As we all know, crushing is almost the first process in the processing of various minerals, and this process plays an important role in the entire mineral treatment process. Some minerals need to ensure that the material is not too crushed after crushing, but also need to maintain a certain fine particle size to meet the better application of the material in the whole process. At present, most of the users require the development of the direction of scale efficiency, therefore, the development of fine crushing large double-tooth roller mineral sizers suitable for avoiding over-crushing. It is very important to meet the urgent need of domestic mines and replace imports
① Suitable tooth shape is used for incoming materials, appropriate Angle, B Angle and spiral arrangement are determined, so that large materials are broken by shear, extrusion, bending, and forced discharge: The material that is smaller than the size of the product is screened, and only the large material is broken, so as to avoid the defect of crushing the size of the material at the same time, so that the material reaches a certain fineness, and the phenomenon of over-crushing is avoided. With this mineral sizers, the crushing process can be simplified and the finished product can be produced directly on the open circuit without the need to check the screening:
(2) Strictly ensure the particle size of the product. For the size of the broken material, select a special center distance, because the center distance is fixed, so the material can be forcibly broken, in addition, there is also a crushing rod under the crushing roller, the material can also be broken and screened again, can strictly control the granularity of the crushed material, to ensure the finished product particle size and fine grain content in the product:
(3) The equipment structure is compact, mineral sizers internal force balance, no vibration, especially the mineral sizers low height, which can effectively use the space size, reduce the strength requirements of the plant, save capital investment, especially suitable for the crushing equipment as a mobile or semi-mobile crushing station:
(4) The crushing gear sleeve adopts the whole segment casting structure, which simplifies the structural design of the roller and facilitates disassembly and assembly: In addition, according to the different properties of the material, high-performance alloy steel or surfacing wear-resistant alloy is used to improve the wear resistance to meet the requirements of various ores:
(5) The mineral sizers of this series have a high degree of automation, and the electronic control system is PC automatic control system, which can monitor the whole machine. Once the mineral sizers have a lot of feed and there is a "stuffy car" phenomenon, the whole system will immediately alarm and each interlock control feeder will stop feeding. The mineral sizers are reversed to protect the mineral sizers and the entire system. The crushing principle of 2PGX series mineral sizers is mainly to crush, cut and bend the material. According to the physical properties of the material and the granularity requirements of the input and discharge materials, the tooth shape, tooth height, roller diameter and spacing are reasonably selected. Then the special teeth are arranged at a certain Angle, so that the material can be bitten and discharged smoothly. The incoming materials that are smaller than the size are not involved in crushing and directly discharged, so that the over-crushing is small, the particle size is uniform, and the energy consumption is reduced: at the same time, the pre-screening division order is reduced, the money is saved, and the processing capacity is improved.
Due to the large processing capacity of the mineral sizers, the choice of speed is also very important. In the case of the same material characteristics and crushing ratio, the speed is high, the output is large and the power consumption is large. Therefore, the circular speed of the general roller is mostly between Q53ms for hard materials the speed is generally 1.52ms for soft materials the speed is generally 67ms and 2GX 1000mineral sizers when the power, crushing ratio and yield are basically determined, depending on the characteristics of the material and working experience, The roller speed is selected according to 45 s, which is a high speed, and it is quite successful from the field use. It fully meets the requirements of production and selected power. mineral sizers of this series are designed with forced biting and forced discharging properties. A small part of the broken material is leaked through the gap between the tooth side and the top of the tooth. Then the proper tooth shape is selected according to the material and the special arrangement is made, and the crushing roller is made at a reasonable speed. In this way, the processing capacity of mineral sizers will be greatly improved, and the calculation formula of the processing capacity of the discharge particle size is strictly guaranteed
The mineral sizers designed by us have a very broad market prospect because of their dual functions of crushing and grading, large processing capacity, high reliability and simple structure.