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We shut down last November when it was freezing, up to that time we had no problem with an abundance of froth in the rougher and scavenger cells.We were successfully grinding and floating a black sand concentrate with extremely fine black sand and very fine Gold.
This year we decided not to grind as all the successful flotation tests we had done were on our ore passing 8 mesh or 0.0937 screen. When feeding the un-ground ore to the flotation plant the problem we are having now is we cannot produce any froth. we have dropped the feed to the flotation tanks and have increased the reagents. The reagents we have on hand are Pax, Mibc and Danafloat 068.
This does not make any sense to us and feel we are missing something and any suggestions would be appreciated.
Thanks Orv