One of the most widely used equipments in the industry is the salt sand dryer. When the materials are washed in the spiral salt sand, their fine grains and micronized materials are removed along with the water and the materials will be completely cleaned, but in this method, some of the materials We will lose the benefit that the presence of these fine grains in the material has caused the se of the material to rise or actually make the material softer.

For this purpose, to use these materials and increase the percentage of softness and quality of the final product, the engineers of this industry designed a device called Serand dryer.