Laboratory and Pilot-scale Refining Investigation

Execution of refiner trials at mills is often difficult without disrupting normal production. Moreover, it is very expensive to undertake such a trial in terms of hardware requirements and machine time. Traditionally, studies to evaluate the impact of refining on pulp quality have been undertaken in the laboratory using the PFI mill (Welch and Kerekes, 1994). This type of study provides little information in terms of defining the optimal refining parameters 

CC Consistency Controller, CT Consistency Transmitter, CV Control Valve DCV Dilution Control Valve, FC Flow Controller, FT Flow Transmitter GM Refiner Gear Motor, 1C Interlock Controller, M Refiner Drive Motor 

PC Preeeure Controller, PI Pressure Indicator, PM Pump Motor, PRCIII Proportional Controller SP Stand Pipe, Tl Temperature Indicator, VFD Variable-frequency Drive 

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