THE EFFECT OF VOLATILE MATTER OF NON-COKING COAL ON THE REDUCTION OF IRON OXIDE AT NON-ISOTHERMAL CONDITION

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HEMMATI M.H.; VAHDATI KHAKI J.; ZABETT A.

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Journal Paper

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Journal: Iranian Journal of Materials Science and Engineering Year:2015 | Volume:12 | Issue:3 Page(s): 66-74

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Title

THE EFFECT OF VOLATILE MATTER OF NON-COKING COAL ON THE REDUCTION OF IRON OXIDE AT NON-ISOTHERMAL CONDITION

Author(s)

HEMMATI M.H. | VAHDATI KHAKI J. | ZABETT A. | Issue Writer Certificate

Keywords

VOLATILE MATTER

IRON OXIDE

NON-COKING COAL

NON ISOTHERM

REDUCTION

Abstract

The VOLATILE MATTER of NON-COKING COAL was used for the REDUCTION of hematite in argon atmosphere at non isothermal condition. A thermal gravimeter furnace enable to use an 80 mm-height crucible was designed for the experiments to measure the weight changes of about 10 grams samples. A two-layered array of coal and alumina and four-layered array of IRON OXIDE, alumina, coal and alumina was used for the de volatilization and REDUCTION experiments, respectively. The net effect of volatile REDUCTION of Fe2O3 was determined and it was observe that 45% REDUCTION has been achieved. Three distinct regions were recognized on the REDUCTION curve. The REDUCTION of hematite to magnetite could be completely distinguished from the two other regions on the REDUCTION curve. At 600-950°C, the REDUCTION was accelerated. 63% of VOLATILE MATTER resulted in 25% of total REDUCTION before 600°C while the remaining VOLATILE MATTER contributed to 75% of the total REDUCTION. From the REDUCTION rate diagram, the stepwise REDUCTION of the IRON OXIDEs could be concluded. The partial overlap of the REDUCTION steps were identified through the XRD studies. The starting temperature of magnetite and wiistite REDUCTION were determined at about 585°C and at 810°C, respectively.

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APA: Copy

HEMMATI, M.H., VAHDATI KHAKI, J., & ZABETT, A.. (2015). THE EFFECT OF VOLATILE MATTER OF NON-COKING COAL ON THE REDUCTION OF IRON OXIDE AT NON-ISOTHERMAL CONDITION. IRANIAN JOURNAL OF MATERIALS SCIENCE AND ENGINEERING, 12(3), 66-74. SID. https://sid.ir/paper/276830/en

Vancouver: Copy

HEMMATI M.H., VAHDATI KHAKI J., ZABETT A.. THE EFFECT OF VOLATILE MATTER OF NON-COKING COAL ON THE REDUCTION OF IRON OXIDE AT NON-ISOTHERMAL CONDITION. IRANIAN JOURNAL OF MATERIALS SCIENCE AND ENGINEERING[Internet]. 2015;12(3):66-74. Available from: https://sid.ir/paper/276830/en

IEEE: Copy

M.H. HEMMATI, J. VAHDATI KHAKI, and A. ZABETT, “THE EFFECT OF VOLATILE MATTER OF NON-COKING COAL ON THE REDUCTION OF IRON OXIDE AT NON-ISOTHERMAL CONDITION,” IRANIAN JOURNAL OF MATERIALS SCIENCE AND ENGINEERING, vol. 12, no. 3, pp. 66–74, 2015, [Online]. Available: https://sid.ir/paper/276830/en

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