The complex processing of titanomagnetite concentrates of the Gremyakha-vyrmes deposit with extraction of vanadium and titanium

Titanomagnetites are a complex raw material with a high content of valuable components: iron (35–65 %), vanadium (0.5–1.5 %) and titanium (2–14 %). Today, titanium–magnetite concentrates are processed in two ways: blast furnace (Russia, China) and using electric smelting (South Africa). The blast–furnace method is applicable only for low–titanium titanomagnetites. In the case of using titanomagnetite concentrates with a titanium dioxide content of more than 4 %, the method of electric smelting with preliminary reduction is applicable. Both technologies aim to recover the two components iron and vanadium, while titanium is not recovered. In this regard, the development of a complex technology for processing titanomagnetite concentrate to obtain iron in granular form, vanadium pentoxide and titanium is urgent.

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Experimental Study of Softening and Melting Properties on Indonesia Vanadium-Titanium Sinters

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.284-286.1039 ◽

2011 ◽

Vol 284-286 ◽

pp. 1039-1043 ◽

Cited By ~ 1

Author(s):

Qiang Jian Gao ◽

Guo Wei ◽

Lin Mu ◽

Gang Du ◽

Feng Man Shen

Keyword(s):

Blast Furnace ◽

Molten Slag ◽

Softening Temperature ◽

Melting Zone ◽

Raw Material ◽

Blast Furnace Process ◽

Furnace Process ◽

Melting Properties ◽

Vanadium Titanium ◽

Titanium Magnetite

As a raw material, Indonesia vanadium-titanium sinters are being applied to the blast furnace process for iron making in the typical iron and steel plant. In order to keep the health running of blast furnace process, in this work we have investigated the softening and melting properties of Indonesia vanadium-titanium sinters. We found that the content of vanadium-titanium magnetite in sinter is correlated with the softening and melting ranges for those sinters considered here. With the increasing of the vanadium-titanium magnetite in sinter, the starting softening temperature increases gradually and the final softening temperature increases as well, thereby the softening range becomes narrow. Both starting and final melting temperatures begin to ascent, and the variation of melting range is not obvious. In addition, we also found that the coke is wetted by the molten slag and iron. From the viewpoint of blast furnace process, the softening and melting zone has to move downward. In this zone of blast furnace the contact area of solid-liquid phase will get larger because of the close contract among the molten slag, iron and coke. On one hand, this kind of behavior can definitely speed up the reduction of iron oxide. On the other hand, it simultaneously worse the ventilation properties and affect the normal running of air flow, because a lot of iron and slag can not be got smoothly into the hearth through coke layer.

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Estimation of indices of BF heat of titanium-magnetite concentrates with different titanium dioxide content

Ferrous Metallurgy Bulletin of Scientific Technical and Economic Information ◽

10.32339/0135-5910-2019-2-154-165 ◽

2019 ◽

Vol 75 (2) ◽

pp. 154-165 ◽

Cited By ~ 1

Author(s):

A. N. Dmitriev ◽

G. Yu. Vit’kina ◽

R. V. Petukhov ◽

S. A. Petrova ◽

Yu. A. Chesnokov

Keyword(s):

