Hot Blast Stoves - Inverted Catenary Shape, Enhanced Heat-resistant Metal Sheets, 30-year Continuous Operation, Advanced Refractory Design

We are essential company for Manufacturing, Exporting and Supplying of Hot Blast Stoves from Chennai, Tamil Nadu, India. The hot blast systems used by the global steel industry operate according to a regenerative heat-exchange process. The cyclic nature of this process imposes highly dynamic conditions on the refractory design. The tendency to move towards higher online hot-blast temperatures has made the refractory design even more critical because continuous operation at these high temperatures requires exceptional stability of the steel shell and refractories.
To meet the challenges of the cyclic nature of the process, Danieli Corus hot-blast stove technology features design details that enable secure, continuous operation during service over 30 years. The domes have an inverted catenary shape, which is statically stable. Cracks around the transition from ring wall to dome are prevented by implementing a freestanding dome that allows free vertical expansion of the ring wall. The internal partition wall has intermediate insulation layers to reduce thermal stresses caused by the steep temperature gradient between the burner side and the checkerwork side of the wall. Expansion allowance reduces mechanical stresses and heat-resistant metal sheets are applied to eliminate gas leaking. Inter-crystalline stress corrosion is prevented by applying a coating.