| 摘要 |
Continuous casting of steel strip by solidification of casting poo (68) onto chilled cooling rolls (16) of a twin roll caster. Steel is delivered to casting pool (68) by a refractory delivery nozzle (19) which dips into the casting pool. The refractory material of nozzle (19) contains a significant quantity of chemical compounds contains sulphur, such as molybdenum disulphide (MoS2), magnesium sulphide (MgS) and calcium sulphate (CaSO4).
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