Phosphogypsum transition to α-calcium sulfate hemihydrate in the presence of omongwaite in nacl solutions under atmospheric pressure

Journal of the American Ceramic Society

Volumn 95, Issue 11, 2012, Pages 3478-3482

  Ru, Xiaohong ^a   Ma, Baoguo ^a   Huang, Jian ^a   Huang, Yun ^a  

^a Wuhan University of Technology   (China)

Author keywords

[No Author keywords available]

Indexed keywords

CALCIUM SULFATE DIHYDRATE; CALCIUM SULFATE HEMIHYDRATE; CHEMICAL COMPOSITIONS; CONTENT VARIATION; CRYSTAL MORPHOLOGIES; DIFFERENTIAL SCANNING CALORIMETERS; NACL CONCENTRATION; NACL SOLUTION; PHOSPHOGYPSUM; REACTION TEMPERATURE; THIRD PHASE; WATER ACTIVITY;

ATMOSPHERIC PRESSURE; DIFFERENTIAL SCANNING CALORIMETRY; GYPSUM; SODIUM; THERMOGRAVIMETRIC ANALYSIS;

SODIUM CHLORIDE;

EID: 84868477697     PISSN: 00027820     EISSN: 15512916     Source Type: Journal    
DOI: 10.1111/j.1551-2916.2012.05429.x     Document Type: Article

References (25)

1. M. Jamialahmadi, " Crystallization of Calcium Sulfate Dihydrate from Phosphoric Acid," Asia-Pac. J. Chem. Eng., 8, 587-604 (2000).
2. M. Singh, " Physico-Chemico Studies on Phosphogypsum for Use in Building Materials," Ph.D. Dissertation, University of Roorkee, Roorkee, India, 1980.
3. M. Singh, " Treating Waste Phosphogypsum for Cement and Plaster Manufacture," Cem. Concr. Res., 32, 1033-8 (2002).
4. J. Yang, W. Liu, L. Zhang, and, B. Xiao, " Preparation of Load-Bearing Building Materials from Autoclaved Phosphogypsum," Constr. Build. Mater., 23, 687-93 (2009).
5. M. Garg, N. Jain, and, M. Singh, " Development of Alpha Plaster from Phosphogypsum for Cementitious Binders," Constr. Build. Mater., 23, 3138-43 (2009).
6. X. D. Ye, " Present Status, Problems and Suggestions of Phosphogypsum Utilization in China," Phos. Comp. Fertil., 26, 5-7 (2011). (in Chinese)
7. N. B. Singh, and, B. Middendorf, " Calcium Sulphate Hemihydrate Hydration Leading to Gypsum Crystallization," Prog. Cryst. Growth Charact. Mater., 53, 57-77 (2007).
8. M. Singh, " Effect of Phosphatic and Fluoride Impurities of Phosphogypsum on the Properties of Selenite Plaster," Cem. Concr. Res., 33, 1363-9 (2003).
9. 5 Phosphoric Acid Solutions at 80, 90, 100, and 110°C Correlations with Water Concentration," J. Chem. Eng. Data, 36, 77-80 (1991).
10. M. El Moussaouiti, R. Boistelle, A. Bouhaouss, and, J. P. Klein, " Crystallization of Calcium Sulphate Hemihydrate in Concentrated Phosphoric Acid Solutions," Chem. Eng. J., 68, 123-30 (1997).
11. -1 Sulfuric Acid Solutions at 100°C," J. Chem. Eng. Data, 49, 1263-8 (2004).
12. A. Hina, and, G. H. Nancollas, " Alpha Calcium Sulfate Hemihydrate and a Method of Making Alpha Calcium Sulfate Hemihsydrate "; International Patent, WO 079116, 2001.
13. 2 Solutions from 283 K to 353 K," J. Chem. Eng. Data, 50, 1971-82 (2005).
14. 2O System Between 0 to 100°C," Ind. Eng. Chem. Res., 45, 4517-24 (2006).
15. B. H. Guan, X. F. Ma, Z. B. Wu, L. C. Yang, and, Z. X. Shen, " Crystallization Routs and Metastability of α-Calcium Sulfate Hemihydrate in Potassium Chloride Solutions Under Atmosphere Pressure," J. Chem. Eng. Data, 54, 719-25 (2009).
16. 2O Systems at Elevated Temperatrue," J. Cryst. Growth, 311, 4518-24 (2009).
17. B. H. Guan, H. L. Fu, and, J. Yu, " Direct Transformation of Calcium Sulfate to α-Calcium Sulfate Hemihydrate in a Concentrated Ca- Mg- Mn Chloride Solution Under Atmospheric Pressure," Fuel, 90, 36-41 (2011).
18. B. H. Guan, L. Yang, H. L. Fu, B. Kong, T. Y. Li, and, L. C. Yang, " α-Calcium Sulfate Hemihydrate Preparation from FGD Gypsum in Recycling Mixed Salt Solutions," Chem. Eng. J., 174, 296-303 (2011).
19. D. N. Glew, and, D. A. Hames, " Gypsum, Disodium Pentacalcium Sulfate, and Anhydrite Solubilities in Concentrated Sodium Chloride Solutions," Can. J. Chem., 48, 3733-8 (1970).
20. 2O, A New Mineral from Recent Salt Lake Deposits, Namibia," Miner. Mag., 72, 1307-18 (2008).
21. Y. Chen, W. H. Yue, and, R. L. Dong, " Super-Strength Gypsum "; pp. 158-89 in Gypsum Building Materials, Edited by, X. C. Ma,. China Building Materials Industry Press, Beijing, China, 2003 (in Chinese).
22. R. J. Hand, " Calcium Sulphate Hydrates: A Review," Br. Ceram. Trans., 96, 116-20 (1997).
23. 4 Phase in Dehydration Process of Gypsum: In Situ FTIR Study," Am. Miner., 90, 672-8 (2005).
24. J. Bensted, and, S. Prakash, " Investigation of Calcium Sulphate Water System by Infrared Spectroscopy," Nature, 219, 60-1 (1968).
25. A. Putnis, B. Winkler, and, L. Fernandez-Diaz, " In Situ IR Spectroscopic and Thermogravimetric Study of the Dehydration of Gypsum," Miner. Mag., 54, 123-8 (1990).