sulphidation of copper oxide ore for flotation
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 as a vulcanizing agent and butyl xanthate as a collector.
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 …
2019-11-22 · Where oxide and sulphide cobalt-bearing copper minerals occur together, efficient recovery of copper and cobalt is known to be extremely difficult. This study investigates the flotation behaviour of a mixed oxide-sulphide ore where copper is hosted in sulphides phases such as bornite, chalcopyrite and chalcocite, and oxide phases such as ...
2020-11-9 · 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 ...
2017-3-1 · The mixed ore contains oxide, supergene oxide and hypogene sulphide copper species respectively with the greater part of the deposit being made up of sulphide and mixed ores. The oxide ore has a much higher grade than the mixed and sulphide ores but contributes less to the resource (Broughton et al., 2002).
2016-4-13 · Flowsheet for treatment of Copper Sulfide ores rich in minerals such as chalcopyrite with gold and silver as well as arsenopyrite The above flowsheet is designed for the treatment by flotation of copper as chalcopyrite with gold and silver values. The ore, ranging from 60-65% silica, with pyrite, arsenopyrite, …
US1483270A US144116A US14411617A US1483270A US 1483270 A US1483270 A US 1483270A US 144116 A US144116 A US 144116A US 14411617 A US14411617 A US 14411617A US 1483270 A US1483270 A US 1483270A Authority US United States Prior art keywords flotation sulfide air solution ores Prior art date 1917-01-24 Legal status (The legal status is an assumption and is not a legal …
2017-5-18 · Sulfidation xanthate flotation is the most widely used method for dealing with copper oxide ore 9, 12, 13. Sodium sulfide can promote the flotability of oxide copper ore 14, resulting in the ...
2017-12-17 · The recovery of copper by sulphidisation and flotation from a mixed ore has been studied in detail in this thesis. Particular focus was given to the effect of pulp chemistry on the sulphidisation mechanism and subsequent flotation response of oxidised sulphide minerals, both of which are not prevalent in the literature.
2013-12-1 · The sulphidation of a nickeliferous lateritic ore was studied at temperatures between 450 and 1100 °C and for sulphur additions of 25–1000 kg of sulphur per tonne of ore. The experiments demonstrated that the nickel could be selectively sulphidized to form a nickel–iron sulphide. It was found that both the grade and the sulphidation degree ...
2014-12-24 · The aim of this study was the recovery of copper from the oxide copper ore by froth flotation and agitating sulphuric acid (H 2 SO 4) leaching. The ore with 4.21% copper grade used in this study was obtained from Çorum-Dangaz region of Turkey. Native copper, cuprite (Cu 2 O), tenorite (CuO), and malachite (Cu 2 (OH) 2 /CO 3) were the
2020-4-1 · flotation, obtaining conditional copper and zinc concentrates. Despite several of studies that have been done related to this issue, effective selective flotation of tennantite ores is still the subject to investigation. 4.2. Effect of particle size distribution on copper recovery Chalcopyrite and tennantite ore samples were received from
2015-4-10 · Ore Concentration by Froth Flotation. Remember that only 0.67% of the ore is copper. The copper minerals and waste rock are separated at the mill using froth flotation. The copper ore slurry from the grinding mills is mixed with milk of lime …
2020-2-3 · The experiments demonstrated that the nickel oxide within the ore can be selectively sulphidized to a nickel-iron sulphide. It was found that both the grade and the sulphidation degree largely depended upon the temperature and the sulphur additions, with temperatures above 550oC exhibiting the highest nickel sulphidation extents and grades.
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.
Sulphidization of copper oxide ore benefit in floatation Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Sulphidization of copper oxide ore …
2019-9-29 · For instance, the fine-grained copper oxide ore is poorly floatable and displays a lower recovery during the flotation process [7]. Up to now, sulfide flotation is still one of the most widely used processes in copper oxide ore dressing, but it is unable to solve the problem of low recovery of micro-fine oxidized copper ores [8,9 ...
2016-3-2 · copper oxide minerals, to form a sulphide layer on the surface of the mineral particles (Zhou Development and optimization of mixed sulphide/oxide copper ore treatment at Kansanshi by F.X. Paquot* and C. Ngulube* The Kansanshi Mine (First Quantum Minerals Ltd) treats a mixed sulphide/oxide copper-gold vein deposit. Until June 2009, the sulphide and
2016-7-19 · flotation of copper oxide or mixed ores is sulphidization, which was first developed with industrial success on Pb–Zn oxide ores in Review, evolution, and optimization of the treatment of Kansanshi mixed copper ore by C. Ngulube*, C. Chongo*, and F.X. Paquot* .2&,3, Over the last six years, the Kansanshi copper-gold mine has continued to
2019-1-21 · an excellent collector for flotation of fine malachite, finally to achieve the concentrates containing 20% Cu and 88% Cu recovery. Keywords: fine malachite, collector, sulfuration flotation, contact angle, mean size, flocculation 1. Introduction Recovering of copper oxide minerals still is a technical challenge around the world, since most of oxide
2017-5-25 · A combined process of flotation and high-gradient magnetic separation was proposed to utilize Yulong complex copper oxide ore. The effects of particle size, activators, Na 2 S dosage, LA (a mixture of ammonium sulfate and ethylenediamine) dosage, activating time, collectors, COC (a combination collector of modified hydroxyl oxime acid and xanthate) dosage, and magnetic intensity on the copper ...
