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Common Sense of Sand Maker
The sand making machine produced by our company can provide you with all-around technical supports.  According to specific requirements, we can combine
different models together to meet various needs. HX series crusher is a high-efficiency rock crushing equipment at international leading
level; the machine introduces the crushing theory and technology from Barmag Company of America and combines the actual situation of sand making.
It is widely used for crushing of hard and brittle materials, such as rock, grinding material, refractory material, cement clinker, quartzite,
iron ore and concrete aggregate; and it is especially suitable for the sand and sandstone making for construction and road paving.
Working Principle 
Stone less than 50mm enters sand making machine through conveyor belt. Stone is crushed by hitting other stones. Material falls down to impellor
cavity. Under great centrifugal force, it hits material that coming downwards. After hitting each other, they force a vortex between impellor and
shell, and hit each other several times. Finally, smaller stone comes out and goes to vibrating screen. Satisfactory material is transported to
sand washing machine. Overlarge material will go back to sand maker to be crushed again. Output sizes can be made according to customers’
requirement. If input size is larger than the designed size, other crushing equipment will be necessary.
Characteristics 
1. VSI crushing machine is a new type rock crushing equipment developed in the 1990s and is used for substituting roller and ball mill.
2. The structure is simple and the operation is stable;
3. Low energy consumption, high output and big reduction ratio;
4. Small bulk, convenient operation, installation and maintenance;
5. The product is in the cubic shape with small iron pollution;
6. During the process, the stone rock can form a protective bottom layer which makes the equipment more durable;
7. Some easy wear parts adopt hard and wear-resistant materials and have small bulk and light weight, so that it can be changed easily.  

When it comes to the primary crusher, it mainly refers to the jaw crusher and impact crusher. Jaw crushers are widely used in stone mining,
metallurgy industry, building material, highway, railway, water conservancy and chemical industries. Various material with compression resistance less than 320MPa can be crushed. Impact crusher are optimized after adopting advanced techiniques. Impact crusher can crush granite, basalt, bluestone, the diameters of which are from 100mm to 500mm, and the compression strength of which is not more than 350Mp. The final product is the desirable device for aggregation used in water and electricity, expressway, manual work sand material, crushing, etc.During the process of designing a crushing plant of any nature and size, to select the right type and size of primary crusher is of great
significance. Generally speaking, this machine is the largest and most expensive single item in the plant; a mistake in the choice may lead to a full replacement. Therefore, you have to pay close attention when choosing primary crushers.