Increase of Iron Concentration and Reduction of Impurities in Red Mud from the Wenshan Area of Yunnan Province by Segregation Roasting-Low Intensity Magnetic Separation

Jump To References Section

Authors

  • Wei Ding
     School of Environment of Southwest University of Science and Technology, Mianyang 621010 ,CN
  • Yang Peng
     School of Environment of Southwest University of Science and Technology, Mianyang 621010 ,CN
  • Qiang Wu
     School of Environment of Southwest University of Science and Technology, Mianyang 621010 ,CN
  • Siyue Shen
     School of Environment of Southwest University of Science and Technology, Mianyang 621010 ,CN
  • Junhui Xiao
     Key Laboratory of Radioactive and Rare Scattered Minerals, Ministry of Land and Resources, Shaoguan 512026 ,CN
  • Guanjie Liang
     Key Laboratory of Radioactive and Rare Scattered Minerals, Ministry of Land and Resources, Shaoguan 512026 ,CN
  • Wenxiao Huang
     Key Laboratory of Radioactive and Rare Scattered Minerals, Ministry of Land and Resources, Shaoguan 512026 ,CN

Keywords:

Red mud, separation roasting, magnetic separation, metallic iron

Abstract

Red mud is a solid waste produced during alumina extraction from bauxite. In this study, we pretreated red mud by segregation roasting to convert the iron from weak magnetic minerals to ferromagnetic minerals and then subjected the material to grinding and low intensity magnetic separation to obtain iron concentration. The effects of the chlorinating agent type, chlorinating agent dosage, reducing agent dosage, temperature, reaction time, additive, grinding fineness and magnetic field strength on the iron concentrate grade and recovery rate are studied. At a red mud/KCl/coke/ Na2SO4 mass ratio of 100:15:15:10, segregation roasting at 1100°C for 60 min, the roasted ore is ground to about 95 wt.% passing 0.045 mm and a magnetic field strength of 0.22 T, the final iron concentrate grade is 78.29% and the recovery is 84.08%, which is an efficient improvement of the valuable metal iron in red mud. The X-Ray Diffraction, Scanning Electron Microscopy and Energy Dispersive X-ray Spectroscopy analysis of the iron concentrate shows that before the segregation roasting, the precious metal iron in the red mud is mainly in the form of Fe2O3. After the segregation roasting, the iron is transformed into a new iron mineral phase mainly composed of metal Fe and Fe3O4. The main impurities in the iron concentrate are calcium, silicon and aluminum.

Downloads

Download data is not yet available.

Downloads

Published

2022-10-20

How to Cite

Ding, W., Peng, Y., Wu, Q., Shen, S., Xiao, J., Liang, G., & Huang, W. (2022). Increase of Iron Concentration and Reduction of Impurities in Red Mud from the Wenshan Area of Yunnan Province by Segregation Roasting-Low Intensity Magnetic Separation. Journal of Mines, Metals and Fuels, 67(7), 377–384. Retrieved from https://informaticsjournals.com/index.php/jmmf/article/view/31587

Issue

Volume 67, Issue 7, July 2019

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

 

References

Carneiro J., Tobaldi D.M., Hajjaji W., Capela M.N., Novais R.M., Seabra M.P., Labrincha J.A. (2018): Red mud as a substitute coloring agent for the hematite pigment Ceramics International, 44(4): 4211-4219.

Wang Y.X., Zhang T.A., Lyu G.Z., Guo F.F., Zhang W.G., Zhang Y.H. (2018): Recovery of alkali and alumina from bauxite residue (red mud) and complete reuse of the treated residue Journal of Cleaner Production, 188: 456-465.

Liu Z.Y., Zhang S., Hu D., Zhang Y.S., Lv H.L., Liu C., Chen Y.D., Sun J. (2018): Paraffin/red mud phase change energy storage composite incorporated gypsum-based and cementbased materials: Microstructures, thermal and mechanical properties, Journal of Hazardous Materials, 364: 608-620.

Kim Youngjae, Lee Youngmin, Kim Minseuk, Park Hyunsik (2019): Preparation of high porosity bricks by utilizing red mud and mine tailing Journal of Cleaner Production, 207: 490-497.

Chen X., Guo Y.G., Ding S., Zhang H.Y., Xia F.Y., Wang J., Zhou M.K. (2019): Utilization of red mud in geopolymer-based pervious concrete with function of adsorption of heavy metal ions Journal of Cleaner Production, 207: 789-800.

Deihimi N., Irannajad M., Rezai B. (2018): Equilibrium and Kinetic studies of ferricyanide adsorption from aqueous solution by activated red mud Journal of Environmental Management, 227: 277-285.

