Runtai Engineering Coal Bunker Lining

Causes of coal bunker linings Fold edit this paragraph Coal bunkers used to store coal in China's coal mines, power plants, and docks are basically made of concrete, and their surfaces are not smooth and have large friction coefficients. High water absorption, which is the main reason that often causes sticking and clogging. Especially when soft coal is mined, there is a lot of pulverized coal, and there is a lot of moisture, the silo blocking accident is particularly serious.
Bunker Blocking Forms Folding Edit There are two forms of coal bunker blocking seen in this paragraph. One is that the wet coal powder first sticks to the bunker wall, and is superimposed layer by layer. Finally, a similar shape is formed in the bunker. Rat hole shape, reloading coal will cause blockage of the bunker. Another reason is that the internal friction resistance between the wet coal powder blocks is large, and the external friction resistance between it and the bunker wall is also large. When the coal bunker is filled with coal, its lower part The coal outlet of the conical section forms an arched shape (commonly known as a bridge) that is similar to being stuck and rusted. When the gate is opened to discharge coal, only a very small part can be put down, and the upper coal will block the warehouse due to arching.
In coal mining enterprises in cold northern regions, if cold protection measures are limited in winter, it is easy for the moisture-containing materials to freeze together with the warehouse wall, causing the warehouse to become blocked.
Consequences of warehouse blockage Folded edit this paragraph In order to solve the problem of adhesive blockage in the past few years, people have also thought of many ways, such as laying ceramic tiles on the warehouse walls, laying steel plates, and hitting them with air cannons or electric hammers, but they have failed. Completely solve the problem, and manual poking of coal bunkers often causes personal casualties
Principles of performance of bunker linings Fold edit this paragraph After a lot of research and experiments, we finally decided to use plates as the lining of coal bunkers, taking advantage of the self-lubricating properties of the plates and Non-sticky to reduce the friction coefficient and solve the problem of warehouse clogging.
Installation method of silo lining Folded edit this section Use nails to fix large pieces of sheet material on the silo wall, thus completely solving the problem of coal bunker sticking and blocking. Generally, it is not necessary to cover the entire warehouse. As long as the lower conical section of the coal bunker is placed and the upper round bunker is paved with about 1 meter of lining, the bunker blockage caused by rat holes and arching can be solved.
Precautions for coal bunker linings Fold and edit this section When installing coal bunker linings, the fixed form of the lining must take into account its free expansion or contraction in the event of large changes in operation or ambient temperature. Any fixing method should be designed to facilitate the flow of bulk materials, and the screw head nuts should always be embedded in the liner. For thicker linings, the seams should be cut to size. In this way, changes in length are allowed and a smooth plastic plane is formed in the silo, which is conducive to the flow of materials.
Pay special attention when installing the coal bunker lining
During the installation process, the bolt countersunk plane of the lining must be lower than the board surface
When installing the coal bunker lining product, use per square meter The number of bolts should not be less than strips
, and the gaps between each lining plate should not be larger than that of each lining plate. Appropriate adjustments should be made according to the ambient temperature of the plate during installation)