Ammonium sulfate ((nh4) 2so4) and fly ash in the calcination, can be one of the Al2O3 component converted to aluminum ammonium sulfate leaching, roasting - acid leaching step method extracted from coal ash Al2O3. (Nh4) 2so4 and fly ash mixed in proportion After calcination, leaching sulfuric acid so

Ammonium sulfate (based on 4) 2 (NH SO 4) and coal ash in roasting, you can be one of the 2 Al O group 3 can be divided into the aluminum sulphate leaching from ammonium, roasting - acid flooding two-step extraction from coal ash O Al 2 3. (4) 2 NH SO4 and coal ash mixture on a pro rata basis, roast

Based on ammonium sulfate ((NH4)2SO4) with pulverized coal ash when roasting, may transform Al2O3 component as the aluminum ammonium sulfate which may soak takes, uses the roasting - acid pickling two steps to withdraw Al2O3 from the pulverized coal ash.(NH4)2SO4 and the pulverized coal ash after th

Based on ammonium sulfate ((NH4) 2SO4) and fly ash when the roasting, Al2O3 components can be converted into ammonium sulfate leaching, using acid by roasting-leaching two-step extraction of Al2O3 from fly ash. (NH4) 2SO4 after mixed with fly ash proportion, baking, using sulfuric acid leaching, ext

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