Patent ID: 6331193
Filing Date: 2001-12-18
Classification: B01J,C05D,C05G

Abstract:
The method for granulating a sulfur feedstock into granules, comprising the steps of:providing a sulfur powder feedstock having about 99.9% particle size of -150 mesh of said 99.90% particle size of -150 mesh about 90% consisting of a particle size of -200 mesh;providing a binder material having a moisture content and including a surfactant;contacting said sulfur powder feedstock with said binder material;forming a pre-moistened mixture of said feedstock and said binder material having said moisture content and including said surfactant, said mixture having a moisture content of between 4% and 8% by weight;introducing said pre-moistened mixture on to a pan granulator containing said sulfur powder feedstock;maintaining pan moisture conditions where the moisture content on the pan of said pan graulator is between about 1.5% to about 11% by weight; andforming sulfur granules on said pan directly from contact of said pre-moistened mixture and said sulfur powder feedstock in the absence of seed material.