| 摘要 |
A process for the preparation of powdered organo-mineral microfertilizers of sodium/potassium lignite by modification of organic substance with alkalies (NaOH, KOH), and as organic substance lignosulphonate is used, vapor-phase modification of which is carried out by the preliminary homogenizing at low temperature of 20-25 °C for 20-30 minutes with further modification with alkalies (NaOH, KOH) of 100 % concentration in quantity of 10-15 weight % at temperature of 90-95 °C for 20-30 minutes providing concentration of dry fraction of initial sodium/potassium lignites within 80-90 % from weight concentration of organic substance and further attribution of powdered state to dry fraction by means of mechanical grinding to fraction of 0.5-1.0 mm. |
