Upotreba smeše uglja i nafte kao aditiva za selektivnu redukciju lateritne rude Caron procesom Stručni rad
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Lateritne rude predstavljaju glavni izvor sirovine za ekstrakciju Ni i Co po Caron procesu. Potrošnja ulja u redukcionoj peći jedan je od ključnih pokazatelja da li je metalurški proces ekonomičan. Do danas nije bilo moguće zameniti aditiv lož ulje koji se koristi u komercijalnim razmerama, stoga je cilj ove studije bio da se delimično zameni nafta bitumenskim ugljem na pilot skali korišćenjem mešavine 2 % uglja i 1,25 % nafte kao redukcionog aditiva. Faze redukovanih/luženih ruda analizirane su difrakcijom rendgenskih zraka praha, dok je metalno stanje rude određivano luženjem izreagovanih uzoraka rastvorom brom-etanola nakon čega je usledila analiza atomske apsorpcione spektrometrije. Ekstrakcije Ni i Co potvrđene su luženjem redukovane rude rastvorima amonijum-amonijum karbonata. Uočeno je da smeša koja se koristi kao redukcioni aditiv može da zameni mazut jer omogućava adekvatnu transformaciju glavnih mineraloških faza lateritne rude tokom procesa redukcije i prosečne prinose ekstrakcije Ni i Co za ~3 i ~8. %, redom. Iako efekat veličine čestica bitumenskog uglja u procesu nije analiziran, redukciona smeša je obezbedila da je Caron proces efikasniji.
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