᳓⚛⵾㋕ታ⃻䈱䈢䉄䈱ਇ⚐‛ర⚛䈱䊜䉺䊦䋭䉴䊤䉫㑆ಽ㈩⎇ⓥઍ⴫⠪㩷 ᧲ർᄢቇᄙర‛⾰⑼ቇ⎇ⓥᚲ㩷 ഥᢎ㩷 ਣጟિᵗ1.

✜⸒㩷 ⃻ⴕ䈱὇⚛䉕↪䈇䈢㋕ㆶరᴺ䋨㜞Ἱ䋩䈲὇⚛㘻๺䈪䈅䉎䈢䉄㉄⚛䊘䊁䊮䉲䊞䊦䈏ૐ䈜䈑䇮P 䉇 Si 䈭䈬䈱ਇ⚐‛ర⚛䉁䈪䉅䈏ㆶర䈘䉏䈩䈇䉎䇯䈖䉏䈮ኻ䈚᳓⚛ㆶర䈪䈲㉄⚛䊘䊁䊮䉲䊞䊦䉕㜞䈒೙ᓮน⢻䈪䇮ਇ⚐‛฽᦭㊂䈱ዋ䈭䈇㋕䉕↢ᚑ಴᧪䉎น⢻ᕈ䈏䈅䉎䇯὇⚛㘻๺䈪䈭䈇䈢䉄䈠䈱Ⲣὐ䈲㜞䈒࿕૕㋕䈏ᓧ䉌䉏䉎䈏䇮࿕૕㋕䈻䈱ਇ⚐‛ర⚛䈱ಽ㈩᜼േ䈲᣿⏕䈪䈭䈇䇯䈠䈖䈪ᧄ⎇ⓥ䈪䈲ṁⲢ㉄ൻ‛䈎䉌䈱࿕૕㋕ᨆ಴ᤨ䈱 P, Mn 䈍䉋䈶 Si 䈱䊜䉺䊦-䉴䊤䉫㑆ಽ㈩䉕᷹ቯ䈚䇮ਇ⚐‛䈱ዋ䈭䈇㋕䉕ᓧ䉌䉏䉎䉴䊤䉫⚵ᚑ䇮㉄⚛ಽ࿶䈭䈬䈱᧦ઙ䉕⺞ᩏ䈚䈢䇯⃻ⴕ䈱㜞ἹォἹᴺ䈮䉋䉎㋕㍑↢↥䈪䈲㜞Ἱ䈪㋕㋶⍹䉕ㆶర䈚䇮ṁ㌉੍஻ಣℂ䇮ォἹ䇮2 ᰴ♖㍰䈭䈬
䈪 Si, P, S 䈭䈬䈱ਇ⚐‛ర⚛䉕㒰෰䈜䉎䇯⃻࿷䉁䈪䊜䉺䊦䋭䉴䊤䉫㑆䈱ਇ⚐‛ర⚛䈱ᐔⴧಽ㈩䈮䈍䉋䈿䈜䉴䊤䉫⚵ᚑ䇮㉄⚛ಽ࿶䈱ᓇ㗀䈲ᢙᄙ䈒ᬌ⸛䈘䉏䈩䈐䈢䈏䇮䈠䈱ᄙ䈒䈲⵾㍑䊒䊨䉶䉴䈱䉴䊤䉫⚵ᚑ䇮㉄⚛
ಽ࿶ㄭற䈱ᬌ⸛䈪䈅䉍䇮ឭ᩺䈘䉏䈩䈇䉎ฦ⒳䊝䊂䊦 1)䈏ᧄ⎇ⓥ䈱ታ㛎᧦ઙၞ䋨Fig.2 䈱㗔ၞ㽴䋩䈻ᄖᝌน⢻䈎⏕⹺䈏ᔅⷐ䈪䈅䉎䇯㉄ൻ‛ṁⲢㆶర䈲࿖ౝᄖ໧䉒䈝ฎ䈒䈎䉌ᢙᄙ䈒ᬌ⸛䈘䉏䈩䈍䉍䇮࿖ౝ䉕ઍ⴫䈫䈜䉎 DIOS 䊒䊨䉶䉴 2)䈪䈲䇮↢↥ᕈ⏕଻䈱䈢䉄᷷ᐲ䉕㜞䈒䈞䈙䉎䉕䈋䈭䈎䈦䈢䇯৻ᣇ䇮᳓⚛䈱ㆶరㅦᐲ䈲৻㉄ൻ὇⚛䉋䉍䉅ㅦ䈇䈖䈫䈏⍮䉌䉏䈩䈍䉍 3䋩䇮ૐ᷷䈪䉅චಽ䈭↢↥ᕈ䉕⏕଻䈪䈐䉎น⢻ᕈ䈏䈅䉎䇯䊒䊨䉶䉴䈱ૐ᷷ൻ䈲ᛩ౉䉣䊈䊦䉩䊷䈱೥ᷫ䇮⠴Ἣ‛ṁ៊ᛥ೙䈱ὐ䈪᦭೑䈪䈅䉎䇯ṁⲢ㉄ൻ‛䉕ㆶర䈚ṁ㋕䉕ᓧ䉎㓙䈱෻ᔕㅦᐲ䈮㑐䈜䉎ᬌ⸛䈲ᄙ䈒ႎ๔䈘䉏䈩䈇䉎䈏䇮ૐ᷷䈪ㆶర䈚࿕૕㋕䉕↢ᚑ䈘䈞䉎㓙䈱ਇ⚐‛ర⚛䈱ㆶర᜼േ䈮㑐䈜䉎ᬌ⸛䈲䈾䈫䉖䈬䈭䈘䉏䈩䈇䈭䈇䇯
2.

