Atmospheric pressure acid leaching of Caldag lateritic nickel ore

Kurşunoğlu, Sait; Kaya, Muammer

doi:10.1016/j.minpro.2016.03.001

Cited by 44 publications

(21 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Petrus et al found that with increasing solid content the amount of leaching agent (liquid) may be insufficient to dissolve the metals present in the laterite 10 . Kursunoglu and Kaya, 28 combining the results from Littlejohn's research in 2007 and MacCarthy in 2014, revealed the following three reasons for reducing recovery by increasing the solid‐to‐liquid ratio of the laterites leaching: (1) increasing the amount of silica in the sample creates a diffusion layer on the surface of the particles; (2) access to unreacted surfaces is limited, H + penetration is limited by the formation of a solid porous layer of the product on the particle surface; and (3) slower leaching of resistant minerals such as hematite and goethite. Certainly, for the studied sample in this research, the issue of a porous layer will not come into consideration, as it does not have any silicate minerals that are soluble.…”

Section: Resultsmentioning

confidence: 99%

“…These parameters include the concentration of sulfuric acid with three levels of 2, 3.5, and 5 M, solid‐to‐liquid ratio with three levels of 0.1, 0.2, and 0.3, and stirring speed with three levels of 300, 450, and 600 rpm. These parameters and their levels were selected from previous research 26,28, 29 . The recoveries of Ni, Co, and Fe were considered as responses.…”

Section: Methodsmentioning

confidence: 99%

“…These parameters and their levels were selected from previous research. 26,28,29 The recoveries of Ni, Co, and Fe were considered as responses. The reason for the high acid consumption in this study was the high amount of iron in the laterite sample.…”

Section: Design Of Experimentsmentioning

confidence: 99%

See 2 more Smart Citations

Dissolution optimization and kinetics of nickel and cobalt from iron‐rich laterite ore, using sulfuric acid at atmospheric pressure

Nasab

Noaparast

Abdollahi

2020

Int J of Chemical Kinetics

View full text Add to dashboard Cite

More than 70% of the world's nickel reserves are found in laterite ores. In this research, a laterite ore sample, containing Ni, Co, and Fe, was employed to study the recovery of nickel and cobalt. Thus, the effect of calcination, acid concentration, percent solids, and stirring rate on nickel and cobalt recoveries from an iron‐rich laterite sample was investigated. Optimization with response surface methodology and kinetic studies were performed. The calcination of the sample prior to leaching at 500°C for 2 h provided condition for better nickel and cobalt dissolutions. At optimal conditions, the concentration of sulfuric acid, solid‐to‐liquid ratio, stirring speed, temperature, and time test were equal to 5 M, 0.1, 370 rpm, 90°C, and 2 h, respectively. The highest recoveries of nickel and cobalt were 65.9% and 63.1%, respectively. Solids content had a negative effect on Ni and Co recovery, whereas acid concentration was positively affected. Addition of 10% (w/v) NaCl in the presence of 5 M acid concentration, 60°C, 370 rpm, and leaching time of 2 h increased the nickel and cobalt recoveries, 15.3% and 21.4%, respectively. The high dependence of process on temperature indicates chemical control; the activation energies Ea = 59.54 and Ea = 45.74 kJ/mol, respectively, for nickel and cobalt, were also consistent with this conclusion.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Dissolution optimization and kinetics of nickel and cobalt from iron‐rich laterite ore, using sulfuric acid at atmospheric pressure

Nasab

Noaparast

Abdollahi

2020

Int J of Chemical Kinetics

View full text Add to dashboard Cite

show abstract

“…The final recovery rates of nickel and iron were 95.62% and 86.50%, respectively. Kursunoglu and Kaya [33] extracted nickel, cobalt and iron from Caldag laterite ores using atmospheric sulfuric acid leaching. extractions of nickel, cobalt and iron were 91.9%, 93.5% and 80.5% were achieved under the following leaching conditions: ore particle size of 212μm， sulfuric acid concentration of 2 mol/L, leaching time of 6 h, pulp density of 10% w/v, leaching temperature of 90℃ and shaker speed of 500 rpm.…”

Section: Advances In Computer Sciencementioning

confidence: 99%

“…. In addition, it can be used to leach relatively low grade nickel laterite ores [33]. Nitric acid leaching is widely applicable for treating nickel laterite ores.…”

Section: Advances In Computer Sciencementioning

confidence: 99%

Current Studies of Treating Processes for Nickel Laterite Ores

Wang¹,

Sun

Chen

et al. 2017

Proceedings of the 2nd International Conference on Mechatronics Engineering and Information Technology (ICMEIT 2017)

View full text Add to dashboard Cite

Abstract. Nickel laterite ores are important nickel resources, which are abundant and account for approximately 70% of the world nickel reserves. However, nickel in nickel laterite ores could not be extracted by conventional separation methods. Consequently, treating and utilizing nickel laterite ores efficiently is of vital importance. This article reviews hydrometallurgical processes, pyro metallurgical methods, and reduction roasting-magnetic separation technique with reference to current studies of treating processes for nickel laterite ores.

show abstract

Photoelectrochemical Lithium Extraction from Waste Batteries

Lyu,

Zheng,

Wang

2024

ChemSusChem

View full text Add to dashboard Cite

The amount of global hybrid‐electric and all electric vehicle has increased dramatically in just five years and reached an all‐time high of over 10 million units in 2022. A good deal of waste lithium (Li)‐containing batteries from dead vehicles are invaluable unconventional resources with high usage of Li. However, the recycle of Li by green approaches is extremely inefficient and rare from waste batteries, giving rise to severe environmental pollutions and huge squandering of resources. Thus, in this mini review, we briefly summarized a green and promising route‐photoelectrochemical (PEC) technology for extracting the Li from the waste lithium‐containing batteries. This review first focuses on the critical factors of PEC performance, including light harvesting, charge‐carrier dynamics, and surface chemical reactions. Subsequently, the conventional and PEC technologies applying in the area of Li recovery processes are analyzed and discussed in depth, and the potential challenges and future perspective for rational and healthy development of PEC Li extraction are provided positively.

show abstract

Atmospheric pressure acid leaching of Caldag lateritic nickel ore

Cited by 44 publications

References 21 publications

Dissolution optimization and kinetics of nickel and cobalt from iron‐rich laterite ore, using sulfuric acid at atmospheric pressure

Dissolution optimization and kinetics of nickel and cobalt from iron‐rich laterite ore, using sulfuric acid at atmospheric pressure

Current Studies of Treating Processes for Nickel Laterite Ores

Photoelectrochemical Lithium Extraction from Waste Batteries

Contact Info

Product

Resources

About