| 摘要 |
A granulation process for the production of high purity granules of salt material comprising: (a) a wet blend formed by intensively mixing together (i) particles of soluble fine water-soluble salt having a relatively wide size distribution over the range of from about -30 to about +325 screen size (Tyler mesh), (ii) water insoluble particles of about -150 screen size (Tyler mesh) with surface area above 1 M2/gr, and (iii) sufficient water or saturated water solution to provide a moisture content of up to about 20% and preferably in the range of from about 5 to 15% by weight of the mixture, (b) granulating the wet blend from (a), preferably by pan granulation, and (c) drying and recovering the granular product. The product comprises a granular salt product which has the properties of high purity (up to 99% salt), uniform size distribution in the range of from about 2 to 4 mm, a crush strength of greater than about 3 lb/granule and generally in the range of from about 5 to 10 lbs. and a final moisture content of about 1.0% or less.
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