sulfuric acid copper leaching
The leaching of zinc and copper from Nigerian bulk sulphide ore with sulphuric acid in the presence of hydrogen peroxide was studied The aim of the study was to investigate the effectiveness of hydrogen peroxide as an oxidant for the sulphuric acid leaching of zinc and copper from a ,
The copper sulfate solution (the pregnant leach solution) is then stripped of copper via a solvent extraction and electrowinning plant, with the barred (denuded) sulfuric acid recycled back on ,
Sulfuric acid leaching did not provide more than 76% copper extraction because the only slightly native copper that was leached (23%) For this reason, the sulfuric acid leach residue still had 030% native copper and 052% total copper
Improvements in Copper heap leaching by use of wetting agents Proceedings of EMC 2009 3 A sprinkler system is installed on top of each heap allowing the diluted sulfuric acid to be fed uni-formly over the ore While the solution percolates through the heap, copper is leached out of the ore
The Leaching of Dolomitic-Copper Ore Using Sulphuric Acid Under Controlled Conditions Felix W Ntengwe* Copperbelt University, School of Technology, Chemical Engineering Department, 4662 Jambo Drive, Riverside, Kitwe, Zambia Abstract: The leaching of dolomitic-copper ore using sulphuric acid under controlled conditions was studied with a
Oct 15, 2009· Leaching processes of metallic copper or ores containing copper in the divalent state have been the subject of many research works in recent years , , , , However, no study was found concerning the dissolution kinetics of CuO/Al 2 O 3 catalyst in inorganic or organic acid solutions
Sulfuric acid is a key element in the production of fertilizer (phosphates and ammonium sulfate) which is its primary use (approximately 65% of total consumption) Sulfuric acid is also used in the mining industry for leaching of copper, nickel, uranium and other elements from ores (approximately 15% of total consumption)
The leaching reagent (dilute sulfuric acid) is sprayed through sprinklers on top of the heap pile and allowed to trickle down through the heap, where it dissolves the copper from the ore The resulting “pregnant” leach solution of sulfuric acid and copper sulfate is collected in a small pool
Bioleaching involves the use of microorganisms to catalyze the oxidation of iron sulfides to create ferric sulfate and sulfuric ac Ferric sulfate, which is a powerful oxidizing agent, then oxidizes the copper sulfide minerals and the copper contained is then leached by the sulfuric acid formed
The smelter for sulfide ores produces sulfur dioxide gas This is scrubbed from the flue gases to make sulfuric acid for leaching copper from oxide or Scrubbing sulfur dioxide also protects the environment A by-product of the smelting and converting furnaces is sulfuric ac
This paper aims to investigate the leaching process of copper(I) sulphide by sulphuric acid solution in the presence of sodium nitrate as it has not been studied sufficiently either from the theoretical or practical point of view 2 Chemical reaction and thermodynamics
sulfuric acid copper leaching - celebrationcakin sulfuric acid copper leaching - rrcserin Heap leaching - Wikipedia, the free encyclopedia Heap Leaching Mining Techniques, Metals Mining, Copper , Sulfuric acid heap leaching of nickel The technique is an acid heap leaching process like that of the copper method in that it uses sulfuric acid .
A review of chloride assisted copper sulfide leaching by oxygenated sulfuric acid and mechanistic considerations G Senanayake* Parker Centre, Faculty of Minerals and Energy, Murdoch University, Perth, WA 6150, Australia Abstract The beneficial effect of chloride on sulfide leaching in sulfuric acid ,
This method is an acid heap leaching method like that of the copper method in that it utilises sulfuric acid instead of cyanide solution to dissolve the target minerals from crushed ore The amount of sulfuric acid required is much higher than for copper ores, as high as 1,000 kg of acid per tonne of ore, but 500 kg is more common
Many chalcopyrite leaching studies have been performed with leachants such as ferric sulfate [4–7], ferric chloride [7,8], sodium nitrate-sulfuric acid , hydrochloric acid , and sodium chloride-sulfuric acid , among others  The slow copper from chalcopyrite dissolution has been attributed to ,
Sep 02, 2016· More information about leach manganese with sulfuric ac 7 Jul 2013 which can be used for leaching Mn from all types of or how does sulfuric acid recovery of copper, stone crusher set .
