Petrochemical

The cracking furnace radiant section runs long campaigns at high temperature; low-cement corundum-mullite castables are the mainstream lining.

FCC regenerator and cyclone linings are eroded by high-velocity catalyst; two-layer linings and hexmesh structures are key.

Gasifier chambers face high-temperature slag attack; high-purity chrome-corundum bricks and quench-chamber linings set campaign length.