ISO 5074:1994 | ASTM D 409-08
This instrument can be used to determine grindability of coal in the field of coal industry, power plants, metallurgical industry and scientific research, etc.
With film key and LCD screen
With microcomputer intelligent controlling system, real time display of working status and process.
High automation: Auto-lifting&loading, automatic revolution&counting, and stop automatically after 60 round.
With built-in linear regression correction curve, calculation and calibration can be finished automatically.
With emergency stop function. If restart, revolution counting can accumulate.
With film key and LCD screen, it's easy to operate.
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.
Spindle RPM : 20±1r/min
Working Revolution : 60 r
Grinding Bowl Capacity : 50g
Ball Diameter : 25.4mm
Vertical Pressure of Grinding : 284±2N
Feed size : 0.63~1.25mm
Power Requirement : 220V, 50/60 Hz