Year: 2024
Type: article
Abstract: To effectively utilize industrial lignin, a large amount of waste produced by the pulp and paper industry, this paper primarily explores its potential as a substitute for coal-based reducing agents in the reduction of iron oxides. The weight change, phase change, and activation energy change during the reduction of iron oxide by industrial lignin were characterized using detection methods such as TG-DTG-DSC, XRD, and SEM. The results show that the maximum weight loss rate of industrial lignin reducing iron oxide is (4.52%·min−1) > Lu’an anthracite (2.01%·min−1) > Shenmu bituminous coal (1.57%·min−1). The activation energy variation range during the reduction of Fe2O3 by industrial lignin, calculated using the Flynn–Wall–Ozawa (FWO) method, is 241.91~463.51 kJ·mol−1, and the activation energy first decreased, then increased, then decreased slightly with the increase of conversion fraction. There is a coupling effect in the reduction of Fe2O3 by industrial lignin.
Source: Metals
DOI: 10.3390/met14121467
Authors: Dongwen Xiang, Qiang Zhang, Guoqing Wu, Yajie Wang, Dong Li, Qinghua Zhang, Huaxin Hu
Institutions: Linyi University, Beihang University
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,955
Award: G6923163184
OpenAlex ID: W4405700562