Industrial milling for minerals.
Hardened, abrasion-grade builds for the toughest feeds in the catalogue. Closed-circuit with classifier when you need a tight upper cut on a mineral that would destroy a standard impact mill.
Wear, throughput, and the trade-off.
Mineral feeds (Mohs 4 – 9) destroy contact wear parts faster than any other industry. THOR mills for minerals ship with WC inserts, hardened-steel screens and oversized motors so the wear-part change interval lines up with the maintenance shutdown schedule, not the other way around.
Materials we run every week.
Limestone, dolomite, gypsum, kaolin, talc, silica (Mohs 7 — the hard one), barite, fluorspar, perlite, magnesite. For Mohs 8 – 9 feeds (corundum, alumina) we recommend a Ball Mill — impact mills are a false economy.
When to add the classifier.
Mineral grinding rarely produces a usable distribution open-circuit. Pair the mill with an Air Classifier set to your customer's upper-cut spec; oversize returns to the mill, fines drop to bagging. Saves 30 – 50% of the unit energy compared with single-pass grinding to the same cut.
Which mill for minerals.
Hammer Mill for soft-to-medium minerals (limestone, gypsum, talc) at high tonnage. Ball Mill for Mohs 7+ feeds (silica, alumina). Air Classifier downstream is standard, not optional.
Recommended mills for this sector.
The platforms we most often deploy here. Each has documented pilot data on the materials above.