All Slag Abrasive
Primarily used for the surface preparation of metals and concrete surfaces, Coal and copper slag abrasives are a non-recyclable and high dust abrasive media. Coal slag is a glass matrix alumina-silicate which is produced as a by-product of coal burning power plants. As the coal burns, the residual ash (slag) becomes molten.
When this slag is cooled, it vitrifies into a glassy, abrasive material, which is then crushed to produce blast media. A wide range of mesh sizes are available, with some being capable of removing very thick or elastomeric coatings.
Coarse 12-40 coal slag produces a moderate profile and is used for a near white blast through medium to heavy coatings, heavy rust, and heavy mill scale. 12-40 is often used for general purpose repair and maintenance blasting of coated steel surfaces.
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