Preparation of Fe-Mn-W-Sn alloy from alkali-boiled black-and-white tungsten slag and red mud by synergistic carbothermic reduction and recovery

HUO Ruihao; XIE Sui; DENG Pan; ZENG Zhiyong; LIAO Chunfa; WANG Xu

doi:10.13264/j.cnki.ysjskx.2023.03.001

Volume 14 Issue 3

Jun. 2023

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Nonferrous Metals Science and Engineering > 2023 > 14(3): 295-301. > DOI: 10.13264/j.cnki.ysjskx.2023.03.001

HUO Ruihao, XIE Sui, DENG Pan, ZENG Zhiyong, LIAO Chunfa, WANG Xu. Preparation of Fe-Mn-W-Sn alloy from alkali-boiled black-and-white tungsten slag and red mud by synergistic carbothermic reduction and recovery[J]. Nonferrous Metals Science and Engineering, 2023, 14(3): 295-301. DOI: 10.13264/j.cnki.ysjskx.2023.03.001

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Preparation of Fe-Mn-W-Sn alloy from alkali-boiled black-and-white tungsten slag and red mud by synergistic carbothermic reduction and recovery

Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China

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Received Date: May 23, 2022
Revised Date: August 18, 2022
Available Online: June 30, 2023

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Abstract

Based on the fact that red mud contains valuable elements such as flux and iron required for carbon-thermal reduction of alkali boiled black and white tungsten slag, Fe-Mn-W-Sn alloy was prepared by synergistic carbon-thermal reduction recovery of alkali-boiled black and white tungsten slag and red mud, and harmful elements such as arsenic, lead and bismuth were separated. By investigating the effects of different alkali-boiled black-and-white tungsten slag to red mud ratios, amount of reducing agent, reduction temperature and melting time on metal alloying rate, the best co-disposal carbon thermal reduction process conditions are determined that the mass ratio of alkali-boiled black-and-white tungsten slag and red mud is 1∶1, with the reducing agent amount of 8%, melting temperature of 1 550 ℃ and melting time of 120 min. Under these conditions, the alloying rates of iron, manganese, niobium, tin, tungsten and tantalum are 99.40%, 23.75%, 25.08%, 89.46%, 40.94% and 17.53%, respectively. Arsenic, lead, bismuth and other harmful elements are reduced into soot. Research on the cooperative disposal of carbon thermal reduction between alkali-boiled black-and-white tungsten slag and red mud can not only recover valuable metals but also reduce additional resource like flux, which provides a good idea for the development of resource utilization.
- alkali-boiled black-and-white tungsten slag,
- red mud,
- coordination,
- carbothermal reduction,
- Fe-Mn-W-Sn alloy

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Preparation of Fe-Mn-W-Sn alloy from alkali-boiled black-and-white tungsten slag and red mud by synergistic carbothermic reduction and recovery

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