Sir,
I am frequently now a days facing the problem of abnormal heavy coating formation (About 300-350 mm thickness ) only on the nose ring area ( 0-0 to 0.8 Mtr ) .This i feel is creating the problem of high free cao and operation disturbances. We have castable with 60 % silicon carbide applied in this region. In addtion to the thickness of coating its extending outside by about 300 to 400 mm outside resulting in clinker falling a bit farther away. Chemical composition and sulphur alkali contents are within the limit. Can somebody throw more information on this??