GRANULATED BLAST FURNACE SLAG
Blast furnace slag is used in the production of cement (iron Portland and blast furnace cement).
Air-cooled blast furnace slag is formed by allowing the molten slag to cool relatively slowly under ambient conditions; final cooling can be accelerated with a water spray. The cooled material is hard and dense, although it can have a vesicular texture with closed pores. After crushing and screening, air-cooled slag can be used in several applications.
Granulated slag is formed by quenching molten slag in water to form sand-sized particles of glass. The disordered structure of this glass gives the material moderate hydraulic cementitious properties when very finely ground into granulated blast furnace slag, but if it can access free lime, the granulated blast furnace slag develops strong hydraulic cementitious properties.
Pelletized or expanded slag is cooled through a water jet, which leads to rapid steam generation and the development of innumerable vesicles within the slag. The vesicular texture reduces the overall density of the slag and allows for good mechanical binding with hydraulic cement paste.
Blast Furance Slag is a nonmetallic co-product which is produced in the process of iron manufacturing, Granulated Blast Furnace Slag is a glassy granular material formed when molten blast furnace slag is rapidly cooled by direct water.
Rapid cooling prohibits the formation of crystals and forms glassy, non-metallic, silicates and alumino silicates of calcium.
GRANULATED BLAST FURNACE SLAG
SOURCE : KUTCH, INDIA
SUPPLY QUANTITY : 50,000 METRIC TONS PER MONTH
PACKING: BULK
Specifications of GRANULATED BLAST FURNACE SLAG Powder
| PARAMETERS | (% BY MASS) |
| CaO | 30-38 |
| Al2O3 | 15-20 |
| SiO2 | 30-40 |
| GLASS CONTENT | 85-97 |
| MgO | 8-11 |
| Fe2O3 | 0.5-1.5 |
| MOISTURE | 10 MAX |
| SIZE | -5mm Min 95, +5 mm Max 5 |
| RELATIVE GRAVITY | 2.9 |
| BULK DENSITY(BAGGED) | 1200 KG/M3 |
ADVANTAGES OF BLAST FURNACE SLAG BASED CEMENT :
- High ultimate strength of concrete
- Highest degree of durability of concrete
- Substantial improvement in the durability of concrete structures
- High compressive strength which even surpasses OPC 53 grade strength requirement
- Low heat of hydration which ensures minimal thermal cracks
- Increased workability of concrete mix makes concrete cement impermeable and thereby more resistant to atmospheric pollutants
- Optimum range of workability with enhanced mixability, mobility, compactability and finishibility by advantaging higher degree of fineness in cement particles and by uniform particle size distribution
- Low alkali content - reduces the susceptibility to alkali aggregate reaction
- Optimum setting time with high compressive strength
- Protect steel bars in the concrete corrosion give self compacting concrete mix with a lower water cement ratio of chemical contact
ENVIRONMENTAL PERFORMANCE OF BF SLAGS :
- Effective utilization of by-products
- Energy saving
- Saving in virgin raw material
- Reduction in green house gas
EXPORT OF MATERIAL
We source the GBFS from our State of Gujarat in India, we have 2 major sea ports available for exports Kandla & Mundra, we can export Blast Furnace Granulated Slag from these two major sea ports.