Fertilizers pelletized with hydrated sulfates

Chemistry: fertilizers – Processes and products – Inorganic material


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71 63, 71 6403, C05D 500




The invention disclosed relates to the manufacture of compressed fertilizer pellets for dispensing sulfur and magnesium and at least one of the essential elements selected from nitrogen, potassium and phosphorous, the pellets are formed by compressing a compound containing at least one of the essential elements with a hydrated magnesium sulfate containing at least four moles of water of hydration.

patent: 3582311 (1971-06-01), Browder et al.
patent: 3926609 (1975-12-01), Effmert et al.


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