Dust suppression in anhydrite process.

Saarbergwerke AG uses about 200 000tonnes/year of activator containing natural anhydrite. This project was aimed to reduce dust generation, especially in the roadside pack building area, and to develop a method of analysis for routine determination of anhydrite and its subsequent product gypsum in mine dusts. Orientating investigations were realised on roadside pack building materials containing flue gas desulphurisation gypsum and cement. These investigations proved that dust generation at the blowing pipe's end cannot be avoided, but it can be substantially reduced. Beside routine diffraction analytic and quantitative determination of anhydrite and gypsum the activator constituents can be indicated with the same method. Their enrichment in respirable dust has been determined by chemical analysis.
Saarbergwerke AG uses about 200 000tonnes/year of activator containing natural anhydrite. This project was aimed to reduce dust generation, especially in the roadside pack building area, and to develop a method of analysis for routine determination of anhydrite and its subsequent product gypsum in mine dusts. Orientating investigations were realised on roadside pack building materials containing flue gas desulphurisation gypsum and cement. These investigations proved that dust generation at the blowing pipe's end cannot be avoided, but it can be substantially reduced. Beside routine diffraction analytic and quantitative determination of anhydrite and gypsum the activator constituents can be indicated with the same method. Their enrichment in respirable dust has been determined by chemical analysis.