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Journal articles on the topic 'Bayer liquors'

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Published: 4 June 2021

Last updated: 6 February 2022

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1

Raiguel, Stijn, Wim Dehaen, and Koen Binnemans. "Extraction of gallium from simulated Bayer process liquor by Kelex 100 dissolved in ionic liquids." Dalton Transactions 49, no. 11 (2020): 3532–44. http://dx.doi.org/10.1039/c9dt04623b.

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2

Königsberger, Erich, Sebastian Bochmann, Peter M. May, and Glenn Hefter. "Thermodynamics of impurities in hydrometallurgical processes." Pure and Applied Chemistry 83, no. 5 (April 7, 2011): 1075–84. http://dx.doi.org/10.1351/pac-con-11-02-07.

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Impurities in hydrometallurgical process liquors frequently impact on product quality and yield, change physicochemical properties of the liquor, and form hard scale on heat exchangers and condensers. Organic compounds are of particular concern especially in the Bayer process, where impurities build up in the recycled liquor if not controlled. Depending on the redox state of the liquor, such compounds can undergo a variety of complex chemical reactions, including the formation of volatiles that can potentially cause environmental, health, and safety concerns. To aid in the development of appropriate control strategies, robust thermodynamic models for multicomponent aqueous systems containing large numbers of electrolytes and nonelectrolytes are required. Applications of thermodynamic models are discussed that range from the partitioning of volatile compounds in flash trains to the prediction of mixing properties of organic impurities with major Bayer liquor components.

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3

Jones, F., J. B. Farrow, and W. van Bronswijk. "Flocculation of haematite in synthetic Bayer liquors." Colloids and Surfaces A: Physicochemical and Engineering Aspects 135, no. 1-3 (April 1998): 183–92. http://dx.doi.org/10.1016/s0927-7757(97)00240-9.

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4

Sipos, P., P. M. May, G. T. Heffer, and I. Kron. "The ultraviolet absorption spectra of synthetic bayer liquors." Journal of the Chemical Society, Chemical Communications, no. 20 (1994): 2355. http://dx.doi.org/10.1039/c39940002355.

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5

Lee, Sung Oh, Kyoung Hun Jung, Chi Jung Oh, Yeon Ho Lee, Tam Tran, and Myong Jun Kim. "Precipitation of fine aluminium hydroxide from Bayer liquors." Hydrometallurgy 98, no. 1-2 (August 2009): 156–61. http://dx.doi.org/10.1016/j.hydromet.2009.04.014.

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6

Prestidge, Clive A., Igor Ametov, and Jonas Addai-Mensah. "Rheological investigations of gibbsite particles in synthetic Bayer liquors." Colloids and Surfaces A: Physicochemical and Engineering Aspects 157, no. 1-3 (October 1999): 137–45. http://dx.doi.org/10.1016/s0927-7757(98)00774-2.

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7

Königsberger, Erich, Gunnar Eriksson, Peter M. May, and Glenn Hefter. "Comprehensive Model of Synthetic Bayer Liquors. Part 1. Overview." Industrial & Engineering Chemistry Research 44, no. 15 (July 2005): 5805–14. http://dx.doi.org/10.1021/ie050024k.

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8

Dorin, R., and E. J. Frazer. "The electrodeposition of gallium from synthetic Bayer-process liquors." Journal of Applied Electrochemistry 18, no. 1 (January 1988): 134–41. http://dx.doi.org/10.1007/bf01016217.

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9

Riveros, P. A. "Recovery of gallium from Bayer liquors with an amidoxime resin." Hydrometallurgy 25, no. 1 (January 1990): 1–18. http://dx.doi.org/10.1016/0304-386x(90)90060-f.

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10

Königsberger, Erich, Lan-Chi Königsberger, Glenn Hefter, and Peter M. May. "Zdanovskii’s Rule and Isopiestic Measurements Applied to Synthetic Bayer Liquors." Journal of Solution Chemistry 36, no. 11-12 (October 23, 2007): 1619–34. http://dx.doi.org/10.1007/s10953-007-9208-4.

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11

Bennett, Frederick, Peter Crew, and Jennifer Muller. "A GMDH Approach to Modelling Gibbsite Solubility in Bayer Process Liquors." International Journal of Molecular Sciences 5, no. 3 (February 20, 2004): 101–9. http://dx.doi.org/10.3390/i5030101.

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12

Lu, Q., M. M. Stack, and C. R. Wiseman. "Corrosion behaviour and characterisation of iron in hot flowing Bayer liquors." Materials and Corrosion 51, no. 10 (October 2000): 705–11. http://dx.doi.org/10.1002/1521-4176(200010)51:10<705::aid-maco705>3.0.co;2-n.

