Pulverized Coal Injection

Pulverized Coal Injection

Pulverized coal injection is widely used in blast furnace and metallurgical processes to reduce coke consumption and improve process economics. The particle size distribution of injected coal strongly affects conveying behaviour, combustion efficiency, burnout rate, and furnace stability.

Coal properties can vary significantly depending on source, moisture, volatile matter, ash content, and hardness. These variations can affect grinding performance and the consistency of the pulverized coal supplied to the injection system.

Traditional PCI quality control often relies on manual sampling and laboratory sieve analysis. Because these measurements are intermittent, operators may not detect changes in coal fineness until after process performance has already been affected.

Xoptix provides continuous real-time PSD measurement directly from the pulverized coal preparation process. This gives operators immediate visibility of coal fineness and supports faster operational decisions.

Correct particle size is essential for stable injection. Coal that is too coarse may not burn completely, reducing replacement efficiency and increasing process variability. Coal that is too fine may increase grinding energy and affect handling behaviour.

Real-time PSD monitoring helps maintain the optimum fineness window for injection performance. This supports better combustion, improved furnace efficiency, and more consistent operation.

The continuous measurement from Xoptix can also support automation and advanced control. Mill settings, classifier operation, feed rate, and airflow can be adjusted based on actual process conditions.

By improving control of pulverized coal fineness, PCI operators can reduce manual testing, improve combustion consistency, lower energy consumption, increase system reliability, and support more stable metallurgical performance.