Promoting spinel formation and growth for preparation of refractory materials from ferronickel slag

Foquan Gu; Zhiwei Peng; Yuanbo Zhang; Huimin Tang; Weiguang Tian; Joonho Lee; Mingjun Rao; Guanghui Li; Tao Jiang

doi:10.1111/ijac.13481

Promoting spinel formation and growth for preparation of refractory materials from ferronickel slag

Foquan Gu, Zhiwei Peng, Yuanbo Zhang, Huimin Tang, Weiguang Tian, Joonho Lee, Mingjun Rao, Guanghui Li, Tao Jiang

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

The study provides a method for improving the quality of the refractory material prepared from ferronickel slag by promoting the spinel formation and growth in the slag which was sintered with sintered magnesia and chromium oxide in a broad sintering temperature range from 1200°C to 1500°C. According to the thermodynamic analysis, except for forsterite due to the addition of sintered magnesia, a number of high-melting point spinel phases can also be formed in the presence of chromium oxide and this trend becomes more apparent with increasing sintering temperature, along with declined presence of low-melting point clinopyroxene, mainly enstatite. This expectation was verified by conversion of a part of the original phase of ferronickel slag, olivine, to two main spinel phases, including magnesium aluminate spinel and donathite which was produced by the replacement of nontoxic Cr³⁺ ions with Fe³⁺ ions in the octahedral vacancies of magnesium chromate spinel. The formation and growth of these spinel phases were promoted by elevating temperature from 1200°C to 1500°C, which accelerated the transition of initially generated enstatite to a glassy phase, in favor of densification. The formation and growth of spinel during sintering contributed to high refractoriness and compressive strength of the resulting refractory materials.

Original language	English
Pages (from-to)	1701-1712
Number of pages	12
Journal	International Journal of Applied Ceramic Technology
Volume	17
Issue number	4
DOIs	https://doi.org/10.1111/ijac.13481
Publication status	Published - 2020 Jul 1

Bibliographical note

Funding Information:
This work was partially supported by the National Natural Science Foundation of China under Grant 51774337, the Science and Technology Planning Project of Hunan Province, China, under Grant 2019RS2008, the Key Laboratory for Solid Waste Management and Environment Safety (Tsinghua University) Open Fund under Grant SWMES2017‐04, the Open Project of State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials under Grant 17kffk11, the Co‐Innovation Center for Clean and Efficient Utilization of Strategic Metal Mineral Resources under Grant 2014‐405, the Open Sharing Fund for the Large‐Scale Instruments and Equipments of Central South University under Grant CSUZC201905, and the Fundamental Research Funds for the Central Universities of Central South University under Grants 2018zzts220 and 2018zzts779.

Funding Information:
This work was partially supported by the National Natural Science Foundation of China under Grant 51774337, the Science and Technology Planning Project of Hunan Province, China,?under Grant?2019RS2008, the Key Laboratory for Solid Waste Management and Environment Safety (Tsinghua University) Open Fund under Grant SWMES2017-04, the Open Project of State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials under Grant 17kffk11, the Co-Innovation Center for Clean and Efficient Utilization of Strategic Metal Mineral Resources under Grant 2014-405, the Open Sharing Fund for the Large-Scale Instruments and Equipments of Central South University under Grant CSUZC201905, and the Fundamental Research Funds for the Central Universities of Central South University under Grants 2018zzts220 and 2018zzts779.

