Polygonmach Fine Material Washer, Spiral Classificator, Screw Washer

Fine material washers are most commonly called spiral classificators or screw washers and widely used to clean fine materials in the aggregate and mining industries of products such as sand, gravel, or crushed stone. A rotative screw shaft is inside of the trough to which transports a water/material mixture. As the materials are conveyed along the screw shaft, agitation and rotation of the screw provide for washing and separation of finer particles from coarse ones. Water is simultaneously introduced to the system to assist washing in the removal of impurities, leaving fine, drier materials ready for further processing or stockpiling. Fine material washers are designed to treat fine materials into high-quality and pure materials that can be applied in construction and in the production of concrete, among other uses. On the other hand, a spiral classifier, otherwise referred to as the spiral classificator, is a mechanical device that has been used in the classification of materials according to the particle size, shape, or density. It is basically of a spiral structure, having an inclined trough with a rotating spiral shaft that conveys the materials through the machine. During operation, when the material flows into the classifier, the rotation of the spiral will carry the fine particles upwards, setting the coarse ones at the bottom. The segregation of the materials of different size fractions by the spiral action segregates them, hence classifying them precisely for separation. Spiral classifiers are widely used in mining and mineral processes for separating ores and minerals of higher grades by the use of particle size, facilitating further processing of downstream flowing for better efficiency.