Surface behavior of iron sulfide ore during grinding with alumina media

P. Martin Reyes, B. Elia Palacios, C. Francisco Patifio, G. Ramiro Escudero, G. Mizraim Uriel Rores, D. Iván A. Reyes, Laura Angeles Palazuelos

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This research was conducted to study the oxidation and surface modification of pyrite in an inert mill and alumina grinding media at different pH values. The extent and progress of the oxidation function of milling time, by measuring some physicochemical variables, zeta potential (ZP), infrared analysis and monitoring. The results indicate pyrite oxidation during grinding, releasing iron and sulfur ions to the solution increasing its concentration with the initial pH and the milling time, the ORP and DO decrease the grinding time, on the other hand presents negative values ZP pH of 9, 11 and 12, whereas at pH 5, 7 and 13, the ZP is positive, FTIR generally detect the presence of free sulfate ion molecule 1084 cm-1, goethite with the absorption band at about 794 cm", also occurs in a band assigned to 470 cm-1 lepidocrocite oxy iron hydroxide γ-FeOOH, nucleated species or fonned during milling.

Original languageEnglish
Title of host publicationTMS Annual Meeting
EditorsShadia Jamil Ikhmayies, Shadia Jamil Ikhmayies, Bowen Li, John S. Carpenter, John S. Carpenter, Jiann-Yang Hwang, Jiann-Yang Hwang, Sergio Neves Monteiro, Jian Li, Donato Firrao, Donato Firrao, Donato Firrao, Donato Firrao, Mingming Zhang, Zhiwei Peng, Zhiwei Peng, Zhiwei Peng, Juan Pablo Escobedo-Diaz, Juan Pablo Escobedo-Diaz, Chenguang Bai
PublisherMinerals, Metals and Materials Society
Pages761-769
Number of pages9
EditionCONFCODENUMBER
ISBN (Electronic)9781119264392
StatePublished - 2016
Externally publishedYes
EventCharacterization of Minerals, Metals, and Materials 2016 - TMS 2016: 145th Annual Meeting and Exhibition - Nashville, United States
Duration: 14 Feb 201618 Feb 2016

Publication series

NameTMS Annual Meeting
NumberCONFCODENUMBER
Volume0

Conference

ConferenceCharacterization of Minerals, Metals, and Materials 2016 - TMS 2016: 145th Annual Meeting and Exhibition
Country/TerritoryUnited States
CityNashville
Period14/02/1618/02/16

Keywords

  • Alumina
  • Grinding
  • Oxidation
  • Pyrite
  • Surface

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