Forecasting Coke Quality From mW Power Measurements Recorded During Plastic Layer Advance by a Sapozhnikov Plastometer
(Room 403)
16 May 16
10:30 AM
-
11:00 AM
Tracks:
Coke Plant Maintenance & Refractories, Coke Quality: Forecasting & Optimization
Power measurements have been made during plastic layer advance on more than 150 semi-cokes prepared by automated CKIC Sapozhnikov plastometer. Vitrinite-rich coals generate over 16 mW during testing, whereas coals with less vitrinite generate less than 2.5 mW power. The amount of work (W = FxD) done to develop these different responses is a function of vitrinite content, the ingredient in coal that melts, whereas variation in growth time during which the plastic layer pushes upward is a temperature melting-range function of rank. Power generation (P = W/T) at the plastic layer is a matrix of these two variables and is different from coal to coal. Semi-cokes that develop in a low-power environment of 2.5 mW or less produce cokes that have the highest CSRs, >70. Blends generate 1.5–5 mW over a Romax rank range of 1.15–1.25%, with higher CSRs generating less power.