Abstract
For the purpose of antiblocking of salt in crude salt, we conducted slurry classification tests using a classification-type evaporator. In the classification test, the mother liquid flowed from the bottom to the top of the apparatus. It follows that: 1) microcrystals of salt products are reduced in size by about half; and 2) the average diameter of crystals tends to become larger by adding seed crystals, and by holding salt crystals longer in the apparatus.