Sodium sulfate from mine-effluent water as a raw material for the glass industry

1985 ◽  
Vol 42 (1) ◽  
pp. 3-4
Author(s):  
V. I. Maksin ◽  
O. Z. Standritchuk ◽  
R. S. Zolotareva ◽  
I. A. Klyuchnik ◽  
L. D. Kravchenko
Author(s):  
LAKSHMI NARASIMHA RAO KATAKAM ◽  
THIRUPATHI DONGALA

Objective: A novel study on a new liquid chromatographic approach has been developed and validated for simultaneous determination of trace level determination of sodium chloride and sodium sulfate measures its impurities using counter cation-exchange high-performance liquid chromatography with indirect ultraviolet (UV) detection. Methods: Chromatographic separation is developed and validated on a Hamilton PRP-X100 column with a mobile phase contained a mixture of the para-hydroxybenzoic acid buffer with a pH of 9.0 and methanol. Chromatography is developed at a flow rate of 2.0 mL/min with an indirect UV determination at 310 nm at a sensitivity level of 0.5%. The optimized method was validated as per the ICH Q2 guidelines. Results: The retention times of chloride and sulfate were about 2.8 and 7.6 min, respectively. The resolution between chloride and sulfate peaks is >4. Regression analysis confers a correlation coefficient for the stated compounds that are found to be >0.999. Conclusion: A novel analytical method was validated as per the ICH method validation guidelines and found to be selective. Hence, the validated analytical method was precise, specific, and accurate, and it is more economic and simple for the determination of inorganic impurities.


2013 ◽  
Vol 438-439 ◽  
pp. 98-101
Author(s):  
Xu Fang Zhang ◽  
Jun Yu Wu

A Si-Mn Slag Cementitious Material was prepared by mixing Si-Mn slag, circulating fluidization bed slag as raw material. The results shows that circulating fluidization bed slag and Si-Mn slag has a preferably additive effect in a certain range by combination of lime, anhydrite and anhydrous sodium sulfate as activator, and the strength of samples reach the peak at circulating fluidization bed slag of 8%, Si-Mn slag of 70%, anhydrous sodium sulfate of 2%, anhydrite of 10%, lime of 10%. The strength, setting time and soundness were also tested and the results can meet most of the requirements of OPC standard (42.5) GB/T 175-2007.


2012 ◽  
Vol 602-604 ◽  
pp. 1369-1372 ◽  
Author(s):  
Kang Bi Luo ◽  
Hu Ping Li ◽  
Yan Xia Tan

This article took the sodium sulfate and calcium chloride as the raw material and prepared calcium sulfate whiskers by hydrothermal method. The experimental results show that the calcium sulfate precursors are prepared by the reverse feed mode in which the sodium sulfate solution drop into the calcium chloride solution under the solution concentration 0.6 mol/L and the molar ratio of Na2SO4 to CaCl2 at 1:1.8. The precursors were placed in pH=6.12 hydrothermal environments and treated in the autoclave at 140 °C for 4 h to obtain the calcium sulfate whiskers having for the ratio of length to diameter at 97.5 and the better morphology.


1961 ◽  
Vol 18 (3) ◽  
pp. 113-115
Author(s):  
E. Yu. Lev ◽  
S. M. Shneerov

1971 ◽  
Vol 28 (7) ◽  
pp. 426-428
Author(s):  
I. I. Popova ◽  
V. V. Kozyrev ◽  
O. V. Sokolov

1985 ◽  
Vol 42 (8) ◽  
pp. 345-347
Author(s):  
N. G. Rashina ◽  
V. V. Puz' ◽  
V. T. Kushal'nikov ◽  
E. N. Yageman
Keyword(s):  

1973 ◽  
Vol 30 (5) ◽  
pp. 291-293
Author(s):  
I. I. Mirochnikov ◽  
V. P. Kovalenko ◽  
K. R'. Abakov

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