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Phase transformation and slag evolution of vanadium–titanium …

High-chromium vanadium-titanium magnetite (HVTM) is a critical polymetallic ore resource, and its large-scale utilization is considered feasible by smelting flux pellets in blast furnaces.

Optimization of Basicity of High Ti Slag for Efficient Smelting …

Slag basicity (mass ratio of CaO to SiO 2) is an important index to ensure smooth operation and efficient separation between the metal and slag within the metallurgical industry.Effects of basicity of the high titanium slag on the recovery of iron and vanadium, the separation behaviors between iron and slag, as well as the slag ing …

Behavior of vanadium during reduction and smelting of …

Abstract. The effects of CaO content, MgO content and smelting temperature on the vanadium behavior during the smelting of vanadium titanomagnetite metallized …

Smelting Reduction Characteristics and Mechanism of Vanadium–Titanium …

The results showed that the reasonable smelting parameters for vanadium–titanium magnetite smelting of the process introduced in the paper were above 1450 °C of smelting temperature, above 0.8 of basicity of slag, 30–40 min of smelting time and 20–22% of coal addition. Nevertheless, the sulfur content of the iron particle was …

Effect of Cr2O3 on the Reduction and Smelting Mechanism …

Extracted-vanadium residue (EVR), formed during the smelting and extraction of High-chromium vanadium-titanium magnetite (HCVTM), should be used cyclically, and its use as a sintering material to ...

High-Efficiency Smelting Separation of Vanadium–Titanium …

Efficient utilization of vanadium–titanium magnetite can be achieved by high-temperature pyrometallurgical smelting separation of the material. The fusibility of vanadium–titanium magnetite during reduction and smelting reflects the difficulty of smelting separation.

Metals | Free Full-Text | Titanium Impurity Control in V …

The sodium smelting of vanadium–titanium magnetite (VTM) can realize a multi-component comprehensive utilization of VTM. To broaden the application of the vanadium-bearing pig iron produced through this process, it is imperative to maintain the titanium content in molten iron at a very low level. In this study, the effects of …

A new process for the recovery of iron, vanadium, and titanium …

A systematical theory of vanadium and titanium magnetite smelting in blast furnace was established. View. Show abstract. Magneto-Chemical Study of the Generalized Titanomagnetite in Volcanic Rocks.

Smelting Reduction Characteristics and Mechanism of …

The smelting reduction test of vanadium–titanium magnetite carbon-bearing pellet in the bath was conducted under laboratory condition, and the effect of end slag basicity, the …

Separations | Free Full-Text | Prediction of the Vanadium …

The vanadium content of molten iron is an important economic indicator for a vanadium–titanium magnetite smelting blast furnace, and it is of great importance in blast furnace production to be able to accurately predict it and optimize the operation of vanadium extraction. Based on the historical data of a commercial blast furnace, the …

Effect of Calcium Oxide on the Crushing Strength, Reduction, …

The effect of calcium oxide on the crushing strength, reduction, and smelting performance of high-chromium vanadium–titanium magnetite pellets (HCVTMP) was studied in this work. The main characterization methods of an electronic universal testing machine (EUTM), X-ray fluorescent (XRF), inductively-coupled plasma …

Materials | Free Full-Text | Fusion Separation of Vanadium-Titanium …

Vanadium-titanium magnetite is a complex symbiotic iron ore resource composed of iron, vanadium, titanium and other metals, which is one of the most important iron ore resources in China …

Analysing the HIsmelt process for smelting vanadium–titanium …

The control temperature for smelting VTM using the HIsmelt process is 1425°C, with a reduction time of 20–30 min, which is conducive to the transfer of vanadium to the molten iron and the enrichment of titanium in the slag. To ensure vanadium and titanium are efficiently utilized, a basicity control of 0.8 is appropriate.

