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        Cement grinding installation sizing
           
      2   Non-exhaustive list of equipments to be sized
         2.2 List of the equipments (suite 2):
        - Item N°26:
          Airslide of the mill outlet to the elevator.
          This airslide is sized in the calculator.
        - Item N°27:
          Bucket elevator.
          A full presentation is available here:
          BUCKET ELEVATORS
          A small calculator was developed for sizing roughly a bucket elevator:
          BUCKET ELEVATORS SIZING
          This bucket elevator is sized into the main calculator.
        - Item N°28:
          Dust collection system of the bucket elevator.
          See presentation on this site:
          FILTERS
          There are also two calculators giving design elements:
          FILTERS CALCULATION
          This filter is dimensioned in the main calculator.
        - Item N°29:
          Mill separator.
          We consider only the third generation of separators.
          Let us recall the names of main separators and their supplier.
          * O'Sepa (FLSmidth)
          * Sepol (Polysius)
          * Sepax (FLSmidth)
          * SD (Sturtevant)
          * Sepmaster (KHD)
          * QDK (Pfeiffer)
          * TSV (FCB)
          * O&K (Orenstein & Koppel AG)
          * PRESEP VTP (PSP Engineering a.s.)
          * CTC SERIES (CEMTEC)
          Several presentations are available on the separators and the analysis their efficiency:
          SEPARATORS
          HIGH EFFICIENCY SEPARATORS
          CEMENT COOLING INTO THE SEPARATOR
          SAMPLING CAMPAIGN AROUND THE SEPARATOR
          TROMP CURVE EXPLANATION
          Il existe aussi un calculateur de dimensionnement:
          HIGH EFFICIENCY SEPARATORS SIZING
          Ainsi que des calculateurs d'analyse:
          TROMP CURVE
          LAGRANGE CORRECTION METHOD
          COOLING INTO THE SEPARATOR
          The sizing calculator is mostly concerned with quantifying the air required for separation.
          The calculator considers a separator without cyclones but with a great filter.
          This is of course the most important parameter.
          For the rest, one must see with the supplier.
        - Item N°30:
          Separator filter.
          This is a large bag filter.
          This filter is dimensioned in the main calculator.
        - Item N°31:
          Separator filter fan
          This fan is sized in the main calculator.
        - Item N°32:
          Impact flowmeter.
          This equipment is configured in the transport of rejects to the mill.
          The type is defined with a supplier of these devices.
          The design is not provided in this study.
        - Item N°33:
          Rejects airslide.
          This element is dimensioned in the main calculator.
        - Item N°34:
          Finished product airslide.
          This airslide is in two parts and is sized in the calculator.
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        - Item N°35:
          Conveyor of cement to the top of the storage silo.
          This may be a bucket elevator or an airlift.
          These equipments are not designed here.
        - Item N°36:
          Cement silo.
          A 7 days capacity of production is a valid basis for sizing a silo.
          This equipment will not be developed here.
        - Item N°37:
          Mill control.
          In most cases this will be an expert system.
          See the presentation on this topic:
          MILL CONTROL SYSTEMS
         2.3 Equipments not developed in this presentation:
        - Maintenance equipments
        - The compressed air system
        - Electrical systems
        - Other points of dedusting
           
      3   Flowsheet and list of main equipment of the main calculator
         3.1 Flowsheet:
        - This is a traditional system with a high efficiency separator.
        - The fines of separator are sent to a baghouse.
        - The mill has a separate ventilation system.
        - Flowsheet:
         
     
         3.2 List of equipment:
          1. Hoppers
          2. Weighfeeders
          3. Belt conveyor
          4. Filter the weighfeeders section
          5. Ball mill
          6. Filter mill
          7. Mill filter fan
          8. Mill water injection system
          9. Mill output airslide
          10. Bucket elevator
          11. Bucket elevator filter
          12. Airslide to separator
          13. Separator
          14. Separator filter
          15. Separator filter fan
          16. Impact flowmeter
          17. Airslide of rejects
          18. Airslide of finished product
          19. Mill Control
           
      4   Link to calculator
          GRINDING CIRCUIT SIZING
           
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