The acid consumptions curves for the oxide copper ore (number 3) with a high iron oxide-tactile gangue were somewhat different than those of oxide copper-porphery gangue ore number 1 In tests 9 through 14 the incremental acid curves were generally low at the start, fairly high after 3 to 4 days of leaching, and very high thereafter
Leaching of copper oxide with different acid solutions ,
Oct 15, 2009· Copper oxide can also be dissolved by a weak acid such as citric acid: (5) 3CuO + 2C 6 H 8 O 7 → Cu 3 (C 6 H 5 O 7) 2 + 3H 2 O This article presents the results on copper and alumina separation from CuO/Al 2 O 3 catalyst treated in fresh form with HCl, HNO 3, H 2 SO 4 and citric acid solutions The effects of acid concentration, stirring .
Oxide or Oxidised copper ore bodies may be treated via several processes, with hydrometallurgical processes used to treat oxide ores dominated by copper carbonate minerals such as azurite and malachite, and other soluble minerals such as silicates like ,
Current copper deposits contain significant amounts of secondary non-sulphide minerals and newly discovered deposits are increasingly complex As a result, research into the improvement of sulphide-oxide copper ores processing through the use of mixed collector systems has surged
This is scrubbed from the flue gases to make sulfuric acid for leaching copper from oxide or Scrubbing sulfur dioxide also protects the environment For example: FeO(s) + SiO 2 (s)→ FeOSiO 2 (slag) This is very similar to the removal of impurities in the blast furnace The liquid left is a mixture of copper sulfides and iron sulfid
Download determination of copper concentration reaction file, open it with the free trial version of the stoichiometry calculator Click n=CV button above S 2 O 3 2-in the input frame, enter volume and concentration of the titrant used Click Use button Read number of moles and mass of copper in the titrated sample in the output frame
Copper Mining and Processing: Processing of Copper Ores ,
The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and pyrometallurgy, respectively, due to the different chemistries of the ore Copper oxides are more abundant near the surface, but are considered low-grade ore, with a lower concentration of copper
of such mixed ores by the existing concentration technologies leads to a substantial copper losses (60%) Reduction of "oxide copper", by acid leaching prior the flotation concentra- tion, can increase the overall copper efficiency up to more than 70% in the single-stage leaching, achieving an efficiency in the flotation concentration stage .
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) sulfate solution Concentration of the copper(II) sulfate solution by solvent extraction
CONCENTRATION OF OXIDE COPPER ORES BY FLOTATION SEPARATION ,
Sep 10, 1974· Oxide copper ores in subdivided form may be concentrated in a flotation separation process by slurrying said ores in an aqueous solution of a flotation reagent followed by generating gas bubbles in the slurry to float the oxide copper and recovering the concentrated oxide copper from the surface of the slurry, wherein the floatation reagent is ##SPC1## Ii condensation reaction products of ,
How copper is made - material, used, processing, steps ,
Others are known as oxide ores, carbonate ores, or mixed ores depending on the chemicals present Many copper ores also contain significant quantities of gold, silver, nickel, and other valuable metals, as well as large quantities of commercially useless material Most of the copper ores mined in the United States contain only about 12-16% .
What makes a World Class Copper Deposit? | Copper Investing News Iron oxide copper gold ore deposits (IOCG) are highly valuable concentrations of copper, gold and uranium orCopper Skarn deposits, in the broad sense, are , »More detailed
A comprehensive study of the leaching behavior and ,
the dissolution rate of copper increases with increasing L/S ratio to a certain amount and, then, reduces with a further increment; moreover, a Liquid/Solid (L/S) Figure 2 E ect of liquid-to-solid (L/S) ratio on the dissolution of copper oxide ore Figure 3 E ect of sulphuric acid concentration on the dissolution of copper oxide ore
The important ores of copper are copper pyrites (\(CuFeS_2\)), cuprite and copper glance The copper ores are mostly found in the north of India The extraction of copper also involves many steps The ore used for extraction is copper pyrites, which is crushed, concentrated and then heated in ,
US3834533A - Concentration of oxide copper ores by ,
Oxide copper ores in subdivided form may be concentrated in a flotation separation process by slurrying said ores in an aqueous solution of a flotation reagent followed by generating gas bubbles in the slurry to float the oxide copper and recovering the concentrated oxide copper from the surface of the slurry, wherein the floatation reagent is II condensation reaction products of A polybasic .
US3845862A - Concentration of oxide copper ores by ,
Oxide copper ores in subdivided form may be concentrated in a flotation separation process by slurrying said ores in an aqueous solution of a flotation reagent followed by generating gas bubbles in the slurry to float the oxide copper and recovering the concentrated oxide copper from the surface of the slurry, wherein the flotation reagent is a quaternary hydrocarbyl ammonium or phosphonium .
Open Access The Leaching of Dolomitic-Copper Ore Using ,
Abstract: The leaching of dolomitic-copper ore using sulphuric acid under controlled conditions was studied with a view to evaluating the economic value and the effect of ore pulverisation, particle size, temperature and pH on the recovery of copper from chalcopyrite The samples were ground and mixed with water and sulphuric acid to form an acid
concentration of copper oxide ores - super-cleanbe
Flotation of Oxide Copper and Copper Cobalt Ores , The process of flotation of oxide copper and copper cobalt ores involves two , Oxide copper or , was dependent on flotation pH and collector concentration.
ore concentration occurs when as much of the useless rocky material as possible is separated bauxite aluminium ore can soak in sodium hydroxide solution a chemical reaction leaves aluminium oxide this process can be used for copper as well in some copper ores the rock can be converted into a copper sulphate solution after soaking in a diluted .
Apr 23, 2011· Copper Ore Types: Sulfides versus Oxid April 23, , copper oxide ores and copper sulfide or , The method used to separate copper in copper sulfide ores depends on the concentration of the .
Ammonia/nitric Acid Leaching of Copper- Cobalt Oxidized Ore
(time, ammonia concentration, and pH) on the recovery of Cu, during nitric acid/ammonia leaching of copper- cobalt oxidised ore II EXPERIMENTAL A Materials Copper ores present in the southern Democratic Republic of Congo, are usually associated with cobalt and nickel ore Sulfur ores as well as oxidized ores of copper and cobalt are
Ammoniacal thiosulfate leaching of refractory oxide gold ore
Jul 10, 2017· Ammoniacal thiosulfate leaching of refractory oxide gold ore was investigated According to X-ray fluorescence and fire assay analyses, the ore contained about 3301 wt% Si, 853 wt% Al, 726 wt% K, 300 wt% Fe, and 280 ppm Au
The modeling of the leaching of copper oxide ores has not received as much attention as sulfide heap leaching The acid leaching of copper oxide ores generates a vertical acid concentration gradient in the ore heap, which is not generally observed in sulfide deposits
* Sample taken from an edge at the open pit Cerovo reach with oxide copper minerals Low average copper content and increased participation of oxide copper minerals in these ore bodies, leads to serious technological problems in mineral processing plant, namely to reduction of copper in the flotation concentration (about 60 % on average)
Home >EXTRACTING >Copper Oxide Ore EXTRACTING Copper Sulfide Ore About 80% of the world’s copper-from-ore originates in Cu-Fe-S ores, such as chalcopyrite (CuFeS2) and chalcocite (Cu2S) The concentration of these minerals in an ore body is low Typical copper ores contain from 05% Cu (open pit mines) to 1 or 2% Cu (underground mines) .