Disadvantages Of Phosphorus
Phosphorus, in the form of phosphate is a non-renewable resource. It cannot be artificially produced. Phosphate rock is the raw material used in the manufacture of most commercial phosphate fertilizers. Phosphates are mined from naturally occurring mineral deposits that were once sediments at the bottom of ancient seas. Once mined, phosphate rock is then separated from particles of sand and clay (beneficiated) and sent to a processing plant. REPORT Akshi Phosphate rock (PR) is the raw material used in the manufacture of most commercial phosphate fertilizers on the market. With access to large, high-quality reserves of phosphate rock, Morocco, China and US are the most important players in phosphate industry. Ground phosphate rock from the mines is first sent to recovery units to separate sand and clay and to remove impurities. Most of the processes are wet to facilitate material transport and to reduce dust. A weak phosphoric acid (40-55%) is produced from the reaction of PR with sulfuric acid, using a wet- process. The obtained phosphoric acid is then used in the production of a series of liquid or solid fertilizers. The most important ones are single and triple superphosphates (SSP, TSP) and ammonium phosphates (MAP, DAP). Usually the plants are using flexible process technologies, allowing the manufacture of at least two products with interchangeable lines (e.g. TSP and DAP combination). SSP is simple to produce but is nowadays less popular. TSP results from the
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