Titanium Dioxide ◽

Iron Ore ◽

Raw Materials ◽

Slag Viscosity ◽

Hot Strength ◽

Titanium Dioxide Content ◽

Metallurgical Processing ◽

Economic Indices ◽

Academy Of Sciences ◽

Titanium Magnetite

Russia owns world largest reserves of titanium- magnetite and ilmenite- titanium- magnetite ores. Following the stepby-step inclusion into metallurgical processing of titanium- magnetite raw materials, the matter of maximum extraction of iron, vanadium and titanium becomes more and more actual. Kachkanar group of deposits of titanium- magnetite ores consists of two deposits: Gusevgoskoe and Sobstvenno-Kachkanar. At present JSC EVRAZ NTMK uses titanium- magnetite sinter and pellets, produced of Gusevgorskoe deposit ores. To make up the dropped out capacities and to keep the volume of mined ore at the level of 55 m t/year, it is planned to put into operation the reserved Sobstvenno-Kachkanar deposit. To process the titanium- magnetite ores of this deposit, their specific peculiarities should be taken into consideration. In particular, the increased TiO2content in iron ore concentrate up to 3.4% might require corrections of the BF technology. In this connection a study of metallurgical properties of lump iron ore raw materials with different titanium dioxide content was carried out. To clarify the pellets phase components a method of X-ray-phase analysis was used. The studies were done at CKP “Ural-M” equipment in the Institute of Metallurgy, Ural branch of Russian academy of Sciences. It was determined that pellets chemistry was represented by hematite (from 77 up to 89%), magnetite (from 2.84 up to 10.44%), complicated diopside (from 2 up to 10%), as well as in a small amount by quartz, hedenbergite, corundum, rutile, ferro-periclase, ilmenite, wollastonite, α-Fe, wustite. Results of viscosity calculation of obtained slags showed that it is within a range, typical for real BF slags viscosity. The obtained values of slag viscosity do not offer problems with slag regime of BF heat. It was shown, that increase of titanium dioxide content in pellets does not give rise to quality deterioration of iron ore raw materials preparation to BF heat as volume of introduced concentrate with increase TiO2content into the materials is increasing. Increase of hot strength and pellets temperature of beginning of softening, the pellets having increased titanium dioxide content, will positively affect main technical and economic indices of BF heat – coke rate and productivity, that was confirmed by BF indices calculation by application of balance logical and statistical model of BF process.

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Pyrometallurgical processing of high-titaniferous ores.

Ferrous Metallurgy Bulletin of Scientific Technical and Economic Information ◽

10.32339/0135-5910-2020-12-1219-1229 ◽

2020 ◽

Vol 76 (12) ◽

pp. 1219-1229

Author(s):

A. N. Dmitriev ◽

G. Yu. Vit’kina ◽

R. V. Alektorov

Keyword(s):

Titanium Dioxide ◽

Blast Furnace ◽

Silicon Content ◽

Raw Materials ◽

Hot Metal ◽

Furnace Melting ◽

Pyrometallurgical Processing ◽

Chelyabinsk Region ◽

Titanium Processing ◽

Titanium Magnetite

The future development of Ural mineral and raw materials base of steel industry is considerably stipulated by the development of deposits of titanium-magnetite ores, the reserves of which are accounted for near 77% of iron ores of Urals. It was shown, that the content of titanium dioxide as well as harmful impurities in the titanium-magnetite have the decisive meaning for selection of processing technology of them for extraction out of them vanadium and other useful components. Technological schemes of the titanium-magnetite enrichment and industrial methods of titanium-magnetite concentrates processing considered. Examples of titanium-magnetite processing by coke-BF and coke-less schemes given. The problems of blast furnace melting of titanium-magnetite ores highlighted. Main problems relate to formation of refractory compounds in a form of carbo-nitrides during reduction of titanium and infusible masses in blast furnace hearth. It was shown, that intensification if carbides precipitation is stipulated by increase of intensity of titanium reduction at increased temperatures of a heat products and requires the BF heat to be run at minimal acceptable temperature mode. Technological solutions, necessary to implement in blast furnace for iron ore raw materials with increased content of titanium processing were presented, including increase of basicity of slag from 1.2 to 1.25-1.30, increase of pressure at the blast furnace top from 1.8 to 2.2 atm, decrease of silicon content in hot metal from 0.1 to 0.05%, application of manganese-containing additives. It was noted, that theoretically the blast furnace melting of titanium-magnetite is possible at titanium dioxide content in slag up to 40% when application of the abovementioned technological solutions, silicon content in hot metal to 0.01% and very stable heat conditions of a blast furnace. The actuality of titanium and its pigmental dioxide production increase was noted. Possibilities of development of Medvedevskoje and Kopanskoje deposits of high-titaniferous ores in Chelyabinsk region with extraction not only iron and vanadium but also titanium considered.

