Abstract: Bond grindability is used to calculate the specific energy for a comminution process， which assists in design of grinding circuit and selection of equipment. However， Bond grindability test is time-consuming and exhausting， and limited information is acquired from the test. Researchers have been working on development of alternative approaches for Bond grindability test. Observing most ores presented first-order grinding kinetics， Magdalinovic simulated equilibrium state of Bond grindability test by only 2 open-circuit grinding test， decreasing the experimental work significantly. Levin assumed that to any ore type the energy was constant which was consumed in a standard mill per revolution， and its mean value was calculated. By several grinding tests， the required number of revolutions was obtained， as well as the work index. Bond grindability test could be simulated by population balance model whose modeling parameters were derived from several grinding tests.The simulation could save much labor work as the grinding condition varied. Owing to the faster development of rock mechanics， researchers has been trying to correlate grindability/work index with mechanical properties of the ores to predict its grindability in mining site， which is a promising area to explore.

Key words: Grinding, Bond grindability test, Bond work index, Alternative approaches