Multi Mill

Multi Mill – Technical Specification & Application in the Pharmaceutical Industry

Multi Mill is a multi-purpose processing machine used in pharmaceuticals for size reduction, granulation, pulverization, and blending of powders and granules. It is based on the principle of variable force impact and cutting, achieving size reduction without excessive heat generation, which is best suited for temperature-sensitive products.

Technical Specifications of Multi Mill

1. The construction material

• • Stainless Steel (SS 316L for parts in contact, SS 304 for non-contact parts) – maintains GMP & FDA regulations.
  • Mirror or Matte Finish – prevents contamination and makes easy cleaning possible.
  • Dust-Tight Seals – maintains fine powder containment.

2. Rotor & Blades

• • Rotor Speed: 750–3000 RPM, adjustable according to different materials.
  • Blade Types: Knife-edge and impact blades, optimized for effective size reduction.
  • Interchangeable Screens: In sizes 0.25 mm to 12 mm, enabling varying particle sizes.

3. Feed & Discharge System

• • Gravity or Vacuum Feeding System – for regulated material feed.
  • Bottom Discharge with Collection Hopper or Vacuum Transfer System – for effective material flow.
  • Feeding Mechanism: Manual or automatic feed with screw conveyor facility.

4. Drive System

• • Motor Power: 1 HP to 10 HP, based on processing capacity.
  • Gear & Belt Drive Mechanism – smooth operation.
  • Variable Frequency Drive (VFD) (Optional): Speed adjustment for various applications.

5. Safety Features

• • Overload Protection – motor protection against damage.
  • Interlocking Mechanism – machine halt when cover is open.
  • Earthing & Static Charge Protection – operator safety.

6. Capacity & Output

• • Batch Size: From 10 kg/hr to 2000 kg/hr, as per model.
  • Particle Size Reduction: 50 microns to 5 mm, depending on screen selection.

Applications of Multi Mill in the Pharmaceutical Industry

• Powder Granulation: Transforms powder into granules of uniform size for compression into tablets and filling into capsules.
• Wet & Dry Granule Size Reduction: Breaks lumps and agglomerates following fluid bed drying. Ensures even granule size for uniform drug formulation.
• Pulverization of Heat-Sensitive Product: Appropriate for herbal extracts, APIs, and excipients that do not degrade with heat.
• Mixing & Homogenization: Ensures even mixing of pharmaceutical powders and granules.
• Reclaiming & Reprocessing: Utilized in reprocessing of rejected tablets through size reduction for reuse.
• Applications across industries: Additionally utilized across food, chemical, nutraceutical, and cosmetic industries for size reduction and granulation.