BR9907742A - Espessamento de suspensões minerais aquosas - Google Patents

Espessamento de suspensões minerais aquosas

Info

Publication number
BR9907742A
BR9907742A BR9907742-6A BR9907742A BR9907742A BR 9907742 A BR9907742 A BR 9907742A BR 9907742 A BR9907742 A BR 9907742A BR 9907742 A BR9907742 A BR 9907742A
Authority
BR
Brazil
Prior art keywords
polymeric flocculant
suspension
anionic
cationic
solids
Prior art date
Application number
BR9907742-6A
Other languages
English (en)
Inventor
Anthony Peter Allen
Peter Albert Sedders
Original Assignee
Ciba Spec Chem Water Treat Ltd
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
Application filed by Ciba Spec Chem Water Treat Ltd filed Critical Ciba Spec Chem Water Treat Ltd
Publication of BR9907742A publication Critical patent/BR9907742A/pt

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Colloid Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

Patente de Invenção:<B>ESPESSAMENTO DE SUSPENSõES MINERAIS AQUOSAS''<D>.Processo de espessamento de uma suspensão aquosa de sólidos minerais através de sedimentação compreendendo a adição à suspensão de um floculante polimérico ligado em ponte aniónico solúvel em água tendo uma viscosidade intrínseca de pelo menos 5 dl/g e um floculante polimérico catiónico solúvel em água, permitindo-se que os sólidos se assentem sob a gravidade de modo a formar uma fração inferior de underflow contendo uma concentração de sólidos maior do que aquela da suspensão e uma fração superior de overflow contendo uma concentração de sólidos menor do que aquela da suspensão e removendo-se a fração de underflow, caracterizado pelo fato de os floculantes aniónico e catiónico serem adicionados à suspensão como uma composição aquosa formada através de mistura de 1 parte em peso do floculante polimérico catiónico com 2 a 99 partes em peso, do floculante polimérico aniónico e água suficiente para proporcionar uma concentração total de polímero abaixo de 5% por peso e sob condições através das quais a precipitação contra-iónica pode ocorrer e, na composição aquosa, substancialmente todo o floculante polimérico aniónico não é precipitado pelo floculante polimérico catiónico que está em solução. Uma vantagem da invenção é que os floculantes não estão restritos a considerações de compatibilidade e, assim, não é necessário (como na maioria da técnica anterior) usar, por exemplo, floculantes aniónicos isentos de ácido ou catiónicos isentos de base em uma tentativa de minimizar a incompatibilidade e, não é necessário adicionar ácido, sal ou outros aditivos de forma a minimizar a incompatibilidade.
BR9907742-6A 1998-01-23 1999-01-18 Espessamento de suspensões minerais aquosas BR9907742A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9801524.1A GB9801524D0 (en) 1998-01-23 1998-01-23 Thickening of aqueous mineral suspensions
PCT/GB1999/000160 WO1999037589A1 (en) 1998-01-23 1999-01-18 Thickening of aqueous mineral suspensions

Publications (1)

Publication Number Publication Date
BR9907742A true BR9907742A (pt) 2000-10-17

Family

ID=10825824

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9907742-6A BR9907742A (pt) 1998-01-23 1999-01-18 Espessamento de suspensões minerais aquosas

Country Status (11)

Country Link
US (1) US6171506B1 (pt)
EP (1) EP1049653B1 (pt)
AT (1) ATE243660T1 (pt)
AU (1) AU744694B2 (pt)
BR (1) BR9907742A (pt)
CA (1) CA2317636A1 (pt)
DE (1) DE69909051D1 (pt)
ES (1) ES2203065T3 (pt)
GB (1) GB9801524D0 (pt)
PL (1) PL341670A1 (pt)
WO (1) WO1999037589A1 (pt)

