TY - JOUR
T1 - Synthesis of schorl doped iron ore tailings glass-ceramics with superior performance
AU - Meng, Junping
AU - Liu, Fan
AU - Srinivasakannan, Chandrasekar
AU - Duan, Xinhui
AU - Liang, Jinsheng
N1 - Funding Information:
This research was funded by National Key Research and Development Program of China , Grant No. 2019YFC1904605 .
Publisher Copyright:
© 2022
PY - 2023/1/15
Y1 - 2023/1/15
N2 - The diopside-based glass-ceramics were prepared by using iron ore tailings as main raw materials and schorl as additive. The addition of schorl was found to effectively reduce the crystallization activation energy and to promote the crystallization of diopside. The diopside and schorl were evenly distributed and sufficiently interlocked together, which improved the flexural strength and bulk density of glass-ceramics. The far-infrared emissivity of glass-ceramics increased with the addition of schorl due to intrinsic far-infrared characteristics of schorl, while the replacement of Mg and Si ions in diopside by Fe ions also contributed to the enhancing far-infrared emissivity due to lattice distortion and symmetry reduction of diopside crystal. At 10 wt.% schorl addition, the glass-ceramics was at its best, with flexural strength of 107.03 MPa, bulk density of 2.66 g/cm3, and far-infrared emissivity of 0.928. This work lays foundation to manufacture of high value glass-ceramics with superior properties utilizing waste iron ore tailings and schorl.
AB - The diopside-based glass-ceramics were prepared by using iron ore tailings as main raw materials and schorl as additive. The addition of schorl was found to effectively reduce the crystallization activation energy and to promote the crystallization of diopside. The diopside and schorl were evenly distributed and sufficiently interlocked together, which improved the flexural strength and bulk density of glass-ceramics. The far-infrared emissivity of glass-ceramics increased with the addition of schorl due to intrinsic far-infrared characteristics of schorl, while the replacement of Mg and Si ions in diopside by Fe ions also contributed to the enhancing far-infrared emissivity due to lattice distortion and symmetry reduction of diopside crystal. At 10 wt.% schorl addition, the glass-ceramics was at its best, with flexural strength of 107.03 MPa, bulk density of 2.66 g/cm3, and far-infrared emissivity of 0.928. This work lays foundation to manufacture of high value glass-ceramics with superior properties utilizing waste iron ore tailings and schorl.
KW - Crystallization
KW - Far-infrared emissivity
KW - Glass-ceramics
KW - Iron ore tailings
KW - Schorl
UR - http://www.scopus.com/inward/record.url?scp=85141892562&partnerID=8YFLogxK
U2 - 10.1016/j.jnoncrysol.2022.122034
DO - 10.1016/j.jnoncrysol.2022.122034
M3 - Article
AN - SCOPUS:85141892562
SN - 0022-3093
VL - 600
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
M1 - 122034
ER -