Rubinos David A., Spagnoli Giovanni (2018): Assessment of red mud as sorptive landfill liner for the retention of arsenic (V), Journal of Environmental Management, 227: 277-285.

Weber J., Thompson A., Wilmoth J., Batra V.S., Janulaitis N., Kastner J.R. (2019): Effect of metal oxide redox state in red mud catalysts on ketonization of fast pyrolysis oil derived oxygenates Applied Catalysis B-Environmental, Volume, 241: 430-441..

Li Y.C., Min X.B., Ke Y., Liu D.G., Tang C.J. (2019,): Preparation of red mud-based geopolymer materials from MSWI fly ash and red mud by mechanical activation Waste management (New York, N.Y.), 83:202-208.

Yoon K., Jung J.M., Cho D.W., Tsang Daniel C W., Kwon Eilhann E., Song H. (2018): Engineered biochar composite fabricated from red mud and lipid waste and synthesis of biodiesel using the composite, Journal of Hazardous Materials, 366: 293-300.

Pomiro F.J., Fouga G.G., Bohe A.E. (2013): Kinetic Study of Europium Oxide Chlorination, Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science, 44(6):1509-1519.

Liu W.R., Li X.H., Hu Q.Y., Wang Z.X., Gu K.Z., Li J.H., Zhang L.X. ) 2010): Pretreatment study on chloridizing segregation and magnetic separation of low-grade nickel laterites Transactions of Nonferrous Metals Society of China, 20: S82-S86.

Mpinga C.N., Eksteen J., Aldrich C., Dyer L. (2017): Identification of the significant factors determining extractability of Ni and Cu after sulfating roasting of a PGM-bearing chromitite ore, Minerals Engineering, 110:153-165..

Yuan S., Yang H., Xue X.X., Zhou Y. (2017): Roasting decomposition of mixed rare earth tailings by CaO in reducing atmosphere, Rare Metals, 36(9): 764-768.

Zhong D.P., Li L., Tan C. (2018): Recovery of antimony from antimony-bearing dusts through reduction roasting process under CO-CO2 mixture gas atmosphere after firstly oxidation roasted, Journal of Central South University, 25(8): 1904-1913.

Orozco I. M., Bazan V. L., Diaz Diaz A.A., Lara F. (2016): Roasting of sulphide using carbothermal reduction DYNA, 83(198): 228-234.

Yu Y., Li L., Sang X.I. (2016): Removing Tin from Tin-bearing Iron Concentrates with Sulfidation Roasting Using High Sulfur Coal, ISIJ International, 56(1):57-62.

Guo H., Guo X.M. (2018): Mechanism of Low-Temperature Reduction Degradation of Alumina-Containing Hematite Solid Solution Below 550 degrees, C Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science, 49(6):3513-3521.

Meng Q.M., Li J.X., Wei R.F., Long H.M. (2018): Effects of gangue compositions on reduction process of carbonbearing iron ore pellets, Journal of Iron and Steel Research International, 25(11): 1105-1112.

Hamadeh H., Mirgaux O., Patisson F. (2018): Detailed Modeling of the Direct Reduction of Iron Ore in a Shaft Furnace, Materials, 11(10).

Jiang T., Liu M.D., Sun N., Li G.H. (2010): Al-Fe Separation from High Aluminium Content Limonite Ores by Salt-Added Reduction Roasting Process TMS 2010, 139th Annual Meeting & Exhibition - Supplemental Proceedings, Vol 1: Materials Processing And Properties, 419-427.

Bai S.J., Wen S.M., Liu D.W., Zhang W. B. (2012,): Carbothermic reduction of siderite ore with high phosphorus content reinforced by sodium carbonate, Canadian Metallurgical Quarterly, 51(4): 376-382.

Jiao R.M., Xing P., Wang C.Y., Ma B.Z. (2017,): Recovery of iron from copper tailings via low-temperature direct reduction and magnetic separation: process optimization and mineralogical study, International Journal of Minerals Metallurgy and Materials, 24(9): 974-982.

Li K.Q; Ping S., Wang H.Y., Ni W. (2013): Recovery of iron from copper slag by deep reduction and magnetic beneficiation, International Journal of Minerals Metallurgy and Materials, 20(11):1035-1041.

Chen D., Guo H.W., Xu J.F., Lv Y.A., Xu Z.M., Huo H.J.(2017): Recovery of Iron from Pyrite Cinder Containing Non-ferrous Metals Using High-Temperature Chloridizing-Reduction- Magnetic Separation, Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science, 48(2): 933-942.

Zhang K., Chen X.L., Guo W.C., Luo H.J., Gong Z.J, Li B.W., Wu W.F. (2017): Effects of biomass reducing agent on magnetic properties and phase transformation of Baotou low-grade limonite during magnetizing-roasting, PLOS ONE, 12(10).