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13

Zhang, Ye, Rui Xu, Honghu Tang, Li Wang, and Wei Sun. "A review on approaches for hazardous organics removal from Bayer liquors." Journal of Hazardous Materials 397 (October 2020): 122772. http://dx.doi.org/10.1016/j.jhazmat.2020.122772.

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14

Addai-Mensah, Jonas, and John Ralston. "The Influence of Interfacial Structuring on Gibbsite Interactions in Synthetic Bayer Liquors." Journal of Colloid and Interface Science 215, no. 1 (July 1999): 124–30. http://dx.doi.org/10.1006/jcis.1999.6237.

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15

Cardwell, T. J., and W. R. Laughton. "Analysis of fluoride, acetate and formate in Bayer liquors by ion chromatography." Journal of Chromatography A 678, no. 2 (September 1994): 364–69. http://dx.doi.org/10.1016/0021-9673(94)80485-0.

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16

Nortier, Patrice, Pierre Chagnon, and Alison E. Lewis. "Modelling the solubility in Bayer liquors: A critical review and new models." Chemical Engineering Science 66, no. 12 (June 2011): 2596–605. http://dx.doi.org/10.1016/j.ces.2011.03.004.

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17

Freij, Sawsan J., and Gordon M. Parkinson. "Surface morphology and crystal growth mechanism of gibbsite in industrial Bayer liquors." Hydrometallurgy 78, no. 3-4 (August 2005): 246–55. http://dx.doi.org/10.1016/j.hydromet.2005.04.001.

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18

Power, Greg, Joanne S. C. Loh, Johannes E. Wajon, Francesco Busetti, and Cynthia Joll. "A review of the determination of organic compounds in Bayer process liquors." Analytica Chimica Acta 689, no. 1 (March 2011): 8–21. http://dx.doi.org/10.1016/j.aca.2011.01.040.

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19

Zhang, Bin, Ke-chao Zhou, and Qi-yuan Chen. "Influences of seed size and number on agglomeration in synthetic bayer liquors." Journal of Central South University of Technology 13, no. 5 (October 2006): 511–14. http://dx.doi.org/10.1007/s11771-006-0078-5.

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20

LI, Xiao-bin, Li YAN, Dong-feng ZHAO, Qiu-sheng ZHOU, Gui-hua LIU, Zhi-hong PENG, Shuai-shuai YANG, and Tian-gui QI. "Relationship between Al(OH)3 solubility and particle size in synthetic Bayer liquors." Transactions of Nonferrous Metals Society of China 23, no. 5 (May 2013): 1472–79. http://dx.doi.org/10.1016/s1003-6326(13)62619-9.

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21

Couperthwaite, Sara J., Sujung Han, Talitha Santini, Gurkiran Kaur, Dean W. Johnstone, Graeme J. Millar, and Ray L. Frost. "Bauxite residue neutralisation precipitate stability in acidic environments." Environmental Chemistry 10, no. 6 (2013): 455. http://dx.doi.org/10.1071/en13048.

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Environmental context Although land remediation programs for bauxite residues aim at vegetation coverage, the stability of compounds in the residues with acids produced by the vegetation has not been investigated. We show that, despite the instability of caustic components in the residues (negative effects on plant development), this instability actually assists in neutralising acidic soils. These results further affirm the suitability and sustainability of current land remediation programs for bauxite residues in terms of minimising acidic soil formation. Abstract This investigation used a combination of techniques, such as X-ray diffraction, inductively coupled plasma optical emission spectroscopy and infrared spectroscopy, to determine the dissolution mechanisms of the Bayer precipitate and the associated rate of dissolution in acetic, citric and oxalic acid environments. The Bayer precipitate is a mixture of hydrotalcite, calcium carbonate and sodium chloride that forms during the seawater neutralisation of Bayer liquors (waste residue of the alumina industry). The dissolution rate of a Bayer precipitate is found to be dependent on (1) the strength of the organic acid and (2) the number of donating H+ ions. The dissolution mechanism for a Bayer precipitate consists of several steps involving: (1) the dissolution of CaCO3, (2) formation of whewellite (calcium oxalate) when oxalic acid is used and (3) multiple dissolution steps for hydrotalcite that are highly dependent on the pH of solution. The decomposition of the Al–OH hydrotalcite layers resulted in the immediate formation of Al(OH)3, which is stable until the pH decreases below 5.5. This investigation has found that the Bayer precipitate is stable across a wide pH range in the presence of common organic acids found in the rhizosphere, and that initial decomposition steps are likely to be beneficial in supporting plant growth through the release of nutrients such as Ca2+ and Mg2+.

