Produced by industrial alumina and high purity burnt lime from advanced rotary kiln sintering process and high fine grinding system with reasonable design of cement phase and accurate control of sintering process and particle size distribution, calcium aluminate cement has good workability, excellent performance at high temperature and maximum consistency.
CA70 and CA70W do not contain any additives and ɑ-Al2O3. CA70 has moderate setting times and strength development; while CA70W has short setting times and higher early strength fitting for low temperature environment especially for wintertime and other urgent occasion such as rapid installation or emergency maintenance etc.

CA70S has good fluidity and long workable time; the castables made by this product have good workability and excellent mechanical strength, especially fit for being used in high temperature environment or hot summer.
CA71 does not contain any additives and ɑ-Al2O3,with higher alumina content,lower demand for water, excellent flowability, and high strength development,is quite suitable for low cement castables, low moisture castable& ultra-low cement castables.

Applications:
a.) low water, low cement refractory castable, unshaped bulk refractory materials
b.) chemical industry, metallurgical industry, building material, petroleum industry, ceramic industry etc.
Product CA70 CA70W CA70S CA71
Setting time comparison Moderate Short Longer Long
Properties Determined according to GB201-2000
Chemical Composition (%)
SiO2 ≤0.5 ≤0.5 ≤0.5 ≤0.5
Al2O3 68.5-70.5 68.5-70.5 68.5-70.5 69.5-71.5
Fe2O3 ≤0.2 ≤0.2 ≤0.2 ≤0.2
CaO 28.5-30.5 28.5-30.5 28.5-30.5 27.5-29.5
MgO ≤0.4 ≤0.4 ≤0.4 ≤0.4
R2O ≤0.4 ≤0.4 ≤0.4 ≤0.4
Fineness
d50（μm） 11-14 8-11 6-9 10-13
-45μm（%） ≤8.0 ≤5.0 ≤5.0 ≤8.0
Setting Time (min)
IS 120-180 30-90 180-240 150-210
FS 150-240 90-180 240-330 210-300
Strength (ISO) (MPa)
Flexuralstrength (1d) 7.5-10.0 8.0-10.5 8.0-10.5 8.5-11.0
Flexuralstrength(3d) 10.0-12.0 10.5-12.5 10.5-12.5 11.0-12.5
Compressive strength (1d) 40-50 45-55 45-55 50-60
Compressive strength (3d) 45-55 50-60 50-60 55-65
Testing Properties in Castables
Setting Time (min)
20℃ 60-90 30-60 240-300 90-120
35℃ 30-50 20-40 60-120 60-90
Vibration Flow (mm) (20°C)
Initial flow 265-275 250-260 270-280 270-280
10min F10 255-265 245-255 260-270 260-270
30min F30 235-245 235-245 245-255 245-255
60min F60 230-240 210-220 235-245 235-245
Flexural Strength (MPa)
20℃×24h 4.5-5.5 4.5-5.5 4.5-5.5 4.5-5.5
110℃×24h 10.0-11.5 10.0-11.5 10.0-11.5 10.0-11.5
1100℃×4h 12.0-14.0 12.0-14.0 12.0-14.0 12.0-14.0
Compressive Strength (MPa)
20℃×24h 35-45 35-45 35-45 35-45
110℃×24h 85-95 85-95 85-95 85-95
1100℃×4h 100-120 100-120 100-120 100-120
Linear Change (%)
1100℃×4h ≤-0.25 ≤-0.25 ≤-0.25 ≤-0.25

Packing:
1000kg big bags
Big bag on pallets
25kg woven bag in big bags
25kg small bag on pallets Refractory Caicium Aluminate Cement price
website:http://www.abrasives-tw.com/refractory-cement/refractory-caicium-aluminate-cement/