Reduction Kinetics of Mill Scale Briquettes by Using A3 Fine Coal as a Reductant
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Published:2021-04-01
Issue:4
Volume:21
Page:2563-2567
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ISSN:1533-4880
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Container-title:Journal of Nanoscience and Nanotechnology
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language:en
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Short-container-title:j nanosci nanotechnol
Author:
Viet Nguyen Hoang1,
Quynh Pham Ngoc Dieu1,
Oanh Nguyen Thi Hoang1
Affiliation:
1. School of Materials Science and Engineering, Hanoi University of Science and Technology, Hanoi, 100000, Vietnam
Abstract
In this work, a mixture of mill scale with 5 wt% molasses as binder was pressed under pressure of 200 MPa to prepare briquettes. The reduction process was performed at the temperature of 1000, 1050, 1100, 1150 and 1200 °C in the bed of A3 fine coal as the reductant. The degree of
reduction was evaluated at time duration of 15, 30, 45, 60, 90 and 150 minutes, after the furnace temperature reached the predetermined reduction temperature. The highest reduction degree is 94.7% at the reduction process temperature of 1200 °C. Reaction rate constant (k) increased
from 4.63×10-4 to 5.03×10-3 min-1 when the temperature increased from 1000 to 1200 °C. The apparent activation energy of the reduction reaction (Ea) is about 95.6 kJ/mole.
Publisher
American Scientific Publishers
Subject
Condensed Matter Physics,General Materials Science,Biomedical Engineering,General Chemistry,Bioengineering