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Talc Production

General Process Information

Talc rocks are excavated at the mine and are delivered to the warehouse at the start of the milling process.

Sorting the different talc ores according to their talc content and brightness is a key phase of the production process. Techniques include state-of-the-art laser and image analysis technology, friction sorting or flotation techniques.
Before flotation process the ore goes through primary grinding in ball mill to obtain milled ore, impurities are removed in a cascade of flotation cells.

Talc concentrate slurry is thickened in settling tanks (slurry) before drying.
The concentrate Talc is dried by pressure filters. The resulting filter cake is an intermediate product.
To obtain fine talc the talc cake goes through a jet milling process, resulting in a fine powder talc that is stored before packing or shipping in bulk.

Diagram of a Talc Production Process

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Taking the guesswork out of bulk solids measurements