flotation oxidised copper ore

Flotation Oxidised Copper Ore

Copper Flotation - Mineral Processing & Metallurgy

Flotation of Copper Ores. When the ore is free from pyrite, the function of the lime, whatever the reagent mixture, is to precipitate dissolved salts and to maintain the alkalinity of the pulp at the value which has been found to give the best results ; soda ash is seldom employed for this purpose.

(PDF) Flotation of an Oxidized Copper Sulfide Ore

The aim of this study was the recovery of copper from the oxide copper ore by froth flotation and agitating sulphuric acid (H2SO4) leaching. The ore with 4.21% copper grade used in this study was ...

(PDF) A Review of the Flotation of Copper Minerals

These oxidised copper minerals are found in weathered regions of most copper sulphide ore bodies The overlaying oxidic ore is usually stockpiled after it is removed from the sulphide lode and left ...

A New Application For Flotation Of Oxidized Copper Ore

flotation of oxide copper-cobalt ores, using sodium hydrosulphide as the sulphidising agent, has been practiced in Katanga, Democratic Republic of Congo. With sodium

The Effects of Different Depressants on Oxidised Copper ...

Apr 01, 2014 · For refractory oxidised copper ores of Huidong Sichuan province, studing the different depressants on the influence of oxidised copper ores flotation behavior. The results showed that: the depressanting effect of the combination of sodium hexametaphosphate primarily is better.

Copper Ore Processing Methods

Oxidized ores in which malachite, azurite, and chrysocolla are the predominant copper minerals that do not respond either to gravity or simple flotation methods. Sulfide-filming of the carbonates followed by flotation of the filmed minerals, or direct leaching followed by precipitation of the copper from the solution may be employed for such ores.

flotation copper oxide - Froth Flotation (Sulphide & Oxide ...

Froth Flotation (Sulphide & Oxide) ... Radio Hill in Australia successfully used the Ausmelt reagent AM28 (an alkyl hydroxamate) to float mixed sulphide/oxide copper ore, increasing recovery from a low of 40 to 50% up to 70%. They used AM28 to replace sulphidisation of oxide minerals, in conjunction with standard sulphide collectors to recover ...

Treatment of Mixed Sulfide Oxide Ores of Copper

metallurgical contentsulfuric acid as a solventtreatment of oxidized copper by agitationsulfur dioxide and ammonia as solventsiron salts as solventsother solvents for oxidized coppercontrol of temperature during sulfationthe precipitantelectrolysissulfur-dioxide precipitationhydrogen sulfide as precipitantprecipitation by heat aloneother precipitantsmechanical handling of ore and solutionadvantage of sulfidizing flotation many of our largest copper deposits contain both sulfide and oxidized ...

RECOVERY OF COPPER FROM OXIDE COPPER ORE BY …

flotation tests were unsuccessful in terms of both recovery and grade of concentrate product. The highest copper recovery of concentrate was found as 61.35% with 8.69% copper content. The concentrate with highest copper grade of 34.65% was obtained with only 26.98% copper recovery. Unsuccessful flotation of the test

Copper extraction - Wikipedia

Copper oxide ores have occasionally been treated via froth flotation via sulfidation of the oxide minerals with certain chemicals which react with the oxide mineral particles to produce a thin rime of sulfide (usually chalcocite), which can then be activated by the froth flotation plant.

A technique to determine ore variability in a sulphide ore ...

Flotation performance of the sulphide minerals in the copper enriched ore is very much affected by the presence of secondary minerals and surface oxidation. Flotation of the ore from the sulphide zone is also negatively affected by the presence of the copper enriched ore.

Flotation of Oxidized Lead-silver Ores

mill on a mixed sulfide-oxide gold-silver-lead ore. Tables and flotation are used here, and about 200 tons of oxidized slime treated by flotation. In 1923, the Eureka Holly Mining Co. started operating a 90-ton mill at Eureka, Nev., using tables and flotation, on an oxidized lead-silver ore.

The recovery of oxide copper minerals from a complex ...

The preferred method for the flotation of oxide and mixed copper ores is sulphidisation. The reagents are typically sodium sulphide (Na 2 S) and sodium hydrosulphide (NaHS).

The effect of surface oxidation of copper sulfide minerals ...

The flotation of copper sulfide minerals is complicated by the presence of clay minerals. The industry is well aware of the difficulty in treating weathered copper ores containing clay minerals. Currently, the only way to treat this type of ores is to blend them at a small proportion with normal ores.

The effect of clay minerals on the process of flotation of ...

Mar 15, 2019 · There are some important differences between the flotation of copper ores and other applications. First, several types of mineral species that contain copper can be found (CuFeS 2, Cu 2 S, CuS, Cu 5 FeS 4, and Cu 3 AsS 4, among others) which respond differently to the oxidizing and reducing conditions of the particulate system. As a result, some ions such a copper, iron and arsenic can be …

Copper Ore Types: Sulfides vs. Oxides | INN

Copper sulfide ores are typically the most profitable types of copper ores to mine. That is because they have high copper content, and the copper in them can more easily be separated from unwanted ...

Flotation Oxidised Copper Ore - arbeidsprobleem.nl

These oxidised copper minerals are found in weathered regions of most copper sulphide ore bodies The overlaying oxidic ore is usually stockpiled after it is removed from the sulphide lode and left unprocessed as the sulphide ore is simpler to recover by conventional flotation procedures and thus, more attractive to the plant operator.

The effect of surface oxidation of copper sulfide minerals ...

Based on the flotation of copper ores containing both chalcopyrite and chalcocite, the flotation of chalcopyrite and chalcocite single minerals in the presence and absence of bentonite, and the zeta potential measurement of chalcopyrite, chalcocite and bentonite, it was found that the oxidation of chalcopyrite and chalcocite had a different effect on their interaction with bentonite.

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