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LEACHING OF LATERITIC NICKEL ORES OF KARACAM (ESKISEHIR-TURKEY) WITH HYDROCHLORIC ACID

Tevfik Ağaçayak

First published: 2011-06-20https://doi.org/10.5593/sgem2011/s04.114View metrics

Abstract

In this study, nickel extraction from Karaçam (Eskisehir) region laterites by hydrochloric acid leaching is ai med. The mineralogical analysis showed that the ore sample contains goethite, hema tite, wustite, retgers ite, gaspeite and clay type minerals together with quartz. The effects of various parameters such as leaching time, stirring speed, acid concentration and leaching temperature on nickel recovery were determined. The shrinking core model was applied to the results of experime nts investigating the effects of leaching temperature range of 40–90 °C. Two equations were applied from obtained results from each temperature value. Their correlation coefficients for each temperature are calculated. These results i ndicate that the dissolu tion rate of Ni is controlled by diffusion. The activation en ergy (Ea) for the dissolution reaction was calculated as 74.52 kJ/mol. Arrhenius constant was calculated to be 8.9633 s−1.

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Title
LEACHING OF LATERITIC NICKEL ORES OF KARACAM (ESKISEHIR-TURKEY) WITH HYDROCHLORIC ACID
Authors
Tevfik Ağaçayak
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2011 11th International Multidisciplinary Scientific GeoConference
Publisher
Stef92 Technology
Year
2011
Pages
Not available yet
ISSN
1314-2704
ISBN
Not available yet
Language
en
Publication type
Conference Paper
Keywords
Laterite oreNickelHClKaraçam (Eskişehir)Turkey
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