B - Operations – Transporting – 07 – B
Patent
B - Operations, Transporting
07
B
241/142, 209/2,
B07B 1/00 (2006.01) B03B 9/00 (2006.01) B03C 1/00 (2006.01) B03D 1/02 (2006.01) B07B 9/00 (2006.01)
Patent
CA 1113043
ABSTRACT OF THE DISCLOSURE A process for the metallurgical treatment of pyroxenite- type ore, which comprises comminuting the ore to a particle size range of between about 40 and 600 micron, or alternatively between about 40 to 1000 micron, and thereafter subjecting the comminuted ore to dry HIMS to recover a non-attracted apatite concentrate from weakly attracted silicate minerals contained in the proxenite ore. Another aspect of the invention relates to the recovery of phlogopite and/or vermiculite from more weakly attracted diopside and non-attracted apatite by dry HIMS. A further aspect of the invention relates to particle size fractionation by pneumatic classification followed by dry HIMS, electrostatic separation and dry HIMS, and electrostatic separation alone, applied res- pectively to fine, medium, and coarse particle size fractions respectively to recover apatite from sili- cate minerals contained in pyroxenite ore.
317815
Burton Phillip F.
Hukki Risto T.
Foskem (proprietary) Limited
Macrae & Co.
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