Clogging in Continuous Casting Nozzles

Nozzle clogging is a serious productivity and qua lity problem in continuous casting. This work reviews the causes, effects, and solutions to cloggi ng in continuous casting nozzles. The results of a one-dimensional, steady state analysis of the heat loss from the molten steel stream through the nozzle wall are discussed. The analyses show that steel may freeze within the clog matrix for a relatively small clog buildup. The implication of this result on the mechanism of clog growth and on clogging mitigation techniques is discussed.

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