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HGI Test Apparatus is a laboratory equipment used as sample preparation equipment. The HGI equipment should have such a facility which grind the coal, cokes, bio coal pellets coke samples to determine the HGI as per below standards

Standards: ISO 5074:1994 Hard Coal-Determination of Hardgrove Grindability Index                                           

ASTM D409-08 Standard Test Method for Grindability of coal by the Hardgrove-Machine

 IS 4433: 1979(R2005) METHOD FOR DETERMINATION OF HARDGROVE GRINDABILITY INDEX OF COAL.

Grinding balls MOC: Chrome Steel.

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