About

Ball mills are used for mixing and size reduction of powders, colloidal grinding and mechanical alloying. Two types of mills are installed, (A) High energy ball mill (B) Planetary ball mill.

Specification of high energy ball mill:

• Principle: Milling to be done using friction and repeated impact of shots and balls.

• Applications: Mechanical alloying, homogenization, size reduction, colloidal grinding. These application are the domain of chemistry, civil engineering, recycling of wastes, metallurgy, mining, chemicals, ceramics, and oxides etc.

• Feeding materials: Wet, dry, brittle, medium hard to hard, fibrous, etc.

• Size reduction principle: Combination of impact, friction and revolution.

• Feed material size: 100 μm to 5 mm (or wider).

• Final particle size: 100 nm or finer.

• Batch volume: 2x20 ml (or more).

• Rotation speed (rpm): 400 to 2000 (or wider); continuously variable.

• Temperature control: Controlled integrated water cooling using external chiller. It should ensure continuous operation of the machine without overheating of the sample.

• Grinding jars: Stainless steel and tungsten carbide with integrated safety closure mechanism.

• Jar size: 50ml + 125 ml (for stainless steel); 50 ml (for tungsten carbide).

• Grinding time: 1 min to 50 hr (or more), with operational direction reversal.

• Grinding balls:

      For Stainless steel grinding jar- 50 ml & 125 ml volumes
       → 5 mm Stainless steel grinding balls
       → 10 mm Stainless steel grinding balls

      For Tungsten carbide grinding jars -50 ml
       → 3 mm Tungsten carbide grinding balls
       → 5 mm Tungsten carbide grinding balls
       → 10 mm Tungsten carbide grinding balls

Specifications of Planetary ball mill:

• Principle: Energy transfer from ball to material- both by friction and impact.

• Applications: Planetary ball mill is for grinding, mechanical alloying, mixing soft, medium hard, extremely hard, brittle, fibrous and colloidal systems, Industrial waste material, minerals, alloys, oxides, soils and plant materials.

• Feeding materials: Samples can be both dry and wet.

• Material feed size: 100 μm to 10 mm (or wider).

• Final size: less than 1 μm (or lesser); in the case of colloidal system- less than 0.1 μm.

• Wheel speed: 100 to 600 rpm (or wider); continuously variable.

• Diameter: Effective diameter with planetary motion-140 mm or more.

• Time of grinding: 1 min to 50 hrs (or wider) with direction reversible option; continuously variable.

• Material of grinding: Stainless steel and tungsten carbide. Stainless steel jars of 50 ml and 125 ml; Tungsten carbide jars of 50 ml and 125 ml. Aeration lid for 50 ml jar.

• Grinding balls:

      For Stainless steel grinding jar
       → 5 mm Stainless steel grinding balls
       → 10 mm Stainless steel grinding balls

      For Tungsten carbide grinding jars
       → 5 mm Tungsten carbide grinding balls
       → 10 mm Tungsten carbide grinding balls