the industry standard in the recovery of copper, gold, molybdenum and other metals.

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How to calculate grade and recovery concentrate?-Ore

The flotation recovery rate: Refers to the final product quality was obtained by various processing ore dressing method of the percentage of gold content. According to the calculation theory and the actual recovery rate of two methods.

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Pyrite-Gold Recovery in Copper Rougher Flotation Tailings

The present study investigates the effect of regrinding and aeration on the separation of pyrite from gold in copper rougher flotation tailings (0.07% Cu, 0.61g/t Au, tail grades).

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