Ferrite grade iron oxides from ore rejects
Abstract Iron oxyhydroxides and hydroxides were synthesized from chemically beneficiated high $ SiO_{2} $/$ Al_{2} $$ O_{3} $ low-grade iron ore (57.49% $ Fe_{2} $$ O_{3} $) rejects and heated to get iron oxides of 96–99.73% purity. The infrared band positions, isothermal weight loss and thermogravi...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Rane, K. S. [verfasserIn] |
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| Format: |
Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
2001 |
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| Schlagwörter: |
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| Anmerkung: |
© Indian Academy of Sciences 2001 |
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| Übergeordnetes Werk: |
Enthalten in: Bulletin of materials science - Springer India, 1979, 24(2001), 3 vom: Juni, Seite 331-338 |
|---|---|
| Übergeordnetes Werk: |
volume:24 ; year:2001 ; number:3 ; month:06 ; pages:331-338 |
| Links: |
|---|
| DOI / URN: |
10.1007/BF02704931 |
|---|
| Katalog-ID: |
OLC2055192485 |
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| 245 | 1 | 0 | |a Ferrite grade iron oxides from ore rejects |
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| 520 | |a Abstract Iron oxyhydroxides and hydroxides were synthesized from chemically beneficiated high $ SiO_{2} $/$ Al_{2} $$ O_{3} $ low-grade iron ore (57.49% $ Fe_{2} $$ O_{3} $) rejects and heated to get iron oxides of 96–99.73% purity. The infrared band positions, isothermal weight loss and thermogravimetric and chemical analysis established the chemical formulas of iron-oxyhydroxides as γ-FeOOH.0.$ 3H_{2} $O; α-FeOOH.0.$ 2H_{2} $O and amorphous FeOOH. The thermal products of all these were α-$ Fe_{2} $$ O_{3} $ excepting that of γ-FeOOH.0.$ 3H_{2} $O which gave mainly γ-$ Fe_{2} $$ O_{3} $ and some admixture of α-$ Fe_{2} $$ O_{3} $. The hydrazinated iron hydroxides and oxyhydroxides, on the other hand, decomposed autocatalytically to mainly γ-$ Fe_{2} $$ O_{3} $. Hydrazine method modifies the thermal decomposition path of the hydroxides. The saturation magnetization,Js, values were found to be in the range 60–71 emu $ g^{−1} $ which are close to the reported values for γ-$ Fe_{2} $$ O_{3} $. Mechanism of the γ-$ Fe_{2} $$ O_{3} $ formation by hydrazine method is discussed. | ||
| 650 | 4 | |a Ore rejects | |
| 650 | 4 | |a chemical beneficiation | |
| 650 | 4 | |a iron hydroxide | |
| 650 | 4 | |a iron oxyhydroxide | |
| 650 | 4 | |a ferrite | |
| 700 | 1 | |a Verenkar, V. M. S. |4 aut | |
| 700 | 1 | |a Sawant, P. Y. |4 aut | |
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10.1007/BF02704931 doi (DE-627)OLC2055192485 (DE-He213)BF02704931-p DE-627 ger DE-627 rakwb eng 600 VZ Rane, K. S. verfasserin aut Ferrite grade iron oxides from ore rejects 2001 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Indian Academy of Sciences 2001 Abstract Iron oxyhydroxides and hydroxides were synthesized from chemically beneficiated high $ SiO_{2} $/$ Al_{2} $$ O_{3} $ low-grade iron ore (57.49% $ Fe_{2} $$ O_{3} $) rejects and heated to get iron oxides of 96–99.73% purity. The infrared band positions, isothermal weight loss and thermogravimetric and chemical analysis established the chemical formulas of iron-oxyhydroxides as γ-FeOOH.0.$ 3H_{2} $O; α-FeOOH.0.$ 2H_{2} $O and amorphous FeOOH. The thermal products of all these were α-$ Fe_{2} $$ O_{3} $ excepting that of γ-FeOOH.0.$ 3H_{2} $O which gave mainly γ-$ Fe_{2} $$ O_{3} $ and some admixture of α-$ Fe_{2} $$ O_{3} $. The hydrazinated iron hydroxides and oxyhydroxides, on the other hand, decomposed autocatalytically to mainly γ-$ Fe_{2} $$ O_{3} $. Hydrazine method modifies the thermal decomposition path of the hydroxides. The saturation magnetization,Js, values were found to be in the range 60–71 emu $ g^{−1} $ which are close to the reported values for γ-$ Fe_{2} $$ O_{3} $. Mechanism of the γ-$ Fe_{2} $$ O_{3} $ formation by hydrazine method is discussed. Ore rejects chemical beneficiation iron hydroxide iron oxyhydroxide ferrite Verenkar, V. M. S. aut Sawant, P. Y. aut Enthalten in Bulletin of materials science Springer India, 1979 24(2001), 3 vom: Juni, Seite 331-338 (DE-627)130547476 (DE-600)781668-6 (DE-576)9130547474 0250-4707 nnns volume:24 year:2001 number:3 month:06 pages:331-338 https://doi.org/10.1007/BF02704931 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 AR 24 2001 3 06 331-338 |
