| 摘要 |
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)6Mo7O244H2O. ^ 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. ^ 5 tbl, 2 ex |
