Process for recovering magnetite from fly ash

Details Process for recovering magnetite from fly ash Process for recovering magnetite from fly ash

B - Operations, Transporting

02

C

209/2, 209/87

B02C 23/14 (2006.01)

Patent

CA 1112210

PROCESS FOR RECOVERING MAGNETITE FROM FLY ASH ABSTRACT OF THE DISCLOSURE This invention relates to a process for recovering magnetite from fly ash. Fly ash containing magnetite is made into a slurry having 5% to 10% solids by weight and the slurry is then concentrated in a settling tank to a slurry having approximately 20% solids by weight. The concentrated slurry is delivered to a magnetic separator where the magnetite is separated from the remainder of the fly ash. The magnetite is then crushed in a pulverizer to a size so that 95% of the crushed magnetite will pass through a 325 mesh sieve. The crushed magnetite is then de- livered to a second magnetite separator which is weaker than the first magnetic separator to separate the crushed magnetite from any impurities. The purified crushed magnetite is then dried and stored.

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