Recovery Process of Iron from High-Iron Red Mud Through Suspension Magnetization Roasting-Low Intensity Magnetic Separation Technology

doi:10.12068/j.issn.1005-3026.2021.03.017

Journal of Northeastern University(Natural Science) ›› 2021, Vol. 42 ›› Issue (3): 414-421.DOI: 10.12068/j.issn.1005-3026.2021.03.017

• Resources & Civil Engineering • Previous Articles Next Articles

Recovery Process of Iron from High-Iron Red Mud Through Suspension Magnetization Roasting-Low Intensity Magnetic Separation Technology

LIU Xiao^1,2， GAO Peng^1,2,3， LYU Yang ⁴， YUAN Shuai^1,2

1. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China; 2. National-Local Joint Engineering Research Center of High-Efficient Exploitation Technology for Refractory Iron Ore Resources， Northeastern University， Shenyang 110819， China; 3. State Key Laboratory of Rolling and Automation， Northeastern University， Shenyang 110819， China; 4. BERIS Engineering and Research Corporation， Qingdao 266500， China.

Received:2020-07-28 Revised:2020-07-28 Accepted:2020-07-28 Published:2021-03-12
Contact: LIU Xiao
About author:-
Supported by:
-

Abstract

Abstract: High-iron red mud contains a lot of iron， which is a potential iron ore resource. Therefore， it is of great significance to develop innovative processes and technologies to realize the recycling of iron in red mud， and at the same time to achieve red mud reduction. A novel process of suspension magnetization roasting-low intensity magnetic separation was developed for the Bayer high-iron red mud. The effects of roasting temperature， roasting time， reducing gas CO concentration and total gas volume on the magnetization roasting effect were studied. The experiment results show that the desired indexes with iron grade of 56.40% and recovery of 88.46% were obtained from the roasted ore after the low intensity magnetic separation under the optimal roasting conditions. The results of XRD analysis， chemical phase analysis of iron， SEM-EDS analysis and VSM analysis indicate that hematite phase present in the raw material was transformed into magnetite phase during the suspension magnetization roasting process.

Key words: high-iron red mud; suspension magnetization roasting; iron ore concentrates;hematite; magnetite

CLC Number:

TD951

LIU Xiao ， GAO Peng ， LYU Yang ， YUAN Shuai. Recovery Process of Iron from High-Iron Red Mud Through Suspension Magnetization Roasting-Low Intensity Magnetic Separation Technology[J]. Journal of Northeastern University(Natural Science), 2021, 42(3): 414-421.

References

[1]Wang Y X，Zhang T A，Lu 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.
[2]Archambo M，Kawatra S K.Red mud:fundamentals and new avenues for utilization ［J］.Mineral Processing and Extractive Metallurgy Review， 2020(2):1-24.
[3]Yuan S，Liu X，Gao P，et al.A semi-industrial experiment of suspension magnetization roasting technology for separation of iron minerals from red mud ［J］.Journal of Hazardous Material，2020，394:122579.
[4]Lu G Z，Zhang T A，Ma L N，et al.Utilization of Bayer red mud by a calcification-carbonation method using calcium aluminate hydrate as a calcium source ［J］.Hydrometallurgy，2019，188:248-255.
[5]刘少名.赤泥的综合利用［D］.沈阳:东北大学，2011.(Liu Shao-ming.Comprehensive utilization of red mud ［D］.Shenyang:Northeastern University，2011.)
[6]Agrawal S，Rayapudi V，Dhawan N.Comparison of microwave and conventional carbothermal reduction of red mud for recovery of iron values ［J］.Minerals Engineering，2019，132:202-210.
[7]Li P F，Liu Z W，Yan H W，et al.Recover iron from bauxite residue (red mud) ［J］. IOP Conference Series:Earth and Environmental Science，2019，252:37-42.
[8]Xie W M，Zhou F P，Liu J Y，et al.Synergistic reutilization of red mud and spent pot lining for recovering valuable components and stabilizing harmful element ［J］.Journal of Cleaner Production，2020，243:118624.
[9]Mombelli D，Barella S，Gruttadauria A，et al.Iron recovery from bauxite tailings red mud by thermal reduction with blast furnace sludge ［J］.Applied Sciences，2019，9(22):4902.
[10]Kaussen F，Friedrich B.Reductive smelting of red mud for iron recovery ［J］.Chemie Ingenieur Technik，2015，87(11):1535-1542.
[11]李朝祥.从平果铝赤泥中回收铁半工业性试验取得成功［J］.矿冶工程，2000(1):58.(Li Zhao-xiang.The semi-industrial test of recovering iron from Pingguo aluminium red mud has been successful ［J］.Mining and Metallurgical Engineering，2000(1):58.)
[12]Zhu D Q，Chun T J，Pan J，et al.Recovery of iron from high-iron red mud by reduction roasting with adding sodium salt ［J］.Journal of Iron and Steel Research International，2012，19(8):1-5.
[13]梅贤功，袁明亮，陈荩.高铁拜耳法赤泥煤基直接还原工艺的研究［J］.有色金属(冶炼部分)，1996(2):27-30.(Mei Xian-gong，Yuan Ming-liang，Chen Jin.Study on direct reduction technology of high-speed Bayer process red peat-based coal ［J］.Nonferrous Metals (Extractive Metallurgy)，1996(2):27-30.)
[14]Mishra B，Staley A，Kirkpatrick D.Recovery of value-added product from red mud ［J］.Minerals and Metallurgical Processing，2002，19:87-92.
[15]高建军，齐渊洪，居殿春，等.从赤泥中联合提取铁和氧化铝试验［J］.钢铁，2015(9):11-16.(Gao Jian-jun，Qi Yuan-hong，Ju Dian-chun，et al.Experiment on the combined extraction of iron and alumina from red mud ［J］.Iron & Steel，2015(9):11-16.)
[16]高鹏，余建文，张淑敏，等.东鞍山铁矿混磁精矿悬浮焙烧—弱磁选试验研究［J］.金属矿山，2016(12):18-21.(Gao Peng，Yu Jian-wen，Zhang Shu-min，et al.Experimental study on suspension roasting-low intensity magnetic separation of magnetic mixed concentrate from Donganshan ［J］. Metal Mine，2016(12):18-21.)
[17]Yu J W，Han Y X，Li Y J，et al.Beneficiation of an iron ore fines by magnetization roasting and magnetic separation ［J］.International Journal of Mineral Processing，2017，168:102-106.
[18]Li Y，Zhu T.Recovery of low grade hematite via fluidised bed magnetizing roasting:investigation of magnetic properties and liberation characteristics［J］.Ironmaking & Steelmaking，2012，39:112-117.
[19]Agrawal S，Rayapudi V，Dhawan N.Extraction of iron values from red mud ［J］.Materials Today:Proceedings，2018，5(9):17064-17072.
[20]Cui Z，Liu Q，Etsell T H.Magnetic properties of ilmenite，hematite and oilsand minerals after roasting ［J］.Minerals Engineering，2002，15(12):1121-1129.
[21]Yuan S，Zhou W T，Han Y X，et al.Efficient enrichment of low-grade refractory rhodochrosite by preconcentration-neutral suspension roasting-magnetic separation process ［J］.Powder Technology，2020，361:529-539.
[22]柳晓，高鹏，韩跃新，等.山东某高铁赤泥工艺矿物学研究［J］.东北大学学报(自然科学版)，2019，40(11):1611-1616.(Liu Xiao，Gao Peng，Han Yue-xin，et al.Study on process mineralogy of a high-iron red mud from Shandong Province ［J］.Journal of Northeastern University (Natural Science)，2019，40(11):1611-1616.)(上接第407页)

