- Present participle of slag.
The slagging deposits from a coal fueled power station are discarded into a heap by bulldozers.
Slagging is defined as the partially melted coal ash in a steam boiler.
An example of slagging is the deposits left in a boiler furnace.
- If the initial quantity of phosphorus or sulphur is large, or if the removal of these impurities is to be made very thorough, the dephosphorizing or the desulphurizing slagging off may be repeated.