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Figure 1Conventional otation data for industrial sulphide otation circuits Lynch et al 1981 their ore unlike porphyry copper ores libA New Paradigm in Sulphide Processing By classifying otation feed at a point where coarse recovery deteriorates the existing otation circuit can be optimized to improve performance
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Sulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions but a very high extraction can be obtained if the copper ore is in the oxidized condition The problem is to convert the sulphide into the oxide form This can be done by giving the sulphide ore an oxidizingsulphatizing roast Copper sulphate is soluble in water so acid will be saved in the leaching process if4787
ca 6 copper Nussir is one of the largest deposits in Norway Nussir copper ore is comprised within a relatively simple deposit with very highgrade copper minerals and the presence of other iron sulphide impurities are negligible in the ore The latest mineral resource estimation is from July 20144113
Flotation of a copper sulphide ore from Okiep using thiol collectors and their mixtures The Journal of The South African Institute of Mining and Metallurgy VOLUME 105 NONREFEREED PAPER MARCH 2005 201 Figure 1The final cumulative copper recovery vs collector dosage obtained with C2X diC2DTP and diC2DTC in the flotation of the Okiep copper ore3797
Flotation of Nickel Copper Sulphide Ore the flotation recovery of Ni Cu and Co from a nickel copper sulphide ore The effect on flotation Effect of pH on the Recovery and Grade of Base Effect of pH on the Recovery and Grade of Base the cost of lime in sulphide minerals flotation is roughly their selective flotation from lead or copper4124
Investigation of Flotation Parameters for Copper Recovery from Keywords enargite chalcopyrite arsenic flotation copper resource 1 Introduction In the mineral industry many copper and iron sulfide ores such as covelliteget price4616
Copper recovery by LSXEX in 1968 In 1968 there were only two widely practiced copper leaching processes using dilute sulphuric acid The first process vat leaching of highgrade copper oxide ore followed by EW of copper from the leach solution produced low quality copper cathode at relatively high cost In 1968 the tonnage of high3076
May 08 2015018332Sulfideore copper mining is a risky type of mining that has never been done before in Minnesota No matter the method sulfideore copper mines proposed near the Boundary Waters would extract trace amounts of metals from large volumes of rock Rock is blasted from pit walls and sorted into metalbearing ore and waste rock4417
History of Sulphide ore flotation dates back to beginning of 20th century Sulphide ores are major sources of base metals like Copper Lead Zinc Nickel Cobalt etc Beneficiation of these base metal sulphide minerals is predominating through froth flotation technique This technology has acclaimed importance as a versatile process for3176
Metallurgical ContentSULFURIC ACID AS A SOLVENTTREATMENT OF OXIDIZED COPPER BY AGITATIONSULFUR DIOXIDE AND AMMONIA AS SOLVENTSIRON SALTS AS SOLVENTSOTHER SOLVENTS FOR OXIDIZED COPPERCONTROL OF TEMPERATURE DURING SULFATIONTHE PRECIPITANTELECTROLYSISSULFURDIOXIDE PRECIPITATIONHYDROGEN SULFIDE AS PRECIPITANTPRECIPITATION BY HEAT ALONEOTHER PRECIPITANTSMECHANICAL HANDLING OF ORE4923
the ore and collected at the base with recovery by cementation with scrap iron A more recent example is the bioleaching system for sulphide ore operated by Gunpowder Copper at their undergroundMammoth Mine in Queensland Australia in the 198090 s with recovery by SXEW Largescale well to well ISR as practised3280
A method of roasting copperironsulphide ore concentrate or mixture wherein the ratio of sulphur values to copper values is preferably at least one to yield a calcined product for the separation and recovery of copper values by acid leaching and electrolytic deposition having at least 99 percent of its copper values soluble in dilute sulphuric acid and no more than 10 percent of the iron3321
Nov 09 2018018332The rapid leach kinetics and high copper recoveries place FLSmidth ROLs process economics on par with stirredtank leaching of secondary copper sulphide concentrates The key to the high performance of the process is the use of very low energy interstage or intrastage attrition along with the activation of the mineral to enhance the3573
The oxide orebodies in which the copper is present about half as sulfide and half as oxidized minerals and where the recovery to be expected is 25 or 30 lb per ton of ore might well be treated first by the method used at New Cornelia to recover the oxide copper then reground and sent through the regular flotation operation4698
Dec 30 2019018332Sulphide ores of copper are difficult to be reduced than the oxide ores View Answer Bessemerisation is carried out for View Answer Recovery of copper from matte Bessemer converter for copper 6 min Quick summary with Stories Extraction of Copper4777
RECOVERY OF COPPER FROM OXIDE COPPER ORE BY FLOTATION AND LEACHING Kiraz Emirhan MS Department of Mining Engineering separate groups which are native copper ores sulphide copper ores and oxide copper ores Most important copper beneficiation techniques are froth flotation gravity recovery4645
an investigation of copper recovery from a sulphide oxide ore and newly discovered deposits are increasingly complex improvement of sulphideoxide copper ores processing through the use of mixed collector Figure 412 Comparison between collectorless bornite flotation and flotation with PAX Read More4200
This technology is applicable to the recovery of nickel cobalt copper and platinum group metals from furnace or converter slags emanating from copper or nickel smelters treating sulphide concentrates Pilotplant testwork at Mintek has demonstrated recoveries of 98 for nickel and over 80 for cobalt at power levels of up to 600 kW3046
May 27 2016018332Im hoping our HEPP process can either eliminate or significantly reduce the roasting step 1218 hours at 600700 degrees C which is currently required for the recovery of precious metals from sulfide laden ores If so our process consumes a fraction 4 cents per ton of the energy of roasting3390
Recovery of gold in sulfide ores has fallen into several categories First is froth flotation and second is cyanidation of the ores Using cyanide to recover gold from sulfide ores generally results in 30 to 35 recovery and the best I have heard of is around 50 recovery The fine coating of a iron compound definitely appears to be a key4378
1998 The presence of copper in the ore at above 17703 concentration may make direct cyanidation uneconomic without retreating the CuCN2 formed in leaching through processes such as SART and Hannah Iron sulfide ores and arsenic sulfide ores Iron sulfide ores and arsenic sulfide ores host different proportions3817
The Cuprex metal extraction process produces cathodegrade copper using a hydrometallurgical process based on chloride leaching of sulfide ore concentrates The process incorporates several novel steps to overcome the major problems associated with earlier chloridebased processes including mild leaching conditions using ferric chloride as leachant and solvent extraction of copper usinga4756
equilibrium recovery and the changes in recovery over time 14 There are several recent investigations that have used mineralogy as a tool for understanding the otation response of copper bearing minerals 1517 For sulphide ore from the Kamoa copper project sample mineralogy was considered3796
iv Sulphide precipitation Copper can be precipitated as a saleable sulphide This method of product recovery is least desirable because it requires both precipitation and smelting steps and a relatively lowgrade copper product is obtained Source 1 also offers the possibility of recovering cobalt and nickel using a twostep elution process4728
Get details on patent AU1979045940 RECOVERY OF ELEMENTAL SULPHUR AND METAL VALUES FROM COPPER SULPHIDE ORE CONCENTRATE OR TAILINGS by Cyprus Metallurgical Processes Corporation and more at IP in Australia4632
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