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PREPARATION OF POLYMERIC ALUMINIUM FERRIC CHLORIDE FROM BAUXITE TAILINGS.

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Title: PREPARATION OF POLYMERIC ALUMINIUM FERRIC CHLORIDE FROM BAUXITE TAILINGS.
Authors: D. Ma1, M. Guo1, M. Zhang1 zhangmei@ustb.edu.cn
Source: Journal of Mining & Metallurgy. Section B: Metallurgy. 2013, Vol. 49 Issue 2, p225-231. 7p. 4 Charts, 10 Graphs.
Subjects: Bauxite, Ferric chloride, Hydrochloric acid, Calcium aluminate, Water purification
Abstract: Bauxite tailings are the main solid wastes in the ore dressing process. The Al2O3 and Fe2O3 contents in bauxite tailings can reach 50% and 13% respectively. The present study proposed a feasible method to use bauxite tailings to prepare polymeric aluminium ferric chloride (PAFC), a new composite inorganic polymer for water purification. Bauxite tailings roasted reacted with hydrochloric acid under air, pickle liquor which mainly contains Fe3+, Al3+ was generated, then calcium aluminate was used to adjust pH value and the basicity of the pickle liquor, the PAFC was subsequently prepared after the polymerization process. The optimal synthesizing parameters for the preparation of PAFC obtained were as follows: the concentration of hydrochloric acid of 24 wt%, ratio of hydrochloric acid to bauxite tailings of 6:1, temperature of 90°C, leaching time of 2.5 hours, ratio of pickle liquor to calcium aluminate of 12:1, polymerization temperature of 90°C and polymerization time of about 3 hours. The basicity of PAFC was higher than 68%, the sum concentration of Al2O3 and Fe2O3 was beyond 12.5%. The results of flocculation tests indicate that the PAFC has a better performance of removing the turbidity of wastewater compared to PAC, and PAFC prepared by bauxite tailings is a kind of high quality flocculants. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Mining & Metallurgy. Section B: Metallurgy is the property of Journal of Mining & Metallurgy and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Data: PREPARATION OF POLYMERIC ALUMINIUM FERRIC CHLORIDE FROM BAUXITE TAILINGS.
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  Data: <searchLink fieldCode="AR" term="%22D%2E+Ma%22">D. Ma</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22M%2E+Guo%22">M. Guo</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22M%2E+Zhang%22">M. Zhang</searchLink><relatesTo>1</relatesTo><i> zhangmei@ustb.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Mining+%26+Metallurgy%2E+Section+B%3A+Metallurgy%22">Journal of Mining & Metallurgy. Section B: Metallurgy</searchLink>. 2013, Vol. 49 Issue 2, p225-231. 7p. 4 Charts, 10 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Bauxite%22">Bauxite</searchLink><br /><searchLink fieldCode="DE" term="%22Ferric+chloride%22">Ferric chloride</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrochloric+acid%22">Hydrochloric acid</searchLink><br /><searchLink fieldCode="DE" term="%22Calcium+aluminate%22">Calcium aluminate</searchLink><br /><searchLink fieldCode="DE" term="%22Water+purification%22">Water purification</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Bauxite tailings are the main solid wastes in the ore dressing process. The Al2O3 and Fe2O3 contents in bauxite tailings can reach 50% and 13% respectively. The present study proposed a feasible method to use bauxite tailings to prepare polymeric aluminium ferric chloride (PAFC), a new composite inorganic polymer for water purification. Bauxite tailings roasted reacted with hydrochloric acid under air, pickle liquor which mainly contains Fe3+, Al3+ was generated, then calcium aluminate was used to adjust pH value and the basicity of the pickle liquor, the PAFC was subsequently prepared after the polymerization process. The optimal synthesizing parameters for the preparation of PAFC obtained were as follows: the concentration of hydrochloric acid of 24 wt%, ratio of hydrochloric acid to bauxite tailings of 6:1, temperature of 90°C, leaching time of 2.5 hours, ratio of pickle liquor to calcium aluminate of 12:1, polymerization temperature of 90°C and polymerization time of about 3 hours. The basicity of PAFC was higher than 68%, the sum concentration of Al2O3 and Fe2O3 was beyond 12.5%. The results of flocculation tests indicate that the PAFC has a better performance of removing the turbidity of wastewater compared to PAC, and PAFC prepared by bauxite tailings is a kind of high quality flocculants. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Mining & Metallurgy. Section B: Metallurgy is the property of Journal of Mining & Metallurgy and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.2298/JMMB120815007M
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      – Code: eng
        Text: English
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        PageCount: 7
        StartPage: 225
    Subjects:
      – SubjectFull: Bauxite
        Type: general
      – SubjectFull: Ferric chloride
        Type: general
      – SubjectFull: Hydrochloric acid
        Type: general
      – SubjectFull: Calcium aluminate
        Type: general
      – SubjectFull: Water purification
        Type: general
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      – TitleFull: PREPARATION OF POLYMERIC ALUMINIUM FERRIC CHLORIDE FROM BAUXITE TAILINGS.
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            NameFull: M. Guo
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            NameFull: M. Zhang
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            – D: 01
              M: 07
              Text: 2013
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              Y: 2013
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              Value: 49
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            – TitleFull: Journal of Mining & Metallurgy. Section B: Metallurgy
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