The copper oxide ore in Dali, which contains 0.69% of copper and 11.24g/t of silver, was beneficiated by sulphidizing - xanthate flotation method. The flotation tests were carried out systematically with sodium sulfide as sulphidizing agent and butyl xanthate + ammonium dibutyl dithiophosphate as the combined collectors. Through closed-circuit …

The flotation by surface sulphidisation of the oxidized copper-cobalt-bearing ore from Kimpe (1.97% Cu; 0.66% Co) was studied in order to evaluate its behavior by the analysis of its most ...

Various collectors and combinations of them were used in the rough flotation tests of copper ore. The copper recovery was in the range from 79.43% (test no. 4) to 84.96% (test no. 7).

A complex copper-lead-zinc sulfide ore from a mine in the Iberian belt was used in the flotation tests. The chemical composition of the ore was given in Table 1 . …

Only the flotation process mentioned above could make this practicable; and even so, it requires large companies with huge plants, continuous working and immense capital. This explains why, in order to smelt 4 million tons of new copper in 1963, nearly 400 million tons of ore had to be handled and treated in various ways. Flotation depends on ...

In this study, the flotation of oxidized copper ore obtained from Ergani Copper Mining Company in Turkey was performed. This ore contains 2.03% copper, 0.15% cobalt and 3.73% sulfur.

For instance for a chalcocite copper ore the maximum theoretical content is 79.9% because theoretical Cu content in Cu 2 S is 79.9%. In many cases, the separation line starts at another point on the grade axis. ... The results of flotation of different copper ores plotted as the grade-recovery curves with indicated characteristic points such as ...

Flotation may be the most important separation process used in the minerals industry. Its objective is to produce a salable concentrate from a mined ore with desired …

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 …

It can be seen from the above two Tables that the oxidation ratio of the ore sample is 61.39% with a combination ratio of 16.74 %, thus to some extent indicates the sample is a relative dif fi cult to fl oat copper oxide ore. Flotation reagents Sodium Sulfi de, Na2S· 9H2O, as an activator, molecular weight 240.18g, AR quality, produced by

The flotation concentrate is then dewatered and filtered to produce a filter cake that is sent to a copper smelter. Copper processing - Ores, Refining, Smelting: Principal forms in which copper ores are found include native copper, porphyry copper, massive deposits, and mixed ores. Native copper is simply the metal found unadulterated in nature.

Few of them knew organic chemistry. Those in charge of flotation rarely had flotation laboratories. Flotation research was done by 'cut and try' and empirical methods. The mining industry had no well …

The copper ore sample was obtained from Northparkes Copper & Gold Mine, Australia. This ore was chosen due to its relatively unproblematic flotation characteristics. Such an ore provides a formidable baseline for the identification of the deleterious effects of clays. The chemical assays of the ore sample contains 0.5% Cu, …

A complex copper-lead-zinc sulfide ore from a mine in the Iberian belt was used in the flotation tests. The chemical composition of the ore was given in Table 1 . The ore is a massive sulfide ore with approx. 75% pyrite, 0.8% chalcopyrite, 1.2% galena, 9% sphalerite and trace amounts of secondary copper minerals and arsenopyrite.

Numerous flotation models have been proposed in the literature. Thirteen of these have been applied to batch flotation data and evaluated with respect to one another using statistical techniques.Flotation tests were carried out on samples of a US porphyry copper ore (Pinto Valley, AZ). The ore was tested using various collector and frother systems to …

Preferential flotation of copper sulfide ore beneficaition For the disseminated copper-sulfur ore, the preferential flotation process is adopted, and the sulphur in the tailings must be re-floated. To reduce the consumption of sulfuric acid during the floatation and ensure safe operation, the process condition of low alkalinity should be ...

The bench-scale flotation results show that using acidified water glass in conjunction with locust bean gum is suitable in the flotation of a refractory copper sulfide ore that contains multiple MgO gangue minerals, and a copper concentrate with grade of 20.25% and recovery of 75.8% is achieved when the feed ore copper grade is 0.16%.

The rougher flotation behavior of a sulfidized copper ore was studied by a series of batch flotation experiments. Response surface modeling based on central composite design was applied to optimize and evaluate the effects of collector, depressant and frother dosages, solution pH and agitation rate on the copper recovery. ...

The copper oxide ore of the Yangla Mine in Yunnan, China, with 1.02% copper was subjected to flotation with a mixture of potassium amyl xanthate (PAX) and hydroxamate AM28 as the collector. A rougher concentrate was reported with a 3.19% Cu grade and 38.4% recovery [ 112 ].

The total copper recovered from its ore through flotation process is about 56% [6, 18], which indicates that the flotation tailings still contain valuable copper components such as chalcopyrite. In addition, old flotation tailings sometimes have a higher copper grade (0.2–0.4%) than that of low‒grade ores (0.2‒0.3%).

Problem: A copper ore initially contains 2.09% Cu. After carrying out a froth flotation separation, the products are as shown in Table 1. Using this data, calculate: (a) Ratio of …

The process water used for the flotation of sedimentary copper ore in ore concentration plants in KGHM Polska Miedz S.A. were characterized. The process water used in the flotation circuits is ...

Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, and associated gangue minerals are separated as tailings. However, a significant amount of copper is lost into tailings during the processing; therefore, tailings can be considered …

For instance, the flotation process is performed with water containing 25–35% wt solid ratio and is consumed 1.9–3 m 3 water per ton of ore processed (Gunson et al., 2012; Li et al., 2019). However, the tailing slurry containing roughly 40–60% solids is discharged as a result of the process (Bleiwas, 2012 ).

Many copper flotation plants around the world, and particularly those in the Americas, have enough gold in the ore to ensure that special attention is given to maximize the recovery of gold into the copper concentrate. ... Jones et al., 1986) has been successfully applied at a number of copper–gold ore flotation plants in Australia ...

A 30-hp. motor furnished power for all the air necessary for both mixing and separating, and the oil consumption averaged as low as 0.13 lb. of refined pine-oil per ton of ore. It was an ideal floating ore. Since then the Callow scheme has been adopted by nearly all the other mills in the Coeur d'Alene for the treatment of their lead- zinc ...

The FTIR (DRIFT) and FT-Raman studies of the products of copper–nickel ore flotation have recorded the presence of goethite, iron sulphates and sulphur element on the surface of mineral grains. It is a characteristic that the elemental suphur peaks' intensity decreased in the spectra on transition from the concentrate of between-bath to …

Flotation is widely used to concentrate copper, lead, and zinc minerals, which commonly accompany one another in their ores. Many …

Ores excavated from these deposits are typically processed by flotation—a separation technique based on the difference in surface wettabilities of minerals—to recover copper sulfides (mostly chalcopyrite …