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Increased liberation and flotation performance of bulk copper flotation concentrate following its regrinding in a stirred media mill
Stefanov, Alexander; Grossman, Karsten; Peuker, Urs et al.
2021In Proceedings of the XXX International Mineral Processing Congress
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Keywords :
Rostar mill; ultrafine milling; copper ore; liberation
Abstract :
[en] Flotation concentrate originating from the Asarel-Medet porphyry copper mining and processing complex in Bulgaria has been subjected to regrinding using a Ro-Star mill and the effects from which on the downstream metallurgical behavior are discussed. Particularly the effect on the liberation degree was studied through an optical microscopy and MLA-SEM automated mineralogy. On the other side, copper selective flotation of the reground bulk concentrate was realized to evaluate the anticipated metallurgical improvement. Process parameters such as involvement of prior hydrocycloning and variation of collector dosage have been evaluated. Within a 2-minute residence time inside the Ro-Star mill, an improved liberation degree of the copper bearing minerals has been observed. As a consequence, enhanced copper recovery and selectivity against pyrite was noted. It has been found, that in order to guarantee efficient flotation of the resulting ultrafine particles a modified flotation regime (i.e. changing collector suite and dosages) should be followed.
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Stefanov, Alexander;  Aurubis - Bulgaria
Grossman, Karsten;  UVR-FIA Freiberg
Peuker, Urs;  TUBAF - Freiberg > MVTAT
Stoilov, Ventzislav;  Asarel-Medet , Bulgaria
Angelov, Angel;  Asarel-Medet, Bulgaria
Gaydardzhiev, Stoyan  ;  Université de Liège - ULiège > Département ArGEnCo > Traitement et recyclage des matières minérales
Language :
English
Title :
Increased liberation and flotation performance of bulk copper flotation concentrate following its regrinding in a stirred media mill
Publication date :
January 2021
Event name :
Proceedings of the XXX International Mineral Processing Congress
Event organizer :
SAIMM
Event place :
Cape Town, South Africa
Event date :
18-22 October 2020
Audience :
International
Main work title :
Proceedings of the XXX International Mineral Processing Congress
Publisher :
The Southern African Institute of Mining and Metallurgy, Johannesburg, South Africa
ISBN/EAN :
978-1-928410-21-8
Pages :
1411-1422
Peer reviewed :
Peer reviewed
Available on ORBi :
since 21 March 2021

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