Dissolution kinetics of celestite (SrSO4) in HCl solution with BaCl2

被引：32
作者：
Aydogan, Salih [1 ]
Erdemoglu, Murat
Aras, Ali
Ucar, Goekhan
Ozkan, Alper
机构：
[1] Selcuk Univ, Dept Min Engn, TR-42075 Konya, Turkey
[2] Inonu Univ, Dept Min Engn, TR-44280 Malatya, Turkey
来源：
HYDROMETALLURGY | 2006年 / 84卷 / 3-4期
关键词：
celestite; hydrochloric acid; barium chloride; reaction kinetics;
D O I：
10.1016/j.hydromet.2006.06.001
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Leaching of celestite (SrSO4) in hydrochloric acid solution with BaCl2 was investigated to produce SrCl2 in solution, which is the main source for SrCO3. The effects of variables such as stirring speed, BaCl2 and HCl concentrations, and temperature and particle size, and also the presence of NaCl in the leaching solution were studied. The leaching was modeled according to the shrinking core model. The activation energy for the leaching process in 8.25 x 10(-3) M BaCl2 solution equilibrated with 0.5 M HCl was found as 68.8 U mol(-1). This value reveals that the dissolution of celestite is a chemical reaction controlled process. In agreement with the model, the reaction rate is inversely proportional to the particle size and increases as 0.73, 0.70 and 0. 19 powers of the H+, Cl- and Ba2+ concentrations, respectively. (C) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：239 / 246
页数：8
相关论文
共 25 条
  • [1] The chemistry of scale prediction
    Atkinson, G
    Mecik, M
    [J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING, 1997, 17 (1-2) : 113 - 121
  • [2] A LABORATORY STUDY OF THE LEACHING OF CELESTITE IN A PACHUCA TANK
    CARRILLO, FR
    URIBE, P
    CASTILLEJOS, AH
    [J]. MINERALS ENGINEERING, 1995, 8 (4-5) : 495 - 509
  • [3] The direct conversion of celestite to strontium carbonate in sodium carbonate aqueous media
    Castillejos, AH
    delaCruz, FP
    Uribe, A
    [J]. HYDROMETALLURGY, 1996, 40 (1-2) : 207 - 222
  • [4] CHENG Z, 1992, HUADONG HUAGONG XUEY, V18, P723
  • [5] De Buda F., 1987, Patent No. [US4666688, 4666688]
  • [6] Leaching of celestite with sodium sulfide
    Erdemoglu, M
    Sarkaya, M
    Canbazoglu, M
    [J]. JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY, 2006, 27 (04) : 439 - 442
  • [7] Erdemoglu M, 1998, T I MIN METALL C, V107, pC65
  • [8] The leaching of SrS with water and the precipitation of SrCO3 from leach solution by different carbonating agents
    Erdemoglu, M
    Canbazoglu, M
    [J]. HYDROMETALLURGY, 1998, 49 (1-2) : 135 - 150
  • [9] Crystallization and phase stability of CaSO4 and CaSO4-based salts
    Freyer, D
    Voigt, W
    [J]. MONATSHEFTE FUR CHEMIE, 2003, 134 (05): : 693 - 719
  • [10] Sulphuric acid pressure leaching of a limonitic laterite: chemistry and kinetics
    Georgiou, D
    Papangelakis, VG
    [J]. HYDROMETALLURGY, 1998, 49 (1-2) : 23 - 46
123