With the development of international and domestic sand process, kefid on the basis of the original technology to successfully design a world-class sand  making production line, sand making production line by the majority of customers praise in the international arena.

Sand  making production line‘s overview
Sand  making production line is a production of construction sand and stone, special equipment, energy-saving than traditional sand making 50%. It can be made from a variety of rocks, gravel, river gravel in various size buildings with sand, sandy uniform particle size, high strength, than natural sand, the sand of the ordinary hammer sand production more in line with the building requirements can enhance the quality of construction. The device has a reliable, reasonable design, convenient operation, high working efficiency.
Sand  making production lines 
Artificial gravel production line through the feeder, jaw crusher, crushing, respectively into the (sand making machine, counterattack crusher) through the vibration screening level required a variety of specifications stone, sand through the efficient sand washing machine get what you demand for the finished sand.
Sand  making production line works:
Material from the upper part of the machine vertical fall into the high-speed rotation of the impeller, high-speed centrifugal force, and another part of the umbrella form of triage in the material of the impeller around high-speed impact and crush the material after the impact each other again in the impeller and to the material between the chassis the formation of vortex repeatedly hit each other, friction and grinding, straight from the lower part of the discharge, the formation of the closed-loop recycled many times, finished granularity reach the required screening device control
 Sand  making production line workflow: 
First of all, the stone by the coarse crusher preliminary crushing, then the production cost of crude material transportation by belt conveyor to the fine crusher for further crushing, crushing stone into the shaker screening out two stones, to meet the feed size of Sand the stones into the sand making sand, another part of the material back into the thin broken. Finished products into the sand making the gravel part of made of sand, to Jingxi sand cleaning (optional) sand, and another part into the sand making machine is broken again.