FeS及びMnSのCO₂による酸化平衡

抄録

We studied the oxidation equilibrium of the reactions
3FeS+10CO₂ Fe₃O₄+3SO₂+10CO
MnS+3CO₂ MnO+SO₂+3CO
at 690-890°C and 600-1000°C respectively, by following method.
Obtained the following equations for each reaction.
LogKFeS=Logp¹⁰CO·p³SO₂/p¹⁰CO₂=-52, 669·7/T+22·43
LogKMnS=Logp³CO·pSO₂/p3CO₂=-18, 290·6/T+8·28
From this result calculated the equilibrium constant of the following reactions
FeS+3CO₂ FeO+SO₂+3CO
FeS+2CO₂ Fe+SO₂+2CO
and obtained the following equations
LogKFeO=Logp³CO·pSO₂/p3CO₂=-18, 112·6/T+8·14
LogKFe=Logpp²CO·pSO₂/pp²CO₂=-17, 209.8/T+7.04
From these results obtained the equilibrium diagram between pCO/pCO₂ and pSO₂ over ferrous sulphide.