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22

Dobra, Gheorghe, Santiago Garcia-Granda, Sorin Iliev, Lucian Cotet, Hulka Iosif, Petru Negrea, Narcis Duteanu, Alina Boiangiu, and Laurentiu Filipescu. "Aluminum Hydroxide Impurities Occlusions and Contamination Sources." Revista de Chimie 71, no. 9 (September 5, 2020): 65–76. http://dx.doi.org/10.37358/rc.20.9.8318.

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This paper is reporting the data concerning impurities occlusion in the dried, milled and classified aluminum hydroxide, the sources of contamination and the ways to control the purity of classified aluminum hydroxide as raw material for special aluminas. Mainly, all the micronic size particles, floating in the super-saturated Bayer liquors, are potential sources of occluded impurities in the aluminum hydroxide particles. There are several mechanisms for embedding the impurities in crystalline substances. Of these, most probable ones in the Bayer alumina process are: a) occlusion of the spent liquor drops containing impurities inside the polycrystalline aluminum hydroxide congregates; b) hetero-nucleation of aluminum hydroxide on the surface of particles or colloids containing one or more impurities (the foreign particles are seized inside a crystals or inside of a crystalline multi-particulate association); c) incorporation of available ions or molecule reactive fragments in the poor crystalline structures of aluminum hydroxide after nucleation, during different growth stages of all already aggregated particles, under certain super-saturations. d) building up bridges between the scanty aggregated particles or filling the inside hollows of these aggregates with new quickly crystallized material, including the particulate impurities, mainly, during large fluctuations of the super-saturation. Using scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy EDS (Apollo SSD detector, EDAX), the contributions of each of these mechanisms can be investigated simply and assumed from the collected data. It was shown that well crystallized phases originating directly from bauxite (like the aluminum substituted goethite and substituted hematite, rutile or quartz), as well as the well as the crystallized new born phases during specific Bayer reactions (like cancrinite, are not promoting directly the impurities occlusion. Poor crystalline phases (like sodalite and katoite or other secondary phases and their micronic size fragments are really sustaining impurities occlusion through all the acknowledged mechanisms.

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23

Jones, F., J. B. Farrow, and W. van Bronswijk. "Effect of caustic and carbonate on the flocculation of haematite in synthetic Bayer liquors." Colloids and Surfaces A: Physicochemical and Engineering Aspects 142, no. 1 (November 1998): 65–73. http://dx.doi.org/10.1016/s0927-7757(98)00405-1.

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24

Li, Jun, Clive A. Prestidge, and Jonas Addai-Mensah. "Secondary nucleation of gibbsite crystals from synthetic Bayer liquors: effect of alkali metal ions." Journal of Crystal Growth 219, no. 4 (November 2000): 451–64. http://dx.doi.org/10.1016/s0022-0248(00)00734-x.

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25

Addai-Mensah, J., C. A. Prestidge, and J. Ralston. "Interparticle forces, interfacial structure development and agglomeration of gibbsite particles in synthetic Bayer liquors." Minerals Engineering 12, no. 6 (June 1999): 655–69. http://dx.doi.org/10.1016/s0892-6875(99)00050-3.

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26

Jackson, P. E. "Analysis of oxalate in Bayer liquors: a comparison of ion chromatography and capillary electrophoresis." Journal of Chromatography A 693, no. 1 (February 1995): 155–61. http://dx.doi.org/10.1016/0021-9673(94)01104-m.

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27

Rossiter, D. S., P. D. Fawell, D. Ilievski, and G. M. Parkinson. "Investigation of the unseeded nucleation of gibbsite, Al(OH)3, from synthetic bayer liquors." Journal of Crystal Growth 191, no. 3 (July 1998): 525–36. http://dx.doi.org/10.1016/s0022-0248(98)00110-9.

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28

Chester, R., F. Jones, M. Loan, A. Oliveira, and W. R. Richmond. "The dissolution behaviour of titanium oxide phases in synthetic Bayer liquors at 90 °C." Hydrometallurgy 96, no. 3 (April 2009): 215–22. http://dx.doi.org/10.1016/j.hydromet.2008.10.009.

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29

Seyssiecq, I., S. Veesler, R. Boistelle, and J. M. Lamérant. "Agglomeration of gibbsite Al(OH)3 crystals in Bayer liquors. Influence of the process parameters." Chemical Engineering Science 53, no. 12 (June 1998): 2177–85. http://dx.doi.org/10.1016/s0009-2509(98)00032-3.

