METHOD OF PRODUCING SULPHUR-ASPHALT COMPOSITIONS HAVING LOW EMISSION OF HYDROGEN SULPHIDE AND SULPHUR DIOXIDE Russian patent published in 2013 - IPC C04B26/26 C08L95/00 

FIELD: chemistry.

SUBSTANCE: invention relates to production of compositions containing asphalt and sulphur which can be used in road and other construction. The method of producing sulphur-asphalt compositions involves merging, while stirring, an asphalt-concrete mixture heated to temperature of 140-150°C and sulphur granules having geometrical dimensions not greater than 10 mm, obtained by granulation of a mixture containing 86.21-90.50 wt % of powdered sulphur having particle size not greater than 0.5 mm, 9.05-12.93 wt % of an organic component having melting point higher than 70°C (substances containing fatty acids or saturated C₁₈H₃₈…C₅₅H₁₁₂ hydrocarbons) and 0.45-0.86 wt % of an emission neutraliser (metal oxides or mixtures thereof which form water-insoluble or partially soluble sulphides and/or sulphites with said gases).

EFFECT: improved technology of producing sulphur-asphalt compositions, reducing emission of hydrogen sulphide and sulphur dioxide when producing, transporting and applying a sulphur-asphalt-concrete mixture.

1 ex, 1 tbl