Factsage 䈮䉋䉎⹜▚⎇ⓥ䈮వ┙䈤䇮⸘▚ᾲജቇ䉸䊐䊃 Factsage 䈪ᐔⴧ⚵ᚑ䉕⹜▚䈚䈢䇯⸘▚᧦ઙ䈲 Table 1 䈮␜䈜䈫䈍䉍䈪䇮὾⚿㋶䇮㜞Ἱේᢱ䈎䉌䉮䊷䉪䉴䉕㒰䈇䈢⚵ᚑ䈱ฦ⒳᷷ᐲ䇮㉄⚛ಽ࿶ਅ䈮䈍䈔䉎㋕㋶⍹ㆶరᐔⴧ䉕⹜▚䈚䈢䇯Table 1 ⸘▚ߦ↪޿ߚේᢱ⚵ᚑ㧙㧙

Fig.䋱䈮ਇ⚐‛䈱㋕⋧䈻䈱ᷙ౉₸䉕䉦䊤䊷䊙䉾䊒䈪␜䈜䇯a) b)䈲ᶧ⋧㋕䇮࿕૕㋕䈱ㆶరᐲ䉕␜䈚䈩䈍
䉍䇮PO2=10-9䌾11atm 䈪䈲㋕䈱Ⲣὐ䈱 1535㷄ઃㄭ䈏࿕ᶧ䈱Ⴚ⇇䈪䈅䉎䇯὇⚛䉕↪䈇䈭䈇䈢䉄Ⲣὐ䈲㌉㋕䉋䉍㜞䈇୯䉕␜䈜䇯PO2=10-11atm એਅ䈱㉄⚛ಽ࿶䈪䈲 P 䉇 Mn ╬䈱ਇ⚐‛䈏ㆶర䈘䉏㋕䈮ᷙ౉䈜䉎䈢䉄䇮࿕ᶧ䈱Ⴚ⇇䈲ૐ᷷஥䈮䉲䊐䊃䈜䉎䇯⃻ⴕ䈱㜞ἹἹᐥ䈲὇⚛㘻๺䈪䈅䉍䇮䈠䈱㉄⚛ಽ࿶䈲᷷ᐲ䈮䉋䉍৻ᗧ䈮᳿䉁䉎䇯C-CO ᐔⴧ䈎䉌▚಴䈜䉎䈫 1570㷄䈮䈍䈔䉎㉄⚛ಽ࿶䈲 10-16atm 䈪䈅䉍䇮࿑ਛ䈱ਣශ䈮␜䈜૏⟎䈪䈅䉎䇯d) e) f)䉋䉍⃻⁁䈱㜞ἹἹᐥ᧦ઙ䈪䈲 P, Mn 䈏ో㊂䇮Si 䈲৻ㇱㆶర䈘䉏㋕ਛ䈮ᷙ౉䈜䉎䈖䈫䈏ಽ䈎䉎䇯
㩷 Fig.1 䈱⚿ᨐ䉕 Fig.2 䈮䉁䈫䉄䈢䇯㽲ᧂㆶర䈱㉄ൻ‛㗔ၞ䇮㽳ᶧ⋧㋕㗔ၞ䇮㽴࿕⋧㋕㗔ၞ䇮㽵P 䈍䉋䈶Mn 䈏ㆶర䈚ᶧ⋧㋕䈮ᷙ౉䈜䉎㗔ၞ䇮㽶P 䈍䉋䈶 Mn 䈏ㆶర䈚࿕⋧㋕䈮ᷙ౉䈜䉎㗔ၞ䇮㽷Si 䉅ㆶర䈜䉎㗔ၞ䈮ಽ䈎䉏䉎䇯࿑ਛ䈱ਣශ䈲⃻ⴕ㜞ἹἹᐥ᧦ઙ䉕␜䈜䇯Ἱᐥ䈲὇⚛㘻๺䈪䇮䈠䈱㉄⚛ಽ࿶䈲᷷ᐲ䈮䉋䉍᳿䉁䉎䇯1570㷄䈱㉄⚛ಽ࿶䈲 10-16atm 䈪䇮㋕㋶⍹ਛ䈱 P, Mn 䈲䈾䈿ో㊂䇮Si 䈲৻ㇱㆶర䈘䉏ṁ㌉ਛ䈮ਇ⚐‛䈫䈚䈩ሽ࿷䈜䉎䈖䈫䈏ಽ䈎䉎䇯䈧䉁䉍䇮὇⚛ㆶర䈪䈲὇⚛㘻๺䈫䈭䉎䈢䉄㉄⚛䊘䊁䊮䉲䊞䊦䈏ૐ䈜䈑䇮Fig.2 䈱㽴䈱㗔ၞ䈮౉䉌䈭䈇䇯৻ᣇ䇮᳓⚛ㆶరਅ䈪䈲࿕૕὇⚛䈏ሽ࿷䈚䈭䈇䈢䉄છᗧ䈱㉄⚛
ಽ࿶䈮೙ᓮน⢻䈪䇮࿑ਛ⌕⦡㗔ၞ᧦ઙਅ䈪ᠲᬺ䈜䉏䈳ਇ⚐‛฽᦭㊂䈏䈐䉒䉄䈩ዋ䈭䈇㋕䉕⵾ㅧ䈪䈐䉎น⢻ᕈ䈏䈅䉎䇯a) Liquid-Fe

