- Tytuł:
- A novel process for extraction of iron from a refractory red mud
- Autorzy:
-
Ding, Wei
Xiao, Junhui
Peng, Yang
Shen, Siyue
Chen, Tao
Zou, Kai
Wang, Zhen - Powiązania:
- https://bibliotekanauki.pl/articles/1450194.pdf
- Data publikacji:
- 2020
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
red mud
sodium sulfate
segregation roasting
magnetic separation
iron recovery - Opis:
- Red mud is a kind of solid waste produced during alumina extraction from bauxite. To extraction valuable iron from red mud, the technology of adding sodium sulfate-segregation roasting-magnetic separation to treat red mud was developed. During the paper, the effects of various process parameters on the extraction of iron by segregation roasting-magnetic separation were studied, and the phase transformation behavior and microstructure of iron are explored. Repeated test results showed that magnetic concentrate (mass percent), TFe of 80.29 % and overall iron recovery of 92.08 %was obtained. The X-ray diffraction (XRD) and scanning electron microscopy (SEM) results indicated that after the segregation roasting, the hematite was transformed into a new metal phase consisting mainly of metallic iron and magnetite. The addition of sodium sulfate during the segregation roasting can obviously improve the efficiency of segregation roasting-magnetic separation for iron extraction.
- Źródło:
-
Physicochemical Problems of Mineral Processing; 2020, 56, 6; 125-136
1643-1049
2084-4735 - Pojawia się w:
- Physicochemical Problems of Mineral Processing
- Dostawca treści:
- Biblioteka Nauki
Artykuł