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30

Stuart, A. D., T. Tran, and D. A. J. Swinkels. "The oxidative removal of organics in bayer liquors from alumina plants using manganese dioxide ore." Hydrometallurgy 19, no. 1 (October 1987): 37–49. http://dx.doi.org/10.1016/0304-386x(87)90040-5.

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31

Zhong, Fu-jin, Xiao-qing Chen, Shu-chao Zhang, and Yue-ping Li. "Organic acids and inorganic anions in Bayer liquors by ion chromatography after solid-phase extraction." Journal of Central South University of Technology 14, no. 2 (April 2007): 191–95. http://dx.doi.org/10.1007/s11771-007-0038-8.

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32

Xiao, Jian Bo. "Identification of Organic Acids and Quantification of Dicarboxylic Acids in Bayer Process Liquors by GC–MS." Chromatographia 65, no. 3-4 (December 21, 2006): 185–90. http://dx.doi.org/10.1365/s10337-006-0135-0.

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33

Hind, A. R., S. K. Bhargava, and S. C. Grocott. "Quantitation of alkyltrimethylammonium bromides in Bayer process liquors by gas chromatography and gas chromatography-mass spectrometry." Journal of Chromatography A 765, no. 2 (March 1997): 287–93. http://dx.doi.org/10.1016/s0021-9673(96)00922-3.

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34

Xiao, J. B., X. Y. Jiang, and X. Q. Chen. "Identification of Organic Acids in Bayer Liquors by GC-MS: A Comparison Using Butylation and Methylation." Journal of Chromatographic Science 45, no. 4 (April 1, 2007): 183–88. http://dx.doi.org/10.1093/chromsci/45.4.183.

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35

Königsberger, Erich, Simon Bevis, Glenn Hefter, and Peter M. May. "Comprehensive Model of Synthetic Bayer Liquors. Part 2. Densities of Alkaline Aluminate Solutions to 90 °C." Journal of Chemical & Engineering Data 50, no. 4 (July 2005): 1270–76. http://dx.doi.org/10.1021/je0500126.

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36

Whelan, Thelma J., G. S. Kamali Kannangara, and Michael A. Wilson. "Increased Resolution in High-Performance Liquid Chromatograph Spectra of High-Molecular-Weight Organic Components of Bayer Liquors." Industrial & Engineering Chemistry Research 42, no. 26 (December 2003): 6673–81. http://dx.doi.org/10.1021/ie0303754.

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37

Chen, Qi Yuan, Jian Bo Xiao, and Xiao Qing Chen. "Rapid determination of organic acids in Bayer liquors by high-performance liquid chromatography after solid-phase extraction." Minerals Engineering 19, no. 14 (November 2006): 1446–51. http://dx.doi.org/10.1016/j.mineng.2006.03.015.

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38

PALMER, S., R. FROST, and T. NGUYEN. "Hydrotalcites and their role in coordination of anions in Bayer liquors: Anion binding in layered double hydroxides." Coordination Chemistry Reviews 253, no. 1-2 (January 2009): 250–67. http://dx.doi.org/10.1016/j.ccr.2008.01.012.

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39

Königsberger, Erich. "Partitioning of Volatile Compounds among Process Liquors, Steam, and Condensates: Thermodynamic Simulations with Applications to the Bayer Process." Industrial & Engineering Chemistry Research 53, no. 1 (December 24, 2013): 316–22. http://dx.doi.org/10.1021/ie402335x.

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40

Harris, Damien R., Roland I. Keir, Clive A. Prestidge, and John C. Thomas. "A dynamic light scattering investigation of nucleation and growth in supersaturated alkaline sodium aluminate solutions (synthetic Bayer liquors)." Colloids and Surfaces A: Physicochemical and Engineering Aspects 154, no. 3 (August 1999): 343–52. http://dx.doi.org/10.1016/s0927-7757(98)00589-5.

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41

Xiao, Jian Bo, Xiao Qing Chen, Xin Yu Jiang, and Sheng De Wu. "Rapid Separation and Analysis of Six Organic Acids in Bayer Liquors by RP-HPLC after Solid-Phase Extraction." Annali di Chimica 96, no. 5-6 (June 2006): 347–54. http://dx.doi.org/10.1002/adic.200690036.

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42

Königsberger, Erich, Peter M. May, and Glenn Hefter. "Comprehensive Model of Synthetic Bayer Liquors. Part 3. Sodium Aluminate Solutions and the Solubility of Gibbsite and Boehmite." Monatshefte für Chemie - Chemical Monthly 137, no. 9 (September 2006): 1139–49. http://dx.doi.org/10.1007/s00706-006-0526-9.

