1982 Bexton Cominco urea sulfur
A process is disclosed for the production of a urea sulfur fertilizer by mixing urea and molten sulfur to obtain a molten mixture and solidifying the molten mixture to obtain a homogeneous solid. This urea sulfur contains sulfur with particles smaller than 100 micron. The process comprises passing the molten urea and molten sulfur through a mixing device at a temperature above the melting points to produce a finely divided sulfur dispersed in urea. It is claimed that this melt can be prilled and send to a granulation.
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