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Leaching of iron from copper tailings by sulfuric acid

On the other hand, metal ions contribute to the liquid catalytic oxidation of SO 2, 15,16 and elements such as iron and silicon are important components for water treatment 17–19 and soil remediation. 20 Thus, it is important to explore the leaching behavior of metals in copper tailings to improve the application possibility of copper tailings.

Leaching behavior of aluminum, copper, iron and zinc from

Leaching behavior of aluminum, copper, iron and zinc from cement activated fly ash and slag stabilized soils Waste Manag . 2019 Jul 15;95:334-355. doi: 10.1016/j.wasman.2019.06.018.

(PDF) Copper Leaching Behavior of Iron-Oxide Hosted Copper

Copper Leaching Behavior of Iron-Oxide Hosted Copper-Gold Ore in Sulfuric Acid Medium 2615 reproducibility was com pletely confirmed by the experimen- tal results and the content of residual

Leaching behavior of aluminum, copper, iron and zinc from

Jul 15, 2019 The objectives of this study were to (1) investigate the metal leaching behavior from commonly used fly ashes and slag in geotechnical purposes, (2) assess the effects of fly ash, slag and cement contents on the leaching characteristics, (3) examine the influence of pH on the leaching behavior, and (4) identify the mechanisms controlling the

Leaching behavior of aluminum, copper, iron and zinc from

Toxicity characteristic leaching procedure (TCLP) tests were conducted to investigate the environmental hazards associated with the leaching of aluminum (Al), copper (Cu), iron (Fe) and zinc (Zn) from fly ashes, slag, type I/II cement and cement activated fly ash and slag stabilized soils.

Leaching of iron from copper tailings by sulfuric acid

Copper tailing is a widespread and intractable solid waste in copper production. Traditional leaching and recovery technology for copper tailing focuses on copper but neglects the leaching of iron. With the increase in applications and demands of iron-containing materials for environment, understanding the leaching

(PDF) Copper Leaching Behavior of Iron-Oxide Hosted Copper

Copper Leaching Behavior of Iron-Oxide Hosted Copper-Gold Ore in Sulfuric Acid Medium 2615 reproducibility was com pletely confirmed by the experimen- tal results and the content of residual

Leaching behavior of metals from iron tailings under

Feb 05, 2020 The aims of this work were to (i) understand the leaching behavior of Cd, Co, Cr, Cu, Fe, Mn, Ni, and Zn from two kinds of iron tailings at different initial pH and LMOWAs (citric acid, oxalic acid, and malic acid), and (ii) explore the microstructure characterization of tailings before and after pH static and LMWOA leaching using X-ray

Copper Oxide Ore Leaching Ability and Cementation Behavior

Moreover, in order to study copper cementation by iron powder, four factors of pH, temperature, time and amount of iron powder, are optimized at three levels. Finally, it is found that increasing acid concentration, temperature and time will cause an increase in the copper recovery of ores with the leaching method.

Understanding the leaching behavior of inorganic polymers

Nov 20, 2019 This study investigates the leaching of main and trace elements from inorganic polymers made with an iron rich, fumed, > 90% amorphous slag. Different inorganic polymer binders were synthesized, varying the amount of the activating solution and the silica over sodium oxide ratio from 1.6, to 1.8, to 2.0, with constant water content of ±63%.

Iron Control in Hydrometallurgy SGS

not favour iron hydrolysis during the leach; efforts have then to be made downstream to handle the relatively concentrated iron solutions and recover the acid and nickel from them. In another example, the . hydrometallurgical treatment of copper developed significantly after solvent extractants selective for copper over iron were commercialized.

CiNii 論文 Copper Leaching Behavior of Iron-Oxide Hosted

Copper Leaching Behavior of Iron-Oxide Hosted Copper-Gold Ore in Sulfuric Acid Medium Min Xiaobo,Watanabe Hitoshi,Takasaki Yasushi,Okura Takahiko,Tamura Muneyuki,Seong-Jin Joe,Nakamura Hidekatsu,Kida Yoshiharu MATERIALS TRANSACTIONS 49(11), 2611-2617, 2008

(PDF) A STUDY OF LEACHING OF COPPER OXIDE ORE BY SULPHURIC

The results show that recoveries of 98.17 % copper, 84.68 % cobalt, and 37.99 % iron can be obtained using experimental optimal conditions of 1 h leaching period at a temperature of 70 oC with a

A study on selective leaching of heavy metals vs. iron

Apr 01, 2019 Selective leaching of other metals vs. iron was shown to be possible in 0.2 M HCl, as the final pH of 2.9 indicates that iron had precipitated into the leach residue. Fig. 5 Extraction of Fe into a hydrochloric, sulfuric, oxalic, citric, and acetic acids and the measured final pH ( b ) values at T = 33 °C in the 24 h leaching tests

Minerals Free Full-Text Research on Behavior of Iron

Dissolved iron exerts significant effects on mineral leaching, impurity removal, and solution purification in the zinc hydrometallurgy process. To date, iron oxidation and migration behaviors are yet to be fully understood and further research on effective regulation mechanisms of iron is required. In this paper, zinc sulfide concentrate was used as the research object.

