Ammonium phosphate fertilizer

Ammonium Phosphate Fertilizer and Phosphoric Acid Plant... 

Jones, W.E. Olmsted, R.L. Waste disposal at a phosphoric acid and ammonium phosphate fertilizer plant. In Proceedings of the 17th Industrial Waste Conference, Purdue University, Lafayette, IN, 1962 Vol. 17, 198-202. 

Nomenclature. Because the ammonium phosphate fertilizers contain two of the primary plant nutrients, il is pertinent at tilts point lo briefly continent on the manner in which these fertilizers are named. A series of three numbers, separated by dashes, is used lo indicate the primary nutrient content uf fertilizer mixtures. In order, from left lo right, the numbers show the percentage of nitrogen, phosphoric oxide, and potash ... 

E.G. Sherif, F.A. Via, L.B. Post, and A.D.F. Toy, Improved fast-setting cements from ammonium phosphate fertilizer solution, European Patent No. EP0203485, 1986. 

Ammonium phosphates (mono- and di-ammonium phosphates) are particularly important in the USA. Table 2.1-6 gives the world production for ammonium phosphate fertilizers by region. 

Ammonium phosphate fertilizers strongly increasing in importance... 

Table 2.1-6. Worldwide Production of Ammonium Phosphate Fertilizer in the Period 1980 to 1994 in 10 t/a P2O5.

Liquid ammonium phosphate fertilizers ammonium polyphosphate (APP)... 

Ammonium phosphate fertilizers are relatively impure (purity ca. 85%), due to their being prepared with nonpurified wet-process acid. Commercial monoammonium phosphate contains 11 to 13% N and 48 to 53% P2O5 (theoretically 12.2% N, 61.7% P2O5). Commercial diammonium phosphate contains 16 to 18% N and 46 to 48% P2O5 (theoretically 21.2% N, 53.7% P2O,). 

Solid fertilizers In the manufacture of solid ammonium phosphate fertilizers there are two main problems ... 

Liquid ammonium phosphate fertilizers Ammonium polyphosphates can be manufactured from phosphoric acids containing either high or low concentrations of poly-phosphoric acid, or from orthophosphoric acid solutions. 

Australia was available from a pipeline. Ammonia could be reacted with phosphoric acid to make ammonium phosphate fertilizer, which could be transported by rail to Townsville on the Queensland coast to supply Australian and export markets. 

Phosphates of most metal ions and other cations are known. Some of these are of enormous commercial and practical importance, for example, ammonium phosphate fertilizers, alkali phosphate buffers, etc. Natural phosphate minerals are all orthophosphates, the major one being fluorapatite hydroxo-... 

It can be anticipated that various other metals will eventually be separated either from sea water or from the waste evaporator brine. Many metals are concentrated from sea water by phosphate precipitation during production of the magnesium ammonium phosphate fertilizer. Future metal recovery processes may utilize the fertilizer as a raw material. Because the evaporator brine contains a high concentration of chloride, a number of metals will be present in it as chloride complex anions (7). Many of these complex anions may be removed from the brines on an anion exchange resin such as Dowex 1 and then recovered from the resin simply by washing the column with fresh water. 

Tennessee Valley Authority. 1970. Effect of Aluminum and Iron on the Physical Properties of Ammonium Phosphate Fertilizers, IN Neuj... 

Ammonium Phosphate fertilizer 10 15-25 9 Resistant little or no change in weight small effect on mechanical properties generally suitable for practical use Nylatron Quadrant EPP... 

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