The limestone has a compressive strength of 20-120 MPa and a density of 2000-2600 kg/m. It is a crystalline structure with a layered structure. Most of the limestone is fine and hard, and has strong weathering resistance. It is distributed in all parts, has convenient mining and easy processing, and is generally carried out by limestone processing production line. 2. Limestone complete equipment In the limestone processing line, the commonly used equipments include crushing equipment, sand making equipment, screening equipment, sand washing equipment, etc. Among them, there are jaw crushers , impact crushers or hydraulic cones, limestone sand making machines . , wheel washing machine, circular vibrating screen and other equipment, of course, also need to connect the belt conveyor between the major equipment. The specific limestone complete processing equipment is also the same, the model, the number or the choice of certain equipment, the user also needs to be configured according to the situation of the mine. 3. Limestone processing technology For the processing of limestone, the first is primary crushing, which is often referred to as the coarse crushing process. The raw material passes through the silo, is uniformly fed by the vibrating feeder, and is transported to the jaw crusher for primary crushing. The material and the fine material sieved by the vibrating feeder are transported by the belt conveyor to the impact crusher; then the medium and fine crushing is performed, and the rounded vibrating screen is used to screen the broken and broken material, and the larger granular material is sieved. Return to the counter-break and break again, the grade is passed to the next process; then the sand crushing equipment is used to carry out the fine crushing of the mineral; finally, the washing machine is used for washing, so that the finished sand stone looks cleaner. The gradation is higher. However, users of this process can make specific additions and subtractions according to the mineral conditions of their own processing and the specific requirements of production. Nitriding Screw and Barrel for Rubber
The barrel and the screw work together, the barrel contains the screw, and the screw rotates in the barrel. When the screw rotates and pushes the plastic to move forward in the barrel, the outside of the barrel heats and transfers heat to the plastic in the barrel. In addition, the volume of the screw on the screw is gradually reduced, so that the plastic in the screw groove is squeezed, turned and cut. After the action of various forces such as cutting, it is uniformly mixed and plasticized. As it moves to the front of the barrel, it gradually melts into a viscous fluid state, completing the plasticization of the plastic.
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In the limestone processing line, the commonly used equipment is crushing equipment, sand making equipment, screening equipment , sand washing equipment, etc.