scholarly journals Effects of Dolomite on Mineral Compositions and Metallurgical Properties of Chromium-Bearing Vanadium–Titanium Magnetite Sinter

Minerals ◽  
2017 ◽  
Vol 7 (11) ◽  
pp. 210 ◽  
Author(s):  
Songtao Yang ◽  
Weidong Tang ◽  
Mi Zhou ◽  
Tao Jiang ◽  
Xiangxin Xue ◽  
...  
Keyword(s):  
Metallurgical Properties ◽  
Mineral Compositions ◽  
Vanadium Titanium ◽  
Titanium Magnetite

scholarly journals Experimental Study of the Effect of B2O3 on Vanadium-Titanium Magnetite Concentrates Pellets

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Hao Liu ◽  
Ke Zhang ◽  
Henrik Saxén ◽  
Weiqiang Liu ◽  
Yuelin Qin ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Experimental Study ◽  
Compressive Strength ◽  
High Temperature ◽  
Area Ratio ◽  
Reduction Degree ◽  
Metallurgical Properties ◽  
Vanadium Titanium ◽  
Titanium Magnetite ◽  
Compaction Degree

This paper aims to improve the metallurgical properties of vanadium-titanium magnetite (VTM) concentrates pellets by applying solid waste containing B2O3. Thus, the effects of adding B2O3 on the drop strength, compressive strength, pores area ratio, high-temperature metallurgical properties, and microstructure of VTM pellets were studied through pelletizing and roasting experiments. Results show that the addition of B2O3 reagent is not conducive to the increase of the drop strength of the green pellets. Nevertheless, the compressive strength and fracture toughness of the roasted pellets can be improved by adding more B2O3 during the pelletizing. The reduction degree of VTM pellets is firstly decreased and then increased with the added B2O3 amount. It is possible to improve the compaction degree and restrain the reduction-pulverization degree of the pellet by a low amount of additive (B2O3). The reduction-expansion performance of VTM pellets, in turn, can be raised by adding B2O3.

Reduction behavior of vanadium-titanium magnetite carbon composite hot briquette in blast furnace process

2019 ◽  
Vol 342 ◽  
pp. 214-223 ◽  
Author(s):  
Wei Zhao ◽  
Mansheng Chu ◽  
Hongtao Wang ◽  
Zhenggen Liu ◽  
Jue Tang ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Carbon Composite ◽  
Blast Furnace Process ◽  
Reduction Behavior ◽  
Furnace Process ◽  
Vanadium Titanium ◽  
Titanium Magnetite

Effect of MgO addition on the metallurgical properties of the vanadium-titanium pellet with simulating blast furnace conditions

2018 ◽  
Vol 47 (4) ◽  
pp. 388-397 ◽  
Author(s):  
Wei Zhao ◽  
Mansheng Chu ◽  
Cong Feng ◽  
Hongtao Wang ◽  
Zhenggen Liu ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Metallurgical Properties ◽  
Vanadium Titanium

scholarly journals Coal-Based Reduction and Magnetic Separation Behavior of Low-Grade Vanadium-Titanium Magnetite Pellets

Minerals ◽  
2017 ◽  
Vol 7 (6) ◽  
pp. 86 ◽  
Author(s):  
Gongjin Cheng ◽  
Zixian Gao ◽  
Mengyang Lv ◽  
He Yang ◽  
Xiangxin Xue
Keyword(s):  
Magnetic Separation ◽  
Low Grade ◽  
Magnetite Pellets ◽  
Vanadium Titanium ◽  
Separation Behavior ◽  
Titanium Magnetite

Phases Transition and Consolidation Mechanism of High Chromium Vanadium-Titanium Magnetite Pellet by Oxidation Process

2016 ◽  
Vol 35 (7) ◽  
pp. 729-738
Author(s):  
Jue Tang ◽  
Man-sheng Chu ◽  
Cong Feng ◽  
Feng Li ◽  
Zheng-gen Liu
Keyword(s):  
Phase Transition ◽  
Oxidation Process ◽  
Consolidation Process ◽  
High Chromium ◽  
Oxidized Pellet ◽  
Three Stages ◽  
Roasting Temperature ◽  
Vanadium Titanium ◽  
Roasting Time ◽  
Titanium Magnetite

AbstractBased on the fundamental characteristics of high chromium vanadium-titanium magnetite (HCVTM), the effects of roasting temperature and roasting time on the phase transition and oxidation consolidation during the oxidation were investigated systematically. It was shown that the oxidation of HCVTM pellet was not a simple process but complex. With increasing roasting temperature and time, the compressive strength of oxidized pellet was improved. The phase transition during oxidation was hypothesized to proceed as follows: (1) Fe3O4 → Fe2O3; (2) Fe2.75Ti0.25O4 → Fe9TiO15 + FeTiO3 → Fe9TiO15 + Fe2Ti3O9; (3) Fe2VO4 → V2O3 → (Cr0.15V0.85)2O3; (4) FeCr2O4 → Cr2O3 → Cr1.3Fe0.7O3 + (Cr0.15V0.85)2O3. The oxidation consolidation process was divided into three stages: (1)oxidation below 1,173 K; (2) recrystallization consolidation at 1,173 – 1,373 K; (3) particle refining recrystallization-consolidation by the participation of liquid phase at 1,373 – 1,573 K. To obtain the HCVTM oxidized pellet with good quality, the rational roasting parameters included a roasting temperature of 1,573 K and a roasting time of 20 min.

Sign in / Sign up

Export Citation Format

Share Document