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dc.date.accessioned 2016-02-21T10:18:16Z
dc.date.available 2016-02-21T10:18:16Z
dc.date.issued 1979-01
dc.identifier.uri http://hdl.handle.net/123456789/4108
dc.description.abstract Ammoni a and carbon d iox i de are compressed to a pressure in the range of 150-220 bar and a temperature of l80-220oC, an exothermic reaction occurs to form carbonate which is then dehydrated to urea. The unconverted carbonate and excess reactants are removed in the solution purification stages and returned to the reaction system. The urea solution is evaporated to achieve required concentration for fertiliser or technical grade urea. If a low biuret content is required, the product is concentrated by crystallisation. The final shaping of the product is almost always done by prilling. en_US
dc.language.iso en en_US
dc.publisher United Nations Industrial Development Organization en_US
dc.subject Urea en_US
dc.title Urea en_US
dc.type Other en_US


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