Method and device for fine grinding of mineral particles

Solid material comminution or disintegration – Processes – Plural successive comminuting operations

Reexamination Certificate

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C030S184000

Reexamination Certificate

active

07093782

ABSTRACT:
A method for fine grinding of mineral particles consists of producing by atomization pellets, made from steel with a high carbon content, or cast iron, with a granular size range less than 15 mm and mixing the pellets with balls, made from steel or cast iron with dimensions between 20 mm and 120 mm, in a rotating grinding mill, the proportion by weight of pellets depending on the granular size of the mineral particles for grinding and the desired reduction ratio.

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Prof. Dr. Ing. E. Forssberg et al., “Dry, Fine Grinding of Dolomite with the Sala Agitated Mill SAM 7.5—Effects of Grinding Media and Grinding Additive”, Aufbereitungs-Technik 36, No. 5, pp. 211-217, 1995.

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