Dissolution Kinetics of Phosphate Ore in H2SO4Solutions

2003 ◽  
Vol 42 (10) ◽  
pp. 2052-2057 ◽  
Author(s):  
F. Sevim ◽  
H. Saraç ◽  
M. M. Kocakerim ◽  
A. Yartaşı
Keyword(s):  
Dissolution Kinetics ◽  
Phosphate Ore ◽  
Kinetics Of

scholarly journals Dissolution of Tunisian phosphate ore by a mixture of sulfuric and phosphoric acid: Kinetics study by means of differential reaction calorimetry

2019 ◽  
Vol 55 (1) ◽  
pp. 9-19
Author(s):  
Olfa Lachkar-Zamouri ◽  
Khemaies Brahim ◽  
Faten Bennour ◽  
Ismail Khattech
Keyword(s):  
Experimental Data ◽  
Particle Size ◽  
Dissolution Rate ◽  
Dissolution Kinetics ◽  
Reaction Model ◽  
Reaction Calorimetry ◽  
Phosphate Ore ◽  
Differential Reaction ◽  
Apparent Activation Energies ◽  
Kinetics Of

A mixture of phosphoric and sulfuric acid was used to investigate the dissolution kinetics of phosphate ore by Differential Reaction Calorimetry (DRC). The effect of the solid-to-iquid ratio, concentration, stirring speed, particle size and temperature of the reaction is examined. It was established that the dissolution rate increased with stirring speed and particle size. However, rising the olid-to-iquid ratio, temperature and concentration decreased the dissolution rate. It was determined that the dissolution rate fits in the first order of the pseudo-homogeneous reaction model. Two negative values of apparent activation energies were found in the range of 25 to 60?C. The experimental data were tested by graphical and statistical methods and it was found that the following models were best fitted for the experimental data and an empirical equation for the process was developed. -ln (1 ? x) = [2,2 E-09((S/L)0.75C -0.461G0.447(SS) 0.471exp (2671/T)]t. T? 40?C -ln (1 ? x) = [2,2 E-09((S/L)0.75C -0.461G0.447(SS) 0.471exp (6959/T)]t. T > 45?C

Dissolution Kinetics of Phosphate Ore in SO2-Saturated Water

1994 ◽  
Vol 33 (9) ◽  
pp. 2220-2225 ◽  
Author(s):  
Ahmet Yartasi ◽  
M. Muhtar Kocakerim ◽  
Sinan Yapici ◽  
Cengiz Ozmetin
Keyword(s):  
Dissolution Kinetics ◽  
Phosphate Ore ◽  
Saturated Water ◽  
Kinetics Of

Short time dissolution kinetics of refractory elements Fe, Al, and Ti in Asian outflow-impacted marine aerosols and implications

2013 ◽  
Vol 79 ◽  
pp. 93-100 ◽  
Author(s):  
Shih-Chieh Hsu ◽  
Fei-Jan Lin ◽  
Tsun-Hsien Liu ◽  
Shuen-Hsin Lin ◽  
Shuh-Ji Kao ◽  
...  
Keyword(s):  
Dissolution Kinetics ◽  
Marine Aerosols ◽  
Refractory Elements ◽  
Short Time ◽  
Kinetics Of

Improvement of Aqueous Solubility and Dissolution Kinetics of Canrenone by Solid Dispersion in Sucroester

1988 ◽  
Vol 14 (6) ◽  
pp. 791-803 ◽  
Author(s):  
Augusta Obikili ◽  
Michel Deyme ◽  
Denis Wouessidjewe ◽  
Dominique Duchěne
Keyword(s):  
Solid Dispersion ◽  
Dissolution Kinetics ◽  
Aqueous Solubility ◽  
Kinetics Of
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