Welcome to DJB Consultants Inc.

Comminution Circuit Cost Estimates:

Estimation of Operating Cost Parameters

Preliminary OPEX (Crushing &Grinding)

  • DEVELOPMENT OF SPECIFIC power consumption (kWh/t) FOR CRUSHING, PRIMARY & SECONDARY MILLING, AND TOTAL BY SAMPLE OR UGM.
  • DEVELOPMENT OF BALL WEAR RATES (g/kWh) FOR PRIMARY & SECONDARY MILLING, AND TOTAL BY SAMPLE OR UGM FROM BOND Ai MEASUREMENTS AND DJB’s IN-HOUSE EMPIRICAL EQUATIONS.
  • CALCULATION OF LINER, WEAR RATES (g/kWh) FOR CRUSHING, PRIMARY & SECONDARY MILLING, HPGR, AND TOTAL BY SAMPLE OR UGM FROM BOND Ai MEASUREMENTS AND DJB’s IN-HOUSE EMPIRICAL EQUATIONS.
  • ADD ALLOWANCES AS PERCENTAGES FOR OPERATING & MAINTENANCE LABOUR.

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