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        行業新聞
        
    
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        Influence of grinding medium on rubber lining plate of pelletizer
        
							
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        • Release time：2022-03-30
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        Detailed introduction
        
                            In the general cylinder wave lining plate, there are one row, two rows (separated by 180°) or four rows (separated by 90°) of wedge iron, which are bolted on the cylinder body wall and play a positioning and pressing effect on the lining plate. The center lining plates are not connected by bolts, and are only fixed by mutual embedding and pressing based on the concave and convex dovetail shape of their ends. Each circle of lining on the circumference of the cylinder is so fixed that there are more than ten circles of lining laid in this way along the entire length of the cylinder. The cylinder liner device can be arranged from the outlet end, or from the outlet end, or from both ends together; Install the rubber lining plate of each row of pelletizer, first tighten the riveted plate with bolts, and install the lining plate; The 1/4 circle of each row of lining plates is six pieces, and the gap is reserved according to the plan, and the spacer is adjusted with the gasket, and the wedge iron is stretched out, and then the plug is tightened. During the installation process, if the cylinder deformation causes a deformation of 5-15mm on the circumference, the welding pad iron can be thickened on the riveting plate, and the riveting plate can also be cut to 5-15mm for the installation. The rubber lining plate of the ball mill is installed in the order of installation, and the fan lining plate of the end cover is installed first. The fan lining plate of the end cover of the device is installed from the bottom piece, and then filled half a circle from the two ends. After each piece is installed, the bolts should be connected, but the nuts should not be tightened. Then, rotate the cylinder 180°, install the remaining half turn, and tighten all bolts. Then the rubber lining plate of the ball mill is installed, and the wedge iron directly below the large tank is installed first. After fastening it with bolts, the wave armor of the lower half circle of the large tank is installed, and the two ends are fixed with wedge iron. The large tank is rolled 90° by the hoist. Then fill the 1/4 ring lining plate of the large can, and then tighten it with the wedge iron, and then use the hoist to rotate the 1/4 ring lining plate behind the 180° device of the large can.
        

        
	 

        
Some people reflect that the service life of the rubber lining plate of the ball mill is too short, and explain why the life of the rubber lining plate of the ball mill is relatively short, and the method of extending the service life of the rubber lining plate of the ball mill: First, the influence of the grinding medium because there are many kinds of raw materials for grinding, the hardness of the raw materials is also different, the common grinding raw materials are: all kinds of mining raw materials, such as copper ore, manganese ore, etc.; Various non-metallic minerals, such as limestone, granite, etc.; As well as the use of coal in the power industry, the hardness of the medium is an important reason for determining the wear failure of the liner, the higher the hardness of the ore, the shorter the service life of the liner. Second, the impact of some common mistakes in the operation, there are generally two kinds of common mistakes: First, the feeding is not uniform, sometimes the feeding block is large, and sometimes the machine runs empty, resulting in the steel ball directly rubbing the cylinder and liner, and both bodies are worn. This situation greatly increases the breaking of the liner and the steel ball, and causes great damage to the liner, which is a very bad operation mode. The second kind of mistake is that when the ball mill or liner is defective, it is not repaired in time, for example, the bolt is loose and falls, the individual liner falls off, etc. If it is not replaced in time, the defect is not brought by the current small section, but will then spread to the entire fuselage, causing great damage to the liner and cylinder. According to the physical properties of the lining material, mainly look at the hardness and impact resistance, the higher the hardness of the material, the better the wear resistance, may achieve a direct proportional relationship, so that the ball mill in the operation process, the steel ball like a waterfall fall, produce an impact on the material and the lining board, the size of the impact depends on the size of the block. The diameter of the steel ball and the diameter of the mill cylinder. Fourth, the impact of ball mill manufacturing and installation technology between the lining plate and the cylinder wall and its own crusher factory casting defects, mechanical properties. The chemical composition does not meet the qualification requirements, etc., which are direct factors affecting the normal operation of the ball mill
        
						
        
					
        
                
        
			
        
            
        
				
			
        
			
        

        
    
        
        
        
            
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