supply of castable refractory for dtps, anpara , super cast able refractory ( brand name: prilcrete super or equivelant ) as per following specification: al203: 68-72%, cao: 5.2-6%, fe2o3: 4.8-5.5% max. service temp.: 14500 celsius max. grain size: 5 mm, water required for casting: 10-11% dry density: 2.50-2.65 g / cc, ( after drying at 1100 c / 24 hrs. ) , ccs:350-450 kg / cm2 ( after drying at 1100 c / 24 hrs. ) refractoriness, orton / 0c plc, % ( after heating at 11000 c / 3 hrs.: -0.30 to +0.30 ) ( after heating at 14000 c / 3 hrs.: -1.60 to +1.70 ) , castable refractory type a: as per following specifications: permanent liner changes at 15500c + / - 0.60% crushing strength in kg / cm3 at 1100c and cooled at ambient temperature: 300 minutes after heated at each of the following temperature for 3 hours and cooled at ambient temperature. ( i ) at 600 0c 200 minutes. ( ii ) at 1200 0c 210 minute. ( iii ) at 1600 0c 275 minutes service temperature 1750 0c pyrometric orton cone equivalent: at 180 0c 37 minutes bulk density after cast and dried at 110 0c and cooled to ambient temperature on kg / m3:2900 max. grain size 5mm max. chemical composition ( ferric oxide ) : 5% max.