Back to results
US 5,431,708 AGranted
Process for preventing a formation of dust during the loading and shipping of sulfate fertilizer granulates
AssigneeKali und Salz Aktiengesellschaft
InventorsGerhard Lehmann, Otto Wendt, Wolfgang Walczyk
Life of this patent
Estimating the term…
Abstract
A process for preventing the formation of dust during the loading of sulfate fertilizer granulates includes spraying a high-percent aqueous solution of urea onto the fertilizer granulates. The amount of aqueous solution sprayed ranges from 4 to 8 kg of solution per ton of granulate. The concentration of urea within the solution is between 50% and 80% by weight.
Claims5
A process for preventing the formation of dust during the loading or shipping of sulfate fertilizer granulates, by applying an aqueous urea solution, consisting essentially of:
- spraying the aqueous urea solution onto the granulates as a dust-bonding agent at a temperature of the solution between 45.degree. C. and 70.degree. C. in an amount of from 4 to 8 kg of solution per ton of granulate, and
- the concentration of the urea within the solution being between 50% and 80% by weight, based upon the total solution weight.
Dependencies are inferred from the claim text.