Recovery Process of Iron from High-Iron Red Mud Through Suspension Magnetization Roasting-Low Intensity Magnetic Separation Technology

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 10

Recommended Articles

Metrics

Comments

[1]	ZHOU Peng-fei， ZHANG Wei， ZHAO Si-kai， SHEN Yan-bai. Growth Mechanism of α-Fe₂O₃Nanopolyhedra Synthesized from Pyrite by Cu²⁺Inducement [J]. Journal of Northeastern University Natural Science, 2020, 41(3): 408-412.
[2]	YU Hong-dong， WANG Li-na， QU Jing-kui， QI Tao. Process Mineralogical Characteristics and Ore Value of Typical Vanadium Titanium Magnetite in China [J]. Journal of Northeastern University Natural Science, 2020, 41(2): 275-281.
[3]	LIU Xiao， GAO Peng， HAN Yue-xin， YING Ping. Study on Process Mineralogy of a High-Iron Red Mud from Shandong Province [J]. Journal of Northeastern University Natural Science, 2019, 40(11): 1611-1616.
[4]	YU Jian-wen， HAN Yue-xin， LI Yan-jun， GAO Peng. Pre-enrichment Behaviors of Low-Grade Donganshan Iron Ore Using Magnetic Separation [J]. Journal of Northeastern University Natural Science, 2019, 40(1): 94-98.
[5]	SUN Yong-sheng， CAO Yue， HAN Yue-xin， LI Yan-jun. Oxidation Kinetics of Magnetite During the Cooling Process of Magnetization Roasting [J]. Journal of Northeastern University Natural Science, 2018, 39(12): 1759-1763.
[6]	TANG Zhi-dong， LI Wen-bo， GAO Peng， HAN Yue-xin. Mineralogical Study of Vanadium Titanium Magnetite Ore in Chaoyang [J]. Journal of Northeastern University Natural Science, 2017, 38(12): 1769-1774.
[7]	YUAN Shuai， LIU Jie， LI Yan-jun， WANG Yue. Process Mineralogy of Sishanling Iron Ore in Benxi， Liaoning Province [J]. Journal of Northeastern University Natural Science, 2016, 37(10): 1455-1459.
[8]	CAO Yunye， SUN Tichang， GAO Enxia， XU Chengyan. Effects of Volatile Component in Coal on HighPhosphorus Oolitic Hematite in Direct Reduction Roasting Process [J]. Journal of Northeastern University Natural Science, 2014, 35(9): 1346-1349.
[9]	XU Yan， SUN Tichang， LIU Zhiguo， XU Chengyan. Dephosphorization Effect of Sodium Carbonate in the Process of Direct Reduction Roasting of High Phosphorous Oolitic Hematite [J]. Journal of Northeastern University Natural Science, 2014, 35(7): 1028-1032.
[10]	XU Yan， SUN Tichang， LIU Zhiguo， XU Chengyan. Phosphorus Occurrence State and Phosphorus Removal Research of a High Phosphorous Oolitic Hematite by Direct Reduction Roasting Method [J]. Journal of Northeastern University(Natural Science), 2013, 34(11): 1651-1655.