Liq  Feu 100
Input  Fe㷄b) Solid-Fe

Sol  Feu 100
Input  Fe㷄c) Liq.+Sol-Fe

Liq  Sol  Fe
u100
Input  Fed) P in Fe phase

Liquid㷄㷄Solid㧙㧙

P _ in _ Liq  Fe
u100
Input  Pe) Si in Fe phase

Si _ in _ Liq  Feu100Input  Si㷄f) Mn in Fe phase

Mn _ in _ Liq  Feu100
Input  Mn㷄g) Al in Fe phase

Al _ in _ Liq  Feu100
Input  Al

㷄Fig. 1 Factsage 䈮䉋䉎ਇ⚐‛ㆶర₸⹜▚䈱䉦䊤䊷䊙䉾䊒Fig.2 ฦ⒳㉄⚛ಽ࿶߅ࠃ᷷߮ᐲߦ߅ߌࠆᐔⴧ⋧Fig.3 ឭ᩺ߔࠆ᳓⚛ṁⲢㆶర⵾㋕ᴺߩࡊࡠ࠮ࠬࠪࠬ࠹ࡓ࿑㩷 䈠䈖䈪ᧄ⎇ⓥ䈪䈲 Fig.3 䈮␜䈜᳓⚛ṁⲢㆶర⵾㋕ᴺ䉕ឭ᩺䈚䈢䇯䉁䈝㋕㋶⍹䈮⍹Ἧ⍹䈭䈬䉕ᷝട䈚㔚᳇䉁䈢䈲᳓⚛Ά὾ᾲ䈪ṁⲢ㉄ൻ‛䉕↢ᚑ䈜䉎䇯ᰴ䈮᳓⚛䈪ㆶర䈚䈩࿕૕㋕䉕ᓧ䉎䇯ᓧ䉌䉏䈢࿕૕㋕䈲㧙㧙ᰴᎿ⒟䈪㔚᳇Ἱṁ⸃䈚♖㍰䈍䉋䈶ᚑಽ⺞ᢛ䉕ⴕ䈉䇯ㆊ෰䈮⎇ⓥ䈘䉏䈢 DIOS2)䈫㘃ૃ䈜䉎䊒䊨䉶䉴䈪䈅䉎䈏䇮ㆶర೷䈲὇⚛䈪䈲䈭䈒᳓⚛䈪䈅䉍䇮὇⚛䈏ሽ࿷䈚䈭䈇䈢䉄㋕䈱Ⲣὐ䈲㜞䈒࿕૕㋕䈏ᓧ䉌䉏䉎ὐ䈏⇣䈭䉎䇯὇⚛䉕↪䈇䈭䈇䈱䈪᷷ᐲ䈱䉂䈪㉄⚛ಽ࿶䈏᳿ቯ䈘䉏䈝䇮P 䉇 Si 䈭䈬䈱ਇ⚐‛ర⚛䈱ㆶరᛥ೙น⢻䈭᧦ઙਅ䈪䈱ᠲᬺ䈏ᦼᓙ䈪䈐䉎䇯
3.

