CA2236043A1 - Polymeres hydroxames dans le cadre du procede bayer - Google Patents

Polymeres hydroxames dans le cadre du procede bayer Download PDF

Info

Publication number
CA2236043A1
CA2236043A1 CA 2236043 CA2236043A CA2236043A1 CA 2236043 A1 CA2236043 A1 CA 2236043A1 CA 2236043 CA2236043 CA 2236043 CA 2236043 A CA2236043 A CA 2236043A CA 2236043 A1 CA2236043 A1 CA 2236043A1
Authority
CA
Canada
Prior art keywords
polymer
process according
flocculant
hydroxamic acid
polymers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA 2236043
Other languages
English (en)
Inventor
Robert W. Cole
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cytec Technology Corp
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/550,908 external-priority patent/US5601726A/en
Application filed by Individual filed Critical Individual
Publication of CA2236043A1 publication Critical patent/CA2236043A1/fr
Abandoned legal-status Critical Current

Links

Landscapes

  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

La vitesse de filtration de la charge primaire de décantation utilisée dans le cadre du procédé Bayer et/ou la floculation dans les phases initiales du circuit de lavage réalisé dans le cadre du procédé Bayer sont améliorées en soumettant le flux de charge de décantation ou le flux de charge des étapes initiales du cycle de lavage au contact a) d'un polymère à poids moléculaire plus faible contenant de l'acide hydroxamique et/ou des groupes de sels hydroxamiques puis b) à un mélange constitué par un polymère anionique et par un deuxième polymère, à poids moléculaire plus élevé, qui contient des groupes acides hydroxamiques.
CA 2236043 1995-10-31 1996-10-28 Polymeres hydroxames dans le cadre du procede bayer Abandoned CA2236043A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/550,908 US5601726A (en) 1994-06-06 1995-10-31 Hydroxameted polymers in the bayer process to reduce solids
US08/550,908 1995-10-31
PCT/US1996/017250 WO1997016378A1 (fr) 1995-10-31 1996-10-28 Extraction de solides en suspension par addition de polymeres hydroxames dans le cadre du procede bayer

Publications (1)

Publication Number Publication Date
CA2236043A1 true CA2236043A1 (fr) 1997-05-09

Family

ID=29406030

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2236043 Abandoned CA2236043A1 (fr) 1995-10-31 1996-10-28 Polymeres hydroxames dans le cadre du procede bayer

Country Status (1)

Country Link
CA (1) CA2236043A1 (fr)

Similar Documents

Publication Publication Date Title
AU689350B2 (en) Blends of hydroxamated polymer emulsions with polyacrylate emulsions
AU699929B2 (en) Removing suspended solids by addition of hydroxamated polymers in the Bayer Process
AU2004215445A1 (en) High molecular weight polymers containing pendent salicyclic acid groups for clarifying bayer process liquors
US5665244A (en) Reduction of impurities in bayer process alumina trihydrate
US5853677A (en) Concentration of solids by flocculating in the Bayer process
US6599489B2 (en) Aluminum trihydrate crystals and improved method for the production thereof
US5951955A (en) Concentration of solids in the Bayer process
JPS63500589A (ja) バイヤ−法液の清澄化
EP0467887A1 (fr) Procede de clarification.
WO1999061129A1 (fr) Combinaison de dextrane, d'amidon et de floculant servant a ameliorer la clarification de la boue rouge
CA2236043A1 (fr) Polymeres hydroxames dans le cadre du procede bayer
IE930677A1 (en) Trihydrate clarification aid for the bayer process
AU712311B2 (en) Concentration of solids in the bayer process
AU691595B2 (en) Use of anionic flocculants and hydroxamated polymers as Bayer Process red mud flocculents
US5711923A (en) Hydroxymethyl diphosphonated polyacrylates for red mud treatment
CA2234917A1 (fr) Concentration de solides dans le procede bayer
AU633305B2 (en) Clarification liquors
CA2234765A1 (fr) Reduction des impuretes dans le trihydrate d'alumine produit par procede bayer

Legal Events

Date Code Title Description
FZDE Dead