According to the relevant data of Baidu question bank, the lining of heating furnace is as follows:

1. All parts of the heating furnace have passed the construction acceptance.

2. Refractory castable shall be cured with water as required.

3. The furnace wall should be naturally ventilated and dried at ambient temperature (25 ~ 40℃) for at least 72 hours (other measures should be considered to replace natural ventilation and drying in low temperature or wet rainy season).

4. The fuel gas system has purging and replacement conditions and gas supply conditions.

5. The induced draft fan and blower have been checked and accepted.

6. Through the joint inspection of full-time personnel such as equipment, process, instrument and electricity, it is determined that the oven conditions are met.