Dead‐End Dynamic Filtration of Highly Concentrated CaCO 3  Suspensions in the Presence of a Dispersant | Zendy

Loginov M. | Zendy; Lebovka N. | Zendy; Larue O. | Zendy; Ding L. H. | Zendy; Vorobiev E. | Zendy

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Dead‐End Dynamic Filtration of Highly Concentrated CaCO 3 Suspensions in the Presence of a Dispersant

Author(s) -

Loginov M.,

Lebovka N.,

Larue O.,

Ding L. H.,

Vorobiev E.

Publication year - 2010

Publication title -

chemical engineering and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.403

H-Index - 81

eISSN - 1521-4125

pISSN - 0930-7516

DOI - 10.1002/ceat.201000073

Subject(s) - dispersant , dewatering , filtration (mathematics) , sodium polyacrylate , materials science , pulp and paper industry , chromatography , chemistry , waste management , composite material , dispersion (optics) , geotechnical engineering , engineering , mathematics , organic chemistry , raw material , statistics , physics , optics

This work discusses dewatering of CaCO 3 suspensions in the presence of a dispersant (sodium polyacrylate). Suspensions were dewatered using the rotating disk‐aided dead‐end dynamic filtration technique. Dewatering efficiency was studied as a function of the dispersant content and operational parameters (disk rotation speed, filtration pressure). Two dewatering modes, with initial ( i ‐dewatering) and delayed ( d ‐dewatering) dispersant addition, were tested. For concentrated suspensions, the d ‐dewatering allowed higher final dryness and better fluidity than i ‐dewatering with minimum dispersant losses in the filtrate.

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