Mineralogy, petrology, and chemistry studies to evaluate oxide copper ores for heap leaching in Sarcheshmeh copper mine, Kerman, Iran

Shayestehfar, M R; Nasab, Saeed Karimi; Mohammadalizadeh, H.

doi:10.1016/j.jhazmat.2007.10.100

Cited by 30 publications

(7 citation statements)

References 7 publications

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“…For this reason, a great deal of attention has been focused on the study of the behavior and kinetics of leaching. Researches on leaching behavior and kinetics of copper oxide ores have been extensively conducted by different lixiviants including mineral acids such as HCl, H 2 SO 4 and HNO 3 [7,[9][10][11]; organic acids such as citric acid and lactic acid [11][12][13]; chlorine [14], ammonium hydroxide or ammonium salts including ammonium chloride, ammonium sulfate, ammonium nitrate, ammonium citrate and ammonium acetate, etc. (2,(15)(16)(17)(18)(19)(20)(21)(22)(23)(24) and alkaline glycine solutions [25].…”

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A comprehensive study of the leaching behavior and dissolution kinetics of copper oxide ore in sulfuric acid lixiviant

2018

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The leaching behavior of an Iranian copper oxide ore in sulphuric acid was investigated in detail to evaluate the influence of various factors, to optimize the dissolution conditions and to determine the kinetics of the leaching. The results indicated that the increase in the leaching time and temperature enhanced the leaching rate of copper. The leaching rate increased up to a certain value with increasing the agitation rate, acid concentration and liquid/solid ratio and with further increment reduced. Agitaion rate had the most influence on the dissolution of copper. The 3D response surface graphs confirmed the interactive effects of sulphuric acid concentration, agitation speed, and liquid/solid ratio with temperature. About 91% copper content was leached at~13% sulphuric acid concentration, stirring rate of 600 rpm, liquid/solid ratio of 10 mL/g and 50 °C after 80 min leaching. The dissolution kinetics was examined according to heterogeneous models. The shrinking core model assuming rate control by diffusion through the product layer was found appropriate to describe the dissolution of copper in sulphuric acid solution. The activation energy was obtained to be 26.699 kJ/mol and equation representing the leaching kinetics of copper based on diffusioncontrolled model was found to be 1-3(1-x) 2/3 +2(1-x) = 161.97×exp(-26.699×10 3 /8.314×T)×t.

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A comprehensive study of the leaching behavior and dissolution kinetics of copper oxide ore in sulfuric acid lixiviant

2018

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“…Dump, heap and in-situ leaching are the most common hydrometallurgical methods for copper recovery from these raw materials on an industrial scale [16][17][18]. A considerable amount of copper is recovered using these methods, which reduces uncontrollable pollution of the environment with heavy metal ions and acid occurring as a result of the natural leaching processes represented by the equations in Table 1.…”

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Leaching of low-grade copper ores: A case study for 'Kraku Bugaresku-Cementacija' deposits (Eastern Serbia)

Bogdanović¹,

Stanković²,

Trumić³

et al. 2016

J Min Metall A

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“…특 히 Ca와 Mg가 많은 양으로 용해되므로 더미 시료 에 황산알루미늄 혹은 황산마그네슘 등과 같은 2차 광물들이 형성될 가능성이 매우 높다 (Shayestehfar et al, 2008). (Fig.…”

Section: 유용금속 용출 및 맥석광물의 용해 특성unclassified

The Characteristic Dissolution of Valuable Metals from Mine-Waste Rock by Heap Bioleaching, and the Recovery of Metallic Copper Powder with Fe Removal and Electrowinning

Kim¹,

Cho²,

Choi³

et al. 2014

Journal of the Mineralogical Society of Korea

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: In order to recover the metallic copper powder from the mine-waste rock, heap bioleaching, Fe removal and electrowinning experiments were carried out. The results of heap leaching with the mine-waste rock sample containing 0.034% Cu showed that, the leaching rate of Cu were 61% and 62% in the bacteria leaching and sulfuric acid leaching solution, respectively. Sodium hydroxide (NaOH), hydrogen peroxide (H 2 O 2 ) and calcium hydroxide (Ca(OH) 2 ) were applied to effectively remov Fe from the heap leaching solution, and then H 2 O 2 was selected for the most effective removing Fe agent. In order to prepare the electrolytic solution, H 2 O 2 were again treated in the heap leaching, and Fe removal rates were 99% and 60%, whereas Cu removal rates were 5% and 7% in the bacteria and *Corresponding author: +82-62-230-7878, E-mail: cybpark@chosun.ac.kr 김봉주⋅조강희⋅최낙철⋅박천영 -208 -sulfuric acid leaching solutions, respectively. After electrowinning was examined in these leaching solution, the recovery rates of Cu were obtained 98% in bacteria and obtained 76% in the sulfuric leaching solution. The dendritic form of metallic copper powder was recovered in both leaching solutions.

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Mineralogy, petrology, and chemistry studies to evaluate oxide copper ores for heap leaching in Sarcheshmeh copper mine, Kerman, Iran

Cited by 30 publications

References 7 publications

A comprehensive study of the leaching behavior and dissolution kinetics of copper oxide ore in sulfuric acid lixiviant

A comprehensive study of the leaching behavior and dissolution kinetics of copper oxide ore in sulfuric acid lixiviant

Leaching of low-grade copper ores: A case study for 'Kraku Bugaresku-Cementacija' deposits (Eastern Serbia)

The Characteristic Dissolution of Valuable Metals from Mine-Waste Rock by Heap Bioleaching, and the Recovery of Metallic Copper Powder with Fe Removal and Electrowinning

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