Lightweight heat insulation castable is a kind of granular and powdery material made of refractory material with a certain amount of binder. It has high mobility, with high fluidity, it is suitable for unshaped refractory formed by pouring. Lightweight heat insulation castable is easy to construct, strong cohesive force, long initial setting time and construction operation time, fast strength growth, strong impermeability, no need for acidification treatment, easy to ensure the compaction of masonry ash joints, can significantly improve the air tightness of the chimney lining wall, integrity and the acid anti-corrosion ability of the lining.
Lightweight heat insulation castable in use, can be mixed by dry after wet mixing with water can be. The amount of water added to the refractory castable also needs to be strictly controlled. The amount of water added is directly related to the performance and strength of the castable. Therefore, it is necessary to pay attention to adding water to the mixed water according to the construction instructions. This series of refractory castables can be used either as acid-resistant castables or as refractory castables without heat insulation layer. The main component of the binder for lightweight acid-resistant castable is water glass. But some requirements use different parts, also use phosphoric acid combination, with phosphoric acid combination of acid castable calcium content is low.
Due to the large porosity of lightweight aggregate structure, rough surface, particle size of about 5mm, aggregate and powder water absorption rate and hygroscopicity, so according to the mix ratio after mixing poor fluidity, small coefficient of thermal conductivity, small coefficient of linear expansion and other characteristics, can also be used in the lining of the blast furnace filler.
The above is our introduction to lightweight heat insulation castable, our factory specializes in the production of non-stick aluminum castable, low cement castable, high aluminum castable, steel fiber castable, lightweight castable, refractory castable, wear-resistant castable and so on. Rongsheng refractory material has developed aluminum silicate series, siliceous series, basic series, light insulation brick series and other finalizing products and castable materials for coking, building materials, steel, nonferrous metal, electric power industries.
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