High alumina refractory cement CA70

Packed in 25kg/bag, 40 bags/ wooden pallet.

Refractory cement CA-70A
Performance: with high content of CA mineral, high specific surface area ,high strength,high early strength.

Items	CA-70E			CA-70G		CA-70A
Refractoriness ºC	1650-1690
Chemical composition %
Al2O3	68-72
CaO max	30
SiO2 max	1.0
Fe2O3 max	0.7
Na2O+K2O max	0.4
S max	0.1
Specific density g/cm3	2.95-3.05			2.95-3.05		2.95-3.05
Specific surface area m2/kg min	600			600		600
Mortar performance
Initial setting time minutes min	30			30		30
Final setting time minutes max	360			360		360
Rupture strength Mpa
6 hr	3.0			-		-
24 hr	5.5			5.0		5.5
72 hr	6.5			6.0		6.5
Cold crushing strength Mpa
6 hr	15			-		-
24 hr	40			30		40
72 hr	50			40		50
Castable performance	corundum		Low cement	corundum	Low cement	corundum	Low cement
Water addition %	5.2		6.8	5.2	6.8	5.2	6.8
Flow value mm
Initial flow value	190	176		196	152	158	164
30 minutes	186	170		188	169	149	152
60 minutes	185	165		184	163	150	156
Cold crushing strength Mpa
24 hr room temperature	22	25		19	25	24	26
110ºC dry 24hr	90	115		76	120	91	120
1100ºC heating 6 hr	55	110		55	120	55	109