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Phosphate bonded fire-resisting casting material
Phosphate bonded fire-resisting casting material is a high-quality Casting material that uses high-quality high-alumina bauxite as the main raw material, adds ultrafine powder, and uses a phosphoric acid solution as a binder. According to the performance physical and chemical indicators, it is divided into three grades: LL-75, LL-60 and LL-45.
Physical and chemical indicators:
|Al2O3 % ≥||75||60||45|
|Refractory ℃ ≥||1780||1740||1700|
|Test temperature at which the linear change rate after burning is not more than ± 1%（Insulation3h） ℃||1500||1450||1350|
|Compressive strength at room temperature（110 ℃×24h） Mpa ≥||30||25||20|
|Flexural strength at room temperature（110 ℃×24h） Mpa ≥||5||4||3.5|