Plastic mud or mud. When the appropriate external force is applied, it is easy to deform without cracking; After the stress is removed, it will not deform anymore. Plastic materials include semi-silica, clay, high alumina, zircon, carbon, etc., As well as lightweight plastics. Plastics must be added with plasticizing materials, most of which are high plasticity clays, and plasticizers can also be used to improve the plasticity of this clay. Plasticizers include carboxymethyl cellulose, dextrin, lignosulfonate and the like. The binders used for plastics include plastic clay, phosphoric acid, aluminum dihydrogen phosphate, aluminum sulfate, and the like. Alumina plastics with phosphoric acid or phosphate binders will chemically react with alumina during storage to generate insoluble aluminum orthophosphate and harden the mud, so preservatives such as oxalic acid, citric acid, acetyl acetone etc.
The construction method generally adopts the ramming method or the vibration method. When building an integral furnace lining with plastic, metal or ceramic anchors must be provided. Plastics can be used as the lining of thermal equipment such as soaking furnaces, heating furnaces, boilers, etc., and also used to wrap the water cooling pipes of heating furnaces.
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