The purpose of this compendium of the most important processes used for making phosphate fertilizer materials is to provide a guide to the selection of process technologies for developing countries interested in initiating efforts in this sector. All of the processes described here are based on the use of naturally occurring phosphate rock as the prime raw material.

The purpose of this compendium of the most important processes used for making nitrogen fertilizer materials is to provide a guide to the selection of process technologies for developing countries interested in initiating efforts in this sector.