Paper published in a book (Scientific congresses and symposiums)
DEPHOSPHORIZATION OF LIMONITIC CONCENTRATE BY ROASTING, ACID LEACHING AND MAGNETIC SEPARATION
Ionkov, Krassimir; Gaydardzhiev, Stoyan; Corea de Araujo, Armando et al.
2011In Holmes, M. (Ed.) Proceedings of the Iron Ore 2011 International Conference
Peer reviewed
 

Files


Full Text
Perth2011_final.pdf
Publisher postprint (510.63 kB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
dephosphorisation; iron ore; minerals
Abstract :
[en] The oolitic iron ore reserves in Lisakovsky, Northwest Kazakhstan represent a quite challenging deposit both from technological and from resource point of view. The difficulties in processing such type of ore are connected with the extremely fine dissemination of phosphorus and gangue minerals inside the oolitic formations. The goethite crystals are cemented in their structure by aluminosilicates with quartz and other gangue minerals and dissemination is so fine that they are not separable by physical methods. The laboratory tests performed in direction of dephosphorisation have shown that the combination of alkaline roasting followed by low intensity magnetic separation and acid leaching enables the obtaining of high grade iron concentrate. The magnetic separation performed ahead of leaching has been efficient by means of buffering the high pH via washing out the soluble salts and the excess of bases and applied after leaching has facilitated the removal of secondary liberated gangue minerals in the non-magnetic fraction. As a consequence, phosphorous content has been dropped to a more acceptable for the ferrous metallurgy levels while iron grade and recovery have reached respectively 61.6 and 80.8 percent.
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Ionkov, Krassimir ;  Université de Liège - ULiège > Département Argenco : Secteur GeMMe > Traitement et recyclage des matières minérales
Gaydardzhiev, Stoyan  ;  Université de Liège - ULiège > Département Argenco : Secteur GeMMe > Traitement et recyclage des matières minérales
Corea de Araujo, Armando
Kokal, Harold
Pirson, Arnaud
Bastin, David ;  Université de Liège - ULiège > Département Argenco : Secteur GeMMe > Génie minéral et recyclage
Language :
English
Title :
DEPHOSPHORIZATION OF LIMONITIC CONCENTRATE BY ROASTING, ACID LEACHING AND MAGNETIC SEPARATION
Publication date :
July 2011
Event name :
Iron Ore 2011, International Conference, Perth 11-13 july, 2011
Event organizer :
Australian Institute of Mining and Metallurgy
Event place :
Perth, Australia
Event date :
11-13 July, 2011
Audience :
International
Main work title :
Proceedings of the Iron Ore 2011 International Conference
Editor :
Holmes, M.
ISBN/EAN :
978 1 921522 43 7
Pages :
445-452
Peer reviewed :
Peer reviewed
Available on ORBi :
since 19 August 2011

Statistics


Number of views
265 (16 by ULiège)
Number of downloads
9 (3 by ULiège)

Bibliography


Similar publications



Contact ORBi