Some parts of the two-stage gas generator are built with refractory materials, some need to be poured with refractory concrete, and some parts are heated water jackets. Therefore, before drying the oven, the operating points of the oven should be formulated first, and then the oven is carried out. The oven time is different in different situations:
       1. Gas generators without refractory materials and refractory concrete do not require an oven.
       2. For gas generators with refractory concrete roofs, the baking time is 1-3 days.
       3. Since the refractory materials for the two-stage gas generators are relatively large, it will take an extra day or two.
       4. For cold preparation furnaces, even if the amount of refractory materials is large, because they have been used before and the moisture content is very small, the residual shrinkage of the refractory bricks is close to 0, and the oven time can be shortened.
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