Phase Development in the Sintering of a Hematite-Ilmenite Ore Blend

被引：6
|
作者：
Chiwandika, Edson K. [1 ]
Cho, Seong-Kyu [1 ]
Jung, Sung-Mo [1 ]
机构：
[1] POSTECH, Grad Inst Ferrous Technol, Pohang 37673, South Korea
来源：
MINERALS | 2020年 / 10卷 / 09期
关键词：
sintering; phase development; element distribution; melt formation; perovskite; SILICO-FERRITE; ALUMINUM SFCA; CALCIUM; IRONSAND; BEHAVIOR; VANADIUM;
D O I：
10.3390/min10090800
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
The use of low-grade iron ores has attracted a lot of interest where fines from these ores are sintered to improve their strength. Ti-containing ores are one of the abundantly available iron ores of low-grade. The sintering of the hematite-ilmenite ore blends has several challenges, which include the formation of perovskite. The sintering behavior of a hematite-ilmenite ore sinter blend was investigated in 75 vol% N-2, 24 vol% CO2, and 1 vol% CO in the temperature range of 1373 to 1523 K. Phase development and distribution of metallic elements were investigated by x-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), and electron probe microanalysis (EPMA). The addition of ilmenite ore to hematite ore increased the temperature of melt formation. More titanium (Ti) was distributed in the glass phase with increasing temperature. Morphological change showed that the amount of sinter-bonding phase generated was low, below 1473 K. Weak sinter bonding strength might be caused by the presence of Ti in the glass phase at high temperature. This might affect the fracture toughness of the glass phase.
引用
收藏
页码：1 / 13
页数：13
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