| 摘要 |
A granular fertilizer and insecticide carrier-filler material which is produced from phosphatic clays is disclosed along with its method of production. The granular carrier-filler material is water-degradable, and is prepared from waste phosphatic clays by tilling the source material, allowing it to dry, crushing the dried material into granules, heating the granules at a temperature of about 450 DEG F. to less than 1600 DEG F. to obtain a granular carrier-filler material having a moisture content of no more than about 15% by weight. Depending upon end use applications, the granular carrier-filler material may be sized as by screening.
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