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10.1007/BF02704931 doi (DE-627)OLC2055192485 (DE-He213)BF02704931-p DE-627 ger DE-627 rakwb eng 600 VZ Rane, K. S. verfasserin aut Ferrite grade iron oxides from ore rejects 2001 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Indian Academy of Sciences 2001 Abstract Iron oxyhydroxides and hydroxides were synthesized from chemically beneficiated high $ SiO_{2} $/$ Al_{2} $$ O_{3} $ low-grade iron ore (57.49% $ Fe_{2} $$ O_{3} $) rejects and heated to get iron oxides of 96–99.73% purity. The infrared band positions, isothermal weight loss and thermogravimetric and chemical analysis established the chemical formulas of iron-oxyhydroxides as γ-FeOOH.0.$ 3H_{2} $O; α-FeOOH.0.$ 2H_{2} $O and amorphous FeOOH. The thermal products of all these were α-$ Fe_{2} $$ O_{3} $ excepting that of γ-FeOOH.0.$ 3H_{2} $O which gave mainly γ-$ Fe_{2} $$ O_{3} $ and some admixture of α-$ Fe_{2} $$ O_{3} $. The hydrazinated iron hydroxides and oxyhydroxides, on the other hand, decomposed autocatalytically to mainly γ-$ Fe_{2} $$ O_{3} $. Hydrazine method modifies the thermal decomposition path of the hydroxides. The saturation magnetization,Js, values were found to be in the range 60–71 emu $ g^{−1} $ which are close to the reported values for γ-$ Fe_{2} $$ O_{3} $. Mechanism of the γ-$ Fe_{2} $$ O_{3} $ formation by hydrazine method is discussed. Ore rejects chemical beneficiation iron hydroxide iron oxyhydroxide ferrite Verenkar, V. M. S. aut Sawant, P. Y. aut Enthalten in Bulletin of materials science Springer India, 1979 24(2001), 3 vom: Juni, Seite 331-338 (DE-627)130547476 (DE-600)781668-6 (DE-576)9130547474 0250-4707 nnns volume:24 year:2001 number:3 month:06 pages:331-338 https://doi.org/10.1007/BF02704931 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 AR 24 2001 3 06 331-338 |
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10.1007/BF02704931 doi (DE-627)OLC2055192485 (DE-He213)BF02704931-p DE-627 ger DE-627 rakwb eng 600 VZ Rane, K. S. verfasserin aut Ferrite grade iron oxides from ore rejects 2001 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Indian Academy of Sciences 2001 Abstract Iron oxyhydroxides and hydroxides were synthesized from chemically beneficiated high $ SiO_{2} $/$ Al_{2} $$ O_{3} $ low-grade iron ore (57.49% $ Fe_{2} $$ O_{3} $) rejects and heated to get iron oxides of 96–99.73% purity. The infrared band positions, isothermal weight loss and thermogravimetric and chemical analysis established the chemical formulas of iron-oxyhydroxides as γ-FeOOH.0.$ 3H_{2} $O; α-FeOOH.0.$ 2H_{2} $O and amorphous FeOOH. The thermal products of all these were α-$ Fe_{2} $$ O_{3} $ excepting that of γ-FeOOH.0.$ 3H_{2} $O which gave mainly γ-$ Fe_{2} $$ O_{3} $ and some admixture of α-$ Fe_{2} $$ O_{3} $. The hydrazinated iron hydroxides and oxyhydroxides, on the other hand, decomposed autocatalytically to mainly γ-$ Fe_{2} $$ O_{3} $. Hydrazine method modifies the thermal decomposition path of the hydroxides. The saturation magnetization,Js, values were found to be in the range 60–71 emu $ g^{−1} $ which are close to the reported values for γ-$ Fe_{2} $$ O_{3} $. Mechanism of the γ-$ Fe_{2} $$ O_{3} $ formation by hydrazine method is discussed. Ore rejects chemical beneficiation iron hydroxide iron oxyhydroxide ferrite Verenkar, V. M. S. aut Sawant, P. Y. aut Enthalten in Bulletin of materials science Springer India, 1979 24(2001), 3 vom: Juni, Seite 331-338 (DE-627)130547476 (DE-600)781668-6 (DE-576)9130547474 0250-4707 nnns volume:24 year:2001 number:3 month:06 pages:331-338 https://doi.org/10.1007/BF02704931 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 AR 24 2001 3 06 331-338 |
