Oxidation of sulfide minerals: VII. Effect of temperature and relative humidity on the oxidation of pyrrhotite
Oxidation of sulfide minerals: VII. Effect of temperature and relative humidity on the oxidation of pyrrhotite
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DOI：
10.1016/0009-2541(82)90006-7
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发表时间：
1982-04
期刊：
影响因子：
3.9
通讯作者：
H. F. Steger
中科院分区：
文献类型：
--
作者：
H. F. Steger
磁黄铁矿样品在50°C、43°、35°和28°C，RH为62%；在50°C，RH为75、55、50和37%的条件下氧化，氧化时间长达7天。结果表明，氧化通过一系列反应生成FeSO4、Fe(OH)(SO4)·xH2O，最终生成三氧化二铁和单质硫。磁黄铁矿氧化样品的反射光谱研究表明，FeSO4氧化成Fe(OH)(SO4)·xH2O的中间产物是FeSO4氧化成Fe(OH)(SO4)·xH2O。
Samples of pyrrhotite have been oxidized at 50°, 43°, 35° and 28°C with 62% RH; and at 50°C with 75, 55, 50 and 37% RH, for periods up to 7 days. The results indicate that the oxidation proceeds by a sequence of reactions to give FeSO4, Fe(OH)(SO4)·xH2O and ultimately ferric oxide and elemental sulfur. The formation of ferric oxide obeys the parabolic rate law at all values of temperature and relative humidity.The reflectance spectral study of the oxidized samples of pyrrhotite indicates that an undefined ferrous-ferric sulfate is formed as an intermediate in the oxidation of FeSO4to Fe(OH)(SO4)·xH2O.