Plastic is one of the important varieties of amorphous refractory materials, which developed early, has a wide range of types, is widely used, and has good usage effects.

Plastic is different from ordinary refractory castables, and refractory plastic generally uses composite binders. The preparation process of plastic is usually carried out by

mixing, degassing, and stacking into strips. Then, it is cut or stacked into blocks, cakes, or other necessary shapes, sealed and stored for use. Some also use other

densification methods, such as shaking and compaction, to make blocks.

Plastic does not require special techniques during construction. When used to make furnace lining, plastic can be taken out of a sealed container and placed between

hangingbricks or hooks. It can be compacted in layers (50-70mm per layer) with a wooden hammer or air hammer to create the desired shape. When the plastic is still

hardened, use a repair tool to cut off the excess material squeezed out in real time, trim the appearance, and perform surface processing. After repair, in order to

facilitate the removal of moisture, air holes should be drilled at regular intervals. Leave expansion and contraction joints according to the design. If used for making

an integral furnace cover, it can be constructed on the bottom mold first, dried, and then lifted.

Plastic is particularly suitable for various heating furnaces, soaking pits, annealing furnaces, hot blast furnaces, sintering furnaces, etc. in the steel industry. It can also be used for

the cover of cement Rotary kiln, small electric arc furnace, nozzle of high temperature furnace and other similar parts. The temperature of use mainly varies depending on the

quality of granular and powdered materials used. Ordinary clay materials can be used at temperatures ranging from 1300 to 1400 ℃; High quality materials can be used at

temperatures ranging from 1400 to 1500 ℃;