Publisher Copyright:
© 2020 The American Ceramic Society

Keywords

densification
ferronickel slag
refractory materials
sintering temperature
spinel

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Marketing
Materials Chemistry

Access to Document

10.1111/ijac.13481

Cite this

@article{8c0c311c993a49a9ab672ba3c8c59a65,

title = "Promoting spinel formation and growth for preparation of refractory materials from ferronickel slag",

abstract = "The study provides a method for improving the quality of the refractory material prepared from ferronickel slag by promoting the spinel formation and growth in the slag which was sintered with sintered magnesia and chromium oxide in a broad sintering temperature range from 1200°C to 1500°C. According to the thermodynamic analysis, except for forsterite due to the addition of sintered magnesia, a number of high-melting point spinel phases can also be formed in the presence of chromium oxide and this trend becomes more apparent with increasing sintering temperature, along with declined presence of low-melting point clinopyroxene, mainly enstatite. This expectation was verified by conversion of a part of the original phase of ferronickel slag, olivine, to two main spinel phases, including magnesium aluminate spinel and donathite which was produced by the replacement of nontoxic Cr3+ ions with Fe3+ ions in the octahedral vacancies of magnesium chromate spinel. The formation and growth of these spinel phases were promoted by elevating temperature from 1200°C to 1500°C, which accelerated the transition of initially generated enstatite to a glassy phase, in favor of densification. The formation and growth of spinel during sintering contributed to high refractoriness and compressive strength of the resulting refractory materials.",

keywords = "densification, ferronickel slag, refractory materials, sintering temperature, spinel",

author = "Foquan Gu and Zhiwei Peng and Yuanbo Zhang and Huimin Tang and Weiguang Tian and Joonho Lee and Mingjun Rao and Guanghui Li and Tao Jiang",

note = "Funding Information: This work was partially supported by the National Natural Science Foundation of China under Grant 51774337, the Science and Technology Planning Project of Hunan Province, China, under Grant 2019RS2008, the Key Laboratory for Solid Waste Management and Environment Safety (Tsinghua University) Open Fund under Grant SWMES2017‐04, the Open Project of State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials under Grant 17kffk11, the Co‐Innovation Center for Clean and Efficient Utilization of Strategic Metal Mineral Resources under Grant 2014‐405, the Open Sharing Fund for the Large‐Scale Instruments and Equipments of Central South University under Grant CSUZC201905, and the Fundamental Research Funds for the Central Universities of Central South University under Grants 2018zzts220 and 2018zzts779. Funding Information: This work was partially supported by the National Natural Science Foundation of China under Grant 51774337, the Science and Technology Planning Project of Hunan Province, China,?under Grant?2019RS2008, the Key Laboratory for Solid Waste Management and Environment Safety (Tsinghua University) Open Fund under Grant SWMES2017-04, the Open Project of State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials under Grant 17kffk11, the Co-Innovation Center for Clean and Efficient Utilization of Strategic Metal Mineral Resources under Grant 2014-405, the Open Sharing Fund for the Large-Scale Instruments and Equipments of Central South University under Grant CSUZC201905, and the Fundamental Research Funds for the Central Universities of Central South University under Grants 2018zzts220 and 2018zzts779. Publisher Copyright: {\textcopyright} 2020 The American Ceramic Society",

year = "2020",

month = jul,

day = "1",

doi = "10.1111/ijac.13481",

language = "English",

volume = "17",

pages = "1701--1712",

journal = "International Journal of Applied Ceramic Technology",

issn = "1546-542X",

publisher = "Wiley-Blackwell",

number = "4",

}

TY - JOUR

T1 - Promoting spinel formation and growth for preparation of refractory materials from ferronickel slag

