Why you need sand making flow?

In recent years, with the rapid construction development home and abroad, Huge demands for construction sand sharply rise, but the amount of natural sand collected by the natural river washed sand restrictions and sand mining has been unable to satisfy the amount of sand required for the construction development. 
Sand prices began to rise year after year, due to the lack of natural sand. In order to deal with the problem that the shortage of the construction sand between production and consumption， then artificial sand was produced.
Artificial sand is also called manufactured sand, which was produced by crush the cobble stone or other stone into sand by sand making machine. As the basic materials of concrete, cement mortar of architectural sand, Successful application of artificial sand is an indisputable fact that a large number of engineering practices (including the Three Gorges Project) has demonstrated the possibility and necessity of using sand.
There is scarcity of natural sand due to heavy demand in growing construction activities which forces to find the suitable substitute. The cheapest and the easiest way of getting substitute for natural sand is by crushing natural stone to get artificial sand of desired size and grade which would be free from all impurities.
Builders with shortage of quality sand for construction will need the artificial sand. The distance and the fact that the vehicles are overloaded to make it profitable for operators puts a premium on sand availability.
The advantage of using good river sand is that it mixes easily with concrete and bonds well, making the plastering work less cumbersome for the masons and giving a good finish to the buildings. But on the other hand, the continuous mining of sand causes environmental problems.
In such a scenario, artificial sand is seen as a welcome alternative to natural sand. LIMING has hit upon the idea of designing a kind of sand making machine in order to making sands from many kinds of stones. The artificial sand would be available in two grades — 1-3 mm for plastering and 3-5 mm for all construction work. As it would be double-washed and silt-free, it would bond better with concrete and would require lesser curing time than river sand.