The product has the following characteristics:
 (1) low thermal expansion rate, spalling resistance strong, good thermal shock resistance;
 (2) excellent resistance to alkali clinker liquid erosion;
 (3) strong abrasion resistance;
 (4) construction mixed material with good workability, not segregation, construction and good liquidity;
 (5) the construction time under 30 minutes hardening time controlled within 8 hours. 

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