P ಽᨆ䈱ᬌ⸛㩷 ᧄ⎇ⓥ䉕ㆀⴕ䈜䉎䈮䈅䈢䉍䇮P 䈱ᓸ㊂ቯ㊂ಽᨆ䈏ᔅⷐ䈪䈅䉎䇯৻⥸⊛䈮 P ಽᨆ䈲䊝䊥䊑䊂䊮㍲૕䉕↪
䈇䈢ๆశశᐲᴺ䈏↪䈇䉌䉏䉎䈏䇮᷷ᐲ䇮଻ᜬᤨ㑆䇮૞ᬺ⠪䈱䉴䉨䊦䇮౒ሽ䉟䉥䊮䋨․䈮㋕䋩䈏ᄢ䈐䈒ᓇ㗀䈚䇮ข䉍ᛒ䈇䈮䈲ᵈᗧ䈏ᔅⷐ䈪䈅䉎䇯ᧄ⎇ⓥ䈪䈲 ICP-AES 䈪 P ಽᨆ䉕ⴕ䈦䈢䇯ICP-AES 䈲ઁర⚛หᤨಽᨆน⢻䈭᷹ቯᯏེ䈪䈅䉎䈏䇮P 䈱ᗵᐲ䈲⪺䈚䈒ዊ䈘䈇䇯Table 2 䈮 P ฽᦭㋕ 0.5g 䉕㉄ṁ⸃䈚䈩 50mL䈮⺞ᢛ䈚䈢ᤨ䈱ṁᶧਛ P Ớᐲ䉕␜䈜䇯㋕ਛ P Ớᐲ 0.01%䉕ಽᨆ䈢䉄䈮䈲ṁᶧਛ 1ppm 䈱ಽᨆᗵᐲ䈏ᔅⷐ䈪䇮䈠䈱㓙䈱ṁᶧਛ㋕Ớᐲ䈲 10000ppm 䈮㆐䈜䉎䈖䈫䈏䉒䈎䉎䇯
Table 2㩷 0.5g 䈱㋕⹜ᢱ䉕㉄ṁ⸃䈚䈩 50mL 䈮䈚䈢䈫䈐䈱 Fe 䈍䉋䈶 P 䈱Ớᐲ
P content in metal
Content in 50mL solution
[%]
[ppm]
P [ppm]Fe [ppm]
110000100
100000.11000
1010000
0.01
1001100000.001
100.110000㩷㩷 Fig.4 䈮ㅢᏱ䈱ᣇᴺ䈪᷹ቯ䈚䈢 P 䈱 ICP-AES 䉴䊕䉪䊃䊦䉕␜䈜䇯䊏䊷䉪䈲ᬌ಴䈪䈐䈩䈇䉎䉅䈱䈱 10ppm
䈪⚂ 700count 䈫䊏䊷䉪㜞䈘䈲ૐ䈒䇮ቯ㊂ᕈ䈲ᖡ䈇䇯䈠䈖䈪⿥㖸ᵄ䊈䊑䊤䉟䉱䊷䈍䉋䈶䉴䊕䉪䊃䊦䉴䉨䊞䊆䊮䉫䊜䉸䉾䊄䉕↪䈇䈩ᗵᐲ䈱ะ਄䉕⹜䉂䈢䇯ㅢᏱ䈱䊈䊑䊤䉟䉱䊷䈲⚦▤䈎䉌ྃ㔵䈚䈢ṁᶧ䉕䉝䊦䉯䊮᳇ᵹ䈪䊒䊤䉵䊙䈮ዉ౉䈜䉎䈱䈮ኻ䈚䇮⿥㖸ᵄ䊈䊑䊤䉟䉱䊷䈲ṁᶧ䉕⿥㖸ᵄ⊒ᝄሶ䈮䉋䉍㔵ൻ䈚䇮䉝䊦䉯䊮᳇ᵹ䈪䊒䊤䉵䊙䈮ዉ౉䈜䉎䇯䈖䈱ᣇᴺ䈮䉋䉍䊒䊤䉵䊙䈮೔㆐䈜䉎ṁᶧ㊂䈏Ⴧട䈜䉎䇯᷹ቯ⚿ᨐ䉕 Fig.5 