At Linings we care that our products are the best option for our customers, so we have specialized technology to be able to manufacture innovative products that bring a series of benefits to our customers.

This 13% increase in tonnage was controlled in order to keep the grinding reduction ratio and the particle size of the final product unchanged. Learn about this success story thanks to our PolywearSC composite shell liners products.

Download our success story in PDF

 Download our success story in PDF

In this success story you will learn how we developed an unloading system with curved unloaders, being the pioneers in proposing this innovative design.

Its known that the caps of a mill are not decisive for grinding, as shell liners can be to a certain extent. However, it is important that the cap liners comply as far as possible with a stable duration time, which may be equal to the useful life of the shell liners or half of their useful life. In this way, plant stoppage interruptions due to cover replacement are avoided. In a 12x16 all-steel lined ball mill, the customer had problems with their caps that he had to make continual changes to, as the life of the feed cap was around 3 months and the discharge cap around 3 months. 6 months. Linings developed its composite cover model for this client, which has been able to deal with the problem of duration: supply cover between 5 and 6 months, discharge cover around 11 months. This has meant a 90% increase in the duration of their caps, thus having fewer stops during their campaign. In addition to this, as the liners are lighter than pure steel designs, a reduction in man-hours per installation and lower energy consumption is achieved.

Liners are not only part of the mill casing protection, but also play an important role in grinding efficiency. Cases have been studied where it is developed through simulations and experimental verification that composite mill Liners (which are a part of rubber and steel materials) are considered a new trending technology in the mining industry. When a mill migrates from Steel Liners to composite mill Liners, it normally reduces its weight between 35% to 55%, generating less power consumption (Kw) in the mill and reducing its energy consumption (Mwh) by around 4% to 7%. . In the case of Peruvian mining, the value of energy is around 0.055 USD/Kwh; while in Chile it has a value around 0.12USD/Kwh. composite mill Liners help reduce energy consumption in grinding and it is up to each country to consider how they manage their energy cost factor.

Case study

Place of installation: Chute of fines from the Trommel of the SAG Mill.