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    • 3. 发明专利
    • Method of converting the body of a grinding mill
    • GB2484333A
    • 2012-04-11
    • GB201016921
    • 2010-10-07
    • BELL WILLIAM GRAHAM
    • BELL WILLIAM GRAHAM
    • B02C15/00B02C23/00
    • A method of converting a grinding mill having a polygonal-section mill body (2, Fig 1) 20 into a round bodied mill 20, wherein grinding means (4), 10 are located within the mill body (2), 20, and optionally a classifier section (6) is located on top of the mill body (2), 20. The method comprising the steps of (i) removing the classifier section (6) when present, (ii) removing the mill body (20) to expose the grinding means( 4), 10, (iii) optionally, reconditioning or replacing some or all of the grinding means (4), 10, (iv) providing a round mill body 20 around the grinding means 10 and (v) optionally, locating a classifier section (6) on the round mill body 20. The polygonal section mill body (2) may be hexagonal and the round mill body 20 may be cylindrical. A rotatable port ring 22 or other suitable auxiliary part may be present to assist in the conversion and in association with throat 24 may itself comprise a number of openings to permit air to flow from beneath grinding ring 10. An access door 40 may be located in the region of the grinding means. Other elements include (see Fig 1) spin initiator vanes (34), downwardly tapering classifier (6), grinding elements (12), compression loading device (14), vertical delivery pipe (8), classifier housing (6B) and classifier section (6)