Tarred magnesite refractories for oxygen converters

Conclusions A technology was developed for producing tarred magnesite refractories for lining steel converters. The average monthly life of the lining of the converters at the ZSMZ was increased to 624 heats (August 1970) with a maximum life of 662 heats.The tarred magnesite refractories based on MDPK-75 powder possess excellent resistance to hydration and have a high strength. Considering these facts and also in view of the high capacity of the refractories division of ZSMZ it is possible to transport tarred magnesite products over appreciable distances and to deliver them to converters in newly constructed factories.The outstanding feature of tarred magnesite refractories is their slight tendency to slagging, in connection with which the life of the tarred magnesite linings largely depends on the daily output of the converters. To reduce the consumption of refractories in each converter at the ZSMZ it is necessary to arrange more than 30 heats per day during the entire campaign period.Translated from Ogneupory, No. 1, pp. 4–9, January, 1971.