Transport rate of gaseous phosphorus into solid iron under reducing atmosphere.

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概要

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• Transport rate of gaseous phosphorus into solid iron under reducing atmosphere was observed by a gravimetric procedure to obtain fundamental data to discuss transport mechanism of phosphorus into reduced iron in a blast furnace.A kind of killed and rolled steel sheet and non worked electrolytic iron sheet were used as samples. Partial pressure of phosphorus vapor was controlled by using equilibrium relation between PP2, Ca3 (PO4)2, SiO2, C, CaSiO3 and CO. Phosphorus partial pressure and temperature were every one order between 4×10–6 and 4×10–2 atm, and every 50°C between 900 and 1050°C, respectively.Experimental results are as follows:(1) Transport rate obeyed a parabolic rate law.(2) Relations between the rate constants of the parabolic rate law, k, the phosphorus partial pressure, PP2, and the temperature, T, are as follows:In the case of killed steel, log k=0.14 log PP2+5.68–15.6 ×103/TIn the case of the electrolytic iron, log k=0.14 log PP2+4.94–15.6×103/T(3) Reaction product on a surface of solid iron was Fe2P.

• The Iron and Steel Institute of Japanの論文

著者

• Sasabe Minoru

  Department Of Mechanical Science Faculty Of Engineering Chiba Institute Of Technology

• Tate Mitsuru

  Department of Metallurgical Engineering, Chiba Institute of Technology

• Otsuka Michio

  Department of Metallurgical Engineering, Chiba Institute of Technology

• Tanaka Katsuhiko

  Department of Metallurgical Engineering, Chiba Institute of Technology

• Kiyosawa Yoshinari

  Graduate School, Chiba Institute of Technology

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• Transport rate of gaseous phosphorus into solid iron under reducing atmosphere.

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