Abstract
Lightweight aggregates from mixtures of gold tailing, red mud and waste limestone were produced using a high-temperature sintering process. Raw materials were quantitatively analyzed, and hazardous materials were identified by chemical analysis. An oxide system corresponding to the major components of the mining waste was carefully designed based on the CaO–FeOx–Al2O3–SiO2 quaternary system similar to lightweight aggregates. Sintering, softening and melting behaviour of the sample was investigated to optimize the sintering conditions. After heating, specimens were analyzed to clarify its sintering mechanism. Phase change during sintering was observed by X-ray diffraction, and the effect of temperature on the structural unit changes of the specimen was confirmed by Fourier transform-infrared spectroscopy. Microscopic analysis by scanning electron microscope-energy dispersive X-ray analysis was carried out to identify the morphological changes of the sample. Physical properties of the specimen were measured, and the compressive strength was improved with less water absorption.
| Original language | English |
|---|---|
| Pages (from-to) | 1-10 |
| Number of pages | 10 |
| Journal | Transactions of the Institutions of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy |
| DOIs | |
| Publication status | Published - 2018 Jan 2 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Geotechnical Engineering and Engineering Geology
- Geochemistry and Petrology
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Potential utilization of hazardous mining wastes in the production of lightweight aggregates. / Park, Hyunsik; Ha, Minchul; Shin, Doyun; Kim, Minseok; Sohn, Il.
In: Transactions of the Institutions of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy, 02.01.2018, p. 1-10.Research output: Contribution to journal › Article
TY - JOUR
T1 - Potential utilization of hazardous mining wastes in the production of lightweight aggregates
AU - Park, Hyunsik
AU - Ha, Minchul
AU - Shin, Doyun
AU - Kim, Minseok
AU - Sohn, Il
PY - 2018/1/2
Y1 - 2018/1/2
N2 - Lightweight aggregates from mixtures of gold tailing, red mud and waste limestone were produced using a high-temperature sintering process. Raw materials were quantitatively analyzed, and hazardous materials were identified by chemical analysis. An oxide system corresponding to the major components of the mining waste was carefully designed based on the CaO–FeOx–Al2O3–SiO2 quaternary system similar to lightweight aggregates. Sintering, softening and melting behaviour of the sample was investigated to optimize the sintering conditions. After heating, specimens were analyzed to clarify its sintering mechanism. Phase change during sintering was observed by X-ray diffraction, and the effect of temperature on the structural unit changes of the specimen was confirmed by Fourier transform-infrared spectroscopy. Microscopic analysis by scanning electron microscope-energy dispersive X-ray analysis was carried out to identify the morphological changes of the sample. Physical properties of the specimen were measured, and the compressive strength was improved with less water absorption.
AB - Lightweight aggregates from mixtures of gold tailing, red mud and waste limestone were produced using a high-temperature sintering process. Raw materials were quantitatively analyzed, and hazardous materials were identified by chemical analysis. An oxide system corresponding to the major components of the mining waste was carefully designed based on the CaO–FeOx–Al2O3–SiO2 quaternary system similar to lightweight aggregates. Sintering, softening and melting behaviour of the sample was investigated to optimize the sintering conditions. After heating, specimens were analyzed to clarify its sintering mechanism. Phase change during sintering was observed by X-ray diffraction, and the effect of temperature on the structural unit changes of the specimen was confirmed by Fourier transform-infrared spectroscopy. Microscopic analysis by scanning electron microscope-energy dispersive X-ray analysis was carried out to identify the morphological changes of the sample. Physical properties of the specimen were measured, and the compressive strength was improved with less water absorption.
UR - http://www.scopus.com/inward/record.url?scp=85012285381&partnerID=8YFLogxK
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U2 - 10.1080/03719553.2017.1288359
DO - 10.1080/03719553.2017.1288359
M3 - Article
AN - SCOPUS:85012285381
SP - 1
EP - 10
JO - Transactions of the Institutions of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy
JF - Transactions of the Institutions of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy
SN - 0371-9553
ER -