Patent · US Expired

Enhanced ore comminution process and apparatus

US7341212B2 · kind B2 · utility

4Cited by

6References

8Claims

0Family size

Assignees

LOESCHE GMBH · DE
Anglo American Research Laboratories (PTY) Ltd · ZA

Inventors

Richard Michael Viljoen · Midrand, ZA
Jan Tjeerd Smit · Edmonton, CA
Udo Meyer · Herrenberg, DE
Carlos Felipe Lozano-Vallejos · Schreiber, CA

Key dates

Filing date	May 28, 2003
Grant date	Mar 11, 2008
Priority date	—
Expiry date	Sep 26, 2023

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB02C2015/002
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method and apparatus for comminuting particulate material by inter-particle comminution in a bed of particles are disclosed. The apparatus includes a vertical roller mill with a horizontal grinding table rotating about a verticle mill axis. At least one grinding roller presses resiliently against a bed of particulate material on the grinding track and applies a compressive force. The geometry of the mill is such that the roller engages the bed of particulate material with a substantially pure rolling action. This minimises shear forces applied to the particle bed and minimises the reduction of fines.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.