䈮␜䈜䇯1ppm 䈅䈢䉍 4000count 䈫චಽ䈭ᒝᐲ䉕␜䈚䈢䇯㩷 ታ㓙䈱䉰䊮䊒䊦䈮䈲㜞Ớᐲ䈱 Fe 䈏฽䉁䉏䉎䇯Fe 䉕 1000ppm ฽䉃ṁᶧ䈱䉴䊕䉪䊃䊦䉕 Fig.6 䈮␜䈜䇯P䈱ᵄ㐳䈱೨ᓟ䈮 Fe 䈱Ꮒᄢ䈭䊏䊷䉪䈏ሽ࿷䈜䉎䈏 0.5ppm ⒟ᐲ䈱 P 䈱䊏䊷䉪䈲್೎น⢻䈪䈅䉎䇯Fig.7 䈮P 䉕 5ppm ฽䉃ṁᶧ䈱 Fe 䉕 800,1000,1200ppm 䈫ᄌൻ䈘䈞䈢⹜ᢱ䈱䉴䊕䉪䊃䊦䉕␜䈜䇯㋕Ớᐲ䈏㜞䈇䈾䈬೨ᓟ䈱 Fe 䊏䊷䉪䈲ᄢ䈐䈒䈭䉍䇮䈠䉏䈮઻䈇 P 䊏䊷䉪䈱䊔䊷䉴䊤䉟䊮㜞䈘䈏ᄌൻ䈚䈢䇯䈖䉏䉌䈱⹜ᢱ䈱 Pಽᨆ⚿ᨐ䉕 Fig.8 䈮␜䈜䇯ಽᨆ䈮↪䈇䈢ᬌ㊂✢䈲 Fe 1000ppm 䉕฽䉃 P 0, 5, 10ppm 䈪૞ᚑ䈚䈢䇯㋕Ớᐲ䈮䉋䉍 P Ớᐲ䈲ᄌൻ䈚䈢䇯䈧䉁䉍䇮ᱜ⏕䈭ಽᨆ䈱䈢䉄䈮䈲⹜ᢱ䇮ᮡḰ‛⾰䈱 Fe Ớᐲ䉕ᱜ⏕䈮৻⥌䈘䈞䉎ᔅⷐ䈏䈅䉎䈖䈫䈏䉒䈎䉎䇯䈚䈎䈚䈭䈏䉌䇮ታ㛎䈱ㇺว਄ಽᨆ⹜ᢱ䈱㊀㊂䉕ᱜ⏕䈮৻⥌䈘䈞䉎䈖䈫䈲䉃䈝䈎䈚䈒䇮䈘䉌䈮⹜ᢱ䈮䈲 Fe એᄖ䈱ర⚛䉅฽䉁䉏䈩䈍䉍䇮䈠䉏䉌䈱Ớᐲ䈮䉋䉍 Fe Ớᐲ䉅ᄌൻ䈜䉎䇯㩷 ᰴ䈮 Fe 䈱ᓇ㗀䉕㒰䈒䈢䉄䈮᦭ᯏṁᇦ䋨MIBK䋩䈪⹜ᢱṁᶧਛ䈎䉌 Fe 䉕ข䉍㒰䈇䈢䇯䈠䈱⚿ᨐ Fe 䈱䊏䊷䉪䈲ᶖ䈋䇮Fig.5 䈫ห᭽䈭 P 䈱䉂䈱䉴䊕䉪䊃䊦䈏ᓧ䉌䉏䈢䇯䈖䈱ᣇᴺ䉕↪䈇䈩ᣣᧄ㋕㍑ᮡḰ‛⾰䉕ಽᨆ䈚䈢⚿ᨐ䉕 Table 3 䈮␜䈜䇯ಽᨆ୯䈲⹺⸽୯䈫ㄭ䈇୯䈪䇮᭎䈰⦟ᅢ䈭ಽᨆ⚿ᨐ䈏ᓧ䉌䉏䈢䇯ᓥ䈦䈩ᧄ⎇ⓥ䈪䈲 Fe ⹜ᢱ䉕㉄ṁ⸃ᓟ䇮MIBK 䈪 Fe 㒰෰䈚䇮⿥㖸ᵄ䊈䊑䊤䉟䉱䊷઀᭽䈱 ICP-AES 䈪ಽᨆ䈜䉎䈖䈫䈫䈚䈢䇯䈭䈍ᧄᚻᴺ䈲 Cu 䉕฽䉃⹜ᢱ䈱႐ว䇮ᒝ䈇ᐓᷤ䉕ฃ䈔䉎䈢䉄ਇะ䈐䈪䈅䉎䇯㧙㧙10ppm10ppm-P