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GB9516254D0 (en) * 1995-08-08 1995-10-11 Allied Colloids Ltd Dewatering of aqueous suspensions
EP1063201A4 (en) * 1997-12-15 2001-04-11 Jp Agency Of Ind METHOD AND AGENT FOR REMOVING HARMFUL IONS
US6432321B1 (en) * 2000-09-19 2002-08-13 Baffin, Inc. Elixir for inducing high-speed settlement of precipatates
US6454949B1 (en) * 2000-09-19 2002-09-24 Baffin, Inc. Highly accelerated process for removing contaminants from liquids
US6454963B1 (en) * 2000-09-19 2002-09-24 Baffin, Inc. Elixir for removing metals from wastewater
US6454962B1 (en) * 2000-09-19 2002-09-24 Baffin, Inc. Elixir for removing metals from wastewater
US20070054797A1 (en) * 2003-08-09 2007-03-08 Thomas Ronald J Siliceous clay slurry
US7091148B2 (en) * 2003-08-09 2006-08-15 H.C. Spinks Clay Company, Inc. Silicious clay slurry
US7105466B2 (en) 2003-08-09 2006-09-12 H.C. Spinks Clay Company, Inc. Siliceous clay slurry
AU2004267875B2 (en) 2003-08-29 2010-09-02 Newcastle Innovation Limited Stimulant sensitive flocculation and consolidation
US20050061750A1 (en) * 2003-09-23 2005-03-24 Polymer Ventures, Inc. Methods for the purification of contaminated waters
TW200621653A (en) * 2004-11-25 2006-07-01 Dia Nitrix Co Ltd Method for dewatering of sludge with polymer flocculant and method for flocculation of wastewater with polymer flocculant
ES2259932B1 (es) * 2005-04-13 2008-04-01 Lodos Secos, S.L. Procedimiento de tratamiento de lodos.
CN100429156C (zh) * 2006-01-20 2008-10-29 中国矿业大学 一种循环煤泥水的高效澄清方法
US8585903B2 (en) 2007-02-14 2013-11-19 Winner Water Services, Inc. Water purification
CN101560005B (zh) * 2009-06-01 2011-01-05 湖南师范大学 一种可去除污水中磷的两性高分子絮凝剂
AU2010295189B2 (en) 2009-09-15 2014-03-27 Suncor Energy Inc. Process for flocculating and dewatering oil sand mature fine tailings
WO2011032253A1 (en) 2009-09-15 2011-03-24 Suncor Energy Inc. Process for drying oil sand mature fine tailings
WO2011050440A1 (en) 2009-10-30 2011-05-05 Suncor Energy Inc. Depositing and farming methods for drying oil sand mature fine tailings
US20110147306A1 (en) * 2009-12-18 2011-06-23 General Electric Company Use of cationic coagulant and acrylamide polymer flocculants for separating oil from oily water
CA2939319A1 (en) * 2014-05-12 2015-11-19 Basf Se Process for dewatering mineral tailings by the treatment of these tailings with at least two different polymers of different intrinsic viscosities
CN104671383B (zh) * 2015-02-10 2016-10-05 徐州工程学院 双氰胺﹣乙二醛﹣阳离子醚淀粉复合絮凝剂及其制备方法
CN105948214A (zh) * 2016-06-28 2016-09-21 海安县中丽化工材料有限公司 印染废水用脱色絮凝剂及其制备方法
CN108536979B (zh) * 2018-04-18 2021-08-03 东北大学 一种基于浓密机机理模型的底流浓度预测方法
US10532942B1 (en) * 2018-11-05 2020-01-14 Aicardo Roa-Espinosa Water separation from particulate materials
BE1028692B1 (nl) 2021-03-13 2022-05-04 Eurochem Antwerpen ODDA-Proces voor de productie van stikstofhoudende meststoffen met verbeterde kalkverwijdering

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US3539510A (en) * 1967-06-12 1970-11-10 Dow Chemical Co Flocculation with modified anionic polymers
DE2538281B2 (de) * 1975-08-28 1980-07-17 Basf Ag, 6700 Ludwigshafen Retentions- und Flockungsmittel auf Basis von Polyacrylamiden
ZA818636B (en) * 1980-12-30 1982-10-27 Union Carbide Corp A process for the flocculation of mineral containing slurries
US4599390A (en) * 1983-03-11 1986-07-08 Union Carbide Corporation High molecular weight water-soluble polymers and flocculation method using same
DE202780T1 (de) 1985-04-25 1988-01-14 Allied Colloids Group Ltd., Bradford, Yorkshire Flockungsverfahren.
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US5779910A (en) * 1996-04-08 1998-07-14 Cytec Technology Corp. Enhanced flocculation of mineral slurry with polymer blends

Also Published As

Publication number Publication date
WO1999037589A1 (en) 1999-07-29
EP1049653B1 (en) 2003-06-25
DE69909051D1 (de) 2003-07-31
PL341670A1 (en) 2001-04-23
ES2203065T3 (es) 2004-04-01
AU2174199A (en) 1999-08-09
ATE243660T1 (de) 2003-07-15
AU744694B2 (en) 2002-02-28
CA2317636A1 (en) 1999-07-29
GB9801524D0 (en) 1998-03-25
EP1049653A1 (en) 2000-11-08
US6171506B1 (en) 2001-01-09

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 6A E 7A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1838 DE 28/03/2006.