Proceedings: International Workshop-NPK Fertilizer Production Alternatives. Held in Madras/Bombay, India in February 1988

摘要

The proceedings of an international workshop on fertilizers are presented. Topics include: Role of NPK fertilizers in optimizing agricultural production; Fertilizer products and farmer needs; Review of the fertilizer situation in Asia and the Pacific with reference to multinutrient (NP and NPK) fertilizers; The role of agglomeration in the fertilizer industry; Nitrophosphates versus ammonium phosphates; Kemira's mixed-acid NPK process; Compaction/granulation of fertilizers; Establishing an NPK compaction/granulation plan in Guatemala; Compaction of NPKs in Guatemala; Raw material requirements for quality bulk blends; Comparative advantages and disadvantages of blended and granulated NPK fertilizers; Economic comparisons of selected NPK fertilizer production alternatives; Practical experiences in the granulation of urea/ammonium phosphates; NPK compound fertilizer production; Granular NPKs based on superphosphate and ammonium phosphate; Solid fertilizer granulation - An appropriate manufacturing technology; Complex fertilizer product - Quality control experience of Madras Fertilizers, Ltd.; Urea-based high potash formulations; Optimizing formulation of complex fertilizer grades; DAP/NPK performance improvement by retrofitting; Impact of raw materials and formulations on NPK plant design and operation; Design of granulators, dryers, and coolers; Design considerations for Nigeria's new urea-based NPK plant; Impact on fertilizer formulation and ambient conditions on the capacity of direct-fired rotary dryers; Questions and answers - Compaction granulation and bulk-blending process technology.