The newly constructed refractory cement should be baked after 72 hours. Under the premise of poor ventilation, moisture can not be easily removed, the heat preservation time should be moderately extended. Room temperature of 350 degrees stage, should be baked slowly, otherwise it will lead to sheet cracking. If there is still a review of steam after 350 degrees heat preservation, in order to prevent the emergence of sudden, should slow down the rate of heating.

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