Next Article in Journal
Swell–Shrink Behavior of Rubberized Expansive Clays during Alternate Wetting and Drying
Next Article in Special Issue
Optimizing Conditions for Scandium Extraction from Bauxite Residue Using Taguchi Methodology
Previous Article in Journal
Estimating Bubble Loading in Industrial Flotation Cells
Previous Article in Special Issue
Increased As Adsorption on Maghemite-Containing Red Mud Prepared by the Alkali Fusion-Leaching Method
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessArticle

Semi-Smelting Reduction and Magnetic Separation for the Recovery of Iron and Alumina Slag from Iron Rich Bauxite

1
School of Metallurgical Engineering, Anhui University of Technology, Maanshan 243002, China
2
College of Material Science and Engineering, Chongqing University, Chongqing 400030, China
3
School of Metallurgy, Northeastern University, Shenyang 110819, China
4
State Key Laboratory of Advance Steel Processes and Products, Central Iron and Steel Research Institute, Beijing 100081, China
*
Authors to whom correspondence should be addressed.
Minerals 2019, 9(4), 223; https://doi.org/10.3390/min9040223
Received: 7 March 2019 / Revised: 30 March 2019 / Accepted: 4 April 2019 / Published: 9 April 2019
  |  
PDF [8152 KB, uploaded 12 April 2019]
  |  

Abstract

This work presents a semi-smelting reduction and magnetic separation process for the recovery of iron and alumina slag from iron rich bauxite ore. The effect of the process parameters on the recovery rate of iron, maximum particle size of the iron nugget, and the Al2O3 content of the alumina slag was investigated and optimized. The results show that the iron nuggets and alumina slag can be obtained in a short time through a semi-smelting reduction and magnetic separation process. The maximum particle size of iron nugget is about 15 mm, and the recovery rate of the iron and Al2O3 grade of the alumina slag are 96.84 wt % and 43.98 wt %, respectively. The alumina slag consisted mainly of alumina (α-Al2O3), calcium hexaluminate (CaAl12O19), gehlenite (Ca2Al2SiO7), and small amounts of hercynite (FeAl4O7), and metallic iron (M.Fe). View Full-Text
Keywords: iron rich bauxite; reduction and smelting; iron nuggets; alumina slag; recovery rate iron rich bauxite; reduction and smelting; iron nuggets; alumina slag; recovery rate
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Zhang, Y.; Gao, Q.; Zhao, J.; Li, M.; Qi, Y. Semi-Smelting Reduction and Magnetic Separation for the Recovery of Iron and Alumina Slag from Iron Rich Bauxite. Minerals 2019, 9, 223.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Minerals EISSN 2075-163X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top