Application of sand making machine for sand and gravel industry

By the state policy of expanding domestic demand driven, over the road, railway and other infrastructure investment is increasing, effective development of large projects, in urgent need of a large number of high-quality aggregate supply. But in order to protect the ecological balance, the state expressly prohibited unauthorized excavation of natural sand, gravel supply can not keep up with demand, which requires a large amount of artificial sand. In the road along the way to establish the aggregate base, to ensure adequate supply in the construction, in the aggregate production, mainly rely on the sand and stone equipment production equipment, raw materials are mainly granite, limestone, pebbles and other hard stone, after feeding machine, jaw crusher, impact crusher, sand making machine, vibrating screen and a series of crushing and screening equipment into a hierarchy of needs. Artificial sand is decided by its own characteristics, the application of all aspects of the natural sand is higher than that of ordinary. Sand fineness is refers to the different particle size of sand mixed with average thickness. Usually have a coarse sand, fine sand, the. Grading of sand is sand size particles proportion. Sand porosity depends on the particle size of sand at all levels with the degree of. Well graded sand, not only can save cement, but also improve the density and strength of concrete and mortar. Usually have a coarse sand, fine sand, the. Artificial sand is composed of rock crushing and, due to the high cost, flaky and powdery materials, generally do not have. According to customer needs, with the crusher sand making machine or natural rock is crushed into the required fineness, especially the main equipment of sand making machine has been China gravel Association pushing for artificial mechanism sand. The development of artificial sand and gravel sand making machine not only solves the problem of sand used in construction of resources, and to improve the quality of sand and gravel, the rights and interests of the users, which has a positive effect. Because, the artificial sand are mechanized production, have a fixed production facilities and perfect management, quality of personnel is relatively high, and these are the most natural sand production enterprises lack. Building sand shall provide certificate of product in sand and concrete standard provides for a number of years, but so far not implemented. Through the development of artificial sand tailings have been overcome, and has a positive significance to improve the quality of the sand industry. Although the mechanism of sand control technique and equipment in China research and development project started late, but the sand making equipment technology in China has reached the international advanced level of equipment, sand making machine, favored by domestic and foreign customers, I believe that through our joint efforts, our country sand making equipment will have great transcendence. Artificial sand is put into use, there is a great help to alleviate the shortage of stone in the engineering construction, become the backbone of Engineering stone production.