Abstract
A coal-blending model has been developed using relationships between coal and coke quality parameters. This coal-blending model gives a least-cost coal blend for the desired coal blend quality in terms of ash, volatile matter, mean maximum reflectance, and coke quality based on the coke strength and ash content. The model takes into account various constraints like coal availability, minimum and maximum permitted coal usage, etc. The model has been validated using actual plant data of coal drawn from different silos. The model is presently being used in plant as a process control tool. This model can also be used to evaluate a new coal or selection of a least-cost coal blend for a plant.
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