METHOD OF OBTAINING SULPHOAMMOFOS Russian patent published in 2010 - IPC C05G1/06 

FIELD: chemistry.

SUBSTANCE: invention relates to method of obtaining complex fertilisers, which contain ammonium phosphates, as well as sulphur, namely to production of sulphoammofos. Method includes neutralisation of phosphoric and sulphuric acids with ammonium until pulp with viscosity 18-35 mPa*s, after that obtained pulp is dispersed with air with relative humidity 90-100% with obtaining at granulation stage charge, which contains particles with size less than 0.5 mm to 1%. Sulphuric acid is supplied to reaction zone with pH equal 4.1 - 4.5. Obtained granules are additionally conditioned with solutions of first amines in industrial oils with their ratio in conditioning mixture1 : (8 - 10) respectively, and mixture is taken in amount 1-3 kg/t of product.

EFFECT: method allows to reduce dustiness of output gases, as well as to increase product quality, namely to obtain non - caking product with strong and homogeneous in size and structure granules.

3 cl, 1 tbl, 3 ex