CLARK Donald R.,FROEHLICH Dan Michael,BRITTON Ahren Thomas
申请号：
US201715847795
公开号：
US2018319715(A1)
申请日:
2017.12.19
申请国别(地区):
美国
年份:
2018
代理人:
摘要：
A homogeneous fertilizer granule comprises slow-release (e.g. struvite) and fast release sources of phosphorus (P). The homogeneous fertilizer granule may further contain other essential nutrients and micronutrients required by plants. A number of methods may be used to make such granules. One method includes introducing a struvite slurry or fines and a liquid supply of water soluble P into a granulator. Alternatively, dry raw materials can be mixed with water/steam and/or another binder prior to being fed into a granulator. In another embodiment, pre-mixed dry raw materials are mechanically compacted and crushed to yield homogeneous fertilizer particles.
