The document discusses using a refractory coating called ESPON-RC to improve refractory lining life and reduce energy costs for furnace operations. It claims ESPON-RC can 1) extend refractory lining life from 21 months to 12 months, 2) save 38 liters of fuel per ton annually, and 3) reduce annual furnace costs by Rs. 16,00,000 in one case study. A second case study found monthly fuel savings of 900 liters using this coating. The document promotes ESPON-RC as a way for furnace operators to improve profits by lowering refractory maintenance costs and fuel consumption.