Recovery of copper from a sulfuric acid leaching solution of manganese nodules was studied by using KELEX 100, LIX 64 N and LIX 70. Extraction of each metal from sulfate solution of Cu²⁺, Ni² ...

They showed that addition of barium sulfide to a copper sulfide melt suppressed copper sulfide's electrical conductivity enough to extract a small amount of pure copper from the high-temperature …

Zinc is the third most common nonferrous metal after aluminum and copper, which has wide application in the areas of plating, coating and alloying [1–3].Currently, 80 %–85 % zinc is produced from zinc sulfide concentrates by the hydrometallurgical methods of roasting-acid leaching-purifying-electrowinning process or oxygen pressure acid …

Rao, Devi, and Reddy (2000) have studied the extraction and recovery of copper from a solution containing 0.1 M each of copper and sodium sulfate using MOC 45 as the extractant. Increase in ...

This study proposed a sulfation-roasting method and designed thermodynamic conditions to selectively facilitate the formation of copper sulfate while separating iron as oxide. The roasting ...

The effect of chloride ions on the copper extraction equilibria, the rate of extraction, copper/iron selectivity, and chloride extraction was studied for organic phases containing pure ketoxime (LIX 84-IC) and pure nonylaldoxime (LIX 860N-IC). In these systems, the used aqueous phase contained total chloride concentrations from 0 to 110 g/l.

Sulfide in the mineral is oxidised to sulfate without the generation of SO 2 or H 2 S. The best selective recovery of copper (99 at%) from chalcopyrite was obtained with a mixed DES of 20 wt% choline chloride-oxalic acid and 80 wt% choline chloride-ethylene glycol. ... Direct extraction of copper from copper sulfide minerals using deep eutectic ...

The extraction of copper from sulfate leaching liquor was investigated using Acorga M5640 commercial extractant in kerosene diluent. The effects of important factors such as the extractant ...

The McCabe–Thiele plot suggested that quantitative copper extraction is achievable in two counter-current stages (C–C) at A:O phase ratio of five, which gave 99.4% copper extraction efficiency.

Obtained experimental data were used to develop a method of copper(II) extraction from Zn-Cu sulfate solution composed of 40.9 g/L Zn(II) and 1.2 g/L Cu(II). A flowsheet was tested in laboratory-scale reactors and the conducted test confirmed the possibility to selective recover of Cu(II) over Zn(II), and the concentration of Cu(II).

Obtained experimental data were used to develop a method of copper (II) extraction from Zn-Cu sulfate solution composed of 40.9 g/L Zn (II) and 1.2 g/L Cu (II). A flowsheet was tested in ...

Copper can be extracted from non-sulfide ores by a different process involving three separate stages: Reaction of the ore (over quite a long time and on a huge scale) with a dilute acid such as dilute sulfuric acid to produce a very dilute copper(II) …

The copper smelting process produces plenty of copper slag every year, which is a hazardous solid waste, but a secondary resource. In the present study, the extraction of copper, nickel, and cobalt from copper slag was investigated through the process of sulfation roasting–water leaching and the process of sulfation …

Abstract This research investigates the extraction behavior of copper and zinc from the sulfate leachate of a porcelain stone tailings sample with Chemorex CP-150 and D2EHPA in detail. The findings demonstrated that Chemorex had greater ability and selectivity in the extraction of copper, while D2EHPA was better in the extraction of …

The extraction of copper from sulfate leaching liquor was investigated using Acorga M5640 commercial extractant in kerosene diluent. The effects of important …

The paper presents results of extraction of copper (II) from ammonia leach solutions. The effect of a type of extractant, its concentration and type of diluent in organic phase on extraction ...

Effect of equilibrium pH Extraction of copper was studied from an aqueous sulphate solution containing 0.005 M copper and 0.1 M sodium sulphate using 10% Žvrv. MOC 45 within the initial pH range of 0.9–5.85, the corresponding equilibrium pH values being in the range of 0.87– 2.79.

The resulting "pregnant" leach solution of sulfuric acid and copper sulfate is collected in a small pool. The copper compound can now be seen at concentrations of between 60-70%. The second step is solvent extraction, in which two immiscible (un-mixing) liquids are stirred and allowed to separate, causing the cooper to move from one liquid ...

The effect of pH has been studied for the extraction of copper in the pH range of 0.94–2.65 from 0.92 g/L Cu solution in sulfate medium using 5% LIX 84 diluted in kerosene.The pH of the solution has been adjusted with the addition of 1 N sodium hydroxide solution.The results presented in Fig. 1 indicate increase in copper extraction …

After two-stage counter current solvent extraction, the organic solution was further scrubbed by contacting with copper sulfate (4 g/L Cu) and sulfuric acid (15 g/L) solution. The iron extraction was reduced to a satisfactory level at an A/O ratio of 1/40 to 1/20 while the copper extraction practically did not change.

The effect of leaching time on the extraction of copper, cobalt, and iron was studied from 1 h to 5 h under the constant conditions of 25 °C temperature, 50 g/L initial H 2 SO 4, and 4:1 mL/g liquid-solid ratio [Figure 9(a)]. The extraction of cobalt and copper increased with the extension of time, whereas that of iron remained unchanged.

The solvent extraction of copper from a sulfate-chloride solution containing seawater and/or sodium chloride was studied using the commercial extractants LIX 984N and Acorga M5910. The effect of ...

Doubling efficiency. The new work doubles the efficiency for electrolytic extraction of copper reported in the first paper, which was 28 percent with an electrolyte where only barium sulfide added to the copper sulfide, to 59 percent in the second paper with both lanthanum sulfide and barium sulfide added to the copper sulfide.

In order to extract copper from the sulfate solution in continuous mode in mixer settler unit, basic studies have been made for the copper extraction at different pH, extraction isotherms, O/A ratio, etc. using 5% LIX 84 diluted in kerosene.

ABSTRACT The effect of chloride ions on the copper extraction equilibria, the rate of extraction, copper/iron selectivity, and chloride extraction was studied for organic phases containing pure ketoxime (LIX 84-IC) and pure nonylaldoxime (LIX 860N-IC). In these systems, the used aqueous phase contained total chloride concentrations …

The extraction of copper from sulfate leaching liquor was investigated using Acorga M5640 commercial extractant in kerosene diluent. The effects of important factors such as the extractant concentration, contact time, liquor pH, and temperature were examined on the separation factor Cu/Fe and the extraction efficiency of copper. The …

Recycling metals from secondary materials and more complex ores has recently been attracting more attention, creating a need for more precise separation methods of different elements. This study proposed a sulfation-roasting method and designed thermodynamic conditions to selectively facilitate the formation of copper …

The ore used for extraction is copper pyrites, which is crushed, concentrated and then heated in the presence of air. During heating the moisture gets expelled and the copper pyrites gets converted to ferrous sulfide and cuprous sulfide. ... In fact you get a brown precipitate of copper and a blue solution of copper(II) sulfate …

Direct extraction of copper from copper sulfide minerals using deep eutectic solvents. Search articles by author. Copper is predominantly recovered from sulfide ores by …

Synergistic extraction of copper(II) from sulfate medium with capric acid and tri-n-octylphosphine oxide in chloroform F. ADJEL and D. BARKAT* Department of Industrial Chemistry, Faculty of ...