Number of the records: 1

Method of Extraction of Europium(III) and/or Yttrium(III) Ions from Concentrate of Luminophore Dust or Sludge

SYSNO ASEP	0337504
Document Type	P - Patent
R&D Document Type	Patent or other outcome protected by special legislation
Title	Method of Extraction of Europium(III) and/or Yttrium(III) Ions from Concentrate of Luminophore Dust or Sludge
Title	Způsob extrakce iontů europitých a yttritých z koncentrátu luminoforového prachu či kalu
Author(s)	Gruber, Václav (UCHP-M)_{RID, SAI}
Year of issue	2009
Possible third party use of the result	A - Pro využití výsledku jiným subjektem je vždy nutné nabytí licence
Royalty requested	A - Poskytovatel licence požaduje licenční poplatek
Patent no. or utility model no. or industrial design no.	EP1817437
Date of the patent acceptance	25.03.2009
Name of the patent owner	Ústav chemických procesů AV ČR, v. v. i
Current use	A - Pouze udělený (dosud nevyužívaný) patent nebo patent využívaný jeho vlastníkem
Language	eng - English
Country	CZ - Czech Republic
Keywords	selective extraction ; recycling technologies ; ecological reprocessing
Subject RIV	CI - Industrial Chemistry, Chemical Engineering
R&D Projects	FI-IM5/075 GA MPO - Ministry of Industry and Trade (MPO)
CEZ	AV0Z40720504 - UCHP-M (2005-2011)
Annotation	The invention relates to a method of selective extraction of europium(III) and/or yttrium(III) from luminophore dust and sludge, the major components of which are oxides and sulphides of zinc, cadmium, yttrium and europium. From the concentrate of luminophore dust or sludge an aqueous solution is prepared and is subsequently contacted with an extraction agent, which is alkylphosphoric or dialkylphosphoric acid, either pure or diluted with organic solvent. The reaction equilibrium is strongly dependent on equilibrium concentration of the free acid in the aqueous phase of the reaction. After separating aqueous and organic phase after the extraction the europium(III) and yttrium(III) ions are recovered from the organic phase.
Workplace	Institute of Chemical Process Fundamentals
Contact	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Year of Publishing	2011

Number of the records: 1