Beneficiation of iron ore slime using Aspergillus niger and Bacillus circulans.
Studies were carried out on the removal of alumina from iron ore slime containing (%) Fe(2)O(3) 75.7, Al(2)O(3) 9.95, SiO(2) 6.1, Fe (total) 52.94 with the help of Bacillus circulans and Aspergillus niger. B. circulans and A. niger showed 39% and 38% alumina removal after six and 15 days of in situ leaching at 10% pulp density, respectively. Culture filtrate leaching with A. niger removed 20% alumina at 2% pulp density with 13 day old culture filtrate. B. circulans was more efficient than A. niger for selective removal of alumina. In case of A. niger in situ leaching rather than culture filtrate leaching was found to be more effective.
Regional Research Laboratory, CSIR, Bhubaneshwar, India. npradhan@rrlbhu.res.in
N
N
Pradhan
B
B
Das
C S
CS
Gahan
R N
RN
Kar
L B
LB
Sukla
D000535:Aluminum / Q000378:metabolism; D001234:Aspergillus niger / Q000378:metabolism*; D001407:Bacillus / Q000378:metabolism*; D004783:Environmental Microbiology; D007218:Industrial Microbiology / Q000379:methods*; D007220:Industrial Waste; D007501:Iron; D008906:Mining / Q000379:methods; D012822:Silicon Dioxide / Q000378:metabolism
D007220:Industrial Waste; D012822:Silicon Dioxide; D000535:Aluminum; D007501:Iron