The firing of linings in converters made from tar-bonded refractories should be done with portion loading of coke in amounts of 200 kg, with careful control of the oxygen consumption. The temperature relationship with the rate of discharge of volatiles from the tar should be taken into account. The rational temperature cycle for firing tarred dolomite linings in converters is: raising the temperature to 300–350°C at a rate of 30–40 deg/min, from 300–350 to 700–800°C at a rate of 1.5–2.0 deg/min, and from 700–800° to 1000°C at a rate of 15–20 deg/min. The total firing time is 4.5 h, the coke consumption 2.8 ton, and the oxygen consumption about 4500 m3. The use of this cycle allows excellent preparation of the lining for service, practically excluding loss of brick due to spalling, and increasing the resistance of the lining.