| 摘要 |
Ground calcium-contg. nutrient substance is moistened, heated and mixed with an aq. binder soln. contg. 0.1-5 wt.% of a complex-forming cpd. (pref. Na or K salt of phosphoric acid, citric acid or EDTA) and an alginate salt (pref. with Na, K or propylene glycol) in such an amt. that its content in the final prod. is 0.1-0.3 wt.%. The mixt. is then pelletised under pressure at 38-100 degrees C. |
