COMPARISON OF METHODS FOR THE MEASUREMENT OF LINEAR GRADE DISTRIBUTIONS IN LIBERATION ANALYSIS

被引：10

作者：

LIN, CL

MILLER, JD

HERBST, JA

RAJAMANI, K

机构：

[1] Univ of Utah, Salt Lake City, UT,, USA, Univ of Utah, Salt Lake City, UT, USA

来源：

PARTICLE CHARACTERIZATION | 1987年 / 4卷 / 02期

关键词：

IMAGING TECHNIQUES - Image Analysis - PARTICLE SIZE ANALYSIS;

D O I：

10.1002/ppsc.19870040116

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

An evaluation was made to assess whether linear grade distribution measurements determined from polished sections of randomly oriented particles can be used to estimate the extent of liberation for multiphase particles of specified size. Two techniques, optical image analysis and microprobe analysis, were used to establish the linear grade distribution for samples of different composition from a copper porphyry flotation circuit and these two were found to be equivalent. An estimate of the variance in the experimental data was made by measuring the average chalcopyrite content in these samples and comparing the results to chemical assays. The statistical significance of the linear grade distribution data obtained by optical image analysis was assessed and, for a given accuracy, the number of particles required to obtain an unbiased representation of the sample was determined.

引用

页码：78 / 82

页数：5