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10.1007/BF02704931 doi (DE-627)OLC2055192485 (DE-He213)BF02704931-p DE-627 ger DE-627 rakwb eng 600 VZ Rane, K. S. verfasserin aut Ferrite grade iron oxides from ore rejects 2001 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Indian Academy of Sciences 2001 Abstract Iron oxyhydroxides and hydroxides were synthesized from chemically beneficiated high $ SiO_{2} $/$ Al_{2} $$ O_{3} $ low-grade iron ore (57.49% $ Fe_{2} $$ O_{3} $) rejects and heated to get iron oxides of 96–99.73% purity. The infrared band positions, isothermal weight loss and thermogravimetric and chemical analysis established the chemical formulas of iron-oxyhydroxides as γ-FeOOH.0.$ 3H_{2} $O; α-FeOOH.0.$ 2H_{2} $O and amorphous FeOOH. The thermal products of all these were α-$ Fe_{2} $$ O_{3} $ excepting that of γ-FeOOH.0.$ 3H_{2} $O which gave mainly γ-$ Fe_{2} $$ O_{3} $ and some admixture of α-$ Fe_{2} $$ O_{3} $. The hydrazinated iron hydroxides and oxyhydroxides, on the other hand, decomposed autocatalytically to mainly γ-$ Fe_{2} $$ O_{3} $. Hydrazine method modifies the thermal decomposition path of the hydroxides. The saturation magnetization,Js, values were found to be in the range 60–71 emu $ g^{−1} $ which are close to the reported values for γ-$ Fe_{2} $$ O_{3} $. Mechanism of the γ-$ Fe_{2} $$ O_{3} $ formation by hydrazine method is discussed. Ore rejects chemical beneficiation iron hydroxide iron oxyhydroxide ferrite Verenkar, V. M. S. aut Sawant, P. Y. aut Enthalten in Bulletin of materials science Springer India, 1979 24(2001), 3 vom: Juni, Seite 331-338 (DE-627)130547476 (DE-600)781668-6 (DE-576)9130547474 0250-4707 nnns volume:24 year:2001 number:3 month:06 pages:331-338 https://doi.org/10.1007/BF02704931 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 AR 24 2001 3 06 331-338 |
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10.1007/BF02704931 doi (DE-627)OLC2055192485 (DE-He213)BF02704931-p DE-627 ger DE-627 rakwb eng 600 VZ Rane, K. S. verfasserin aut Ferrite grade iron oxides from ore rejects 2001 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Indian Academy of Sciences 2001 Abstract Iron oxyhydroxides and hydroxides were synthesized from chemically beneficiated high $ SiO_{2} $/$ Al_{2} $$ O_{3} $ low-grade iron ore (57.49% $ Fe_{2} $$ O_{3} $) rejects and heated to get iron oxides of 96–99.73% purity. The infrared band positions, isothermal weight loss and thermogravimetric and chemical analysis established the chemical formulas of iron-oxyhydroxides as γ-FeOOH.0.$ 3H_{2} $O; α-FeOOH.0.$ 2H_{2} $O and amorphous FeOOH. The thermal products of all these were α-$ Fe_{2} $$ O_{3} $ excepting that of γ-FeOOH.0.$ 3H_{2} $O which gave mainly γ-$ Fe_{2} $$ O_{3} $ and some admixture of α-$ Fe_{2} $$ O_{3} $. The hydrazinated iron hydroxides and oxyhydroxides, on the other hand, decomposed autocatalytically to mainly γ-$ Fe_{2} $$ O_{3} $. Hydrazine method modifies the thermal decomposition path of the hydroxides. The saturation magnetization,Js, values were found to be in the range 60–71 emu $ g^{−1} $ which are close to the reported values for γ-$ Fe_{2} $$ O_{3} $. Mechanism of the γ-$ Fe_{2} $$ O_{3} $ formation by hydrazine method is discussed. Ore rejects chemical beneficiation iron hydroxide iron oxyhydroxide ferrite Verenkar, V. M. S. aut Sawant, P. Y. aut Enthalten in Bulletin of materials science Springer India, 1979 24(2001), 3 vom: Juni, Seite 331-338 (DE-627)130547476 (DE-600)781668-6 (DE-576)9130547474 0250-4707 nnns volume:24 year:2001 number:3 month:06 pages:331-338 https://doi.org/10.1007/BF02704931 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 AR 24 2001 3 06 331-338 |
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Ferrite grade iron oxides from ore rejects |
