A study of charge motion in rotary mills .3. Analysis of results

被引：25

作者：

Powell, MS ^{[1
]}

Nurick, GN ^{[1
]}

机构：

[1] UNIV CAPE TOWN,DEPT MECH ENGN,RONDEBOSCH 7700,SOUTH AFRICA

来源：

MINERALS ENGINEERING | 1996年 / 9卷 / 04期

关键词：

autogenous grinding; comminution; grinding; SAG milling;

D O I：

10.1016/0892-6875(96)00026-X

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Results of experiments investigating the motion of balls deep within the charge of a rotary grinding mill are presented. The true centre of mass of the entire charge was determined. The angle of repose of the charge was found to be uniquely defined by the centre of circulation of the charge. The angle of the cascading region is determined by the angle of repose of the charge. The inner part of the cascading region and the toe region are responsible for the majority of the grinding work. The face angle of the lifter bars was found to influence both the maximum impact energy and the amount of work done by the charge. Radial segregation of the balls rakes place throughout the charge according to both the mass and size of the balls, even in a mill with smooth end faces.

引用

页码：399 / 418

页数：20

共 11 条

[1]

DAVIES A, 1993, COMMUNICATION MAR

[2]

FAHRENWALD AW, 1931, AIME, V375

[3]

GOW AM, 1930, AIME T MILLING METHO, P51

[4]

HAULTAIN HET, 1922, CIM T, V25, P276

[5]

JACKSON OAE, 1965, 7 INT MIN PROC C MAR, P557

[6]

MORRELL S, 1992, T I MIN METALL C, V101, pC25

[7] A study of charge motion in rotary mills .2. Experimental work [J].

Powell, MS ;

Nurick, GN .

MINERALS ENGINEERING, 1996, 9 (03) :343-350

[8] A study of charge motion in rotary mills .1. Extension of the theory [J].

Powell, MS ;

Nurick, GN .

MINERALS ENGINEERING, 1996, 9 (02) :259-268

[9]

POWELL MS, 1991, INT J MIN PROCES, V31, P193

[10]

ROGOVIN Z, 1989, MIN METALL PROCE FEB, P18

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