Present Status and Development of Comprehensive Utilization of Vanadium

The main products of vanadium-titanium magnetite beneficiation are titanium iron concentrate (iron ore) containing about 50% of titanium in V-Ti magnetite, ilmenite concentrate containing about 50% of titanium, and cobalt sulfide concentrate [1,2,3,4].Titanium iron concentrate is mainly used for iron making through blast furnace …

Reduction Behaviors of Iron, Vanadium and Titanium Oxides in Smelting

The complicated reduction behaviors of iron, vanadium and titanium oxides must be accurately controlled for the successful smelting of vanadium titanomagnetite. The aim of this study is to investigate the effects of the binary basicity, MgO content, smelting temperature, duration and reductants on the reduction of iron, vanadium and …

Smelting Reduction Characteristics and Mechanism of Vanadium–Titanium

The calcium hydroxide (Ca(OH) 2) was used as fluxes to adjust the basicity of vanadium–titanium magnetite carbon-bearing pellet.Its purity was 95%. 2.3 Smelting Reduction Experimental Method of Vanadium–Titanium Magnetite Carbon-Bearing Pellet. Firstly, a certain amount of vanadium–titanium magnetite, coal and Ca(OH) 2 …

Analysing the HIsmelt process for smelting vanadium–titanium …

In this paper, the vanadium and titanium distribution behavior at 1450 °C in the basicity range of 0.3–1.2 during HIsmelt smelting vanadium titano-magnetite was investigated experimentally for ...

Phase transformation and slag evolution of vanadium–titanium …

Vanadium titano-magnetite is an important iron ore resource containing iron, vanadium and titanium. Although iron and vanadium can be recovered by the traditional blast furnace process, titanium can only be stored in the form of TiO2 bearing slag, which resulting in a great waste of titanium resources.

Thermodynamic Calculations on Electric Furnace Smelting …

At present, vanadium–titanium magnetite is mainly utilized to produce hot metal and slag through the blast furnace (BF) process. However, the recovery of Fe, V and Ti are 70, 50% and less than 10% of raw ore respectively [].There are approximately 600,000 tons of titanium slag containing 22–25% TiO 2 produced by blast furnace …

Effect of nickel oxide additive on smelting mechanism of …

The CVTM contains iron, titanium, vanadium, chromium, and many other elements such as nickel and cobalt [1,2]. The production methods of nickel pig iron mainly include BF smelting, rotary Kiln-electric furnace (RKEF) smelting, and …

Research on the Slag Phase Type of Vanadium-Titanium …

In this paper, the vanadium and titanium distribution behavior at 1450 °C in the basicity range of 0.3–1.2 during HIsmelt smelting vanadium titano-magnetite was investigated experimentally for ...

Separations | Free Full-Text | Process Mineralogy of Vanadium …

Vanadium titanomagnetite (VTM) is a valuable multi-element symbiotic ore mainly composed of iron, vanadium, and titanium, as well as small amounts of chromium, nickel and cobalt [1,2,3].The global resource reserves of the VTM ore are extremely rich (over 40 billion tons) and are mainly distributed in Russia, South Africa, China, the United …

(PDF) Reduction and Smelting of Vanadium …

The smelting experiments of vanadium-titanium magnetite pre-reduced pellets were carried out using a vertical electric furnace heated by lanthanum chromite elements under the high-purity argon gas ...

Analysing the HIsmelt process for smelting …

In response to the problem of rich vanadium–titanium magnetite (VTM) resources in China contrasting with low blast furnace utilization, a HIsmelt process for …

Viscosity of CaO–SiO2–Al2O3–MgO–TiO2–FeO Slag in

Vanadium–titanium magnetite is a complex ore with iron, vanadium, titanium, and other valuable elements, and it is of great significance to recycle the valuable elements. HIsmelt smelting reduction of vanadium–titanium magnetite is a clean and effective ironmaking process. The effect of TiO2 content on the viscosity of …

Effect of Smelting Time on Vanadium and Titanium …

In this paper, the effect of smelting time on the vanadium and titanium distribution behavior and slag viscosity properties in the HIsmelt smelting of vanadium–titanium magnetite is investigated for the first …

Optimization of Basicity of High Ti Slag for Efficient Smelting …

The aim of this study is to investigate the effects of the binary basicity, MgO content, smelting temperature, duration and reductants on the reduction of iron, vanadium and titanium oxides during ...

