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Process Unit Operations

Particle Sizing Systems

Reducing or enlarging the size of the particles in your product, feed or recycle requires an integrator who understands particle-size distribution and can help you select the best equipment for your processing goals. The degree of agglomeration or aggregation in the distribution of your process stream determine how you reach the bulk density goals. Bulk density is mainly determined by:

  • Particle density and occluded air
  • The amount of interstitial air between particulate
  • Moisture content
  • Flow
  • Solubility
  • Wettability
  • Dispersibility

Most of these factors are affected by both the properties of the material being handled and the equipment chosen, which is why particle sizing systems selection by an experienced process engineer is important. Contact an engineer today to start specifying your sizing system.

Reduction Equipment

REDUCTION EQUIPMENT:

Key considerations when choosing a reduction method and matching equipment include:

  • Single-particle fracture
  • Grindability
  • Work index
  • Rate of breakage function
  • Hardness
  • Compressive strength
  • Flammability
  • Attainable product size and energy required

Reduction Equipment Options

  • Gryatory Crushers
    • Primary
    • Secondary
    • Cone
  • Jaw Crushers
    • Blake
    • Overhead eccentric
  • Heavy-Duty Impact Mills
    • Rotor breaks
    • Hammer mills
    • Roll crushers
  • Roll Crushers
    • Smooth rolls (double)
    • Toothed rolls (single & double)
    • Roll Press
  • Shredders
    • Toothed shredders
    • Cage disintegrators
    • Disk mills
  • Media Mills
    • Ball, pebble, rod & compartment mills:
      • Batch
      • Continuous
    • Autogenous tumbling mills
    • Stirred ball & bead mills
    • Vibratory mills
  • Medium Peripheral-Speed Mills
    • Ring-roll & bowl mills
    • Roll mills, cereal type
    • Roll mills, paint & rubber types
    • Buhrstones
  • Rotary Cutters & Dicers
  • Dry Pans & Chaser Mills
  • High-Peripheral-Speed Mills
    • Fine-grinding hammer mills
    • Pin mills
    • Colloid mills
    • Wood-pulp beaters
  • Fluid-Energy Superfine Mills
    • Centrifugal jet
    • Opposed jet
    • Jet with anvil
    • Fluidized-bed jet

Enlargement Equipment

Enlargement Equipment

Key considerations when choosing a reduction method and matching equipment include:

  • Agglomeration
    • Agitation
    • Compression
  • Agglomeration kinects
  • Granulation rate processes
  • Compact rate processes
  • Process vs. formulation design

Enlargement system design and equipment selection goes through several progressive levels of interaction analysis

  1. LEVEL 1: Examination of molecule for physicochemical interactions
  2. LEVEL 2: Kinetic mechanisms and rates for volume of fluid or powder
  3. LEVEL3: Mixing patterns and residence time distributions for the unit-operation vessel
  4. LEVEL 4: Process design & optimization for optimal plant performance

Enlargement Equipment Options

  • Tumbling Granulators
    • Drums
    • Discs
  • Mixer Granulators
    • Continuous high shear
      • (e.g. Shugi mixer)
    • Batch high shear
      • (paddle mixer)
  • Thermal Processes
    • Sintering
  • Fluidized Granulators
    • Fluidized beds
    • Spouted beds
    • Wurster coaters
  • Centrifugal Granulators
  • Spray Methods
    • Spray drying
    • Prilling
  • Pressure Compaction
    • Extrusion
    • Roll press
    • Tablet press
    • Molding press
    • Pellet mill
  • Liquid Systems
    • Immiscible wetting in mixers
    • Sol-gel processes
    • Pellet flocculation

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