قائمة الطعام
In this study, a novel method to recover copper from Yulong complex copper oxide ore was devel-oped by flotation and high-gradient magnetic sepa-ration. In the flotation process, a novel modifier LA that is a mixture of ammonium sulfate and ethylenediamine was introduced to promote the sulfidation of copper oxide with Na2S, …
Abstract and Figures. Sulphidising flotation of oxide copper–cobalt ores with sodium hydrosulphide used as sulphidising agent is common practice in Katanga, Democratic Republic of Congo.From ...
Copper oxide ore has a complex composition, and a low recovery rate is often achieved via the traditional sorting method. A new combined process of flotation–high-gradient magnetic separation–leaching is proposed here to recover copper minerals. The test results showed that the flotation process was successful when using sodium sulfide …
Copper-containing rock, or copper ore, holds only a small percentage of copper. Most of the rock is unwanted material, typically referred to as gangue. There are two main types of copper ore of interest: copper oxide ores and copper sulfide ores. Both ore types can be economically mined, but they are processed in different ways.
The copper ore was copper oxide ore, and metal copper particles appeared in a small amount of the slag. Most of the slags unearthed from the site of the Yubeidi site were products of sulfur-containing oxide reduction and smelting into copper. Based on the outcomes of the simulations, it was established that the slag excavated from the Yubeidi ...
74.08% Cu was recovered by flotation, while the average grade of the copper. concentrates was 21.68%. Another 17.34% Cu was furthe r recovered from the. flotation tailing by magnetic separation ...
The mixed oxide-sulfide copper‑nickel ore used in this study was provided by Jinchuan Group Ltd. (JNMC), China. The ore powders obtained by grinding the crushed ore in a ball mill at 100 r/min for 15 min were sieved into six narrow size ranges: 75–80 μm, 80–96 μm, 96–109 μm, 109–120 μm, 120–150 μm and 150–180 μm, and the main …
Oxide ores such as hematite (Fe2O3), cuprite (Cu2O), and bauxite (Al2O3) can be processed through leaching, where the ore is treated with chemicals that dissolve the desired metals; the resultant solution is then treated to precipitate the metal from the liquid. This process is typically less expensive than the processing required for sulphide ...
Continuing with the evaluation of copper oxide flotation using hydroxamate we now evaluate a rock that's 41% copper oxide with some lead oxide included. Sample B: 1.8% Copper about 41% Oxide Cu. Unseen in these charts is the order in which the results were obtained. The last/best "Blue" dot (the best data point) was the last test of …
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.
A New Technique for Recovering Copper from Complex Copper Oxide Ore by Flotation and Metallurgical Processing. JOM, 71 (2), 784-790. Go To JOM. developed a new method for copper recovery based on …
PDF | The chemical binder is one of the critical factors affecting ore agglomeration behavior and leaching efficiency. In this study, we investigated... | Find, …
Characterization of the Copper-Cobalt Oxide ore The mineral phases found in the copper-cobalt oxide sample as received are represented by the X-ray diffraction (XRD) pattern in Figure 1. Malachite (Cu2CO3(OH)2) was the most common copper oxide found. Some peaks of pseudomalachite (Cu5(PO4)2(OH)4), a copper phosphate-hydroxide phase, …
oxide ores (−0.075+0 mm) were uniformly mixed with the binders. To promote bonding reactions and agglomeration strength, the agglomerates were placed in a stable environ-
The kinetic behavior of leaching copper from low grade copper oxide ore was investigated. The effects of leaching temperature, H2SO4 concentration, particle size of crude ore and agitation rate on the leaching efficiency of copper were also evaluated. And the kinetic equations of the leaching process were obtained. The results show that the …
The objective of this study was to investigate the floatability of a complex Kansanshi mixed copper ore comprising sulphide and oxide minerals with a view to …
@article{Wang2019EffectOT, title={Effect of temperature on leaching behavior of copper minerals with different occurrence states in complex copper oxide ores}, author={Gai-rong Wang and Yuan-yuan Liu and Lin-lin Tong and Zhe-nan Jin and Chen Guobao and Hong-ying Yang}, journal={Transactions of Nonferrous Metals Society of …
In this study, weak acid in the curing and leaching stages of copper ore was incorporated, and we analyzed its effect on the dissolution of copper and final impurities. The weak acid corresponds to a wastewater effluent …
Copper oxide ore has the following characteristics: 1The structure is more complicated, the particle size of the impregnation is finer, it is not easy to dissociate, it is generally brittle, and it is easy to be muddy during fine grinding; 2The mineral composition is very complicated, and the same mineral deposit contains many kinds of oxidized …
The process requires the use of hydrochloric acid as leaching solution when treating copper ores, which may be produced in the plant itself. The operation is very simple, using sulphuric acid and NaCl as raw materials. Our experiences have been done with solutions containing 36 grs. of hydrochloric acid per liter of solution in order to have …
The efficiency of reductive leaching of oxidised copper-cobalt ore with sulphuric acid is highly dependent on pH (≈1.5). The pH can be maintained by the addition of make-up acid. ... of high-gradient magnetic separation–secondary grinding–leaching to improve the copper recovery from refractory copper oxide ores. Minerals Engineering ...
The floatability of oxide copper from mixed ore is usually better than the floatability of copper from oxide ores. An appreciable amount of the cobalt in these ores is represented by sulphide cobalt minerals, mainly carrolite. Table 19.12. Plant results from mixed copper sulphide oxide ores.
A. V. Orlova & V. A. Taranov. 579 Accesses. 2 Citations. Explore all metrics. Abstract. An analysis of flowsheets for processing sulfide and oxide copper ores, …
COPPER OXIDE ORES D Liu1, J Fang2, S Wen 3, W Zhang 4, Y Chen 5, X Zhang6, L Sun7 and X Zhou8 ABSTRACT This paper presents the sulfi disation promotion effect of ammonium sulfate in the sulfi disation fl otation of both malacihte and copper oxide ores. Copper oxide ores are commonly dif fi cult-to-fl oat
T he copper mining industry is reaching a turning point. Surface oxide deposits are depleting and copper miners are turning their attention to untapped sulfide ores found deeper underground. However, …
Characteristics and beneficiability of different copper oxide ores. According to the different copper oxide minerals contained in the ores, copper oxide ores can be divided into seven types, and the …
Abstract In the present work, the leaching behavior of copper from an oxide/sulfide ore was assessed in two work phases including process optimization and kinetics modeling. In the first phase, the individual and synergistic impacts of the influential parameters such as sulfuric acid concentration, liquid/solid ratio, pulp mixing rate, temperature, and contact …
The supergene mineralization overprinted the primary hypogene stage leading to a major increase of the Cu and Co ore grades from a few percent to up to 25% (El Desouky et al., 2010).The primary Co-Cu-sulfide minerals were broken down by meteoric fluids, which remobilized the metals and redistributed them close to the surface, …
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 rougher bulk concentrate contains 4% copper with 75% recovery. After recleaning, the final copper con-centrate produced contains at least 20% copper with 85% recovery. The plant within the Tominskii MPE produces 28 million t of porphyry copper ore per year, where the initial content of copper in the ores is 0.4%.
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