AU - Gu, Foquan

AU - Peng, Zhiwei

AU - Zhang, Yuanbo

AU - Tang, Huimin

AU - Tian, Weiguang

AU - Lee, Joonho

AU - Rao, Mingjun

AU - Li, Guanghui

AU - Jiang, Tao

N1 - Funding Information: This work was partially supported by the National Natural Science Foundation of China under Grant 51774337, the Science and Technology Planning Project of Hunan Province, China, under Grant 2019RS2008, the Key Laboratory for Solid Waste Management and Environment Safety (Tsinghua University) Open Fund under Grant SWMES2017‐04, the Open Project of State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials under Grant 17kffk11, the Co‐Innovation Center for Clean and Efficient Utilization of Strategic Metal Mineral Resources under Grant 2014‐405, the Open Sharing Fund for the Large‐Scale Instruments and Equipments of Central South University under Grant CSUZC201905, and the Fundamental Research Funds for the Central Universities of Central South University under Grants 2018zzts220 and 2018zzts779. Funding Information: This work was partially supported by the National Natural Science Foundation of China under Grant 51774337, the Science and Technology Planning Project of Hunan Province, China,?under Grant?2019RS2008, the Key Laboratory for Solid Waste Management and Environment Safety (Tsinghua University) Open Fund under Grant SWMES2017-04, the Open Project of State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials under Grant 17kffk11, the Co-Innovation Center for Clean and Efficient Utilization of Strategic Metal Mineral Resources under Grant 2014-405, the Open Sharing Fund for the Large-Scale Instruments and Equipments of Central South University under Grant CSUZC201905, and the Fundamental Research Funds for the Central Universities of Central South University under Grants 2018zzts220 and 2018zzts779. Publisher Copyright: © 2020 The American Ceramic Society

PY - 2020/7/1

Y1 - 2020/7/1

N2 - The study provides a method for improving the quality of the refractory material prepared from ferronickel slag by promoting the spinel formation and growth in the slag which was sintered with sintered magnesia and chromium oxide in a broad sintering temperature range from 1200°C to 1500°C. According to the thermodynamic analysis, except for forsterite due to the addition of sintered magnesia, a number of high-melting point spinel phases can also be formed in the presence of chromium oxide and this trend becomes more apparent with increasing sintering temperature, along with declined presence of low-melting point clinopyroxene, mainly enstatite. This expectation was verified by conversion of a part of the original phase of ferronickel slag, olivine, to two main spinel phases, including magnesium aluminate spinel and donathite which was produced by the replacement of nontoxic Cr3+ ions with Fe3+ ions in the octahedral vacancies of magnesium chromate spinel. The formation and growth of these spinel phases were promoted by elevating temperature from 1200°C to 1500°C, which accelerated the transition of initially generated enstatite to a glassy phase, in favor of densification. The formation and growth of spinel during sintering contributed to high refractoriness and compressive strength of the resulting refractory materials.

AB - The study provides a method for improving the quality of the refractory material prepared from ferronickel slag by promoting the spinel formation and growth in the slag which was sintered with sintered magnesia and chromium oxide in a broad sintering temperature range from 1200°C to 1500°C. According to the thermodynamic analysis, except for forsterite due to the addition of sintered magnesia, a number of high-melting point spinel phases can also be formed in the presence of chromium oxide and this trend becomes more apparent with increasing sintering temperature, along with declined presence of low-melting point clinopyroxene, mainly enstatite. This expectation was verified by conversion of a part of the original phase of ferronickel slag, olivine, to two main spinel phases, including magnesium aluminate spinel and donathite which was produced by the replacement of nontoxic Cr3+ ions with Fe3+ ions in the octahedral vacancies of magnesium chromate spinel. The formation and growth of these spinel phases were promoted by elevating temperature from 1200°C to 1500°C, which accelerated the transition of initially generated enstatite to a glassy phase, in favor of densification. The formation and growth of spinel during sintering contributed to high refractoriness and compressive strength of the resulting refractory materials.

KW - densification

KW - ferronickel slag

KW - refractory materials

KW - sintering temperature

KW - spinel

UR - http://www.scopus.com/inward/record.url?scp=85079422441&partnerID=8YFLogxK

U2 - 10.1111/ijac.13481

DO - 10.1111/ijac.13481

M3 - Article

AN - SCOPUS:85079422441

SN - 1546-542X

VL - 17

SP - 1701

EP - 1712

JO - International Journal of Applied Ceramic Technology

JF - International Journal of Applied Ceramic Technology

IS - 4

ER -

Promoting spinel formation and growth for preparation of refractory materials from ferronickel slag

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this