IS 4433 : 1979 Method for Determination of Hardgrove Grindability Index of Coal

1 Scope

1.1 This standard prescribes the method for determining thegrindability index of all types of Indian coals, excepting browncoals and lignites, using the Hardgrove machine.

2 References

IS 2 :1960Rules for rounding off numerical values

IS 436 : Part I : Sec 1 : 1964 Methods for samplingof coal and coke:Part I Sampling of coal,Section 1 Manual sampling

IS 460 :1962Specification for test sieve

IS 3810 : Part I :1978Glossary of terms relating to solidmineral fuels:Part I Terms relating to coal preparation

IS 3810 : Part II :1978Glossary of terms relating to solidmineral fuels:Part II Terms relating to coal samplingand analysis