Title : ( Recovery of iron from a high-sulfur and low-grade iron ore )
Authors: Jalil Vahdati Khaki , Hossein Shalchian , Ali Rafsanjani , Naghdali Alavi fard ,
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Abstract
The present study was carried out to recover iron from a low cost, low-grade and high-sulfur iron ore without sulfurous gas emission. This method is based on coal-based direct reduction followed by magnetic separation method. Thermodynamic of reaction was evaluated by FactSage at a constant pressure of 1 atmosphere. Furthermore, effects of temperature, residence time, coal/ore and lime/ore ratios on the reduction degree of the ore were also studied. The reduced ore was investigated by X-ray diffraction analysis and scanning electron microscopy. Analysis of the experimental data showed that a well-known three-dimensional diffusion model describes predominant mechanism of the reaction with activation energy of 159 kJ/mol. Finally, quantitative chemical analysis revealed that total iron content and metallization degree of the product are 80% and 93%, respectively. Recovery efficiency of the process was estimated 75%.
Keywords
, Keywords: High, sulfur iron ore Coal, based direct reduction Calcium oxide Thermodynamic Kinetics
@article{paperid:1068935,
author = {Vahdati Khaki, Jalil and Shalchian, Hossein and Rafsanjani, Ali and Alavi Fard, Naghdali},
title = {Recovery of iron from a high-sulfur and low-grade iron ore},
journal = {Thermochimica Acta},
year = {2018},
volume = {662},
number = {4},
month = {April},
issn = {0040-6031},
pages = {47--54},
numpages = {7},
keywords = {Keywords:
High-sulfur iron ore
Coal-based direct reduction
Calcium oxide
Thermodynamic
Kinetics},
}
%0 Journal Article
%T Recovery of iron from a high-sulfur and low-grade iron ore
%A Vahdati Khaki, Jalil
%A Shalchian, Hossein
%A Rafsanjani, Ali
%A Alavi Fard, Naghdali
%J Thermochimica Acta
%@ 0040-6031
%D 2018
