Fray Symposium - Acidic Pretreatment Of Carbonate Feed In Flotation Circuits
CD-FraySymposium_Volume1
CD shopping page

2011-Sustainable Industrial Processing Summit
SIPS2011 Volume 6: Aqueous, Low Temperature & Electrochemical Processing

Editors:Florian K
Publisher:Flogen Star OUTREACH
Publication Year:2012
Pages:764 pages
ISBN:978-0-9879917-5-1
ISSN:2291-1227 (Metals and Materials Processing in a Clean Environment Series)

    Acidic Pretreatment Of Carbonate Feed In Flotation Circuits

    Chmielewski Tomasz1; Andrzej Luszczkiewicz1;
    1WROCLAW UNIVERSITY OF TECHNOLOGY, Wroclaw, Poland;
    Type of Paper: Regular
    Id Paper: 141
    Topic: 14

    Abstract:

    Flotation assisted with acidic non-oxidative leaching of the carbonate feed has been presented. The untreated feed is hardly-upgradeable by standard procedures due to a very fine mineralization and severe problems in liberation of copper-bearing sulphides. The acidic leaching results in chemical effective liberation of copper and valuable met-als sulphide particles finely disseminated in a carbonate gangue. For this leaching a part of the clay-carbonate feed material was separated from the commercial flotation circuit and subjected to leaching with sulfuric acid prior to further flotation. The feed suspension, after non-oxidative leaching, was returned to the flotation circuit in order to separate freshly precipitated gypsum and was finally subjected to cleaning flotation. The combined leaching-flotation process was eventually successfully applied on the in-dustrial scale. In this paper a flotation circuit with acidic leaching of the feed was pre-sented. Flotation indices of the chemically modified feed were compared with the stan-dard system without chemical pretreatment. After several months of operation of the new technological system, a significant increase of copper and other metals recovery was observed along with an increase in concentrate grade. On the basis of technologi-cal experience and additional laboratory investigations application and development of proposed chemical pretreatment and further full hydrometallurgical processing of flota-tion concentrates for improving metals recovery is considered

    Keywords:

    copper ores, carbonate gangue, flotation, leaching

    Full Text:

    Click here to access the Full Text

    Cite this article as:

    Tomasz C and Luszczkiewicz A. Acidic Pretreatment Of Carbonate Feed In Flotation Circuits. In: Florian K, editors. Sustainable Industrial Processing Summit SIPS2011 Volume 6: Aqueous, Low Temperature & Electrochemical Processing. Volume 6. Montreal(Canada): FLOGEN Star Outreach;2012. p..