On-site construction of refractory castables often encounters low ambient temperatures. For cement-containing refractory castables, this will result in a decrease in the hydration rate of the cement and insufficient hydration. It is difficult for the castable lining to reach the desired initial strength within the specified time, resulting in prolonged demolding time and affecting the construction period and quality of the construction. When the ambient temperature is below zero, the castable is also in danger of freezing and freezing. After the castable is frozen, it not only fails to harden normally, but also adversely affects the construction structure. Therefore, the refractory castables are constructed in winter. It is usually necessary to set up a warm shed at the construction site, and adopt a heating method such as furnace heating and electric heating to create a positive temperature environment. At the same time, it is necessary to heat the stirring water and do the material insulation measures.