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Wear Analysis of Abrasion Resistant Lining Elbow in Pneumatic Conveying
The air flow velocity brings most heavy wear damage to the outer arc wall of abrasion resistant lining elbow when conveying . If the other conditions are the same, reducing material colliding velocity to wall or change the material impact angle, can greatly reduce the wall wear damage. As the wear and tear is caused by the impact or friction between the particles and the inner wall of the pipe, the greater the particle velocity, the greater the energy of the impact or friction, the more serious wear is. In general, the amount of wear can be expressed as the n-times proportional growth of the conveying gas flow rate.
In pneumatic conveying, the amount of wear can be roughly considered to be proportional to the cube of the conveying gas velocity, that is: the greater the relative velocity of the contact with the pipe wall, the greater the contacting pressure, the higher the frequency of contact, The faster the wear damage of the pipe wall.that is The relationship between the velocity of air flow and the amount of wear
If the velocity of the air flow is too low, the material will be deposited in the abrasion resistant lining elbow, and blocks the pipe. Therefore, a reasonable choice of air flow speed is the key to ensure the normal work of the system.
Four main wear damage reasons of abrasion resistant lining pneumatic elbow :
(1) material properties. The more abrasive the material, the more serious wear.
(2) diameter and air volume selection. If you choose not properly, the wear was a series of times larger.
(3) mixing ratio. The lower the mixing ratio of material and air, the more serious the wear.
(4) flow rate. The higher the flow rate of the material mixed with the air in the pipe, the greater the erosion of the pipe wall.
To extend the pneumatic conveying, it is necessary to consider the material mixing ratio, flow rate, wearable elbow diameter and so on. The simple method to increase the hardness and thickness of the pipe wall is not the fundamental way to solve the problem.Pingxiang chemshun ceramics manufacturer is professionally solve wear damage of conveying pipeline with alumina ceramic abrasion resistant linings . which is cost effective and easy installed . more information in webiste : www.chemshun.com office@chemshun.com
