Sulfuric acid leaching for capturing value from copper

2019-4-1  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 (43.6 g/L Cu, 9.4 g/L Fe, 0.3 g/L Ni, 0.1 g/L As, 0.2 g/L Zn, 0.01 g/L Pb).

Leaching of iron from copper tailings by sulfuric acid

Based on eqn (6)– (9), the theoretical consumption of sulfuric acid for the leaching of CaO, CuO, and Fe2SiO4 from the copper tailings is about 0.53 mol L−1 at a S/L ratio of 1:10. Thus, the effect of the sulfuric acid concentration was investigated in the range of 0.31–0.64 mol L−1.

Leaching of iron from copper tailings by sulfuric acid

In this study, the kinetics and mechanism of the leaching of iron from copper tailings using sulfuric acid were studied. Under optimal conditions (40 °C, sulfuric acid concentration of 0.53 mol L −1,stirring speed of 400 rpm, solid/liquid ratio of 1 : 10 and leaching time of 120 min), 66.45% of Fe, along with 65.32% of Zn and 59.95% of Cu, were leached from the tailings.

Intensification of Sulfuric Acid Leaching of Copper

2020-3-29  It has been established that the use of Fe(III) ions and ozone can significantly intensify the recovery of copper from sulfides in sulfuric acid solutions. The extraction of copper from sulfides increases in proportion to the 2.4-fold increase in the concentration of Fe(III) from 7.8 to 29.25 g/L. Ozone effectively oxidizes Fe(II) and regenerates the oxidizing agent, Fe(III) ions.

A STUDY OF LEACHING OF COPPER OXIDE ORE BY

2013-10-27  sulphuric acid solution was used and 5 g of the ground copper oxide ore with a solid to liquid. ratio of 13%. Leaching parameters such as leaching time from

Leaching of copper(I) sulphide by sulphuric acid

Normally, sulfuric acid is widely used as a leaching reagent during the leaching process, due to the fact that copper oxide minerals are dissoluble in sulfuric acid solution at room temperature.

Leaching Sulfides by Sulphuric Acid: Copper

2017-1-22  It consisted in matting the sulphides, grinding, roasting, grinding again, and dissolving the copper out in diluted sulphuric acid, then melting the silver and crystallizing the bluestone. It did not yield fine bullion, hence the bullion had to be refined as well

sulfuric acid copper leaching bostonenglish.pl

Leaching of iron from copper tailings by sulfuric acid In this study, the kinetics and mechanism of the leaching of iron from copper tailings using sulfuric acid were studied. Under optimal conditions (40 °C, sulfuric acid concentration of 0.53 mol L −1,stirring speed of 400 rpm, solid/liquid ratio of 1 : 10 and leaching time of 120

Leaching of copper(I) sulphide by sulphuric acid

2003-7-1  The copper (I) sulphide leaching is a second-order reaction with respect to the concentration of H 2 SO 4 (Fig. 14) and its rate equation is: (12) − d [ Cu 2 S] d t =k H [ H 2 SO 4] 2 where: kNa and kH are rate constants; [NaNO 3] and [H 2 SO 4] are the leaching reagent concentrations.

Acid Leaching Copper Ore Treatment Method

2017-5-23  ACID SUPPLY. The source of sulphuric acid for leaching is usually a major consideration for small plants. If the plant is located in an area where acid can be purchased at low cost, one of the greater items of capital expense can be avoided. For

Sulfuric acid leaching for capturing value from copper

Sulfuric acid leaching for capturing value from copper rich converter slag Muhammad Kamran Khalid a, Joseph Hamuyuni a, Vivek Agarwal a, Jouni Pihlasalo b, Mika Haapalainen b, Mari Lundstrom€ a, * a Aalto University, School of Chemical Engineering, Department of Chemical and Metallurgical Engineering, P.O. Box 16200, FI 00076, Aalto, Finland b Outotec Research Center, Kuparitie 10, PO

Leaching of Copper from Cuprous Oxide in Aerated

Leaching of Copper from Cuprous Oxide in Aerated Sulfuric Acid Ilhwan Park1, Kyoungkeun Yoo1,*, Richard Diaz 3Alorro2, Min-seuk Kim3 and Soo-kyung Kim 1Department of Energy & Resources Engineering, Korea Maritime and Ocean University, Busan 49112, South Korea 2Department of Mining Engineering and Metallurgical Engineering, Western Australian School of Mines (WASM), Curtin

Sulfuric acid leaching for capturing value from copper

The study investigates the effect of particle size, temperature, acid concentration, agitation and leaching time under oxidizing conditions. The results showed that at optimized conditions (40 °C, 2 M H2SO4, 60 min leaching time, 0.26 kW/m3 mixing power, and 2000 mL/min oxygen flow rate), ca. 100% extraction of copper from slag into the

Sulfuric acid injection in copper heap leaching LEWA

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.

sulfuric acid copper leaching bostonenglish.pl

Leaching of iron from copper tailings by sulfuric acid In this study, the kinetics and mechanism of the leaching of iron from copper tailings using sulfuric acid were studied. Under optimal conditions (40 °C, sulfuric acid concentration of 0.53 mol L −1,stirring speed of 400 rpm, solid/liquid ratio of 1 : 10 and leaching time of 120

STUDIES ON THE CURING AND LEACHING KINETICS OF

2017-5-27  existing mathematical models of heap leaching. Sulfuric acid curing is a pretreatment to accelerate the extraction kinetics of copper ores and is widely used in copper operations. The curing process involves the addition of a highly concentrated sulfuric acid to the copper ore during agglomeration. Then, chemical reactions already begin prior to

Extraction of Tin and Copper by Acid Leaching of PCBs

2013-2-2  For copper in the l eached solution, sulfate bath was made by adding few drops of sulfuric acid and evaporating all the ntrc acd. It was ttrated to get the amount of copper presen . For recovery, Cementation was carried out at 60 °C till all copper was recovered.

