Mineral Grinding & Processing Plant Machinery Solutions

Run-of-mine quartz, feldspar, calcite or talc is crushed and screened down to a mill feed size. Lumps are hand-sorted at this stage where colour or purity decides the grade.

Ore carrying clay or surface dirt is washed and then dried, because dry grinding needs dry feed. Dried material is held in bins ahead of the mills.

Many mineral grades are sold on low iron content, so tramp iron and iron-bearing grains are taken out ahead of grinding. Density-based separation removes the heavier unwanted particles.

The mineral is ground down and then micronised to the fine powder that paint, plastics and ceramic buyers specify. The mill is chosen to suit the hardness of the mineral being handled.

Ground powder is classified in air to the required fineness, with coarse material returned to the mill. Sieving gives a final check on top size before packing.

Powder is weighed into bags or bulk bags, closed and stacked. Grades are kept apart through packing so that one does not contaminate another.

Fine mineral powder becomes airborne easily, so mills, classifiers and packing points are kept under extraction. Recovered powder is returned to the product stream.