Removal of clay and other waste materials (depending on soil mineral particles smaller than 75 microns) in the sand and gravel mines has been one of the major problems. Conventional washing machines used in mines such as spiral and bucket sand washers have the following disadvantages Inability to separate the fine particles High Energy consumption and low efficiency High water consumption The lack of uniform sand A new generation of washing machines Sand washing in these machines occurs with high efficiency in water and energy consumption. Features of the system include Production of standard and uniform sand The ability to separate fine particles useful for the production of concrete Optimized water consumption Adjustable moisture of sand content Little space occupation Easy interchangeable parts, resulting in lower maintenance costs The sand washing machine is manufactured in in capacities of 70, 100, 150, 200 and 250 tons per hour The main facilities include Muddy water inlet tank Water Pump Hydro cyclones Dehydration sieve