关键词: 200 t铁包, 延长包龄, 恶劣包况, 管控, 拆包残厚

Abstract: The various adverse factors affecting the campaign life of a 200 t ladle in Jingtang Company were analyzed.The life of the ladle was increased from 240 heats to 260 heats by stabilizing the turnover,specifying return steel operation,controlling KR desulfurizer composition and desulfurization slag iron moisture,etc.After 260 heats,the ladle was removed,the residual thickness of refractories in the working area was still higher than the removal standard.The practical application results show that:only by reducing the influence of external adverse factors and the probability of abnormal corrosion to refractories can extend the campaign life.

Key words: 200 t ladle, ladle campaign life prolongation, severe ladle working conditions, control, residual thickness of used ladles