5ppm-P
1ppm-P

Fig.5 ⿥㖸ᵄࡀࡉ࡜ࠗࠩ࡯ࠍ૶↪
ߒߚ ICP-AES ࠬࡍࠢ࠻࡞

Fig.4 10ppm-P ߩㅢᏱߩ ICP-AES
ࠬࡍࠢ࠻࡞

800, 1000, 1200ppm-Fe
1000ppm-Fe

5ppm-P

5ppm-P

1000ppm-Fe
1ppm-P
0.5ppm-P

Analysis value of P [ ppm ]Fig.6 ㋕ࠍ฽߻⹜ᢱߩ ICP-AES ࠬࡍࠢ࠻࡞
㧔⿥㖸ᵄࡀࡉ࡜ࠗࠩ࡯઀᭽㧕5.4

Fig.7 ㋕Ớᐲߩࠬࡍࠢ࠻࡞ߦ߅ࠃ߷ߔᓇ㗀

Table 3 JIS ㋕㍑⹺⸽‛⾰䈱ಽᨆ⚿ᨐ

5.2

P conc.(%)

54.8
4.6
600

800
1000 1200
Fe content [ ppm ]1400

Fig.8 Fe Ớᐲߩ P Ớᐲߦ߅ࠃ߷ߔᓇ㗀㩷㧙㧙

JIS

Certificate

Analysis155-150.0016

0.0020233-1

0.00690.0063

4.

ᐔⴧታ㛎

4.1.

ታ㛎ⵝ⟎䈍䉋䈶ᚻ㗅

Iron pipeᧄ⎇ⓥ䈪䈲࿕૕㋕䋭ṁⲢ䉴䊤䉫㑆䈱ਇ⚐‛ర

Water-cooled cap

Exhaust gas㋕䉕ᓧ䈢႐ว䇮䉴䊤䉫ਛ䈮㋕䈏ಽᢔ䈜䉎䈖䈫䈏੍

Thermocoupleᗐ䈘䉏䇮㋕䉕ಽ㔌࿁෼ᓟಽᨆ䈜䉎䈱䈲㕖Ᏹ䈮࿎㔍

Iron foil

HB tubeHeater⚛ಽ㈩䉕᷹ቯ䈚䈢䇯ṁⲢ䉴䊤䉫䉕ㆶర䈚䈩࿕⋧䈱䈪䈅䉎䇯䈠䈖䈪ᧄ⎇ⓥ䈪䈲 Jeoungkiu 䉌4)䉇દ⮮㩷 㩷 㩷 㩷5)

