METHOD OF PRODUCTION OF A COMPLEX FERTILIZER Russian patent published in 2005 - IPC

FIELD: production of a complex fertilizer.

SUBSTANCE: the invention is pertinent to production of a complex fertilizer and the method of production of the complex fertilizer provides, that the ground phosphate admix with a waste pickling solution in a mass ratio of 1:1, then they add perlite of the faction of 1.6-2 mm in amount of 5 % relative to the mass of the mix and the mix is fed into a screw-conveyor drier, where formation and drying of granules at the temperature of 150-180°C is exercised. The produced fertilizer has the insect-fungicidal and meliorating properties at simultaneous fertilizer cost reduction and utilization of the pickling solutions.

EFFECT: the invention ensures production of the fertilizer with insect-fungicidal and meliorating properties at simultaneous reduction fertilizer cost and utilization of the pickling solutions.