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43

Xiao, J. B., X. Y. Jiang, and X. Q. Chen. "Separation and determination of organic acids and inorganic anions in Bayer liquors by ion chromatography after solid-phase extraction." Journal of Analytical Chemistry 62, no. 8 (August 2007): 756–60. http://dx.doi.org/10.1134/s1061934807080114.

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44

Kekesi, Tamas. "Gallium extraction from synthetic Bayer liquors using Kelex 100-kerosene, the effect of loading and stripping conditions on selectivity." Hydrometallurgy 88, no. 1-4 (August 2007): 170–79. http://dx.doi.org/10.1016/j.hydromet.2007.04.006.

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45

D Franzmann, Peter, Rebecca B Hawkes, Christina M Haddad, and Jason J Plumb. "Mining with microbes." Microbiology Australia 28, no. 3 (2007): 124. http://dx.doi.org/10.1071/ma07124.

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As early as 166 AD, biotechnology was applied to the extraction of metals from ores in the copper mines of Cyprus, and in 1928 in Kennecott, USA, ?dump leaching? ? the use of microorganisms to extract copper from low grade mine waste material ? was conducted on commercial scale. It was not until 1947 that Colmer and Hinkle 1 demonstrated the role that microorganisms play in the oxidation of mineral sulfides for the release of metals in solution. Currently, 20% of annual global copper production results largely through the bioleaching of chalcocite (Cu2S). Many other metals, such as gold, cobalt, nickel, uranium and zinc are also being produced through bioleaching technology. Today, biotechnology is used to improve the environmental outcomes in a range of mining operations such as the use of sulfate-reducing bioreactors for the treatment of acid mine drainage (AMD), and heterotrophic and chemolithotrophic biofilm reactors for the degradation of cyanide products from gold processing and for the destruction of organic wastes such as oxalate from Bayer liquors during alumina production.

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46

Nortier, Patrice, Pierre Chagnon, and Alison E. Lewis. "Corrigendum to “Modelling the solubility in Bayer liquors: A critical review and new models” [Chem. Eng. Sci. 66 (2011) 2596–2605]." Chemical Engineering Science 90 (March 2013): 9. http://dx.doi.org/10.1016/j.ces.2012.12.021.

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47

Seyssiecq, I., S. Veesler, and R. Boistelle. "A non-immersed induction conductivity system for controlling supersaturation in corrosive media: the case of gibbsite crystals agglomeration in Bayer liquors." Journal of Crystal Growth 169, no. 1 (November 1996): 124–28. http://dx.doi.org/10.1016/0022-0248(96)00313-2.

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48

Liu, Yang, Yang Li, Feng-shan Zhou, Ying-mo Hu, and Yi-he Zhang. "Sulfur Fixation by Chemically Modified Red Mud Samples Containing Inorganic Additives: A Parametric Study." Advances in Materials Science and Engineering 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/9817969.

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Sulfur retention ability of Bayer red mud from alumina plant was investigated. Bayer red mud modified by fusel salt and waste mother liquor of sodium ferrocyanide as the main sulfur fixation agent and the calcium based natural mineral materials as servicing additives; the experimental results showed the following: (1) Through 10 wt% waste mother liquor of sodium ferrocyanide modifying Bayer red mud, sulfur fixation rate can increase by 13 wt%. (2) Magnesium oxide can obviously improve the sulfur fixation performance of Bayer red mud and up to a maximum sulfur fixation rate of 47 wt% at adding 1 wt% magnesium oxide. (3) Dolomite enhanced the sulfur fixation performances with the sulfur fixation rate of 68 wt% in optimized condition. (4) Vermiculite dust reduced sulfur dioxide during the fixed-sulfur process of modified Bayer red mud, and the desulphurization ration could reach up to a maximum 76 wt% at 950°C. (5) An advanced three-component sulfur fixation agent was investigated, in which the optimized mass ratio of modified Bayer red mud, dolomite, and vermiculite dust was 70 : 28 : 2 in order, and its sulfur fixation efficiency has reached to a maximum 87 wt% under its 20 wt% dosage in the coal.

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49

Müller-Steinhagen, H. "Determining silica solubility in bayer process liquor." JOM 50, no. 11 (November 1998): 44–49. http://dx.doi.org/10.1007/s11837-998-0286-6.

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50

Mazloumi, Mahyar, Razieh Khalifehzadeh, S. K. Sadrnezhaad, and Hamed Arami. "Alumina Nanopowder Production from Synthetic Bayer Liquor." Journal of the American Ceramic Society 89, no. 12 (December 2006): 3654–57. http://dx.doi.org/10.1111/j.1551-2916.2006.01285.x.

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