Assessment of the possibility of using leucoxene-quartz concentrate as raw material for production of aluminium and magnesium titanates
Leucoxene-quartz concentrate is a large-tonnage by-product of development of the Timan oil-titanium field (oil-saturated sandstones) which is not commercially used at present. High content of titanium compounds (to 50 % by weight) and lack of industrial, cost-effective, and safe technologies for its...
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| Format: | Article |
| Language: | English |
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Saint-Petersburg Mining University
2023-12-01
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| Series: | Записки Горного института |
| Subjects: | |
| Online Access: | https://pmi.spmi.ru/pmi/article/view/16007?setLocale=en_US |
| _version_ | 1797359846673088512 |
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| author | Evgenii N. Kuzin Ivan G. Mokrushin Nataliya E. Kruchinina |
| author_facet | Evgenii N. Kuzin Ivan G. Mokrushin Nataliya E. Kruchinina |
| author_sort | Evgenii N. Kuzin |
| collection | DOAJ |
| description | Leucoxene-quartz concentrate is a large-tonnage by-product of development of the Timan oil-titanium field (oil-saturated sandstones) which is not commercially used at present. High content of titanium compounds (to 50 % by weight) and lack of industrial, cost-effective, and safe technologies for its processing determine a high relevance of the work. Conventional processing technologies allow increasing the concentration of TiO2, but they are only a preparation for complex and hazardous selective chlorination. The process of pyrometallurgical conversion of leucoxene-quartz concentrate into aluminium and magnesium titanates was investigated. It was ascertained that the temperature of solid-phase reaction in Al2O3-TiO2-SiO2 system necessary for the synthesis of aluminium titanate (Al2TiO5) is 1,558 °С, and for MgO-TiO2-SiO2 system – 1,372 °С. Scaling up the process made it possible to synthesize a significant number of samples of titanate-containing products, the phase composition of which was studied by X-ray phase analysis. Two main phases were identified in the products: 30 % aluminium/magnesium titanate and 40 % silicon dioxide. In products of pyrometallurgical processing in the presence of aluminium, phases of pseudobrookite (3.5 %) and titanite (0.5 %) were also found. It was ascertained that in magnesium-containing system the formation of three magnesium titanates is possible: MgTiO3 – 25, Mg2TiO4 – 35, MgTi2O5 – 40 %. Experiments on sulphuric acid leaching of samples demonstrated a higher degree of titanium compounds extraction during sulphuric acid processing. An integrated conceptual scheme for processing leucoxene-quartz concentrate to produce a wide range of potential products (coagulants, catalysts, materials for ceramic industry) was proposed. |
| first_indexed | 2024-03-08T15:29:43Z |
| format | Article |
| id | doaj.art-a0dab06593f44a719d97e7a46bfe4df7 |
| institution | Directory Open Access Journal |
| issn | 2411-3336 2541-9404 |
| language | English |
| last_indexed | 2024-03-08T15:29:43Z |
| publishDate | 2023-12-01 |
| publisher | Saint-Petersburg Mining University |
| record_format | Article |
| series | Записки Горного института |
| spelling | doaj.art-a0dab06593f44a719d97e7a46bfe4df72024-01-10T06:51:48ZengSaint-Petersburg Mining UniversityЗаписки Горного института2411-33362541-94042023-12-0126488689410.31897/PMI.2023.1516007Assessment of the possibility of using leucoxene-quartz concentrate as raw material for production of aluminium and magnesium titanatesEvgenii N. Kuzin0https://orcid.org/0000-0003-2579-3900Ivan G. Mokrushin1https://orcid.org/0000-0002-4095-8366Nataliya E. Kruchinina2https://orcid.org/0000-0001-7597-1993Mendeleev University of Chemical Technology of RussiaPerm State National Research UniversityMendeleev University of Chemical Technology of RussiaLeucoxene-quartz concentrate is a large-tonnage by-product of development of the Timan oil-titanium field (oil-saturated sandstones) which is not commercially used at present. High content of titanium compounds (to 50 % by weight) and lack of industrial, cost-effective, and safe technologies for its processing determine a high relevance of the work. Conventional processing technologies allow increasing the concentration of TiO2, but they are only a preparation for complex and hazardous selective chlorination. The process of pyrometallurgical conversion of leucoxene-quartz concentrate into aluminium and magnesium titanates was investigated. It was ascertained that the temperature of solid-phase reaction in Al2O3-TiO2-SiO2 system necessary for the synthesis of aluminium titanate (Al2TiO5) is 1,558 °С, and for MgO-TiO2-SiO2 system – 1,372 °С. Scaling up the process made it possible to synthesize a significant number of samples of titanate-containing products, the phase composition of which was studied by X-ray phase analysis. Two main phases were identified in the products: 30 % aluminium/magnesium titanate and 40 % silicon dioxide. In products of pyrometallurgical processing in the presence of aluminium, phases of pseudobrookite (3.5 %) and titanite (0.5 %) were also found. It was ascertained that in magnesium-containing system the formation of three magnesium titanates is possible: MgTiO3 – 25, Mg2TiO4 – 35, MgTi2O5 – 40 %. Experiments on sulphuric acid leaching of samples demonstrated a higher degree of titanium compounds extraction during sulphuric acid processing. An integrated conceptual scheme for processing leucoxene-quartz concentrate to produce a wide range of potential products (coagulants, catalysts, materials for ceramic industry) was proposed.https://pmi.spmi.ru/pmi/article/view/16007?setLocale=en_USleucoxene-quartz concentratetitanatespyrometallurgyhydrometallurgycomprehensive processingphase transformations |
| spellingShingle | Evgenii N. Kuzin Ivan G. Mokrushin Nataliya E. Kruchinina Assessment of the possibility of using leucoxene-quartz concentrate as raw material for production of aluminium and magnesium titanates Записки Горного института leucoxene-quartz concentrate titanates pyrometallurgy hydrometallurgy comprehensive processing phase transformations |
| title | Assessment of the possibility of using leucoxene-quartz concentrate as raw material for production of aluminium and magnesium titanates |
| title_full | Assessment of the possibility of using leucoxene-quartz concentrate as raw material for production of aluminium and magnesium titanates |
| title_fullStr | Assessment of the possibility of using leucoxene-quartz concentrate as raw material for production of aluminium and magnesium titanates |
| title_full_unstemmed | Assessment of the possibility of using leucoxene-quartz concentrate as raw material for production of aluminium and magnesium titanates |
| title_short | Assessment of the possibility of using leucoxene-quartz concentrate as raw material for production of aluminium and magnesium titanates |
| title_sort | assessment of the possibility of using leucoxene quartz concentrate as raw material for production of aluminium and magnesium titanates |
| topic | leucoxene-quartz concentrate titanates pyrometallurgy hydrometallurgy comprehensive processing phase transformations |
| url | https://pmi.spmi.ru/pmi/article/view/16007?setLocale=en_US |
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