Classification of lightweight castables
Lightweight castable is a castable mixture made of lightweight refractory aggregate, powder, binder and admixture. Due to its small bulk density and low thermal conductivity, light castable can also be called heat insulation and fire-resistant castable, which mainly plays the role of fire resistance and heat preservation of kiln.
Semi lightweight refractory castable with bulk density of 1.0-1.8 g / cm3
Lightweight refractory castable with bulk density of 0.4 – 1.0 g / cm3
Ultra light refractory castable with bulk density less than 0.4 g / cm3
Classification by service temperature
Low temperature heat insulation (light) refractory castable, with service temperature of 600-900 ℃
Medium temperature heat insulation (light) refractory castable, with service temperature of 900 – 1200 ℃
High temperature heat insulation (light) refractory castable, with service temperature of ＞ 1200 ℃
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