Failure of ball mill liner what ?

Article source：

Failure of ball mill liner what ?
Ball mill liner 's main role is to protect and promote the mill mill shell diarrhea off doing exercise balls hit to punch crushing mill material extruded material . To achieve the ball right punch hit mill grinding material features, requirements for ball mill liners must have sufficient capacity to enhance and disturbance . Research shows that in the overflow mill , when the mill cylinder liner height difference between peaks and troughs of the maximum diameter of the ball about 60% , moderate intensity exercise ball mill , then the mill is in top working condition .
We use Φ5.03m × 8.5m overflow mill , the largest ball diameter 80mm, mill cylinder liner height difference between the peaks and troughs of only 40mm. In this case , in the mill running, ball liner is difficult to achieve an effective promotion. At this time the mill ball movement intensity decreased , which in turn leads to the mill for material crushing efficiency. At the same time due to liner peaks and valleys elevation of non-compliance , resulting in ball movement and simplified relative slip lining violent existence of the problem led to the mill liner wear furrows phenomena, the existence of the problem , not only increase the rapid wear of the mill liners , but also because the furrow bottom liner will be the first to be worn out causing early retirement .
In the present mill cylinder liner design process , designers simply think mill liner wear a uniform wear , so the back of the liner for the arc-shaped slot design vacancies vacancy . The fact of the condition is not true. In the mill operation, the liner at the top of the peak -side ball to enhance the reaction process of being particularly strong , so the parts will withstand strong tool wear , and therefore the most severe wear . Lining the back arc-shaped groove design to make space liner thickness substantially uniform shape , crest rapFine impact crusherid wear of the side at the top bit will cause the site was first worn liner early retirement .
Most of the traditional selection of high manganese steel mill liners , using its unique hardening characteristics to achieve the purpose of its wear resistance . In the grinding conditions, can not be  Single tube cooling machinesufficiently hardened to make high manganese steel , wear resistant steel is generally used in high strength and toughness , hardness HRC45-60 generally between the lower middle of the liner hardness , wear resistance and therefore general . If the body can increase the hardness liner , the liner wear resistance , service life will be greatly improved.