Abstract: New method is proposed for the grinding medium consumption research for different requirements on ore properties and grind fineness and the technical equipment. Based on the study on the grind work index and grindability of Dagushan and Donganshan iron ores, the theoretical and practical medium consumption coefficients of the secondary and tertiary grinding in both Dagushan Concentrator and Donganshan Sintering Plant are calculated, analyzed and compared. Based on this, what should be strengthened in reducing the grinding medium of both plants is proposed.

Key words: Grinding medium, Work index, Grindability