low thermal conductivity and heat storage,excellent thermal stability and thermal shock resistance and erosiion resistance Parameter DenominationMortar MSK-34Mass percent,% AL2O3 not less39SiO2--Fe2O3, not more1.8Na2CO3, within limits0.120.18Lignosufonate (CT), within limits,0.070.13Mass change while burning, within limits%,1.33.2Refractoriness, , not less1730Moisture mass percent, % not ...