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1 Polish Journal of Chemical Technology

1 2002

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Industrial tests on the production of nitrogen-sulphur fertilizers

Biskupski A., Malinowski P., Ochal A., Żak W.

Polish Journal of Chemical Technology

2002

Vol. 4, nr 4

11-13

Zakłady Azotowe ,,Kędzierzyn" S.A. have been manufacturing nitrogen-sulphur fertilizer of a trade name Salmag GM with sulphur for a few years. Anhydrite was a source of sulphur foi* this fertilizer until the year 2000. The industrial test results during which anhydrite was partially substituted with phosphogypsum coming from ZCh ,,Wiz6w" S.A. are presented. The products exhibiting very good physicochemical properties (similar and sometimes even better compared with the products obtained only with anhydrite) were obtained during the tests. The product has increased the water contents, yet not decreasing its quality. The tests were totally successful. Anhydrite may be partially substituted with phosphogypsum in the present system operating in ZAK.