Porphyry copper deposits are important sources of copper and typically processed by flotation to produce copper concentrates. As mining areas become deeper, the amounts of impurities, such as sphalerite, can be increased in copper ores, so the appropriate depression of sphalerite floatability should be achieved to obtain saleable copper …

A different approach was made towards flotation of mixed copper ore using xanthate and hydroxamate as traditional and chelating collector to recover both sulphide and oxide minerals of copper ...

The artificial mixed mineral flotation experiment results showed that a concentrate with Cu grade of 29.01% and As grade of 7.51% was obtained, with Cu recovery of 80.20% and separation efficiency ...

The two ore samples were mixed at 7 : 3 (enargite : chalcopyrite) by weight ratio to prepare a mixed ore sample with As content at 3.16 and 18.25 mass% Cu for the flotation study.

For mixed oxide-sulfide copper ores, the chelating collector can achieve simultaneous flotation of copper oxide and copper sulfide minerals. However, the limitation of chelating collectors is their lack of selectivity, and they also adsorb to …

The flotation tests were carried out on the ground mixed ore sample using a conventional Agitair LA-500 stainless steel flotation cell (1.75 L), specifically designed to avoid particle settling and entrainment (Filippov et al., 2016).For each experiment, a pulp sample of 90 g dry mixed ore sample was mixed into the cell with water at 800 rpm to …

1. Copper Flotation. As a commonly used process for copper ore beneficiation, flotation can be used for the separation of copper sulfide and oxidized copper ores. The main process of copper ore flotation is rough as follows: ore crushing and screening → stage grinding stage flotation → concentration and dehydration → copper concentrate.

As part of a study investigating the influence of mineralogical variability in a sediment hosted copper–cobalt deposit in the Democratic Republic of Congo on flotation performance, the flotation of nine sulphide ore samples was investigated through laboratory batch kinetics tests and quantitative mineral analyses. Using a range of ore …

The flotation of oxide copper ore with sodium oleate was investigated to determine the optimum pH and dosages of chemical reagents. From the mineralogical …

The oxide ore has a much higher grade than the mixed and sulphide ores but contributes less to the resource (Broughton et al., 2002). 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). Slug sulphidisation, which …

The amount of copper in copper sandstones and slates varies from 1 to 6%, in sulfide copper-nickel ores from 1.1 to 4.9%, in copper-pyrite ores from 0.1 to 3%, and in copper-porphyry ores from 0.4 to 1.2%. Up-to-date technological solutions, effective reagent flotation schemes, high-performance equipment, and integrated approaches …

This means that 95.7% of the copper present in the ore was recovered in the concentrate, while the rest was lost in the tailings. (c) The % Cu Loss can be calculated by subtracting the % Cu Recovery from : % Cu Loss = 100 – 95.7 = 4.3% This means that 4.3% of the copper present in the ore was lost in the tailings.

DOI: 10.1016/J.MINENG.2008.11.005 Corpus ID: 94500853; Flotation of mixed copper oxide and sulphide minerals with xanthate and hydroxamate collectors @article{Lee2009FlotationOM, title={Flotation of mixed copper oxide and sulphide minerals with xanthate and hydroxamate collectors}, author={K. A. Lee and Dan …

In comparison, the hydroxamate (chelating) group collector succeeded in copper oxide flotation. In the mixed ore (both copper sulphide and oxide), flotation was successfully performed using the …

Keywords: copper, flotation, optimization, mixed ore, sulphidization, modelling . Introduction. The Kansanshi mine, the largest copper mine in Africa, is 80% owned by Kansanshi Mining plc, a subsidiary of First Quantum Minerals. The remaining 20% is owned by the state through the parastatal Zambia Consolidated Copper Mines Ltd (ZCCM).

Flotation of Copper–Gold Ores. For the bulk flotation of copper minerals and gold from supergene copper ores, it is normal practice to add a xanthate as the primary collector and dithiophosphate as a secondary collector (Bulatovic, 1997). This combination gives satisfactory results in respect of copper concentrate grade and copper and gold ...

