Method and device for fine grinding of mineral particles
AssigneeWheelabrator-Allevard
InventorsPhilippe Artru, Merien Ould Rouis, Edouard Landao
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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.
Claims11
Fine grinding method of mineral particles by means of a rotary grinding mill containing grinding bodies comprising steel or cast iron balls having dimensions between 20 mm and 120 mm, wherein the method comprises:
- providing atomized steel pellets with a high carbon content or of cast iron pellets in a granulometry range remaining lower than 15 mm;
- and
- mixing the pellets with the balls inside the grinding mill in a preset weight proportion depending on the granulometry of the mineral particles to be ground and on a reduction ratio required between an input feed and a final product and fine grinding the mineral particles.
Dependencies are inferred from the claim text.