Weathering of siderite (FeCO3) from lignite overburden

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Siderite (FeCO3) is commonly found in coal overburden and, when present, can cause interference in the determination of neutralization potential (NP). Under acidic testing conditions, FeCO3 reacts to neutralize acid, which contributes to the NP. However, continued weathering of FeCO3 (oxidation of Fe 21 and hydrolysis of Fe) produces a neutral to slightly acidic solution. The effects of hydroge...

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Siderite (FeCO3): Thermal Decomposition in Equilibrium with Graphite.

The thermal stability of siderite (FeCO(3)) was studied by two independent methods in which the oxygen fugacity of the gas phase was controlled by equilibration with graphite. Both series of experiments indicate that siderite decomposes stably to magnetite + graphite between 455 degrees and 465 degrees C at 500 to 2000 bars PCO2 + P(CO).

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The rise of oxygen and siderite oxidation during the Lomagundi Event.

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Siderite dissolution in the presence of chromate

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ژورنال

عنوان ژورنال: Journal American Society of Mining and Reclamation

سال: 1989

ISSN: 2328-8744

DOI: 10.21000/jasmr89010597