Internal liners
Wear plates in the areas of greatest impact and friction, replaceable without changing the whole machine.
Industries
Minerals
Equipment built to withstand the abrasion of hard minerals, with protection where wear actually happens.
Our approach
When the product itself wears the equipment
In minerals the challenge is usually neither temperature nor corrosion: it is abrasion. A hard mineral passing through a drum or a mill for years wears down the flights, the liners and the drum shell if the design does not allow for it from the start. We process everything from sand and clay to bauxite, feldspar and pyrite, each with its own level of demand.
Hardness and abrasiveness
Not all minerals wear the same
A mineral’s approximate hardness (Mohs scale, 1 to 10) gives an indication of how much wear it can cause in the equipment. Indicative values from general mineralogy, not laboratory measurements of a specific product.
Talc
~1 (very soft)
Clay
~2
Bauxite
~1-3 (varies with composition)
Sepiolite
~2-2.5
Limestone
~3
Dolomite
~3.5-4
Magnesite
~4
Feldspar
~6
Pyrite
~6-6.5 (the hardest in this selection)
Indicative values from general mineralogy on the Mohs scale (1-10), not laboratory measurements of a specific product: the actual hardness depends on the exact composition and on any impurities present.
Protection
How we protect the equipment from wear
Wear-resistant steel in lifters
The lifting flights, which take the mineral’s direct impact on every revolution, are made in harder steels where the product justifies it.
Geometry designed for the product
The angle and layout of the flights are set by how the particular mineral behaves, not by a generic design.
Planned replacement
Wear components are, by definition, consumables. We design the equipment so that replacing them is quick and stops the line no longer than it has to.
Visible wear
Already seeing wear? You may not need to replace the equipment
Worn flights, liners and drum shells don’t always mean the equipment has reached the end of its life. In most cases they can simply be replaced as spare parts.
Technologies applied
Equipment we use in minerals
Projects
Minerals in practice
Is your mineral wearing the equipment out early?
Tell us which mineral you process and how the current equipment is wearing, and we’ll propose a solution.