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Processing of Agglomerates and Pellets Containing Various Amounts of Titanium Dioxide

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1026.102 ◽

2021 ◽

Vol 1026 ◽

pp. 102-108

Author(s):

Galina Yu. Vitkina ◽

Andrey N. Dmitriev ◽

Roman V. Alektorov ◽

Elena A. Vyaznikova

Keyword(s):

Titanium Dioxide ◽

Blast Furnace ◽

Iron Ore ◽

Raw Materials ◽

Chemical Properties ◽

Blast Furnace Smelting ◽

Mass Transfer Processes ◽

Titanium Dioxide Content ◽

Furnace Smelting

Questions about the oxidative roasting of iron ore raw materials (agglomerates and pellets) are studied. Features of the phase structure of the iron ore raw materials containing titan and vanadium are discussed. Reducibility, durability, and the softening and melting temperatures of metallurgical iron ore raw materials are studied in vitro. The objects of the research are titaniferous ores containing different amounts of titan dioxide. The behaviors of agglomerates and pellets in a blast furnace are studied, and the influence of their physical and chemical properties on heat and mass transfer processes are researched by means of a mathematical model. The main indices of blast furnace smelting—productivity, coke consumption, composition of top gas, cast iron, and slag—are shown. It is established that the increase in titanium dioxide content in pellets, as the amount of concentrate with increased TiO2 content increases, does not cause deterioration in the quality of iron ore raw materials being prepared for blast furnace smelting. At the same time, as the hot strength of raw materials increases, the temperature at which softening begins increases and the temperature interval of softening of materials decreases.

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RESEARCHING THE POSSIBILITY OF MAGNETIC ENRICHMENT OF TITANIUM-MAGNETIC ORE OF THE TEBINBULAK DEPOSIT

EurasianUnionScientists ◽

10.31618/esu.2413-9335.2021.1.86.1348 ◽

2021 ◽

pp. 9-14

Author(s):

Sh. Alikulov ◽

O. Azimov ◽

L. Azizov ◽

G. Dzhalilova

Keyword(s):

Titanium Dioxide ◽

Iron Oxides ◽

Vanadium Pentoxide ◽

Material Composition ◽

Raw Material ◽

Iron Ores ◽

Titanium Oxides ◽

Complex Composition ◽

Magnetic Enrichment

The purpose of this research is to study the material composition of the Tebinbulak ore and to develop a technology for extracting iron, vanadium and titanium. Titanomagnetites are a type of ore raw material with a complex composition, containing iron oxides, titanium dioxide and vanadium pentoxide. The technology for processing titanomagnetite ores differs from the technology for beneficiation of iron ores in that during the processing it is necessary to separate vanadium and titanium oxides from iron oxides.

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Raw material mix optimization system for sintering plant and blast furnace at CST

Revue de Métallurgie ◽

10.1051/metal:2006157 ◽

2006 ◽

Vol 103 (2) ◽

pp. 76-81

Author(s):

C. Perin Filho ◽

D. Tassinari Miranda ◽

E. Medeiros Milanez ◽

E. Luiz Massanori Harano ◽

E. Torres Bispo dos Santos ◽

...

Keyword(s):

Blast Furnace ◽

Raw Material ◽

Optimization System ◽

Raw Material Mix ◽

Sintering Plant

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ChemInform Abstract: THE VANADIUM PENTOXIDE-TITANIUM DIOXIDE SYSTEM. STRUCTURAL INVESTIGATION AND ACTIVITY FOR THE OXIDATION OF BUTADIENE

Chemischer Informationsdienst ◽

10.1002/chin.197930159 ◽

1979 ◽

Vol 10 (30) ◽

Author(s):

G. C. BOND ◽

A. J. SARKANY ◽

G. D. PARFITT

Keyword(s):

Titanium Dioxide ◽

Vanadium Pentoxide ◽

Structural Investigation

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The digestibility of four ingredients in rainbow trout (Oncorhynchus mykiss Walbaum) diets

Proceedings of the British Society of Animal Science ◽

10.1017/s1752756200597877 ◽

1998 ◽

Vol 1998 ◽

pp. 135-135

Author(s):

R.N. Weatherup ◽

K.J. McCracken ◽

D.A. Rice ◽

J. McKendry ◽

R. Hoey

Keyword(s):