2009-3-1 · Flotation response for copper oxide composite using AM28 as the copper collector. Total AM28 and MIBC doses for both Tests A and B were 1200 g/t and 50 g/t, respectively. Download : Download full-size image; Fig. 5. Copper grade–recovery relationship from the rougher scavenger flotation test for the copper oxide composite.
2010-1-19 · improvement of sulphide-oxide copper ores processing through the use of mixed collector systems has surged. The flotation of a natural porphyry copper ore with bornite and malachite was investigated via fundamental work with pure minerals and a bench-scale testing regime. The
Copper oxide ore is used to refine copper oxide. Copper oxide ore is produced in the Philippines, Pakistan and other regions. The monthly supply is about 1,000 tons to 2,000 tons. Copper oxide (CuO) is a black oxide of copper. The most common on the market today is 98% copper oxide and 99.95% copper oxide. The … Direct Flotation Of Copper Oxide Ore Read More »
2013-7-25 · Sulfidization-flotation has been practiced in the industry, often with some degree of success, depending on the mineralogy of the oxide minerals in the ore. Such is not the case with alkyl hydroxamates. Studies on actual ore …
2013-12-24 · In this study, the flotation of oxidized copper ore obtained from Ergani CopperMining Company in Turkey was performed. This ore contains 2.03% copper, 0.15%cobalt and 3.73% sulfur. An effective processing method has not been found to recovercopper and cobalt from this ore, which has been stockpiled for 40-45 years in the idledplant. It was established that recovery of copper and cobalt from this ore withhydrometallurgical treatment is not economical, so using flotation to increase theconcentration of copper and cobalt was chosen. When flotation of the oxidized copperore was performed under standard operating conditions in the plant, good results werenot obtained. Because of this, the flotation of samples obtained from sulfurized mediumcontaining different ratios of H2S+ H2O gases was done under the same conditions.Following flotation, it was seen that copper, cobalt and sulfur present in the mediumwere concentrated. In this solution, concentration of copper …
This study was carried out to develop a flotation procedure for an oxide copper ore from a Region in Central Africa for producing an 18% copper concentrate for downstream processing at maximum recovery from a 4% copper feed grade. The copper recoveries achieved from the test work were less than 50% despite changes in reagent conditions (multistage sulphidisation, use of RCA emulsion and ...
2016-6-8 · Copper Cobalt Africa, incorporating the 8th Southern African Base Metals Conference Livingstone, Zambia, 6–8 July 2015 Southern African Institute of Mining and Metallurgy 69 Review, Evolution and Optimization of the Kansanshi Mixed Copper Ore Treatment C. Ngulube,* C. Chongo and F. …
2019-1-1 · The micro-flotation results show that combined use of NaBX+DDA yields better effect than using NaBX at pH 7-11 only, and the optimal molar ratio of NaBX to DDA is 2: 1. The actual ores flotation shows that when the dosage of NaBX+DDA is (100+54) g/t, the copper concentrate grade and recovery are 15.93% and 76.73%, respectively.
The recovery of these copper minerals by flotation or hydrometallurgy from ores, typically containing 0.5%TCu (open pit mines) and 1-2%TCu (underground mines) is of great commercial importance ...
This paper presents the sulfidisation promotion effect of ammonium sulfate on the sulfidisation flotation of both malachite and copper oxide ores. Copper oxide ores are commonly difficult-to-float due to its molecular structure, and adding sodium sulfide as activator is necessary; however, its dosage to the flotation pulp must be strictly controlled, as it is also a powerful depressant for ...
The recovery of oxide copper minerals from a complex ...
2015-11-26 · 453 Acid leaching of oxide–sulfide copper ore prior the flotation – A way for an increased metal recovery Miroslav D. Sokić1, Vladan D. Milošević1, Velizar D. Stanković2, Vladislav Lj.Matković1, Branislav R. Marković1 1Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, Serbia 2University of Belgrade, Technical Faculty, Bor, Serbia
2017-5-25 · Copper Recovery from Yulong Complex Copper Oxide Ore by Flotation and Magnetic JOM ( IF 2.471) Pub Date : 2017-05-25, DOI: 10.1007/s11837-017-2383-x Junwei Han, Jun Xiao, Wenqing Qin, Daixiong Chen, Wei Liu
2019-8-7 · ditions. The minimum copper feed grade for the mixed copper ore was 0.5% Total Copper (TCu). The outcome of this work has shown that desliming improves the flotation response of the Kansanshi mixed copper ore. At a rougher copper concentrate grade of 8%, copper metal recoveries obtained with desliming were in excess of 70% compared to 58% ...
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 test, a copper concentrate with 18.34% of Cu grade ...
About the author. Qicheng Feng is a lecturer at Kunming University of Science and Technology, China. He received his PhD from Kunming University of Science and Technology in 2016 and conducts research on the sulfidization flotation of copper, lead and zinc oxide minerals, and mineral interface evolution of unavoidable components in pulp solutions.
In the copper oxide flotation, direct flotation method usually can not achieve better results. Sulfuration flotation method is the main flotation method for treating copper oxide ore and mixed ore at home and abroad. For malachite, azurite, and red copper. Mine-based copper oxide ore can get better indicators. The method used to treat the mixed ore is … Vulcanization Flotation Of Copper ...
2017-2-4 · Floatability of the Oxide Copper Cobalt Ore Sample The effect of the mixture gazoil-rinkalore RX (150, 250, 300 and 400 g/t) was investigated in order to optimise the floatability of an oxide copper cobalt ore sample. The total doses of the other flotation reagents were kept constant at 300 g/t for Na2SiO3, 4000 g/t for NaSH, 400 g/t for KAX and 80