METHOD OF APPLICATION OF SLAG LINING Russian patent published in 2001 - IPC

FIELD: ferrous metallurgy; method of hot repair of converter lining. SUBSTANCE: in applying the slag lining, slag-forming materials containing Ca and Mg are introduced in succession on slag remaining in converter after previous heat at two stages. At first stage, Ca-containing materials are added and slag melt thus obtained is mixed by mixture of neutral gas with oxygen at ratio of 1(0.05-0.15). At second stage, Mg- containing materials in the amount of 20 to 50% of mass of Ca-containing materials added at first stage are added and Mg-containing materials are mixed with slag melt by neutral gas. Ratio of mixing time at first stage to mixing time at second stage is maintained within 1:(1.3-1.5). Then, slag melt is applied on lining by jets of neutral gas. EFFECT: enhanced efficiency and stability. 1 tbl, 1 ex