Titanium Dioxide ◽

Rainbow Trout ◽

Oncorhynchus Mykiss ◽

Basal Diet ◽

Reliable Data ◽

Chromic Oxide ◽

Raw Material ◽

Feed Ingredients ◽

Rainbow Trout Oncorhynchus Mykiss ◽

Fish Diets

The marker technique has been used widely in trout digestibility studies due to practical difficulties in obtaining “true” faeces samples directly from fish. However this technique is also relatively difficult and there are few good systems for faeces collection. Reliable data on raw material digestibilities are therefore scarce. Traditionally, chromic oxide has been used as a marker. However this substance can give rise to skin allergies in humans and has been implicated as a carcinogen. Jagger et al., (1992) suggested that titanium dioxide could be used successfully as a digestibility marker in pig diets. The present study was designed to determine the digestibility of four feed ingredients for trout (prairie meal, maize distillers, soya 50 and extruded wheat) and to evaluate the use of chromic oxide or titanium dioxide as a digestibility marker in fish diets.Each test ingredient was included in a basal diet at 0, 100, 200, 300 and 400 g/kg. Titanium dioxide and chromic oxide were included in the basal diet at 1 and 3.7 g/kg respectively.

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Adjustment of a technology of cast iron smelting in the blast furnace of jsc "ural steel" w ith a volume of 1232 см3 with charge h a v in g 95% share of Mikhailovskii GOK pellets

Ferrous Metallurgy Bulletin of Scientific Technical and Economic Information ◽

10.32339/0135-5910-2021-7-768-775 ◽

2021 ◽

Vol 77 (7) ◽

pp. 768-775

Author(s):

I. F. Iskakov ◽

G. A. Kunitsyn ◽

D. V. Lazarev ◽

А. А. Red`kin ◽

S. A. Trubitsyn ◽

...

Keyword(s):

Blast Furnace ◽

Iron Ore ◽

Raw Materials ◽

Raw Material ◽

Material Base ◽

Hot Metal ◽

Charging System ◽

Iron Smelting ◽

Gas Consumption ◽

A Charge

To use effectively internal raw material base, JSC “Ural Steel” accomplished I category major overhaul of the blast furnace No. 2. The main purpose of the overhaul was to design a rational profile which could ensure an ability to operate with a charge containing 95 % of Mikhailovskii GOK (mining and concentrating plant) pellets having basicity of 0.5 by CaO/SiO2. The blast furnace No. 2 having useful volume of 1232 m3, was constructed by design of Danieli Corus, the Netherlands, and was blown in on December 30, 2020. In the process of guarantee tests, step-by-step increase of Mikhailovskii GOK pellets (Fetotal = 60.5 %, CaO/SiO2 = 0.5) content in the charge iron ore part was being accomplished from 55 to 95.1%. Charging of the blend containing pellets in the amount of 55% of iron ore part, was done by charging system 4OOCC + 1COOCC (Ore - Coke) with filling level 1.5 m. Under conditions of pellets part increase in the blend, the charging system was changed to decrease their content at the periphery, to increase it in the ore ridge zone and make it intermediate between periphery and the ore ridge. At the pellets share in the iron ore raw materials 0.75 the charging system was used as the following: 3OOCC + 1COOC + 1COOCC, while at the content 95.1% the following charging system was used: 2COOC + 2COOC + 1COOCC. It was noted that in the period of guarantee tests the furnace running was smooth. The average silicon content in the hot metal was 0.70% at the standard deviation 0.666. Sulfur content in the hot metal did not exceed 0.024%, the blowing and natural gas consumption figures were 2100 m3/min and 11000 m3/min correspondently, oxygen content in the blowing 26.5%, hot blowing and top smoke pressure figures were 226.5 and 109.8 KPa correspondently. The productivity of the furnace was reached as high as 2358 t/day at the specific coke rate 433 kg/t of hot metal. After guarantee tests completion, the pellets content in the iron ore part was decreased gradually from 95 down to 50%. The decreasing was made by 5% in every 6 hours of operation. Application of the mastered technology of the blast furnace No. 2 with the increased share of pellets will enable to stably supply the blast furnaces No. 1, 3 and 4 by iron ore raw materials in the proportion of 30-35% of pellets and 65-70% of sinter.

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