How about the quality of sand produced by sand making machine?

The pebble  is specializing in crushing cobbles into qualified fineness. This is how Shanghai Jianye distinguishes the good sand from the bad one, hopping this could help you.

The construction sands are necessities for the construction material market. The quality of the stone is the key factor in the building quality. At the very beginning, the common-used stones are natural stones such as cobbles while there is a disparity in the quality with a relatively quantity. An alternative is blasting mountains and crushing stone with manual force with a relatively high cost. In the 1960s, there was a special job, which is to produce stones for bridge construction. With the scientific development and the market demand, the stone production lines are quite mature such as the impact crusher production line, which features its high productivity, good shaping effect and becomes the most common stone production line.

The automatic production pattern starts by convoying the raw material to quarrying plants. Through the coarse crushing and the , the vibrating screen will classify the materials into several stockpiles of various fineness. The whole process ends by the transportation to the market for sales.

It is hard to distinguish the quality of the stone, which can only be roughly differentiated. For example, the method of judging the quality with appearances. We can judge it by the gloss; the glossy one is a better one. Besides, the second ground we can lean on is the slag proportion. More slag, worse qualities. The most directive way to make the distinguishment is smashing it with a hammer. The strengthen is higher, the quality is better and vice versa.

Another key factor in the stone material is the quality of the raw material; the raw material is of a higher strengthen, the stone material has a higher strength, and vice versa. And the quality is also certain to be effected by the machinery, one-step-shaping stones are better than multi-step-shaping ones in wide ranges of properties. And this is the reason what the impact crusher is so popular( the in increase the proportion of one-step-shaping stones to a big extent).