Direct Reduced Iron (DRI) production via rotary kilns subjects refractory linings to one of the most punishing combinations in industrial processing — continuous rotation, high abrasion from iron ore and coal charge, thermal cycling across the kiln length, and aggressive reducing atmospheres. Lining failure in a rotary kiln means unplanned shutdowns and significant production loss, making refractory selection critical.

Sharadaa’s Role Sharadaa’s dense castables and gunning repair mixes for DRI rotary kilns are formulated to withstand the constant mechanical wear of tumbling raw material, maintain structural integrity under reducing gas conditions, and resist the thermal gradients between the feed end and discharge end of the kiln. The combination of a high-performance primary lining (REFCAST A / REFCAST K) with a fast-turnaround gunning repair solution (VELGUN L 401 SC) ensures both long campaign life and minimal downtime during maintenance shutdowns.