The mass balance showed that 98% of copper was extracted from the chalcopyrite concentrate in 3 h under the following experimental conditions: 130 g/L of initial sulfuric acid concentration, temperature of 100 °C, oxygen pressure of 1 kg/cm2, solid concentration of 100 g/L and particle size of −105 + 75 μm
sulfuric acid copper leaching Sulphuric acid leaching of zinc and copper from Nigerian Complex sulphide ore also be catalyzed into hydroxyl radicals, copper ore leaching by sulphuric ac Contact Supplier Acid leaching of a copper ore by sulphur-oxidizing
The flowsheet discussed in this study is for treatment of 100 tons per day oxide-sulfide copper ore by the leaching process using sulfuric acid-ferric sulfate solvent This flowsheet would also be suitable for a larger tonnage by proper sizing of the various units of equipment
NRS-Import Sulfuric acid: a dangerous mining a Sulfuric acid is used to leach copper from the ground But the method comes with considerable risks for the environment because of contamination .
Sulfuric acid leaching of copper rich slag with the optimized parameters can provide a copper rich process solution with iron as the main impurity metal The solution can provide an attractive feed for integration into the industrial primary copper production with acceptable low Ni, As and Pb levels (436 g/L Cu, 94 g/L Fe, 03 g/L Ni, 01 g/L .
Extraction of Tin and Copper by Acid Leaching of PCBs Amit Chaurasia*, K K Singh, T R Mankhand Department of Metallurgical Engineering, Indian Institute of Technology, (BHU), Varanasi, 221005, India Abstract Printed circuit board (PCB) waste is generally dumped as a landfilling or treated pyrometallurgically, which
Leaching Oxide Ores with Sulfuric Acid The flowchart above shows how the smelting process of sulfide ores produces sulphur dioxide, which is converted to sulfuric ac
Leaching and recovery processes for zinc and copper from brass slag by sulfuric acid were carried out and iron and aluminum were also precipitated as hydroxides in addition to silica gel The factors affecting the performance and efficiency of the leaching processsuch as agitation rate, leaching time, acid concentration and temperature were .
leaching causes an increase in extraction of copper In recent years, various solvents such as chlorate , ferric chloride , hydrochloric acid , hydrogen peroxide , and sulfuric acid  have been used for leaching of copper from slags Sulfuric acid leaching is the most conventional method for extraction of copper because of its
or vat operations, sulphuric acid is commonly used to leach copper from oxide minerals such as malachite (CuCO 3Cu(OH) 2), azurite (2CuCO 3Cu(OH) 2) and chrysocolla (CuOSiO 22H 2 O) Sulphuric acid was also used to easily leach copper from a roasted Cu-Pb matte  Such a leaching scheme however needs to
The leaching reagent (dilute sulfuric acid) is sprayed through sprinklers on top of the heap pile and allowed to trickle down through the heap, where it dissolves the copper from the ore The resulting solution of sulfuric acid and copper sulfate is collected in a small pool Copper concentration is around 65% Next step is solvent extraction
Rate of solder dissolution with time for different acid concentrations was studied Sulfuric acid was found unable to leach the solder at low concentrations, so further study was discarded Perchloric acid was also found ineffective Nitric acid, a strong oxidizing agent has selective dissolution properties for copper, tin and lead
Sulfuric acid has many industrial purposes and is produced in greater quantities than any other chemical worldwide In metal mining, sulfuric acid is used to leach copper oxide minerals In one process, a solution of sulfuric acid laden with copper sulfate is stripped of copper via a solvent extraction and electro winning with the used sulfuric .
Copper does not react with dilute sulphuric acid as its reduction potential is higher than that of hydrogen Copper does not displace hydrogen from non-oxidising acids like HCl or dilute H2SO4 But, concentrated sulphuric acid is an oxidising agen.
You can also get contact with us through online consulting, demand table submission, e-mails and telephones.CALL TO ACTION