ALTIN CEVHERLERİNİN KARAKTERİZASYONUNDA KULLANILAN MİKRO ANALİTİK YÖNTEMLER

Year 2018, Volume: 57 Issue: 4, 281 - 298, 01.12.2018

Oktay Celep Ahmet Deniz Baş Ersin Yener Yazıcı Hacı Deveci

https://doi.org/10.30797/madencilik.479520

Abstract

Mikro analitik teknikler, cevher karakterizasyon çalışmalarında yaygın bir şekilde kullanılmaktadır.

Altın cevherlerinin, özellikle refrakter altın cevherlerinin karakterizasyonunda da etkin bir şekilde

kullanılan bu teknikler, doğruluk ve hassasiyeti yüksek oldukça faydalı bilgiler sunmaktadır. Cevher

hakkındaki bu bilgiler doğru proses seçiminin yapılmasına ya da mevcut prosesin etkin bir şekilde

kontrol edilmesine olanak sağlamaktadır. Bu çalışmada, altın cevherlerinin karakterizasyonunda,

mikroskobik (visible) altının belirlenmesinde kullanılan (QEMSCAN) (Quantitative Evaluation

of Mineralogy by Scanning Electron Microscope), MLA (Mineral Liberation Analyzer) gibi SEM

(Scanning Electron Microscopy) temelli geliştirilmiş modern otomatik analiz yöntemlerinin yanı

sıra refrakter altın cevherlerinde mikroskop altında kolayca görülemeyen, çok ince ‘invisible’

altının belirlenmesinde kullanılan EPMA (Electron-Probe Micro-Analysis), μ-PIXE (Microparticle-

induced X-ray emission) ve SIMS (Secondary-Ion Mass Spectrometry) gibi yaygın

olarak kullanılan mikro analitik yöntemler tanıtılmakta ve yapılan güncel çalışmalardan örnekler

sunulmaktadır.

Keywords

Altın cevherleri, Mikro-analiz, QEMSCAN, MLA, EPMA, PIXE, SIMS

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