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Titolo:
LEACHING KINETICS OF MALACHITE IN AMMONIA SOLUTIONS
Autore:
KUNKUL A; KOCAKERIM MM; YAPICI S; DEMIRBAG A;
Indirizzi:
INONU UNIV,FAC ENGN,DEPT CHEM ENGN MALATYA TURKEY ATATURK UNIV,FAC ENGN,DEPT CHEM ENGN 25240 ERZURUM TURKEY
Titolo Testata:
International journal of mineral processing
fascicolo: 3-4, volume: 41, anno: 1994,
pagine: 167 - 182
SICI:
0301-7516(1994)41:3-4<167:LKOMIA>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
14
Recensione:
Indirizzi per estratti:
Citazione:
A. Kunkul et al., "LEACHING KINETICS OF MALACHITE IN AMMONIA SOLUTIONS", International journal of mineral processing, 41(3-4), 1994, pp. 167-182

Abstract

In this study, the leaching kinetics of malachite in ammonia solutions was investigated in a magnetically stirred reactor, taking particle size, ammonia concentration, solid/liquid ratio and reaction temperature as parameters. It was observed that the leaching rate increases with increasing ammonia concentration, reaction temperature, decreasing solid/liquid ratio and particle size. The reaction order to the solid concentration is determined to be 1.0. It was also determined that the leaching process was controlled by the diffussion through the ash layer, which is the insoluble inert gangue material consisted of mainly SiO2, around the shrinking unreacted core. The activation energy for theleaching process was found to be 22.338 kJ mol-1, and the Arrhenius constant was calculated to be 2.188 s-1.

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Documento generato il 16/07/20 alle ore 06:22:27