Response surface design for nickel recovery from laterite by sulfation-roasting-leaching process

Liu, Dong; Park, Kyung‐Ho; Wu, Zhan; Guo, Xueyi

doi:10.1016/s1003-6326(10)60019-2

Cited by 37 publications

(17 citation statements)

References 8 publications

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“…In this research, the analysis of the experimental design was conducted, using response surface methodology (RSM) where the used experimental parameters and outcomes are shown in Table 4. The RSM approach is a laboratory technique to find an optimal response within the specified ranges for parameters 9 . Three effective factors were selected at three different levels to evaluate the effective parameters.…”

Section: Methodsmentioning

confidence: 99%

“…Owing to decreasing production of nickel from these sources, the extraction of nickel from oxide ores (laterites) has become more prevalent 4‐8 . In addition, more than 70% of the world's known nickel reserves are found in laterite ores 5,7,9,10 . Recent advances have reduced the dependence on nickel sulfide ores and have opened a new vista for use of laterites as a new source of nickel ore 11,12 .…”

Section: Introductionmentioning

confidence: 99%

“…There are two different methods to process the low‐grade nickel laterite ore with high iron. The first approach involves the reduction of gangue metals such as Fe and Mn to achieve nickel, and the second one all metals are leached, and in the next step purification is performed with solvent extraction 9 . In the present research, the second method was used.…”

Section: Introductionmentioning

confidence: 99%

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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

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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.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

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

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“…In recent years, a wave of development and utilization of geothermal resources has been set off in North China. However, the fluoride content of geothermal water is very high (3-10 mg/L) in Northern China [1]. Generally, fluoride concentration in drinking water ranging from 0.5 to 0.8 mg/L prevents people from getting dental cavities, but long-term intake of water that contains more than 1.5 mg/L of fluoride may cause bone disease and mottling of the teeth [2].…”

Section: Introductionmentioning

confidence: 99%

Treatment of geothermal water with high fluoride content by electrocoagulation

Zhang

Tan

Niu

et al. 2015

Desalination and Water Treatment

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A B S T R A C TThe performance of electrocoagulation (EC) process in the treatment of geothermal water with high fluoride content was studied. The effect of applied current density, electrode plate number, electrode plate distance, and the temperature of geothermal water was investigated. The results show that EC can effectively reduce fluoride content to a low level, which can supply sanitary standard for drinking water in China (GB 5749-2006(GB 5749- , 2006. With the increase in current density and electrode plate area, the removal efficiency of fluoride in geothermal water was also increased. However, with electrode plate distance increased from 0.5 to 2.0 cm, the fluoride removal efficiency decreased accordingly. The fluoride removal efficiency was improved when geothermal water temperature was increased from 18 to 38˚C, while the fluoride removal efficiency changed little with geothermal water temperature from 38 to 62˚C.

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“…It has also been successfully applied to different processes for achieving its optimization using experimental designs [14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Characterization, kinetics and statistical screening analysis of gmelina seed oil extraction process

Uzoh

Onukwuli

Nwabanne

2014

Mater Renew Sustain Energy

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The kinetics and optimization of oil extraction from gmelina seed was studied. The effect of various process variables such as temperature, time, volume of solvent, particle size, and their interaction on oil yield was investigated. A predictive model describing the oil yield in terms process variables was derived from multiple regression analysis. Optimum yield of 49.90 % was predicted at extraction temperature of 60°C, extraction time of 60 min, seed particle size of 150 lm and 150 ml volume of solvent, for the process. It was found that oil yield increased with increase in temperature, time and volume of solvent but decreased with increase in seed particle size. The extract was analyzed to examine its physico-chemical properties (acid value, iodine value, peroxide value, viscosity, saponification value, moisture and ash content, refractive index, smoke, flash and fire points, and specific gravity) and structural elucidation by standard methods and instrumental techniques. Results revealed that the oil is not edible but find potential in biodiesel production. The kinetic study showed that the extraction process follows a second order mechanism with a rate constant of 1.26 9 10 11 (dm 3 mol -1 ) 3 S -1 .

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Response surface design for nickel recovery from laterite by sulfation-roasting-leaching process

Cited by 37 publications

References 8 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

Treatment of geothermal water with high fluoride content by electrocoagulation

Characterization, kinetics and statistical screening analysis of gmelina seed oil extraction process

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