Working Principle Of Hardgrove Grindability

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    the hgi tester takes grinding law as the theoretical basis (the energy consumed in grinding coal is proportional to the new surface area of coal powder), by grinding, sieving and weighing the prepared coal sample under the conditions specified in gb/t1998 "coal grindability index determination methods" (hardgrove method), then you can read the grindability index from the index charts of standard coal

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