Single Superphosphate production

Normal Superphosphate. From its beginning as the first commercial phosphate fertilizer, normal superphosphate (NSP), also called ordinary or single superphosphate, has continued among the top fertilizers of the world (Fig. 8). Use of normal superphosphate decreased steadily on a percentage basis because of growing production of more concentrated materials, but grew on a P2 s basis to a maximum of 6.7 x 10 t... 

Thus one formula Ca is converted to dihydrogen phosphate, and the product is called single superphosphate (the super refers to its solubility/availability compared with rock phosphate). 

Production department can assist by planning the quantities and the production of various items to manufacture as per market demand and integrate into the best supply chain flow for the product. An integrated plant can manufacture alum, single superphosphate, 25 % oleum, 65 % oleum, and sulphuric acid. It will need bauxite, alumina hydrate, rock phosphate, elemental sulphur as per demand in market for which reliable suppliers, proper warehousing, and packing as well as dispatch are essential facilities. 

Run-of-Pile (ROP) - Products that are taken from the production piles without undergoing careful control of the particle size. This form of material consists of particles of many different sizes, from very fine powders to coarse, pebble-like particles. Usually the coarse particles are very friable and can be crushed under finger pressure. Typical examples of fertilizers sold as run-of-pile materials are some forms of single superphosphate and monoammonium phosphate. 

In addition, since higher analysis fertilizers have largely replaced S-containing single superphosphate and ammonium sulfate, incidental contributions of S to soils are reduced. Sulfur deficiendes are therefore expected to increase, and sulfur-containing fertilizers will probably be needed, particularly in moist tropical areas and especially for legume and vegetable production.. 

Single superphosphate (SSP), also called normal or ordinairy superphosphate, has been the principal phosphate fertilizer for more than a century and supplied over 60% of the world s phosphate as late as 1955. Since then its relative importance has declined steadily. In 1975, it supplied only 20% of the phosphate fertilizer, and this figure fell to 17% in 1988. The decline in actual tonnage has been small, but most of the new facilities have been built to produce other, higher analysis products. For the world as a whole, TVA estimated 1972 SSP production at 7,87 million tonnes of P2O5 and IFDC mentions a figure of 7.083 million tonnes in 1988, which means a decrease of 10% over 16 years [1). 

The use of sulfuric acid in automobile batteries, however, does not account for its production in such vast quantities. The largest single use for sulfuric acid is fertilizers, especially a sulfuric-acid/phosphate-containing-rock mixture called superphosphate. Because phosphorus is a major mineral nutrient needed by plants and because phosphorus is a major component of bones, bone meal was once a commonly used fertilizer. Today, however, phosphate rock, treated with sulfuric acid to become more soluble, can be used, too. 

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