What this application covers
Coal moisture affects handling, shipping cost, dust, combustion efficiency, and product quality. Moisture control may include mechanical dewatering, centrifuges, filter presses, thermal dryers, drainage stockpiles, and moisture monitoring. Equipment selection depends on coal size fraction, required final moisture, energy cost, emission rules, and whether the product is thermal coal, metallurgical coal, or plant feed.
Step by step
Sizing
Coal is separated into fractions suited to different dewatering methods.
Mechanical dewatering
Screens, centrifuges, or filters remove free water.
Thermal drying if needed
Dryers reduce residual moisture where mechanical methods are insufficient.
Moisture monitoring
Online or lab checks verify product specification.
Storage and handling
Stockpile drainage and covers prevent moisture regain.
Technical Buying Considerations
Mechanical dewatering is usually preferred before any thermal drying because it removes water at much lower energy cost. Thermal dryers require careful review of dust, emissions, and fire risk.