Dergiler / Scientific Mining Journal / 2019 / Cilt: 58 Sayı: 2
PİROFİLLİT CEVHERİNDEN ASİT LİÇİ YÖNTEMİYLE ALÜMİNYUM KAZANIMINA AKTİVASYONUN ETKİSİ
- Sayfa
- 111–120
- DOI
- —
Özet
Bu çalışmada, Pütürge (Malatya) pirofillit yatağından alınan %23,6 Al2O3 içerikli cevherden asit
Abstract
In this study, effect of activation conditions on the recovery of aluminum (Al) obtained by acidleaching from Pütürge (Malatya) pyrophyllite ore containing 23.6% Al2O3 was investigated. In thiscontext, the initially non-activated ore and later activated ore samples using calcining and intensivemilling were leached with HCl, separately. According to the experimental results, Al-recovery inthe leachate for the raw, calcined and intensively milled ore samples were found to be 10.57%,33.63% and 86.5%, respectively. It was also found that there was not sufficient dilation betweenthe clay layers during calcination and the porous structure could not be obtained, also the newmineral phases which resist to dissolution in acidic media were formed at high temperatures. Forthis reason, the aluminum recovery of thermally activated ore was relatively low. However, it wasconfirmed that mechanical activation by intensive milling led to amorphization of clay minerals,and thus, the mechanical activation significantly improved the dissolution behavior of aluminum.As a result of this study, it is concluded that while Al recovery is slightly increased by thermalactivation, it is dramatically increased by mechanical activation.