Maintenance of Refractory Castable

Maintenance is one of the key elements that harm the performance indicators of refractory castables, and it is an element that is easily overlooked. Maintenance is to give the fusion agent in the refractory castable one time for setting and hardening, and then to obtain sufficient early compressive strength. Maintenance rules and regulations are related to the type of fusion agent for refractory castables. High-alumina cement solidifies faster, the heat of hydration after forming is mostly released within h, the heating value is concentrated, the internal heat is not easily released, and it is also necessary for the concrete near the surface to solidify. The volatilization of water prevents it from solidifying again, and it is also easy to destroy the refractory castable itself caused by thermal stress. Therefore, maintenance should be carried out immediately after the construction of the refractory castable project. It is decided whether to dismantle the mold according to the detailed situation. During maintenance, the surface of the refractory castable can be covered with wet hemp bales or wet mats and immediately sprinkled with water to maintain moisture.