Kinetika procesa pečenja/selektivne redukcije uz upotrebu mešavine bitumenskog uglja i lož ulja kao aditiva Stručni rad
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Lateritna ruda je trenutno glavna sirovina koja omogućava ekstrakciju nikla Caron procesom. Do danas, kinetičko ponašanje procesa pečenja/selektivne redukcije lateritnih ruda nikla u pilot postrojenju je nedovoljno istraženo. U ovoj studiji, kinetičko ponašanje, faza koja kon¬troliše i mehanizmi koji opisuju ovaj proces primenom mešavine 2,00 mas.% bitu¬menskog uglja i 1,25 mas.% mazuta kao redukcionog aditiva određivani su tokom evaluacije visokog i niskog toplotnog profila. Faze redukovanih/izluženih minerala i polazne rude analizirane su rendgenskom difrakcijom praha. Pokazano je da smeša koja se koristi kao redukcioni aditiv garantuje adekvatnu transformaciju u oba termička profila; odnos između zaostalog nikla i vremena zadržavanja je opisan reakcijom prvog reda sa koeficijentima determinacije većim od 0,949. Iako nije analiziran uticaj vazduha posle sagorevanja, faza koja kontroliše proces je bila difuzija kroz sloj pepela sa energijom aktivacije od 14,4060 kJ mol-1. Dakle, najpreciznija kombinacija za opisivanje procesa je difuzija kroz sloj pepela i rast jezgara.
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