We have been in the market of cement clinker, gbfs, ggbfs, slag cement for years and our rich experience will surely provide you the best price and service.

Ggbfs - ground granulated blast furnace slag is one of our main products.

Standard: As per Chinese standard: GB/t18046 s95 China

Specifications as followed:

A. Physical properties & strength:
1. Fineness-blaine = 400-420(min. )
2. Initial setting time = 45 minutes (min. )
3. Soundness, le-chatelier expansion = 10.00 mm (max. )
4. Mortar compressive strength, 28 days = 52.5 mpa
B. Chemical compositon:
1. Magnesia (MGO) = 14% (max. )
2. Sulphur (s) = 1.5% (max. )
3. Sulphate (so3) = 4.0% (max. )
4. Loss on ignition (loi) = 3.0% (max. )
5. Chloride ion content = 0.02% (max. )
6. Chemical modulus
Cao+MGO+sio2 = 67% (min. )
(cao+MGO)/sio2 = 1.0 (min. )
Cao/sio2 = 1.4 (max. )
7. Moisture content = 1.0% (max. )
C. Glass content = 90% (min. )