Preparation of ferrotitanium alloy by aluminothermic reduction of perovskite

被引：0

作者：

You, Jing ^{[1
]}

Yang, Jinzhong ^{[2
]}

Dong, Wenxiong ^{[2
]}

Wang, Yaowu ^{[2
]}

Wang, Yu ^{[3
]}

机构：

[1] Shenyang Ligong Univ, Mat Sci & Engn, Shenyang 110159, Peoples R China

[2] Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China

[3] Natl Key Lab Adv Casting Technol, Shenyang 110022, Peoples R China

来源：

PROCESS SAFETY AND ENVIRONMENTAL PROTECTION | 2024年 / 187卷

关键词：

Ferrotitanium; Aluminothermic reduction; Perovskite; Slag -alloy separation; BLAST-FURNACE SLAG; TI-FE ALLOYS; ELECTROCHEMICAL REDUCTION; ILMENITE; PHASE;

D O I：

10.1016/j.psep.2024.04.102

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Titanium-bearing blast-furnace slag is an important secondary resource. Artificial perovskite, with CaTiO3 as the main crystal phase, can be obtained after settling of the slag. Preparation of ferrotitanium alloy using perovskite as the titanium-containing material and aluminum as the reducing agent was studied. X-ray diffraction, scanning electron microscopy with energy-dispersive spectroscopy, and elemental chemical analysis were used to determine the composition and microstructure of the products. The results show that FeTi50 alloy can be prepared by aluminothermic reduction of perovskite. Reduction temperature has a strong influence on the separation of alloy and slag: when the reduction temperature increased from 1500 degrees C to 1600 degrees C, the ferrotitanium alloy and slag effectively separated and Ti recovery exceeded 80%. The Al and O contents in the alloy decreased with decreasing aluminum addition, but also reduced Ti recovery. An alloy conforming to the industrial standard for FeTi50-A was obtained when the aluminum addition was 90 mass% of the stoichiometric value regarding reduction of perovskite.

引用

页码：305 / 311

页数：7

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