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SIZE ENLARGEMENT, DEFINATION - Coggle Diagram

- - - - PROCESS WHICH AIR WITHIN THE VOIDS BETWEEN PARTICLES IS REPLACED BY LIQUIDS.
        
        GOVERNED BY THE SURFACE TENSION OF THE LIQUID AND THE CONTACT ANGLE IT FORMS BETWEEN THE MATERIALS OF THE PARTICLES
    - - THE INCREASE IN GRANULE DENSITY CAUSED BY CLOSER PACKING OF PRIMARY PARTICLES AS LIQUID IS SQUEEZED OUT AS A RESULTS OF COLLISIONS
        
        CAN ONLY OCCUR WHILST THE BINDER IS STILL IN LIQUID
        
        DETERMINES THE POROSITY AND DENSITY OF THE FINAL GRANULES
        
        FACTOR AFFECTING THE RATE AND DEGREE ARE PARTICLE SIZE,SIZE DISTRIBUTION AND BINDER VISCOSITY
    - - BREAKAGE MECHANISM:
        
        SHATTERING
        
        FRAGMENTATION
        
        WEAR
        
        SHATTERING : THE COMPLETE BREAKUP OF PRIMARY GRANULES TO THEIR COMPONENT PRIMARY PARTICLE
        
        FRAGMENTATION : THE FRACTURE OF A GRANULE TO FORM TWO OR MORE PIECES
        
        WEAR (ATTRITION/EROSION) : THE REDUCTION IN SIZE OF A GRANULE BY LOSS OF PRIMARY PARTICLES FROM ITS SURFACE
      - 1) MAY BE CONTROLLED BY ALTERING THE GRANULE PROPERTIES
        
        INCREASE FRACTURE TOUGHNESS
        
        INCREASE RESISTANCE TO ATTRITION
        2) MAY BE CONTROLLED BY MAKING CHANGES TO THE PROCESS
        
        REDUCE AGITATION INTENSITY
    - - GROWTH MECHANISM : 1) NUCLEATION 2)COALESCENCE 3)LAYERING/COATING
        
        NUCLEATION : INITIAL PROCESS OF COMBINATION OF PRIMARY SOLID PARTICLE INTO A LIQUID DROP TO FORM PRIMARY GRANULE OR NUCLEI
        COALESCENCE : THE JOINING TOGETHER OF THESE PRIMARY GRANULES TO FORM LARGER GRANULES
        LAYERING : THE ADDITION OF PRIMARY PARTICLES TO PRIMARY OR LARGER GRANULES IN LAYERS
  - - - OPERATE IN CONTINUOUS MODE AND ABLE TO DEAL WITH LARGE THROUGHPUTS
        
        ADVANTAGES : PRODUCT WITH A NARROW SIZE DISTRIBUTION
    - - OPERATE IN BATCH OR CONTINUOUS MODE
        
        ADVANTAGES :
        
        GOOD MASS & HEAT TRANSFER
        
        MECHANICAL SIMPLICITY
        
        ABILITY TO COMBINE THE DRYING STAGE WITH THE GRANULATION STAGE
        
        ABILITY TIPRODUCE SMALL GRANULES FROM THE POWDER FEEDS