The use of radioactive tracers to measure mixing regime in semi-autogenous grinding mills

被引：6

作者：

Vinnett, L. ^{[1
,2
]}

Contreras, F. ^{[3
]}

Lazo, A. ^{[2
]}

Morales, M. ^{[3
]}

Diaz, F. ^{[4
]}

Waters, K. E. ^{[1
]}

机构：

[1] McGill Univ, Dept Min & Mat Engn, Montreal, PQ, Canada

[2] Univ Tecn Federico Santa Maria, Dept Ingn Quim & Ambiental, Valparaiso, Chile

[3] Antofagasta Minerals, Minera Los Pelambres, Santiago, Chile

[4] Trazado Nucl & Ingn Ltd, Santiago, Chile

来源：

MINERALS ENGINEERING | 2018年 / 115卷

关键词：

SAG mills; Residence time distribution; Radioactive tracer; Mixing; RESIDENCE TIME DISTRIBUTION;

D O I：

10.1016/j.mineng.2017.10.006

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The radioactive tracer technique was used to evaluate the liquid and solid (fine and coarse) transport in two industrial semi-autogenous grinding (SAG) mills. The residence time distribution (RTD), along with the mean residence times, was obtained. The residence times for the liquid and fine solid were equivalent, approximately 2 min, which implies non-significant segregation in this size class. The residence time for coarse solids was approximately 4 min. The RTD was modelled by N perfectly mixed tanks in series, in which the number of equivalent mixers was approximately 2 for liquid and fine solids and approximately 3 for the coarse solids. The coarse particles required additional time to pass the grate discharge restriction, which also favoured the mixing.

引用

页码：41 / 43

页数：3

共 46 条

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