Matjie R H,Bunt J R,van Heerden J H P. Extraction of alumina from coal fly ash generated from a selected low rank bituminous South African coal[J]. Minerals Engineering,2005,18(3):299-310.
Seidel A,Zimmels Y. Mechanism and kinetics of aluminum and iron leaching from coal fly ash by sulfuric acid[J]. Chemical Engineering Science,1998,53(22):3835-3852.
[14]
Seidel A,Sluszny A,Shelef G,et al. Self inhibition of aluminum leaching from coal fly ash by sulfuric acid[J]. Chemical Engineering Journal,1999,72(3):195-207.
[15]
Kelmers A D,Canon R M,Egan B Z,et al. Chemistry of the direct acid leach,calsinter,and pressure digestion-acid leach methods for the recovery of alumina from fly ash[J]. Resources and Conservation,1982,9:271-279.