grindability of binary ore blends in ball mills - sciencedirect the paper investigates the size reduction of blends of materials with different grindabilities in a bond ball mill, as well as in a continuous pilot-scale mill.,standard ball mill grindability test procedure,standard ball mill grindability test procedure standard bond ball mill grindability test methodprocedure, 14 dec 2015, here is the old allischalmers bond work index grindability test procedure the standard feed is prepared by stage crushing to all passing a 6 mesh sieve, but finer feed can be used when necessary it is screen analyzed.