DISSOLUTION OF LATERITIC NICKEL ORE IN SULPHURIC ACID MEDIUM WITH POTASSIUM DICHROMATE
Küçük Resim Yok
Tarih
2008
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
INT SCIENTIFIC CONFERENCE SGEM
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, leaching of Ni and Fe in suphuric acid medium with K2Cr2O7 was investigated. The samples of the lateritic nickel ore were taken from Karacam (Eskisehir) region of Turkey. Mineralogical investigations showed that the ore sample contains, goethite, hematite, wustite, retgersite, gaspeite and clay type minerals together with quartz. The shrinking core model was applied to the results of experiments investigating the effects of leaching temperature range of 50-96 degrees C. Two equations were applied from obtained results from each temperature value. Their correlation coefficients for each temperature are calculated. These results indicate that the dissolution rate of Ni is controlled by diffusion. The activation energy for the leaching process was found to be 68.43 kJ/mol and the Arrhenius constant was calculated to be 8.231 s(-1).
Açıklama
8th International Scientific Conference on Modern Management of Mine Producing, Geology and Environmental Protection -- JUN 16-20, 2008 -- Sofia, BULGARIA
Anahtar Kelimeler
Nickel, leaching, dissolution kinetics, H2SO4, K2Cr2O7, Karacam (Eskisehir), Turkey
Kaynak
SGEM 2008: 8TH INTERNATIONAL SCIENTIFIC CONFERENCE, VOL I, CONFERENCE PROCEEDINGS: MODERN MANAGEMENT OF MINE PRODUCING GEOLOGY AND ENVIRONMENTAL PROTECTION
WoS Q Değeri
N/A
Scopus Q Değeri
N/A