Selective reductive leaching of cobalt and lithium from

In this article, the sulfuric acid leaching of industrially produced waste LIBs scraps with 23.6% cobalt (Co), 3.6% lithium (Li) and 6.2% copper (Cu) was investigated. The industrially produced LIBs scraps were shown to provide higher Li and Co leaching extractions compared to dissolution of corresponding amount of pure LiCoO 2. In addition

Some Studies on Sulfuric Acid Leaching of Anode

2002-11-13  The process involved the leaching of anode slime in sulfuric acid medium. At room temperature, sulfuric acid leaching without any additive resulted in poor recoveries of metals other than copper. With the addition of MnO2 to the leaching system at room temperature, an increase in the recovery values of copper, selenium, and tellurium was found.

Reacting copper(II) oxide with sulfuric acid

The copper(II) oxide powder can be provided in approximately 1 g quantities in labelled specimen tubes or plastic weighing boats. Dilute sulfuric acid, H 2 SO 4 (aq), (IRRITANT at concentration used) see CLEAPSS Hazcard HC098a. 20 cm 3 of the dilute sulfuric acid should be

Sulfuric acid leaching for capturing value from copper

Sulfuric acid leaching for capturing value from copper rich converter slag Muhammad Kamran Khalid a, Joseph Hamuyuni a, Vivek Agarwal a, Jouni Pihlasalo b, Mika Haapalainen b, Mari Lundstrom€ a, * a Aalto University, School of Chemical Engineering, Department of Chemical and Metallurgical Engineering, P.O. Box 16200, FI 00076, Aalto, Finland b Outotec Research Center, Kuparitie 10, PO

Sulfuric acid leaching for capturing value from copper

The study investigates the effect of particle size, temperature, acid concentration, agitation and leaching time under oxidizing conditions. The results showed that at optimized conditions (40 °C, 2 M H2SO4, 60 min leaching time, 0.26 kW/m3 mixing power, and 2000 mL/min oxygen flow rate), ca. 100% extraction of copper from slag into the

A statistical approach to the experimental design of

A statistical approach to the experimental design of the sulfuric acid leaching of gold-copper ore . F.D.Mendes; A.H.Martins *. Departamento de Engenharia Metalúrgica e de Materiais, Universidade Federal de Minas Gerais, Phone (0055) (31) 3238-1053, (0055) (31) 3238-1815,Belo Horizonte Minas Gerais (MG), CEP 30160-030, Brazil, E-mail: [email protected]

Process development for recovery of copper and

A novel hydrometallurgical process was proposed for selective recovery of Cu, Ag, Au and Pd from waste printed circuit boards (PCBs). More than 99% of copper content was dissolved by using two consecutive sulfuric acid leaching steps in the presence of H2O2 as oxidizing agents. The solid residue of

Extraction of Tin and Copper by Acid Leaching of PCBs

2013-2-2  For copper in the l eached solution, sulfate bath was made by adding few drops of sulfuric acid and evaporating all the ntrc acd. It was ttrated to get the amount of copper presen . For recovery, Cementation was carried out at 60 °C till all copper was recovered.

LEACHING KINETICS OF COPPER FROM CHALCOPYRITE

2013-9-7  Sulfuric acid processing with the addition of a small amount of nitrogen species has been employed for a long time in some industrial applications. The first patented commercial process by Sunshine Precious Metals (Idaho, USA) used a sulfuric and dilute nitric acid mixture to leach silver- and copper-bearing ores (Caldon, 1978).

Selective reductive leaching of cobalt and lithium from

In this article, the sulfuric acid leaching of industrially produced waste LIBs scraps with 23.6% cobalt (Co), 3.6% lithium (Li) and 6.2% copper (Cu) was investigated. The industrially produced LIBs scraps were shown to provide higher Li and Co leaching extractions compared to dissolution of corresponding amount of pure LiCoO 2. In addition

LEACHING OF LOW-GRADE COPPER ORES: A CASE

2017-6-9  leaching methods. Agents for leaching copper can be acid, base, or salt solutions. Of all of these agents, sulphuric acid has been given the broadest industrial application in hydrometallurgy of copper. The basic copper carbonate minerals, which are easily leached with the solution of sulphuric acid are: azurite, malachite and chrysocolla.

Copper Mining Operation Optimizes Sulfuric Acid

Copper Mining Operation Optimizes Sulfuric Acid Handling OVERVIEW Copper is fast becoming a critical resource as the world shifts to an increasingly lower carbon footprint, and with the growing demand comes a need for more efficient processing (i.e., refining) of the mineral ore.

Reacting copper(II) oxide with sulfuric acid

The copper(II) oxide powder can be provided in approximately 1 g quantities in labelled specimen tubes or plastic weighing boats. Dilute sulfuric acid, H 2 SO 4 (aq), (IRRITANT at concentration used) see CLEAPSS Hazcard HC098a. 20 cm 3 of the dilute sulfuric acid should be