METHOD AND APPARATUS FOR TREATING TAILINGS USING AN AC VOLTAGE WITH A DC OFFSET

There is a method of facilitating the consolidation of fine tailings through the application of an electrical current. The fine tailings include a combination of at least some water and some clay particles. Electrodes are placed into contact with the fine tailings. An AC voltage with a DC offset is...

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Main Authors GARCIA, PAUL, MICAK, JAMES, PARROTT, ROBERT C, BEATTIE, BRUCE S, HARRIS, BEN, KIMZEY, DOUG
Format Patent
LanguageEnglish
French
Published 08.01.2019
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Abstract There is a method of facilitating the consolidation of fine tailings through the application of an electrical current. The fine tailings include a combination of at least some water and some clay particles. Electrodes are placed into contact with the fine tailings. An AC voltage with a DC offset is applied to the electrodes to separate water from the clay particles and to induce movement of the separated water to a collection area. The separated clay particles can consolidate more readily than unseparated clay particles. In an embodiment, the fine tailings are mixed fine oil sands extraction tailings which include residual hydrocarbons. In an embodiment, the application of an AC voltage with a DC offset across the electrodes includes applying an AC voltage of about 1 V/cm and a DC offset of about 1/2 V/cm. Linvention concerne un procédé permettant de faciliter la consolidation des résidus fins par lapplication dun courant électrique. Les résidus fins sont constitués dune combinaison comprenant au moins de leau et des particules dargile. Des électrodes entrent en contact avec les résidus fins. Une tension CA avec un décalage CC est appliquée sur les électrodes pour séparer leau des particules dargile et pour induire le mouvement de leau séparée à une zone de collecte. Les particules dargile séparées peuvent se consolider plus rapidement que les particules dargile non séparées. Selon un mode de réalisation, les résidus fins sont des résidus fins dextraction de sables bitumineux mélangés qui comportent des hydrocarbures résiduels. Selon un autre mode de réalisation, lapplication dune tension CA avec un décalage CC par le biais des électrodes comprend lapplication dune tension CA denviron 1 V/cm et dun décalage CC denviron ½ V/cm.
AbstractList There is a method of facilitating the consolidation of fine tailings through the application of an electrical current. The fine tailings include a combination of at least some water and some clay particles. Electrodes are placed into contact with the fine tailings. An AC voltage with a DC offset is applied to the electrodes to separate water from the clay particles and to induce movement of the separated water to a collection area. The separated clay particles can consolidate more readily than unseparated clay particles. In an embodiment, the fine tailings are mixed fine oil sands extraction tailings which include residual hydrocarbons. In an embodiment, the application of an AC voltage with a DC offset across the electrodes includes applying an AC voltage of about 1 V/cm and a DC offset of about 1/2 V/cm. Linvention concerne un procédé permettant de faciliter la consolidation des résidus fins par lapplication dun courant électrique. Les résidus fins sont constitués dune combinaison comprenant au moins de leau et des particules dargile. Des électrodes entrent en contact avec les résidus fins. Une tension CA avec un décalage CC est appliquée sur les électrodes pour séparer leau des particules dargile et pour induire le mouvement de leau séparée à une zone de collecte. Les particules dargile séparées peuvent se consolider plus rapidement que les particules dargile non séparées. Selon un mode de réalisation, les résidus fins sont des résidus fins dextraction de sables bitumineux mélangés qui comportent des hydrocarbures résiduels. Selon un autre mode de réalisation, lapplication dune tension CA avec un décalage CC par le biais des électrodes comprend lapplication dune tension CA denviron 1 V/cm et dun décalage CC denviron ½ V/cm.
Author GARCIA, PAUL
BEATTIE, BRUCE S
PARROTT, ROBERT C
MICAK, JAMES
KIMZEY, DOUG
HARRIS, BEN
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– fullname: BEATTIE, BRUCE S
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– fullname: KIMZEY, DOUG
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DocumentTitleAlternate PROCEDE ET APPAREIL POUR TRAITER DES RESIDUS AU MOYEN D'UNE TENSION CA AVEC UN DECALAGE CC
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Snippet There is a method of facilitating the consolidation of fine tailings through the application of an electrical current. The fine tailings include a combination...
SourceID epo
SourceType Open Access Repository
SubjectTerms CHEMISTRY
MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS
METALLURGY
PERFORMING OPERATIONS
SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS
SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Title METHOD AND APPARATUS FOR TREATING TAILINGS USING AN AC VOLTAGE WITH A DC OFFSET
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