Among the cast materials used for linings are Ni-Hard. chrome-molybdenum steel, and manganese steel. Rolled alloy steel plate with lifter bars is available Rod mill liners are subjected to severe impact. Premature breakage and scrap loss are reduced by correct selection of liners for the specific gnnd-mg duty. Additional benefit
Allow me to compare: Ball mills can be of the overflow or of the grate discharge type. Overflow discharge mills are used when a product with high specific surface is wanted, without any respect to the particle size distribution curve. Overflow discharge mills give a final product in an open circuit.
Three products are supplied with the KK-8 for optimizing and extending the life of the kiln liner: Liner Restore, Armor Coat and Spill Stop. All three products must be kept from freezing, or they will become unstable and unusable.
Restored Kiln Sections
Liner Restore is an alumina silicate based viscous material that
This design of SAG mill feed chute lasted 9 months seeing 90,000 TPD. It is 600 brinell chrome steel.
With the big liners on the bottom of the chute you need to get a Chevron cast into the top to push the feed out to the sides for the first little while and then as the chevron wears it will start to come back
Here is a home-made tool to measure or obtain a fingerprint of your SAG and Ball Mill Liner wear pattern/profile. Each time you shut down, get a profile and build a wear-life over time database to better predict your next reline job or monitor improvements to your liner design.
Simple Tool to Track Liner Wear Pattern
Here is a great paper on The Selection and Design of Mill Liners.
When are steel liners better than rubber/poly-met liners in a SAG mill or Ball Mill? Let’s compare! Rubber Liners are better for abrasion grinding ie: cascade action but not for cataract mills.
The graph below shows the increased operating cost of rubber and steel liners as the grinding ball size increases. Larger mill, larger ball…