Application of K-means and PCA approaches to estimation of gold grade in Khooni district(central Iran)

查看全文 作　　者：Neda Mahvash [1]Mohammadi;Ardeshir [1]Hezarkhani;Abbas [1]Maghsoudi

机构地区：[1]Department of Mining and Metallurgical Engineering,Amirkabir University of Technology

出　　处：《Acta Geochimica》索引2018年第37卷第1期,共11页

摘　　要：Grade estimation is an important phase of mining projects, and one that is considered a challenge due in part to the structural complexities in mineral ore deposits.To overcome this challenge, various techniques have been used in the past. This paper introduces an approach for estimating Au ore grades within a mining deposit using k-means and principal component analysis(PCA). The Khooni district was selected as the case study. This region is interesting geologically, in part because it is considered an important gold source. The study area is situated approximately 60km northeast of the Anarak city and 270km from Esfahan. Through PCA, we sought to understand the relationship between the elements of gold,arsenic, and antimony. Then, by clustering, the behavior of these elements was investigated. One of the most famous and efficient clustering methods is k-means, based on minimizing the total Euclidean distance from each class center. Using the combined results and characteristics of the cluster centers, the gold grade was determined with a correlation coefficient of 91%. An estimation equation for gold grade was derived based on four parameters: arsenic and antimony content, and length and width of the sampling points. The results demonstrate that this approach is faster and more accurate than existing methodologies for ore grade estimation. 关键词：K-means method CLUSTERING Principal component analysis(PCA) ESTIMATION GOLD Khooni district

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Application of K-means and PCA approaches to estimation of gold grade in Khooni district(central Iran)

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