Refractory cement Secar 71 castable binder high temperature resistant
Refractory cement Secar 71
General Characteristics of Refractory cement Secar 71
SECAR® 71 is a versatile hydraulic binder with an alumina content of approximately 70%, which is designed to be used at temperatures in excess of1400°C.
SECAR® 71, a pure cement manufactured by the sintering process, contains only calcium aluminates. The high calcium aluminate content provides characteristics ideally suited for refractory applications where rapid hardening combined with excellent mechanical resistance and high temperature performance are required.
Using SECAR® 71 as a refractory cement normally finds it as the primary binder in mortars and concretes exposed to refractory temperatures. SECAR® 71 is preferred by many for high duty refractory concretes due to a very low iron oxide content of approximately 0.1%.
SECAR® 71 is the reference product for high technology deflocculated castable systems such as LCC, ULCC, shotcrete and pumpable refractories. Its controlled mineralogy gives the formulator great flexibility in castable design and also gives good compatibility with micro silica.
Specifications of Refractory cement Secar 71
Chemical constituents (% by XRF chemistry) |
Al2O3 | CaO | SiO2 | Fe2O3 |
≥68.5 | ≥ 31.0 | ≥ 0.8 | ≥ 0.4 |
Blaine fineness: 3700-4500 cm2/g (ASTM C204)
Physical Properties (using EN-196 sand mortar)
Flow at 30 min: 60% (ASTM C1437)
Vicat Initial Set: 175 min.
Vicat Final Set: 290 min
Modified ASTM C191 - Needle weight is 1000g, needle diameter
is 1.16 mm, samples immersed in water.
Compressive strength (ASTM C349)
6 hr 1250 psi (8.6 MPa)
24 hr 4600 psi (31.7 MPa)
CH Refractories is cooperating with Chinese Secar agent, can supply you Secar cement with competitive price. If you need Secar cement, welcome to ask price.
Packaging & Shelf Life
SECAR® 71 is available palletized in 50 lb bags, 100 lb bags or 3000 lb. super sacks.
SECAR® 71 packaging is designed to protect it from humidity. However, as with all hydraulic binders, it is recommended that SECAR® 71 not be placed outdoors or in direct contact with the ground. When correctly stored in dry conditions, the properties of SECAR® 71
will remain within specification limit for at least 6 months. In most cases, its properties will be retained for over a year.
