TREATMENT OF TAILINGS WITH DEIONIZED SILICATE SOLUTIONS

This disclosure relates to a process for treating a tailings stream comprising water, solids, and optionally polyacrylamide. The process involves (a) contacting a gelling agent and polyacrylamide with the tailings stream whereby the solids are entrapped within a gel produced from the gelling agent;...

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Bibliographische Detailangaben
Hauptverfasser:	MOFFETT, ROBERT HARVEY, KRISTJANSDOTTIR, SIGRIDUR SOLEY
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CRACKING HYDROCARBON OILS DISPOSAL OF SOLID WASTE FUELS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS LIME, MAGNESIA LUBRICANTS METALLURGY MINERAL WAXES PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION RECLAMATION OF CONTAMINATED SOIL RECLAMATION OF CONTAMINED SOIL SOIL RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA REFRACTORIES SLAG TECHNICAL GASES CONTAINING CARBON MONOXIDE TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	This disclosure relates to a process for treating a tailings stream comprising water, solids, and optionally polyacrylamide. The process involves (a) contacting a gelling agent and polyacrylamide with the tailings stream whereby the solids are entrapped within a gel produced from the gelling agent; and (b) allowing the gel to strengthen and solidify; wherein the gelling agent comprises a deionized silicate solution having a molar ratio of Si:M of at least 2.6, wherein M is an alkali metal. La présente invention concerne un procédé de traitement d'un courant de résidus comprenant de l'eau, des solides et éventuellement du polyacrylamide. Le procédé implique (a) la mise en contact d'un agent gélifiant et d'un polyacrylamide avec le courant de résidus caractérisé en ce que les solides sont piégés au sein d'un gel produit à partir de l'agent gélifiant ; et (b) laisser le gel se renforcer et solidifier ; l'agent gélifiant comprenant une solution désionisée de silicate possédant un rapport molaire de Si:M d'au moins 2,6, M étant un métal alcalin.