News Date:2015-09-14 15:28:55
Ball mill is basically used in mining processing, and clients from many countries may complain that the service life of ball mill liner plate is too short. Today, Xinxiang Great Wall will explain why the ball mill liners are so easy to be damaged and tell about methods to prolong the service life of ball mill liner boards.
1. Influence of grinding medium
The ball mill often grind all kinds of raw materials, they are mining materials(copper ,manganese ore, chrome ore, manganese ore) ,all kinds of non-metallic minerals (limestone, granite, green stone) and coal used by electricity industry. The hardness index of medium decided the performance of ball mill liners, the higher hardness of lining board, the shorter of service life, on the contrary, the using cycle of the liner will grow.
2. Influence of operation
1) If there is defect, for example, bolt looseness and drops, individual liners falls, timely repair is needed. If the broken parts are not changed in time, defects will gradually spread to other section of the machine, making larger damages to other lining board and cylinder.
2)If situations that is with non-uniformly feeding, improper adjustment and empty cavity working appeared, the steel ball would directly rub and hit on the cylinder and other liner boards, this kind of circumstance would greatly increase the wear down opportunities of the liner plate and steel ball, even caused both destruction. Of cause, it is a very terrible operating style.
Influence of liner materials
According to the physical properties of the liner plate, the main parameters that affect anti-wear effect are matching rate between hardness and impact toughness, the higher the hardness of the material, the better anti-wear ability, and they may achieve a direct ratio ,making the balls fall like waterfall and impact on the liner board in operation process. The impact strength is decided by the size of the steel balls and the cylinder.
Influence of design, manufacture and installation technology
Liner board had two functions: the first one is cylinder protection. The other is to lift the steel ball to a demand height at a specific speed, making steel balls fall like a waterfall and achieve the ideal effect of grinding. If the quality of liner board is too poor and uneven, or is coarsely casted, when installation, misfit between liners and cylinders, substandard mechanical properties and chemical ingredients are all factors that affects the normal operation of the ball mill.
Xinxiang Great Wall Machinery Co., Ltd. is a professional manufacturer and supplier of grinding system in China with advanced technology and professional team. If you are interested in ball mill, please contact Xinxiang Great Wall Machinery directly.
