Viscosity Property and Structure Analysis of FeO–SiO&lt;sub&gt;2&lt;/sub&gt;–V&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;–TiO&lt;sub&gt;2&lt;/sub&gt;–Cr&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; Slags

Huang, Weijun; Zhao, Yuehao; Yu, Shan; Zhang, Lingxi; Ye, Zhen-chuan; Wang, Nan; Chen, Min

doi:10.2355/isijinternational.isijint-2015-457

Cited by 61 publications

(32 citation statements)

References 32 publications

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“…7,23) This is primarily due to the fact that Cr 2 O 3 has a low solubility in silicate slags, and is easily combined with divalent metal oxides to form high melting point spinels such as FeO‧Cr 2 O 3 or MgO‧Cr 2 O 3 suspended in the slag 1,2,4) and can also form Cr-O-Cr network structures embedded in Si-O-Si structures. [4][5][6] A large number of Cr-containing phases often leads to a sharp increase in Cr-containing slag viscosity or even slag hardening, which is disadvantageous for chromium recovery. The formation of divalent chromium therefore benefits for the reduction of slag viscosity.…”

Section: Dop Variation Of Slagsmentioning

confidence: 99%

“…Good fluidity of a Cr-containing slag is critical to the smelting and refining of such materials. Previous studies [1][2][3][4][5][6][7][8][9] have been performed regarding the viscosity of Cr 2 O 3 -containing slags, demonstrating that an increase in Cr 2 O 3 content leads to an increase in slag viscosity. However, Cr tends to exist primarily as Cr 2 + in molten slag, particularly when equilibrating with metal melts under higher temperatures.…”

Section: Introductionmentioning

confidence: 99%

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Viscosity Measurements of CaO–SiO2–CrO Slag

Yuan

Zhang

2018

ISIJ Int.

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The viscosities of CrO-containing slags obtained using high temperature equilibrium technique were measured by the rotating cylinder method at 1 823 to 1 948 K (1 550 to 1 675°C). The slag viscosity decreased with increasing CrO contents. CrO also exhibits a strong basic character in slags, and can act as a network modifier to depolymerize the slag network structure in CaO-SiO 2 -based slags. The dependence of the slag degree of polymerization (DOP) on the CrO content further validates these observations.

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Section: Dop Variation Of Slagsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Viscosity Measurements of CaO–SiO2–CrO Slag

Yuan

Zhang

2018

ISIJ Int.

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“…[1][2][3] The Hongge mineral in Panzhihua-Xichang area is the largest VTM resource of China. 4) Hongge vanadium titanomagnetite (HVTM) is an iron ore that not only containing iron, titanium, and vanadium, but also relatively rich in chromium.…”

Section: Introductionmentioning

confidence: 99%

Non-isothermal Reduction Behavior and Mechanism of Hongge Vanadium Titanomagnetite Pellet with Simulated Shaft Furnace Gases

Chu

et al. 2018

ISIJ Int.

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“…The chromium reserve is 900 Mt, accounting for approximately 68% of Chinese total chromium reserve. 4,5) Therefore, the utilization of this complex iron ore is imperative.…”

Section: Introductionmentioning

confidence: 99%

Influence of Cr2O3 Addition on the Gas-Based Direct Reduction Behavior of Hongge Vanadium Titanomagnetite Pellet with Simulated Shaft Furnace Gases

Chu

et al. 2018

ISIJ Int.

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This paper investigated the influence of Cr 2 O 3 addition on the gas-based direct reduction behavior of Hongge vanadium titanomagnetite pellet (HVTMP) with simulated shaft furnace gases. The reduction curves obtained indicated that the Cr 2 O 3 addition revealed different effects on the reduction of HVTMP and the reduction process could be divided into three stages. X-ray diffraction showed that FeCr 2 O 4 was formed by adding Cr 2 O 3 , which was hard to be reduced and had an adverse effect on the metallization degree of final reduced HVTMP. The morphology analysis revealed that the connected metallic iron particles were destroyed and their growth and connection were prevented during the reduction when Cr 2 O 3 was added. With the increase of Cr 2 O 3 addition, the growth of metallic iron whiskers was changed form close cluster to disperse location, and the number of metallic iron whiskers increased, which determined the extent of reduction swelling. In addition, the reduction swelling had relationship with the compressive strength of reduced HVTMP with different Cr 2 O 3 additions. This study will not only establish a relationship between the Cr 2 O 3 addition of HVTMP and its gas-based direct reduction behavior, but also contribute greatly to the effective utilization of HVTM in shaft furnace.

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Viscosity Property and Structure Analysis of FeO–SiO<sub>2</sub>–V<sub>2</sub>O<sub>3</sub>–TiO<sub>2</sub>–Cr<sub>2</sub>O<sub>3</sub> Slags

Cited by 61 publications

References 32 publications

Viscosity Measurements of CaO–SiO<sub>2</sub>–CrO Slag

Viscosity Measurements of CaO–SiO<sub>2</sub>–CrO Slag

Non-isothermal Reduction Behavior and Mechanism of Hongge Vanadium Titanomagnetite Pellet with Simulated Shaft Furnace Gases

Influence of Cr<sub>2</sub>O<sub>3</sub> Addition on the Gas-Based Direct Reduction Behavior of Hongge Vanadium Titanomagnetite Pellet with Simulated Shaft Furnace Gases

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