There are two factors that can help to maximize the life of liners:
Break Them In
Breaking-in the manganese in a cone crusher liner will gradually make the liner material more dense and hard, in a process called “work-hardening”. So, when you replace liners avoid going back to full production levels right away.
Instead, here’s what we recommend: when you install a new set of liners, operate the crusher at 50% of its full load capacity for six hours. After six hours, open up to 75% of capacity for two hours. At that point, the manganese should have solidified to its maximum density. Then, you can go to full operation, and your liners will function more efficiently.
Keep a Continuous Feed
Sometimes, starting and stopping feed to a crusher is unavoidable, but liners will last longer with fewer interruptions in feed. The concentric spinning motion, inherent in the head of a cone crushers while it’s not crushing, requires resistance to stop. When the feed is re-introduced, resistance is applied and the spinning motion comes to an abrupt halt while beginning to slowly rotate the opposite direction.
This start/stop process prematurely removes liner material and can shorten normal wear life. So, avoid stops as much as possible. Continuous feed reduces the amount of abrupt halts and improves the life of liners.