A study of charge motion in rotary mills .2. Experimental work

被引：43

作者：

Powell, MS

Nurick, GN

机构：

[1] MINTEK,RANDBURG 2125,SOUTH AFRICA

[2] UNIV CAPE TOWN,DEPT CHEM ENGN,RONDEBOSCH 7700,SOUTH AFRICA

来源：

MINERALS ENGINEERING | 1996年 / 9卷 / 03期

关键词：

autogenous grinding; comminution; grinding; SAG milling;

D O I：

10.1016/0892-6875(96)00018-0

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The motion of balls deep within the charge of a rotary grinding mill was investigated, using novel techniques to track the balls. These included X-ray filming of both the front and side views of a transparent mill, and gamma-camera filming of a radioactive ball. Analysis of the trajectories of the balls revealed several phenomena in the milling action that have hitherto not been reported in the literature. These include: the non-rotation of the balls which indicates that the grinding does not take place by rotary nipping of the ore between the balls; charge dilation with increased mill speed; longitudinal migration of the balls; further insights into charge segregation; spiralling action of the balls; smooth paths of balls in the bulk of the charge.

引用

页码：343 / 350

页数：8

共 9 条

[1]

DAVIS EW, 1919, AIME T, V61, P250

[2]

MARECHAL B, 1968, TR1199

[3]

MCIVOR RE, 1983, MINING ENG JUN, P617

[4] THE EFFECT OF LINER DESIGN ON THE MOTION OF THE OUTER GRINDING ELEMENTS IN A ROTARY MILL [J].