MgOcrucible䉌 䉕ෳ⠨䈮䈚䈢ᚻᴺ䉕↪䈇䈩ᐔⴧ⹜㛎䉕ⴕ䈦䈢䇯એਅ䈮ᚻ㗅䉕␜䈜䇯Fig.9 䈮␜䈜❑ဳᛶ᛫Ἱౝ䉕↪ 䈇 䈩 䇮 MgO 䉎 䈧 䈿 䈮 ౉ 䉏 䈢 ㉄ ൻ ‛ ⹜ ⮎ 䉕1350㷄䈪ṁⲢᓟ䇮࿕૕㋕

Pedestal Al2O3

䋨0.1mm㬍25mm㬍30HB tube䌭䌭䋩䉕ṁⲢ㉄ൻ‛䈮ᶐẃ䈘䈞䇮৻ቯᤨ㑆଻ᜬᓟ

CO/CO2 or
H2/H2O gasข䉍಴䈚ᕆ಄䈚䈢䇯଻ᜬᤨ㑆䈲੍஻ታ㛎䈮䉋䉍 20ᤨ㑆䈫䈚䈢䇯㔓࿐᳇䈲 CO/CO2 ᷙว䉧䉴䈪 PO2䋽

Water-cooled capFig.9 ታ㛎ⵝ⟎࿑

10-13䌾10-11.5atm 䈮೙ᓮ䈚䈢䇯ᓧ䉌䉏䈢㋕⹜ᢱ䈲䉻䉟䊟䊝䊮䊄䊥䊠䊷䉺䊷䈪⴫㕙䈮ઃ⌕䈚䈢䉴䊤䉫䉕㒰෰ᓟ䇮㉄ṁ⸃䈚 MIBK 䈪㋕ಽ㔌ᓟ䇮⿥㖸ᵄ䊈䊑䊤

102ᓸ☳⎈䈚䇮㊄ዻ Fe 䉕⥇⚛䊜䉺䊉䊷䊦䈪㒰෰ᓟ㉄ṁ
⸃䈚䇮SiO2 䈲㊀㊂ᴺ䇮䈠䈱ઁ䈱ర⚛䈲 ICP-AES 䈪
ಽᨆ䈚䈢䇯
4.2.

Lp [-]

䉟䉱䊷઀᭽ ICP-AES 䈪 P ಽᨆ䈚䈢䇯䉴䊤䉫⹜ᢱ䈲

101

⚿ᨐ

C/S
1.0
0.5

100

P ಽ㈩Ყ LP 䈻䈱㉄⚛ಽ࿶䈱ᓇ㗀䉕 Fig.10 䈮䇮-13䉴䊤䉫ਛో Fe Ớᐲ䈱ᓇ㗀䉕 Fig.11 䈮␜䈜䇯ᒰὼ䈣䈏㉄⚛ಽ࿶䉇Ⴎၮᐲ䈱਄᣹䈮઻䈇 LP 䈲Ⴧട䈚䈢䇯䉁䈢 Fig.11 䉋䉍 T䍃Fe 䉕 5%䋬Ⴎၮᐲ 1 䈱႐ว P ಽ-12
Log PO2-11

Fig.10 ㉄⚛ಽ࿶ߣ࿕૕㋕-ࠬ࡜ࠣ㑆ߩ P ಽ㈩ߩ
㑐ଥ㈩䈲 50 ⒟ᐲ䈮䈭䉎䈖䈫䈏䉒䈎䉎䇯䈖䈱ᤨ䊜䉺䊦ਛ䈱P Ớᐲ [%P]䈲 0.024mass%⒟ᐲ䈪䇮䈖䈱୯䈲ォἹ102

ᧄ⎇ⓥ䈱ታ㛎⚿ᨐ䉕 BALAJIVA 䉌 6)䇮᳓ᷰ䉌 7)䇮
Healy 䉌 8)䈱ឭ᩺ᑼ䈫Ყセ䈚䈢䈏䉋䈇⋧㑐㑐ଥ䈲ᓧ䉌䉏䈭䈎䈦䈢䇯䈖䉏䉌䈱⣕ῂᐔⴧᑼ䈲ṁ㋕/⵾㍑䉴