The flotation behavior of mixed copper ore during selective copper flotation was investigated using a geometallurgical approach. To this end, samples were …

Bench-scale flotation testing of a copper sulfide ore showed that ASL can effectively separate copper sulfides (85% recovery at 20% grade), GL is less effective (ca. 60% recovery and 13% grade ...

The outcome of this work has shown that desliming. improves the flot ation response of t he Kansanshi mixed copper ore. At a. rougher copper conce ntrate grade of 8%, co. pper metal recoveries ...

Many of our largest copper deposits contain both sulfide and oxidized copper minerals. The large porphyry mines, with a total copper content of from 1.3 to 2.0 per cent., send to their mills ore with an oxide content of from 0.2 to 0.4 per cent. While the recoveries of the sulfide minerals are considered satisfactory, using modern flotation ...

Copper oxide mixed ore ... "Flotation of mixed copper oxide and su lphide minerals . with xanthate and hydroxamate collectors," Minerals Engineering, v ol. 22, pp. 3 95-401, 2009. [14]

Bulk flotation experiments with Zambian copper-cobalt sulphide ore showed superior flotation performance, with improved kinetics, when using Sodium Ethyl Xanthate () as a collector instead of a blend of alkyl dithiophosphate and thionocarbamate collectors, with copper sulphides floating more rapidly than cobalt sulphides (Mainza et …

This investigation has shown that using n-octyl hydroxamates (AM28 made by Ausmelt Limited) in conjunction with traditional sulphide collectors can successfully …

It was possible to obtain a copper grade of 17.7% with more than 92% recovery in a single stage flotation from the mixed ore containing around 0.5% copper. The flotation performance using ...

Copper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of 99.99% pure copper called cathodes, which will ultimately be made into products for everyday use.The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and …

the rougher circuit while the rougher flotation recovery of mixed copper ore was 8% less than the sulfide ore. Additionally, the increase of collector and NaHS dosages along with the size reduction

At a blend of 70% sulphide ore and 30% oxide ore, the rougher scavenger copper recovery was as high as 95.5%. The copper recovery from the blended ore using a mixture of collectors was shown

The sample ore used in this study was mainly the flotation waste that has been stored for more than 30 years comprising mixed sulfide minerals and partially oxidized sulfides.

Flotation of mixed oxide sulphide copper-cobalt minerals using xanthate, dithiophosphate, thiocarbamate and blended collectors. Minerals Engineering 138 (2019) …

The flotation response of sulfide minerals in the Kansanshi mixed oxide-sulfide copper ore is superior compared to oxide minerals, for the given flotation conditions. The grade-recovery profiles and the flotation kinetics show improved results for copper sulfide minerals than oxide minerals.

A Copper Flotation Flowsheet. Because the copper in this type of ore usually assays only plus or minus 1% copper, the porphyry copper operations must be relatively large in order to be commercial. The flowsheet in this study illustrates a typical 3,000 ton per day operation. In general most operations of this type have two or more …

The rougher flotation and closed-circuit flotation tests of copper-nickel sulfide ore (1.0 kg) were performed on XFD-63 type flotation machines of different capacities (3.0 L, 1.0 L, obtained from Wuhan Exploration Machinery Co., Ltd.) [5], with mechanically stirring speed of 1610 rpm.The 3.0 L cell was used for rougher and scavenger stages, and the 1.0 L …

Experimental research on Chambishi mixed copper ore is carried out by the flow- sheet of copper oxide flota tion and copper sulfide flotation in sequence. The results show that with grinding ...

This paper studied the mineralogy and mineral processing of a copper mine bearing-silver in Sichuan province. The raw ore contained 0.77% of copper, 8.2 g/t of silver and other gangue mineral.

Oxide and/or mixed ore flotation are separated into two distinct treatments: (i) direct flotation and (ii) sulfating flotation (controlled by potential sulfidation). ... Flotation of mixed copper oxide and sulphide minerals with xanthate and hydroxamate collectors. Miner. Eng., 22 (2009), pp. 395-401, 10.1016/j.mineng.2008.11.005.

1. Introduction. Many copper sulphide mines around the world have significant copper oxide ore reserves associated with the larger primary cop-per sulphide deposit. The …