Studies on the kinetics of zinc and indium extraction from indium-bearing zinc ferrite

Zhang, Yanjuan; Li, Xuanhai; Pan, Lijun; Liang, Xin; Li, Xueping

doi:10.1016/j.hydromet.2009.10.015

Cited by 61 publications

(15 citation statements)

References 12 publications

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“…As ZnFe 2 O 4 doesn't dissolve in most acidic and alkaline medium, recovery is a serious problem [5]. Generally high leaching temperatures and acid concentrations have been recommended to improve the zinc recovery [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Carbothermic Reduction of Zinc Ferrite by Microwave Heating

Wang

Srinivasakannan

et al. 2013

High Temperature Materials and Processes

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The kinetics of carbothermic reduction of ZnFe 2 O 4 in the temperature range 823-1223 K, was investigated in a microwave reactor. The mechanism of formation of ZnO and Fe 3 O 4 /FeO by decomposition of ZnFe 2 O 4 was explained using the equilibrium calculations and thermodynamics analysis using HSC chemistry software 6.0. In addition the effect of parameters such as the decomposition temperature, C/ZnFe 2 O 4 ratio, particle size and microwave power were assessed on the decomposition kinetics. Zn recovery as high as 98.83% could be achieved at a decomposition temperature of 1023 K, C/ZnFe 2 O 4 ratio of 1:3, particle size of +74-61 μm and microwave power of 1200 W. The kinetics of decomposition was found to be carbon gasification reaction controlled, with the activation energy of 39.21 kJ/mol.

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Section: Introductionmentioning

confidence: 99%

Carbothermic Reduction of Zinc Ferrite by Microwave Heating

Wang

Srinivasakannan

et al. 2013

High Temperature Materials and Processes

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“…Furthermore, the iron content in slag does not meet the requirement for steelmaking. To overcome these disadvantages, a variety of hydrometallurgical processes including caustic leaching with and without microwave [5,6], alkaline solution leaching [7,8], high pressure acid leaching [9,10], brine leaching [11,12] and leaching with various acids [13][14][15][16] were developed. In acid leaching processes, strict leaching conditions such as high temperature (90-95 • C) and high concentration of acid solution (200-250 g/l) are required to decompose zinc ferrite.…”

Section: Introductionmentioning

confidence: 99%

Recovery of iron from zinc leaching residue by selective reduction roasting with carbon

Peng

Chai

et al. 2012

Journal of Hazardous Materials

101

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“…In order to determine the kinetic parameters and the ratecontrolling step of the sphalerite leaching process, Sharps's method of reduced half time of reaction was used to select the kinetic models [25,[29][30][31][32] F(x) = A × (t/t 0.5 ) (5) where x is the degree of reaction, t 0.5 is the time to reach x = 50 %, and constant A depends on a function F(x).…”

Section: Kinetic Analysismentioning

confidence: 99%

Kinetics and mechanism of sphalerite leaching by sodium nitrate in sulphuric acid solution

Sokić

Marković

Matković

et al. 2012

J min metall B Metall

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Interest for application of hydrometallurgical processes in a processing of complex sulphide ores and concentrates has increased in recent years. Their application provides better metal recoveries and reduced emission of gaseous and toxic ageneses in the environment. The kinetics and mechanism of sphalerite leaching from complex sulphide concentrate with sulphuric acid and sodium nitrate solution at standard conditions was presented in this paper. The influences of temperature and time on the leaching degree of zinc were investigated and kinetic analysis of the process was accomplished. With temperature increasing from 60 to 90°C, the zinc leaching increased from 25.23% to 71.66% after 2 hours, i.e. from 59.40% to 99.83% after 4 hours. The selected kinetic model indicated that the diffusion through the product layer was the rate-controlling step during the sphalerite leaching. The activation energy was determined to be 55 kJ/mol in the temperature range 60-90°C. XRD, light microscopy and SEM/EDX analyses of the complex concentrate and leach residue confirmed formation of elemental sulphur and diffusion-controlled leaching mechanism

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Studies on the kinetics of zinc and indium extraction from indium-bearing zinc ferrite

Cited by 61 publications

References 12 publications

Carbothermic Reduction of Zinc Ferrite by Microwave Heating

Carbothermic Reduction of Zinc Ferrite by Microwave Heating

Recovery of iron from zinc leaching residue by selective reduction roasting with carbon

Kinetics and mechanism of sphalerite leaching by sodium nitrate in sulphuric acid solution

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