Development and verification of a mathematical model for variations of the specific surface area of mineral powders during intensive milling

被引：10
作者：
Bafghi, M. Sh. [1 ]
Emami, A. H. [1 ]
Zakeri, A. [1 ]
Khaki, J. Vahdati [2 ]
机构：
[1] Iran Univ Sci & Technol, Sch Mater & Metall Engng, Tehran 16846, Iran
[2] Ferdowsi Univ Mashhad, Fac Engn, Mashhad, Iran
来源：
POWDER TECHNOLOGY | 2010年 / 197卷 / 1-2期
关键词：
Modeling; Milling; Specific surface area; Minerals; Chalcopyrite;
D O I：
10.1016/j.powtec.2009.08.025
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
In order to describe temporal evolution of BET surface area of a mineral substance during an intensive milling process, a mathematical model in the form of S = a + b e-(mt) + c e(-nt) has been developed based oil well-established phenomena in mechanical activation processes Validity of the proposed model was verified by the results of experiments performed on a natural chalcopyrite mineral as well as those reported in the literature on a variety of sulfide minerals. It was shown that the model could fit different types of surface area variation with a very good accuracy. (C) 2009 Elsevier B.V All rights reserved
引用
收藏
页码：87 / 90
页数：4
相关论文
共 16 条
[1]  
[Anonymous], 2008, MECHANOCHEMISTRY NAN, DOI DOI 10.1007/978-3-540-74855-7_1
[2]   Development of a mathematical expression for the variation of amorphization phenomenon during intensive milling of minerals [J].
Bafghi, M. Sh. ;
Emami, A. H. ;
Khaki, J. Vahdati ;
Zakeri, A. .
INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2009, 93 (02) :149-154
[3]   Mechanochemistry in hydrometallurgy of sulphide minerals [J].
Baláz, P ;
Alácová, A ;
Achimovicová, M ;
Ficeriová, J ;
Godocíková, E .
HYDROMETALLURGY, 2005, 77 (1-2) :9-17
[4]   Mechanochemical processing of sulphidic minerals [J].
Baláz, P ;
Takacs, L ;
Luxová, M ;
Godocíková, E ;
Ficeriová, J .
INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2004, 74 :S365-S371
[5]   Mechanical activation in hydrometallurgy [J].
Baláz, P .
INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2003, 72 (1-4) :341-354
[6]   Physical and chemical changes of sulphides during intensive grinding in organic liquids [J].
Balaz, P ;
Mockovciakova, A ;
Boldizarova, E ;
Ficeriova, J .
POWDER TECHNOLOGY, 1998, 98 (01) :74-78
[7]   Leaching and dissolution of a pentlandite concentrate pretreated by mechanical activation [J].
Baláz, P ;
Boldizárová, E ;
Achimovicová, M ;
Kammel, R .
HYDROMETALLURGY, 2000, 57 (01) :85-96
[8]  
Balaz P., 2000, EXTRACTIVE METALLURG
[9]   Mechanochemical effects on the molybdenite roasting kinetics [J].
Ebrahimi-Kahrizsangi, Reza ;
Abbasi, Mohammad Hasan ;
Saidi, Ali .
CHEMICAL ENGINEERING JOURNAL, 2006, 121 (2-3) :65-71
[10]   Combined mechanochemical and thiosulphate leaching of silver from a complex sulphide concentrate [J].
Ficeriová, J ;
Baláz, P ;
Boldizárová, E .
INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2005, 76 (04) :260-265
12