Leaching behavior of zinc and copper from zinc refinery

Leaching behavior of zinc and copper from zinc refinery residue and filtration drolysis of iron and silicon, and further increase in the tem-perature can promote the transformation of γ-Fe2O3 in the leaching residue into α-Fe2O3. At low temperatures, γ-Fe2O3

Copper Oxide Ore Leaching Ability and Cementation

The cementation process of copper by iron powder is provided by following eq-uation: Cu Fe Cu Fe22+++⇒+ As a result of the differences in electrochemical potentials, a reaction will take place. The reaction potential of Iron and Copper is presented in Table 3. Copper Oxide Ore Leaching Ability and Cementation Behavior, Mesgaran Deposit in

The Alteration Mechanism of Copper-bearing Biotite and

Oct 21, 2019 The XRF, XRD, polarizing microscopy and SEM-EDS were used to study the alteration mechanism of copper-bearing biotite and the leachable property of copper-bearing minerals in Mulyashy Copper

Minerals Free Full-Text Leaching of Primary Copper

Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from Antofagasta, Chile, was investigated after leaching with a chloride-ferrous media at two temperatures. The study focused on whether this chemical leaching system could be applied at an industrial scale. Leaching tests were conducted in columns loaded with approximately 50 kg of agglomerated ore; the

Copper Oxide Ore Leaching Ability and Cementation

The cementation process of copper by iron powder is provided by following eq-uation: Cu Fe Cu Fe22+++⇒+ As a result of the differences in electrochemical potentials, a reaction will take place. The reaction potential of Iron and Copper is presented in Table 3. Copper Oxide Ore Leaching Ability and Cementation Behavior, Mesgaran Deposit in

(PDF) Leaching behavior of aluminum, copper, iron and zinc

Leaching behavior of aluminum, copper, iron and zinc from cement. activated fly ash and slag stabilized soils. Masrur Mahedi. a, Bora Cetin. b,

Effect of temperature on copper, iron and lead leaching

Effect of temperature on copper, iron and lead leaching from e-waste using citrate solutions Waste Manag . 2018 Jan;71:420-425. doi: 10.1016/j.wasman.2017.10.029.

Kinetic Study of Chalcopyrite Leaching with Iron (III

The sizes selected for the present study include a maximum size of -106 + 75 µm and a minimum also used for the standard lines of -38 µm, Fig. 2c shows that the response of the copper leaching is highly dependent on grain size small changes in size increase the difficulty of the leaching and the several extra hr of reaction, e.g. for the

(PDF) A STUDY OF LEACHING OF COPPER OXIDE ORE BY SULPHURIC

The results show that recoveries of 98.17 % copper, 84.68 % cobalt, and 37.99 % iron can be obtained using experimental optimal conditions of 1 h leaching period at a temperature of 70 oC with a

CiNii 論文 Copper Leaching Behavior of Iron-Oxide Hosted

Copper Leaching Behavior of Iron-Oxide Hosted Copper-Gold Ore in Sulfuric Acid Medium Min Xiaobo,Watanabe Hitoshi,Takasaki Yasushi,Okura Takahiko,Tamura Muneyuki,Seong-Jin Joe,Nakamura Hidekatsu,Kida Yoshiharu MATERIALS TRANSACTIONS 49(11), 2611-2617, 2008

Leaching behavior of zinc and copper from zinc refinery

Leaching behavior of zinc and copper from zinc refinery residue and filtration drolysis of iron and silicon, and further increase in the tem-perature can promote the transformation of γ-Fe2O3 in the leaching residue into α-Fe2O3. At low temperatures, γ-Fe2O3

A study on selective leaching of heavy metals vs. iron

Apr 01, 2019 Selective leaching of other metals vs. iron was shown to be possible in 0.2 M HCl, as the final pH of 2.9 indicates that iron had precipitated into the leach residue. Fig. 5 Extraction of Fe into a hydrochloric, sulfuric, oxalic, citric, and acetic acids and the measured final pH ( b ) values at T = 33 °C in the 24 h leaching tests

Minerals Free Full-Text Leaching of Primary Copper

Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from Antofagasta, Chile, was investigated after leaching with a chloride-ferrous media at two temperatures. The study focused on whether this chemical leaching system could be applied at an industrial scale. Leaching tests were conducted in columns loaded with approximately 50 kg of agglomerated ore; the

Minerals Free Full-Text Research on Behavior of Iron

Dissolved iron exerts significant effects on mineral leaching, impurity removal, and solution purification in the zinc hydrometallurgy process. To date, iron oxidation and migration behaviors are yet to be fully understood and further research on effective regulation mechanisms of iron is required. In this paper, zinc sulfide concentrate was used as the research object.

Study on Selective Removal of Impurity Iron from Leached

Abstract: In order to selectively remove iron from copper laden solution after leaching but prior to electrowinning, equilibrium, kinetic, and thermodynamic studies have been conducted on an a chelating resin of Rexp-501 at pH 1.0 and at various temperatures.

Copper Oxide Ore Leaching Ability and Cementation Behavior

Copper Oxide Ore Leaching Ability and Cementation Behavior, Mesgaran Deposit in IRAN 1 hour and 1.5 times more than the stoichiometric equation of required iron powder amount to precipitate

Investigating the Leaching Behavior of Copper from

higher order (i.e. ferric iron) and can be precipitated as hematite or goethite forms by oxygen purging into leach liquor. The sulfur in the concentrate is also released due to dissolution in the leaching medium and ultimately is precipitated. Literature indicates that there are few reports on the leaching behavior of copper from a concentrate

CONTAMINANTS OF POST-LEACHING COPPER SOLUTIONS

Contaminants of post-leaching copper solutions and their behavior during extraction 137 Pregnant leaching solutions (PLS) feed for copper extraction The composition of the solutions from microbiological leaching of copper concentrate is shown in Table 1. They were used in extractive continuous and counter-current experiments. Table 1.