Effect of Smelting Time on Vanadium and Titanium …

The experimental results show that extending the smelting time increases the FeO content in the slag, the LV rose from 0.66 to 5.02, the LTi declined from 206.90 …

Melting Properties and Phase Composition Transformation …

The non-blast furnace process, capable of achieving complete smelting of vanadium titanomagnetite with a high titanium grade in the slag, is also conducive to titanium recycling. It is regarded as an effective solution for the comprehensive recovery of iron, vanadium, and titanium from vanadium titanomagnetite . A comparison of existing …

The extraction of vanadium from titanomagnetites and other sources

Vanadium, as well as titanium, can be recovered from the slags generated in the smelting of titanomagnetite ores (Gabra and Malinsky, 1981, Hukkanen and Walden, 1985, Chen et al., 2013) or the refining of steel (Hitching and Kelly, 1982, Steinberg et al., 2011). Large accumulations of such slags can be found in various locations in the world.

Behavior of vanadium during reduction and smelting of …

In the DR-EF smelting process, vanadium oxides and iron oxides are reduced to molten iron, while titanium oxides are enriched in slag. Vanadium-bearing …

Superconducting transition temperatures of pure vanadium …

This effect is discussed here for the $ensuremath{beta}$ phase of vanadium-titanium alloys. Disorder is modeled using the coherent potential approximation while …

Performance calculation of slag from vanadium titano …

Vanadium titano-magnetite is an important iron ore resource containing iron, vanadium and titanium. Although iron and vanadium can be recovered by the traditional blast furnace process, titanium can only be stored in the form of TiO2 bearing slag, which resulting in a great waste of titanium resources. ... It is easy to produce Ti(C, N) in the ...

Analysis of titanium distribution behaviour in vanadium …

In this paper, the vanadium and titanium distribution behavior at 1450 °C in the basicity range of 0.3–1.2 during HIsmelt smelting vanadium titano-magnetite was investigated experimentally for ...

Preparation, Sintering Behavior and Consolidation Mechanism of Vanadium

High-quality oxidized pellets are the basis to achieve high-efficiency utilization of vanadium–titanium magnetite (VTM) ores. Bentonite was used as a binder of VTM. The main phase composition of VTM is titanomagnetite and ilmenite. When the amount of bentonite is 1%, the compressive strength and dropping strength of VTM …

High-Efficiency Smelting Separation of …

Keywords Vanadium–titanium magnetite · Smelting separation · Electric furnace smelting · Ecient utilization of iron ore Introduction South African vanadium–titanium magnetite is a complex mineral resource rich in iron, vanadium, titanium, and chro-mium [1–3]. Its ore composition is composed of more than 20 elements [4–6].

Analysing the HIsmelt process for smelting vanadium–titanium …

In 2019, China conducted smelting experiments on vanadium–titanium magnetite (VTM) using this technology. VTM is an important strategic resource with a complex phase composition and mineral phase structure. A tight solid solution of titanium magnetite is formed from titanium and iron.

Distribution behavior of vanadium and titanium between hot …

Abstract. The HIsmelt process is well suited for smelting vanadium-titanium magnetite and has significant potential. In this paper, the vanadium and titanium …

Appropriate titanium slag composition during smelting of vanadium …

Trans. Nonferrous Met. Soc. China 28(2018) 2528âˆ'2537 Appropriate titanium slag composition during smelting of vanadium titanomagnetite metallized pellets Shuai WANG, Yu-feng GUO, Tao JIANG, Feng CHEN, Fu-qiang ZHENG, Min-jun TANG, Ling-zhi YANG, Guan-zhou QIU School of Minerals Processing and …