The Solubility of Sulfur in Na2O–SiO2 Melts under Various Oxygen Partial Pressures at 1100 °C, 1250 °C, and 1300 °C
The Solubility of Sulfur in Na2O–SiO2 Melts under Various Oxygen Partial Pressures at 1100 °C, 1250 °C, and 1300 °C
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1100 °C、1250 °C 和 1300 °C 不同氧分压下硫在 Na2O-SiO2 中的溶解度
DOI：
10.1246/bcsj.46.3099
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发表时间：
1973
影响因子：
4
通讯作者：
T. Katsura
中科院分区：
文献类型：
--
作者：
S. Nagashima;T. Katsura
通过改变1100、1250和1300 °C下的氧分压，研究了硫在Na 2 O/SiO2摩尔比为1/3、1/2和1/1的Na 2 O-SiO2熔体中的溶解度。1100 °C时的结果很复杂，因为气相中的平衡状态尚未建立。在1250和1300 °C下的实验结果表明：（1）当温度和熔体中Na_2 O/SiO_2一定时，硫的溶解度随气相中硫总量的增加而增加。(2)当温度、Na 2 O/SiO2比和气相中硫的总量一定时，硫的溶解度在特定的氧分压下表现出最小值;在较高的氧分压下，硫主要以硫酸盐的形式溶解在熔体中，而在较低的氧分压下，硫主要以硫化物的形式溶解。(3)当温度和气相中硫的总量一定时，溶解度大大提高。
The solubility of sulfur in Na2O–SiO2 melts with the Na2O/SiO2 molar ratios of 1/3, 1/2, and 1/1 was investigated by varying the oxygen partial pressure at 1100, 1250, and 1300 °C. The results at 1100 °C are complicated, for the equilibrium state within the gas phase is not established. From the experiments at 1250 and 1300 °C, the following conclusions are reached: (1) When the temperature and the Na2O/SiO2 ratio in the melt are constant, the solubility of sulfur increases with an increase of the total amount of sulfur in the gas phase. (2) When the temperature, the Na2O/SiO2 ratio, and the total amount of sulfur in the gas phase are constant, the solubility of sulfur shows its minimum at a specific oxygen partial pressure; at higher oxygen partial pressures, the sulfur dissolves in the melts mostly as sulfate, while at lower oxygen partial pressures, the sulfur dissolves mostly as sulfide. (3) When the temperature and the total amount of sulfur in the gas phase are constant, the solubility rises greatly...