Process for forming prills from sulphur and bentonite

Details Process for forming prills from sulphur and bentonite Process for forming prills from sulphur and bentonite

C - Chemistry, Metallurgy

05

G

71/44, 18/502

C05G 3/04 (2006.01)

Patent

CA 1216164

- 20 - ABSTRACT OF THE DISCLOSURE A process for prilling a mixture of sulphur and bentonite to produce a water-degradable prill includes adding dry bentonite in powdered form to molten sulphur at a temperature to provide a molten sulphur-bentonite mixture, forming droplets of the mixture, providing a quenching solution of either sodium chloride, sodium sulphate, potassium chloride or potassium sulphate at a temperature low enough to solidify the sulphur-bentonite mixture, feeding the droplets into the quenching solu- tion, passing the droplets through the quenching solution for a time and at a temperature of the quenching solution sufficient to anneal the droplets into prills, and remov- ing the annealed prills from the quenching solution and drying the prills to a specified temperature and moisture content. This invention relates to new and useful im- provements in the process and resultant product of form- ing prills from sulphur for fertilizing purposes, and to reducing the dust normally present with prills made en- tirely from sulphur.

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