Discerning mineral association in the near infrared region for ore sorting

Q1 Earth and Planetary Sciences

International Journal of Mineral Processing Pub Date : 2017-09-10 DOI:10.1016/j.minpro.2017.06.008

Shekwonyadu Iyakwari , Hylke J. Glass , Stephen E. Obrike

{"title":"Discerning mineral association in the near infrared region for ore sorting","authors":"Shekwonyadu Iyakwari , Hylke J. Glass , Stephen E. Obrike","doi":"10.1016/j.minpro.2017.06.008","DOIUrl":null,"url":null,"abstract":"<div><p>The preconcentration or early rejection of gangue minerals in mineral processing<span><span> operations is investigated using sorting, based on interpretation of near infrared sensor data collected from ore particles. The success of sorting depends on the distribution of minerals between particles, the arrangement or association of minerals within particles and the ability of near infrared to distinguish relevant minerals. This paper considers minerals association, using common alteration minerals found in a hydrothermally-formed </span>copper ore, with sensitivity in the near infrared region. The selected NIR-active minerals were arranged along the view of NIR line scanner to stimulate adjacent natural minerals association.</span></p><p>It was found that spectral dominance may depend on minerals near infrared sensitivity and or the position of a mineral along the NIR scanner line of view. Analysis also revealed that only free occurring waste mineral spectra can be targeted for discrimination as tailings. Where spectra appeared mixed, such spectra are best considered products.</p></div>","PeriodicalId":14022,"journal":{"name":"International Journal of Mineral Processing","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2017-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.minpro.2017.06.008","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Mineral Processing","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S030175161730145X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Earth and Planetary Sciences","Score":null,"Total":0}

引用次数: 3

Abstract

The preconcentration or early rejection of gangue minerals in mineral processing operations is investigated using sorting, based on interpretation of near infrared sensor data collected from ore particles. The success of sorting depends on the distribution of minerals between particles, the arrangement or association of minerals within particles and the ability of near infrared to distinguish relevant minerals. This paper considers minerals association, using common alteration minerals found in a hydrothermally-formed copper ore, with sensitivity in the near infrared region. The selected NIR-active minerals were arranged along the view of NIR line scanner to stimulate adjacent natural minerals association.

It was found that spectral dominance may depend on minerals near infrared sensitivity and or the position of a mineral along the NIR scanner line of view. Analysis also revealed that only free occurring waste mineral spectra can be targeted for discrimination as tailings. Where spectra appeared mixed, such spectra are best considered products.

查看原文本刊更多论文

近红外区矿物组合识别与分选

根据对从矿石颗粒收集的近红外传感器数据的解释，利用分选方法研究了选矿作业中脉石矿物的预选或早期剔除。分选的成功与否取决于矿物在颗粒之间的分布、矿物在颗粒内的排列或结合以及近红外分辨相关矿物的能力。本文利用热液形成的铜矿石中常见的蚀变矿物，在近红外区域考虑了矿物组合的敏感性。选定的近红外活性矿物沿着近红外线扫描仪的视图排列，以刺激邻近的天然矿物结合。发现光谱优势可能取决于矿物的近红外灵敏度和或矿物沿近红外扫描线的位置。分析还表明，只有游离的废矿物光谱才能作为鉴别尾矿的目标。当光谱出现混合时，这种光谱最好被认为是产物。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Mineral Processing 工程技术-工程：化工

CiteScore

3.02

自引率

0.00%

发文量

审稿时长

11.1 months

期刊介绍： International Journal of Mineral Processing has been discontinued as of the end of 2017, due to the merger with Minerals Engineering. The International Journal of Mineral Processing covers aspects of the processing of mineral resources such as: Metallic and non-metallic ores, coals, and secondary resources. Topics dealt with include: Geometallurgy, comminution, sizing, classification (in air and water), gravity concentration, flotation, electric and magnetic separation, thickening, filtering, drying, and (bio)hydrometallurgy (when applied to low-grade raw materials), control and automation, waste treatment and disposal. In addition to research papers, the journal publishes review articles, technical notes, and letters to the editor..