GRES , L.; GUPALO , O.; YEROMIN , O.; KARPENKO , S.; SAMOILENKO , T.; KARAKASH , Y. NATURAL GAS ECONOMY IN THE PROCESS OF AIR HEATING IN THE HOT -BLAST STOVES. Scientific Journal "Metallurgy", n. 2(42), p. 63-71, 1 Mar. 2020.