Method of preparing highly purified kiln dried solar salt

Details Method of preparing highly purified kiln dried solar salt Method of preparing highly purified kiln dried solar salt

1982-12-20

1984-12-18

Lutter, Frank W.

Classifying, separating, and assorting solids

Special applications

209 12, 209 11, 23295S, B03B 700

Patent

active

044889585

ABSTRACT:
Partially purified salt containing less than about 00.4 weight percent insolubles is further purified to reduce the insolubles until the milk pad rating is 3 or better for certain industrial uses and 1 for human consumption. The entry salt is washed in clarified brine to dislodge insoluble impurities adhered to the salt surfaces. The washed salt is then scrubbed with fresh water sprays to displace the wash brine from salt surfaces. The washed salt is drained and then dried in a kiln where flowing air blows away some impurities. The dried salt is passed through a magnetic separator, doubly sifted to remove both large and small impurities, and, where food grade salt is required, passed through a color sorter that removes relatively dark impurities.

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