Patent ID: 11921025
Assignee: NIKON CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 6:
7. The slurry analysis system of claim 1 wherein the control system estimates the cake particle packing fraction of the slurry using the following formula:, ∅
    ⁢
    
     c
     2
    
   
   
    
     (
     
      1
      -
      
       ∅
       ⁢
       c
      
     
     )
    
    3
   
  
  =
  
   
    P
    
     S
     ⁢
     
      S
      v
      2
     
     ⁢
     μ
    
   
   ⁢
   
    dt
    dV
   
   ⁢
   
    1
    L
   
  
 

wherein (i) Øc is the cake particle packing fraction of the slurry; (ii), dt
  dV, is the inverse of the flow rate of the filtrate through the slurry filter; (iii) P is the slurry filtration pressure as measured by the pressure sensor; (iv) Sv is a particle surface area; (v) L is a cake thickness of a cake layer; and (vi) μ is a viscosity of the dispersion medium.