Lp [-]♖㍰ᓟ䈱[%P]䈫ห᳓Ḱ䈱චಽૐ䈇୯䈪䈅䉎䇯

101
C/S
0.5
1.0䊤䉫㑆䈱 P ಽ㈩ᐔⴧ䈱᷹ቯ䊂䊷䉺䉕ၮ䈮⏕┙䈘䉏䈢ታ㛎ᑼ䈪䈅䉎䇯ᧄታ㛎䈲ታ㛎᷷ᐲ䇮䉴䊤䉫⚵ᚑ

100䈏⇣䈭䉎䈉䈋䇮㋕䈏࿕૕䈫䈚䈩ሽ࿷䈚䈩䈇䉎䈢䉄䇮ㆡᔕ䈘䈞䉎䈢䉄䈮䈲䊝䊂䊦ᑼ䈱ᡷ⦟䈏ᔅⷐ䈪䈅䉎䇯੹ᓟ䇮䈘䉌䈮ᐢ▸࿐䈱㉄⚛ಽ࿶䇮䉴䊤䉫⚵ᚑ䈪䈱᷹ቯ䉕ⴕ䈇䇮ᦨ⚳⊛䈮䊝䊂䊦ൻ䈜䉎੍ቯ䈪䈅䉎䇯

0102030T-Fe in oxide [ % ]40Fig.11 ࿕૕㋕-ࠬ࡜ࠣ㑆ߩ P ಽ㈩ߦ߅ࠃ߷ߔ
ో Fe Ớᐲߩᓇ㗀㧙㧙5.

䉁䈫䉄䋱䋩 FactSAGE 䉕↪䈇䈢⹜▚䈮䉋䉍᳓⚛೑↪䈮䉋䉍 P 䉕ㆶర䈘䈞䈝䈮㋕䈱䉂ㆶర䈪䈐䉎น⢻ᕈ䉕␜䈚䈢䇯䋲䋩 Fe ⹜ᢱ䉕㉄ṁ⸃ᓟ䇮MIBK 䈪 Fe 㒰෰䈚䇮⿥㖸ᵄ䊈䊑䊤䉟䉱䊷઀᭽䈱 ICP-AES 䈪ಽᨆ䈜䉎䈖䈫䈪
ICP-AES 䉕↪䈇䈢㋕ਛᓸ㊂ P ಽᨆ䈮ᚑഞ䈚䈢䇯䋳䋩 ࿕૕㋕-䉴䊤䉫㑆䈱ᐔⴧ P ಽ㈩䉕᷹ቯ䈚䈢⚿ᨐ䇮Ⴎၮᐲ 1.0 ⒟ᐲ䈪 P Ớᐲ䈏චಽૐ䈇㋕䈏ᓧ䉌䉏䉎䈖䈫䈏್᣿䈚䈢䇯⻢ㄉᧄ⎇ⓥ䈲䇮䋨⽷䋩JFE21 ਎♿⽷࿅ 2008 ᐕᐲᛛⴚ⎇ⓥഥᚑ䈱ᡰេ䈱䉅䈫䈪ⴕ䈦䈢䇯䈖䈖䈮ᗵ⻢䈱ᗧ䉕⴫䈜䉎䇯
References

1) L. C. Oertel and A. Costa e Silva: Calphad, 23/3-4(1999), pp.379-391
2) ർᎹⲢ,㐅䈫㍑: 88/8(2002), pp.430-443
3) ⪦⼱ᔒ㇢,੗ญᵏቁ,㐳ဈᔀ਽: 㐅䈫㍑, 70/14(1984), pp.1689-1696
4) Jeoungkiu IM. Kazuki MORITA and Nobuo SANO: ISIJ Int. Vol. 36 (1996), No, 5, pp. 517-521
5) દ⮮౏ਭ䇮૒㊁ା㓶:㋕䈫㍑䇮69䋨1983䋩
6) K.BALAJIVA and P.VAJRAGUPTA:JISI, 155(1947),p.563.
7) H.Suito, Ryo Inoue, and Minoru Takada: Tetsu-to-Hagane,67(1981), p.75.
8) G.W.Healy: JISI,178(1952), p.664.

㧙㧙