Research on Magnesioferrite Growth in the Mixed Melting System of Low-Iron Red Mud

doi:10.12068/j.issn.1005-3026.2023.06.012

Abstract

Abstract: The SiO₂-Al₂O₃-CaO-MgO-Fe₂O₃ multi-mixed melting system was constructed using low-iron red mud， and the magnesioferrite crystalline glaze was prepared by a high-temperature phase reconstruction method. The crystal growth behavior of magnesioferrite at different temperatures was observed through X-ray diffraction and field emission scanning electron microscope. The results show that the increase of sintering temperature is helpful to the growth of magnesioferrite crystal， which has an autogenous-semi-autogenous granular structure.The sample has the best resistance against acid and alkali after 96h with a mass-loss rate less than 0.1% under a sintering temperature of 1270℃. In addition， its wear rate is 1.4×10^-5mm³/(N·m)， and its Vickers hardness is 8.68GPa， which meets the performance requirements of daily ceramic glazes.

Key words: low-iron red mud; phase reconstruction; magnesioferrite; crystal growth

CLC Number:

TQ174.4

HUANG Fei， WANG Xin-yu， WEN Xin-yu， CHANG Zhuo-ya. Research on Magnesioferrite Growth in the Mixed Melting System of Low-Iron Red Mud[J]. Journal of Northeastern University(Natural Science), 2023, 44(6): 849-856.

References

[1]柳晓，韩跃新，李艳军，等.山东某赤泥磁化焙烧-磁选提铁初探［J］.金属矿山，2019，512(2):60-65.(Liu Xiao，Han Yue-xin，Li Yan-jun，et al.Primary study on magnetizing roasting-magnetic separation of red mud in Shandong［J］.Metal Mine，2019，512(2):60-65.)
[2]Alam S，Das S K，Rao B H.Characterization of coarse fraction of red mud as a civil engineering construction material［J］.Journal of Cleaner Production，2017，168:679-691.
[3]Liu X，Han Y，He F，et al.Characteristic，hazard and iron recovery technology of red mud:a critical review［J］.Journal of Hazardous Materials，2021，420:126542.
[4]Wang Y X，Zhang T A，Lyu G Z，et al.Recovery of alkali and alumina from bauxite residue(red mud) and complete reuse of the treated residue［J］.Journal of Cleaner Production，2018，188:456-465.
[5]Wang W，Chen W J，Liu H T，et al.Recycling of waste red mud for production of ceramic floor tile with high strength and light weight［J］.Journal of Alloys and Compounds，2018，748:876-881.
[6]Liu S H，Guan X，Zhang S，et al.Sintered bayer red mud based ceramic bricks:microstructure evolution and alkalis immobilization mechanism［J］.Ceramics International，2017，43(15):13004-13008.
[7]Molla A R，Kesavulu C R，Chakradhar R P S，et al.Microstructure，mechanical，thermal，EPR，and optical properties of MgAl₂O₄:Cr³⁺ spinel glass-ceramic nanocomposites［J］.Journal of Alloys and Compounds，2014，583:498-509.
[8]Mazza D，Delmastro A，Ronchetti S.Co，Ni，Cu aluminates supported on mullite precursors via a solid state reaction［J］.Journal of the European Ceramic Society，2000，20(6):699-706.
[9]Pramanik N C，Fujii T，Nakanishi M，et al.Preparation and magnetic properties of the CoFe₂O₄ thin films on Si substrate by sol-gel technique［J］.Journal of Materials Science，2005，40(16):4169-4172.
[10]Chen Z Z，Shi E W，Li W J，et al.Hydrothermal synthesis and optical property of nano-sized CoAl₂O₄ pigment［J］.Materials Letters，2002，55(5):281-284.
[11]Cui K K，Wu Z J，Huang W，et al.Recycle of valuable metals in converter steel slag for preparing multidoped M_○xMg_1-○x○Fe₂O₄(M=Mn，Ca) spinel［J］.ACS Sustainable Chemistry & Engineering，2013，2(3):344-347.
[12]Xue P，He D F，Xu A J，et al.Modification of industrial BOF slag:formation of MgFe₂O₄ and recycling of iron［J］.Journal of Alloys and Compounds，2017，712:640-648.
[13]闻昕宇，黄菲，张志彬，等.金厂峪蚀变岩制备矿物釉的微观特征研究［J］.陶瓷学报.2019，40(6):776-781.(Wen Xin-yu，Huang Fei，Zhang Zhi-bin，et al.Study on the microscopic characteristics of mineral glazes prepared from alterated rocks［J］.Journal of Ceramics，2019，40(6):776-781.)
[14]Yaln N，Sevin V.Utilization of bauxite waste in ceramic glazes［J］.Ceramics International，2000，26(5):485-493.
[15]Xuan W W，Wang Q，Zhang J S，et al.Influence of silica and alumina(SiO₂+Al₂O₃) on crystallization characteristics of synthetic coal slags［J］.Fuel，2017，189:39-45.
[16]Liu X，Gao P，Yuan S，et al.Clean utilization of high-iron red mud by suspension magnetization roasting［J］.Minerals Engineering，2020，157:106553
[17]Da Silva R C，Pianaro S A，Tebcherani S M.Preparation and characterization of glazes from combinations of different industrial wastes［J］.Ceramics International，2012，38(4):2725-2731.
[18]Johnson N M，Fegley B.Water on venus:new insights from tremolite decomposition［J］.Icarus，2000，146(1):301-306.
[19]Li Y L，Huang F，Gao W Y，et al.Raman spectroscopy and XPS study of the thermal decomposition of Mg-hornblende into augite［J］.Journal of Raman Spectroscopy，2022，53(4):820-831.
[20]李桂娟，李淑静，李远兵.锯末粒度对镁橄榄石-SiO₂多孔陶粒性能的影响［J］.耐火材料，2017，51(2):112-117.(Li Gui-juan，Li Shu-jing，Li Yuan-bing.Effects of sawdust particle size on properties of forsterite-SiO₂ porous ceramisites［J］.Refractories，2017，51(2):112-117.)