This instrument can be used to determine grindability of coal in coal industry, power plants, metallurgical industry and scientific research, etc.
Conformance to Standards
SO 5074:1994 Hard coal–Determination of Hardgrove Grindability Index.
ASTM D409-08 Standard Test Method for Grindability of Coal by the Hardgrove-Machine Method.
Spindle RPM 20±1r/min
Working Revolution 60r
Grinding Bowl Capacity 50g
Ball Diameter 25.4mm
Vertical Pressure of Grinding 284±2N
Power Requirement 220V, 50/60 Hz
Feed size 0.63~1.25mm
①With microcomputer intelligent controlling system, real time display of working status and process.
②High automation: Auto-lifting and loading, automatic revolution and counting, and stop automatically after 60 round.
③With built-in linear regression correction curve, calculation and calibration can be finished automatically.
④With emergency stop function. If restart, revolution counting can accumulate.
⑤With film key and LCD screen, it's easy to operate.
⑥Connection with balance is available; Data can be stored automatically; With micro-printer, it can realize the functions of date query, automatic calculation, result print and so on.
Conformance to standard
ISO 5074:1994 Hard coal – Determination of Hardgrove Grindability Index.
ASTM D 409-08 Standard Test Method for Grindability of Coal by the Hardgrove-Machine Method.