Coal slag is a glass matrix alumina-silicate which is produced as a by-product of coal burning power plants. As it burns, the residual ash becomes molten. When this slag is cooled, it vitrifies into a glassy, abrasive material, which is then crushed to produce blast media.
- Grades: 12/20, 12/40, 20/40, 30/60, 80, Extra-Coarse, Coarse, Medium, Fine, Extra-Fine
- Packing Types: 4000lb and 2000lb Bulk bags, 100lb, 80lb, 50lb paper bags. Packaging types vary by plant and manufacturer
- Blasting Speed: 50 – 150 ftÂ²/hr
- Dust factor: High
- Recyclability: 1/10
- Consumption rate: 5-12 lb/ftÂ²
- Primarily used for the surface preparation of steel and concrete surfaces.
- Used for general purpose repair and maintenance blasting of coated steel surfaces
- Produces a moderate profile
- Used for a near white blast through medium to heavy coatings, heavy rust, and heavy mill scale
- Low cost
- Versatile in a wide variety of applications
- Plentiful supplies
- High dust
- Embedment into surfaces