With the development of high grade highway asphalt pavement construction, asphalt mixture pavement performance of aggregate selection is particularly important. The bonding force of asphalt and stone is good or bad, directly affect the performance of asphalt pavement, many engineering of the early damage is caused due to lack of stone and asphalt adhesion. The territory of Hunan Province, the distribution of more limestone, and granite less. According to the requirement of asphalt pavement material technology, limestone is alkaline, good adhesion with the asphalt, so the local use of the rich limestone resources, processing of sand and gravel aggregate for concrete mixing station, railway construction, highway, etc..
As everyone knows, the main constituent of limestone is calcium carbonate, lime and limestone used as building material, it is also an important raw material for many industrial. Stone blasting down from the mountains, into the vibration feeder by dump trucks will be less than 630mm of the stone, the stone of the vibrating feeder evenly into the jaw crusher, jaw crusher for the first section of stone crushing machine, from a broken jaw out of stone in the 80mm - 160mm or so, into the crusher second stage crushing through skin belt conveyor, the circular vibration screen will be larger than the 40mm return to counterattack broken stone to break, 40mm below the stone into the VSI sand making machine, finally, sieve grading sieving the finished material through the circular vibration, larger than the finished material back into the sand making machine to break, finished product by belt conveyor to finished area.
Through the production process of the above limestone sand introduction, everybody already knows the limestone need what equipment in the processing process. Limestone sand production line to the customer with Xi Zhi mill including feeder, jaw crusher, impact crusher, sand making machine, VSI vibrating screen, and so on, the entire production line of reasonable structure, high production efficiency, high yield, simple operation, widely used in highway, railway, water conservancy, bridges, chemical, coal and other industries and sectors.
VSI sand making machine Xi Zhi production, than the traditional sand making machine 50% energy saving, new products developed for the beginning of this year, is now in Hainan, Qingdao, Jiyuan, Nanyang, Hangzhou, Wuhan and other places is put into use, and achieved good results. The VSI machine processed sand gravel aggregate, using "stone dozen stone" and "hot stone" principle, sandy granularity, high compressive strength, far more than ordinary natural sand, sand hammer hit the production of sand more architectural requirements, more can improve the construction quality.