| abstract |
Abstract Iron oxyhydroxides and hydroxides were synthesized from chemically beneficiated high $ SiO_{2} $/$ Al_{2} $$ O_{3} $ low-grade iron ore (57.49% $ Fe_{2} $$ O_{3} $) rejects and heated to get iron oxides of 96–99.73% purity. The infrared band positions, isothermal weight loss and thermogravimetric and chemical analysis established the chemical formulas of iron-oxyhydroxides as γ-FeOOH.0.$ 3H_{2} $O; α-FeOOH.0.$ 2H_{2} $O and amorphous FeOOH. The thermal products of all these were α-$ Fe_{2} $$ O_{3} $ excepting that of γ-FeOOH.0.$ 3H_{2} $O which gave mainly γ-$ Fe_{2} $$ O_{3} $ and some admixture of α-$ Fe_{2} $$ O_{3} $. The hydrazinated iron hydroxides and oxyhydroxides, on the other hand, decomposed autocatalytically to mainly γ-$ Fe_{2} $$ O_{3} $. Hydrazine method modifies the thermal decomposition path of the hydroxides. The saturation magnetization,Js, values were found to be in the range 60–71 emu $ g^{−1} $ which are close to the reported values for γ-$ Fe_{2} $$ O_{3} $. Mechanism of the γ-$ Fe_{2} $$ O_{3} $ formation by hydrazine method is discussed. © Indian Academy of Sciences 2001 |
| abstractGer |
Abstract Iron oxyhydroxides and hydroxides were synthesized from chemically beneficiated high $ SiO_{2} $/$ Al_{2} $$ O_{3} $ low-grade iron ore (57.49% $ Fe_{2} $$ O_{3} $) rejects and heated to get iron oxides of 96–99.73% purity. The infrared band positions, isothermal weight loss and thermogravimetric and chemical analysis established the chemical formulas of iron-oxyhydroxides as γ-FeOOH.0.$ 3H_{2} $O; α-FeOOH.0.$ 2H_{2} $O and amorphous FeOOH. The thermal products of all these were α-$ Fe_{2} $$ O_{3} $ excepting that of γ-FeOOH.0.$ 3H_{2} $O which gave mainly γ-$ Fe_{2} $$ O_{3} $ and some admixture of α-$ Fe_{2} $$ O_{3} $. The hydrazinated iron hydroxides and oxyhydroxides, on the other hand, decomposed autocatalytically to mainly γ-$ Fe_{2} $$ O_{3} $. Hydrazine method modifies the thermal decomposition path of the hydroxides. The saturation magnetization,Js, values were found to be in the range 60–71 emu $ g^{−1} $ which are close to the reported values for γ-$ Fe_{2} $$ O_{3} $. Mechanism of the γ-$ Fe_{2} $$ O_{3} $ formation by hydrazine method is discussed. © Indian Academy of Sciences 2001 |
| abstract_unstemmed |
Abstract Iron oxyhydroxides and hydroxides were synthesized from chemically beneficiated high $ SiO_{2} $/$ Al_{2} $$ O_{3} $ low-grade iron ore (57.49% $ Fe_{2} $$ O_{3} $) rejects and heated to get iron oxides of 96–99.73% purity. The infrared band positions, isothermal weight loss and thermogravimetric and chemical analysis established the chemical formulas of iron-oxyhydroxides as γ-FeOOH.0.$ 3H_{2} $O; α-FeOOH.0.$ 2H_{2} $O and amorphous FeOOH. The thermal products of all these were α-$ Fe_{2} $$ O_{3} $ excepting that of γ-FeOOH.0.$ 3H_{2} $O which gave mainly γ-$ Fe_{2} $$ O_{3} $ and some admixture of α-$ Fe_{2} $$ O_{3} $. The hydrazinated iron hydroxides and oxyhydroxides, on the other hand, decomposed autocatalytically to mainly γ-$ Fe_{2} $$ O_{3} $. Hydrazine method modifies the thermal decomposition path of the hydroxides. The saturation magnetization,Js, values were found to be in the range 60–71 emu $ g^{−1} $ which are close to the reported values for γ-$ Fe_{2} $$ O_{3} $. Mechanism of the γ-$ Fe_{2} $$ O_{3} $ formation by hydrazine method is discussed. © Indian Academy of Sciences 2001 |
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| title_short |
Ferrite grade iron oxides from ore rejects |
| url |
https://doi.org/10.1007/BF02704931 |
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| author2 |
Verenkar, V. M. S. Sawant, P. Y. |
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Verenkar, V. M. S. Sawant, P. Y. |
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| doi_str |
10.1007/BF02704931 |
| up_date |
2024-07-04T01:37:27.517Z |
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