METHOD FOR PRODUCTION OF COMBINED ORGANO-MINERAL FERTILISER Russian patent published in 2011 - IPC C05D9/00 

FIELD: construction.

SUBSTANCE: solution of aluminium hydraulic complex is mixed with potassium K₃[Al(OH)₆] with tripoli powder. Produced suspension is brought to boiling and is neutralised with phosphoric acid. At the last stage a complex sorbent produced from tripoli powder and suspension of hydrolysed peat, being an organic nitrogen-containing fraction of fertiliser are combined. Then the mixture is ground and dried. At the stage of production of organic nitrogen-containing fraction of fertiliser, peat is treated with 50% solution of potassium hydroxide KOH at the ratio of peat : potassium hydroxide, equal to 1:1.3 and during boiling for 1 hour. The produced organic mixture is neutralised with a solution of 30.7% H₃PO₄ until pH equal to 7. At the stage of combining a complex sorbent and an organic nitrogen-containing fraction of fertiliser, the following ingredients are additionally added into the mixture: ground dry peat, ammonia nitrate NH₄NO₃ and microelements, as boric acid H₃BO₃, magnesium sulfate MgSO₄ and ammonia molybdate (NH₄)₆Mo7O₂₄·4H₂O.

EFFECT: invention makes it possible to increase efficiency of fertiliser action at soil fertility due to usage of complex adsorbent, to adjust dosed addition of microelements and to simultaneously absorb toxic components and radioactive components with high selectivity.

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