Running state and heat treatment of coal mill liner

- Nov 29, 2018-

Coal mill lining board in the use process is mainly used to protect the cylinder body, cylinder so you can make a direct hit from grinding medium and material and friction, and at the same time also can use the different forms of lining board to adjust the operating state of the grinding medium, this can increase the grinding medium on material crushing effect, helps to improve the efficiency of the grinding mill, increase production, reduce consumption of metal.

After the material of coal mill lining has passed the ordinary high manganese steel, the strengthened high manganese steel, the alloy white pig iron and so on stage, the middle low alloy steel lining board has obtained the very good development.Low and medium alloy steel liner material adding alloy element Cr, Mo, V, Ti, etc., through their fine grains, promote produce martensite, generate high hard carbides, and often accompanied by RE and proper heat treatment, forming strong martensite + uniform distribution on the bainite high hard alloy carbide ball organization.

In order to reduce the loss of non-wear failure in the production and use of the lining board, the hardness of the lining board should be kept within a certain range under the premise of ensuring its material.