Use of hydroxamated polymers to alter bayer process scale

Details Use of hydroxamated polymers to alter bayer process scale Use of hydroxamated polymers to alter bayer process scale

C - Chemistry, Metallurgy

01

F

C01F 7/47 (2006.01) B01D 21/01 (2006.01) C01F 7/06 (2006.01) C02F 5/12 (2006.01)

Patent

CA 2252694

The processing of bauxite in the Bayer Process results in the formation of titanaceous, siliceous, and other scale on equipment and apparatus such that a great deal of time and effort is spent in order to maintain the process at its height efficiency by reducing or eliminating the same. The scale is treated, reduced, altered, etc., according to the present invention by the use of hydroxamated polymers having weight average molecular weights ranging from about 1,000 to less than about 10,000.

Le traitement de la bauxite effectué dans le cadre du procédé Bayer entraîne la formation de dépôts de titanate, de silicate et autre sur les équipements et les appareils, la réduction ou l'élimination de ces dépôts nécessitant beaucoup de temps et d'efforts si l'on souhaite maintenir le procédé à son degré d'efficacité élevé. Les dépôts sont traités, réduits, modifiés, etc. selon le procédé de l'invention à l'aide de polymères hydroxamatés dont la masse moléculaire moyenne est comprise entre 1000 et une valeur inférieure à environ 10.000.

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