Common Refractory Castable Introduction

Refractory castable is one of the most widely used and produced amorphous refractory materials, which are commonly used as high strength and abrasion resistant castable, clay castable, light castable and heavy castable. Refractory castable is the main type of unshaped refractory, in the construction project to check whether the mold is good, pouring the good castable mix into the mold, the specific mold removal time is determined by the site, the following is a detailed introduction of the relevant content.

According to the characteristics of the points: high strength wear resistant castable, high temperature resistant castable, low cement castable, steel fiber castable, acid resistant heat resistant castable and other castable characteristics. According to the refractory raw materials to be divided: clay castable, high aluminum castable, silicon castable, mullite castable, corundum castable, silicon carbide castable, etc. According to the applicable environment of industrial kiln: aluminum silicon carbide castable for ladle casting, aluminum magnesium spinel castable for ladle casting, etc. According to the density: light castable and heavy castable. According to the composition of the binder: organic combined castable and inorganic combined castable, such as resin combined castable, cement combined castable.

Refractory Castable Construction Works

1. Check: check whether the mold is well supported, there are no gaps or deviations, and clean up the debris in the mold, whether the anchorage parts (heat-resistant stainless steel palladium nails) are soldered firmly, and whether the anchorage parts are coated with paint or wrapped in plastic bags to buffer the expansion force after heating.

2. Pouring: pour the mixed castable into the mold, insert the vibrator to vibrate, move the vibrator at a uniform speed, and pull out slowly.

3. If the casting area is too large, it can be layered and divided into different parts for pouring and cross-operation. Wall layer pouring, each pouring 900mm or so, the furnace top split pouring, finally lifting.

4. Maintenance and mold removal: the ambient temperature is >20℃, and the mold can be removed after 4H; <20℃, and the mold can be removed after 6-7h. If the local edges and corners are damaged, the mold can be repaired.

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