The materials that can be processed by the granite sand machine include limestone, granite, basalt, river pebble, iron ore, marble, cobble, etc. The main equipment for the production of sand and gravel aggregates of the granite aggregate sand making machine series project includes jaw crusher, impact crusher, cone crusher, and new type sand making machine. Not all materials can be processed, so there are certain requirements for the processed materials.
1. Hardness of processing materials.
Generally, the harder the materials with higher hardness are, the harder they are to be broken, and the more serious the wear and tear on the equipment, which is easy to cause the low capacity of the sand maker and difficult to achieve the desired output. Here is a brief introduction of the hardness of some materials. The lower hardness is talc, the Mohs hardness is 1, while the hardness of gypsum is 2, the hardness of limestone is 3, the hardness of iron ore is 5.5, the capacity of quartz stone is 7, and the hardness of diamond is 10. The Mohs hardness is 6-7 for hard stone, such as granite, 3-5 for medium hard stone, such as marble, and 1-2 for soft stone, such as limestone and dolomite.
2. Fineness requirements of materials after crushing.
The fineness of the material crushed by the crusher can be checked by using the water screen method and the negative pressure screen method. Generally, the sand maker has high requirements on the fineness of the material crushed, that is, the finer the material crushed, the smaller the crushing and sand making capacity.
3. Materials with certain viscosity.
The greater the viscosity of the material, the easier it is to adhere. The materials with high viscosity will adhere to the inner wall of the crushing chamber, affecting the amount of materials contained in the crushing chamber, reducing the work efficiency, and even affecting the normal work of the granite sand maker in serious cases. If the viscosity of crushed sand and gravel aggregate is slightly large, the crushing chamber shall be cleaned frequently.
4. The humidity of materials shall be appropriate.
When the material contains large amount of water, it is easy for the material to bond in the crushing chamber of the crusher, and it is also easy to cause blockage in the feeding and conveying process, resulting in reduced crushing capacity. Therefore, in order to keep the capacity of the crusher unaffected, the humidity of materials should be strictly controlled when selecting materials. If the humidity of materials to be crushed is too high, sunshine or air drying can be used to reduce the percentage of water in materials.
The competition of granite sand machine products is the competition of the market industry chain. Granite ore, cement, river gravel, sand aggregate and other materials are the key to enhance the competition of the industry chain. The new manufactured sand production line of SMMVIK Machinery came into being under this background. With its remarkable advantages, it will play a huge role in the future production competition.
