What this application covers
Coal blending yards manage quality variation by mixing coal from multiple seams, mines, or suppliers. The equipment scope includes stackers, reclaim feeders, conveyors, belt scales, sampling systems, online analyzers, and control logic. The goal is to meet target ash, sulfur, moisture, calorific value, and size distribution while keeping throughput stable.
Step by step
Source segregation
Coal grades are stockpiled separately to preserve quality information.
Controlled reclaim
Feeders withdraw material at controlled rates from each source.
Weighing and sampling
Belt scales and samplers confirm flow rate and quality.
Blend control
Control systems adjust feed rates to meet target specification.
Dispatch
Blended product is loaded to plant, rail, truck, or port systems.
Technical Buying Considerations
Blending equipment must be specified from quality data, not only capacity. Belt scale accuracy, feeder turndown, stockpile discipline, and sampling frequency determine whether the blend actually meets specification.