A method to calculate the neutralization potential of mining wastes

被引：124

作者：

Lawrence, RW ^{[1
]}

Scheske, M ^{[1
]}

机构：

[1] UNIV BRITISH COLUMBIA, DEPT EARTH & OCEAN SCI, VANCOUVER, BC V6T 1Z4, CANADA

来源：

ENVIRONMENTAL GEOLOGY | 1997年 / 32卷 / 02期

关键词：

acid rock drainage; mineralogy; neutralization; norm calculations;

D O I：

10.1007/s002540050198

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The determination of neutralization potential (NP) of mining wastes is an essential part of waste characterization for acid rock drainage (ARD) prediction, Interpretation of NP values requires consideration of the mineralogical composition of the waste. Different minerals can neutralize acid drainage at different rates and in different pH ranges. The test conditions of widely used laboratory procedures to determine NP do not distinguish between such differences and overestimation of NP can often result. A simple procedure is proposed in which the effective NP is calculated based on mineralogical composition and the relative reactivities of component minerals, Minerological composition is calculated from easily determined analytical values using a CIPW normative procedure, Comparison of calculated NP values for 92 samples with experimentally determined values from tests designed to prevent the overestimation of NP indicates that the method is successful in Predicting an effective NP value In mast cases, The procedure is considered to be a cost-effective means of providing confident routine ARD prediction when used in combination with other tests and analyses.

引用

页码：100 / 106

页数：7

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