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    • 5. 发明公开
    • ORGANIC FERTILIZER CONTAINING COMPOST
    • 含COMPOST有机肥料
    • EP1215956A1
    • 2002-06-26
    • EP00941840.1
    • 2000-06-27
    • Dinel, Henri
    • Dinel, Henri
    • A01G31/00A01G9/10C05F11/00C05F9/04C05F11/04B01J2/00
    • C05F11/04A01G24/00C05F9/04C05F11/00Y02A40/216Y02P20/145Y02W30/43Y10S71/903
    • A process for converting composted organic material produced by optimized composting procedures into pure organic fertilizer for agronomic and other uses, particularly the expanding organic food market. It is essential that only organic wastes that are compatible with being certified organic are used for the composting step. In the first step, the raw organic matter is processed into compost by optimized standard methods, and is screened to remove all particles approximately 1 cm in size or greater. This coarse material is recycled back into the composting process. In the second step, the material below 1 cm is further screened to separate out the compost fine particles of 1 mm or less. A major proportion of the particles should be below 150 microns. The particles between 1 mm and 1 cm are rejected, and may be used for other purposes. In the third step, the compost fine particles are pelleted at a pressure between 2,000 and 6,000 psi to form a pure organic fertilizer pellet of an appropriate density so that the nutrients will be released into a soil medium, or plant substrate, at a rate required for optimum plant growth. The compression process binds the fine particles together, and assists in the timed release of the nutrients from the pure organic fertilizer pellet. The pure organic fertilizer pellets can be applied to organic farm fields, market gardens, and the like, in the normal way.