B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
117/47.4
B01J 2/30 (2006.01) B01J 8/36 (2006.01) C01C 1/16 (2006.01) C01D 3/26 (2006.01) C01D 5/00 (2006.01)
Patent
CA 1211318
ABSTRACT OF THE DISCLOSURE Anti-caking agent is thoroughly distributed upon particulate hygroscopic materials, e.g., particulate inorganic salts such as potassium chloride and sodium chloride, by contacting an agitated stream of the par- ticulate material with an aqueous dispersion of anticaking agent and then passing the treated material through a fluid bed of the treated particulate materiel. The pretreated particulate hygroscopic material is typically warm, i.e., has a temperature above 25°C., and is cooled in the fluid bed which is fluidized with dehumidified, fluidizing gas having a temperature lower than the treated particulate hygroscopic material entering the bed. Cooled particulate hygroscopic material having a coating of anticaking agent distributed substantially uniformly over the surface of the particles and having a water content substantially the same as the pretreated warm particulate material is removed from the fluid bed.
423960
Borden Ladner Gervais Llp
Ppg Industries Canada Ltd.
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