Thermodynamic Simulation of the Silicothermic Reduction of Chromium Ore Elements

2020 ◽  
Vol 2020 (1) ◽  
pp. 11-16 ◽  
Author(s):  
V. A. Salina ◽  
O. V. Zayakin ◽  
V. I. Zhuchkov
Keyword(s):  
Thermodynamic Simulation ◽  
Chromium Ore ◽  
Silicothermic Reduction

Thermodynamic Simulation of Silicothermic Reduction of Chromium

2020 ◽  
Vol 50 (2) ◽  
pp. 84-89
Author(s):  
V. A. Salina ◽  
V. I. Zhuchkov ◽  
O. V. Zayakin
Keyword(s):  
Thermodynamic Simulation ◽  
Silicothermic Reduction

The solubility of calcium carbonate  in green liquor handling systems

TAPPI Journal ◽  
2019 ◽  
Vol 18 (10) ◽  
pp. 595-602
Author(s):  
ALISHA GIGLIO ◽  
VLADIMIROS G. PAPANGELAKIS ◽  
HONGHI TRAN
Keyword(s):  
Calcium Carbonate ◽  
Systematic Study ◽  
Kraft Pulp ◽  
Thermodynamic Simulation ◽  
Solubility Data ◽  
Pulp Mills ◽  
Persistent Problem ◽  
Green Liquor ◽  
Kraft Pulp Mills ◽  
Salt Systems

The formation of hard calcite (CaCO3) scale in green liquor handling systems is a persistent problem in many kraft pulp mills. CaCO3 precipitates when its concentration in the green liquor exceeds its solubility. While the solubility of CaCO3 in water is well known, it is not so in the highly alkaline green liquor environment. A systematic study was conducted to determine the solubility of CaCO3 in green liquor as a function of temperature, total titratable alkali (TTA), causticity, and sulfidity. The results show that the solubility increases with increased temperature, increased TTA, decreased causticity, and decreased sulfidity. The new solubility data was incorporated into OLI (a thermodynamic simulation program for aqueous salt systems) to generate a series of CaCO3 solubility curves for various green liquor conditions. The results help explain how calcite scale forms in green liquor handling systems.

Thermodynamic Simulation of a Hybrid Brayton Thermosolar Plant

2016 ◽  
pp. 157-161
Author(s):  
R.P. Merchan ◽  
M.J. Santos ◽  
A. Medina ◽  
A. Calvo
Keyword(s):  
Thermodynamic Simulation
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