Ball Mills are horizontal rotating cylindrical steel chamber of half filled with steel balls. The size reduction is accomplished by the impact of balls as they fall back after being lifted by the baffles fitted in the rotating chamber. Ball Mill is fitted on a sturdy MS frame. Charging of balls and material is done by the means of opening provided in the chamber. The chamber is turning about the horizontal axis through a reduction gearbox drive through a ½ HP variable speed motor. Drive is provided to vary the RPM. A RPM indicator with proximity switch is provided in the set-up. A revolution counter is provided to find out the number of turns. Special arrangement is done to free the Ball Mill from reduction gearbox for charging and discharging the material.
Ø To study effect of RPM on the power consumption of a Ball Mill.
Ø To determine the efficiency of a Ball Mill for grinding a material of known Wi.
UTILITIES REQUIRED :
Ø Raw Material for Feed.
Ø Electric Supply : Single phase, 220 V AC, 1 kW.
Ø Set of Sieves with Sieve Shaker for analysis.
Ø Floor area 1.5 x 1m
TECHNICAL DETAILS :
Ø Ball Mill : Material MS Dia 275mm, Length 350mm. Thickness 5 mm.
Ø Discharge Chute : Suitable size.
Ø Feed Size : 6 mm (approx.)
Ø Product Size : 200 mesh (approx.)
Ø Drive : ½ HP, variable speed motor and Drive, coupled to Reduction
Ø Product receiver : Material Stainless Steel of suitable size.
Ø Revolution Counter : Mechanical type.
Ø Control Panel Comprises of :
Ø Energy measurement : Electronic Energy meter
Ø RPM Measurement : Digital RPM Indicator, Non Contact type with Proximity sensor.
Ø Instruction Manual : An ENGLISH instruction manual will be provided along
Ø with the Apparatus
Ø The set-up is fitted with required guards.
Ø The whole set-up is well designed and arranged in a good quality painted structure.
Ø Standard make on/off switch, Mains Indicator etc.
Scope of Delivery:
Ø 1 Self-contained “BALL MILL” Apparatus
Ø 1 Instruction Manual consisting of experimental procedures, block diagram etc.