Standard of sand gravel aggregate in different industry are different, 0-5mm, 5-10mm, 10-15mm, 15-20mm, 20-30mm, 30-60mm of sand to be selected according to different industry standard. In recent years, building on the fineness of the sand in the increasingly stringent requirements, especially for highway construction, in order to ensure the engineering quality, good infrastructure, the quality of sand should be strictly controlled.

In fact, to ensure the quality of sand and gravel to two security, hand to pick the sand making machine, the optimization is performed in sand grain type; on the other hand, to be equipped with sand washer in the sand production line, do a good job of miscellaneous work except sand grading.Today, we give a blow to share application case a Kunming sand washing machine in highway construction.

In the last year of the Twelfth Five Year Plan, Kunming city to be completed 383 administrative village road hardening, the total mileage totaling 3018 km. Due to the local natural condition is bad, the rain is too large, there are about 150 kilometers of road damage every year. Therefore, highway construction in Kunming city hand to expand coverage of the realization of every village access roads, on the other hand, is to do a good job of highway maintenance.