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从阴极射线管荧光粉废料中回收钇和铕的综合工艺。

Integrated process for the recovery of yttrium and europium from CRT phosphor waste.

作者信息

Forte Federica, Yurramendi Lourdes, Aldana José Luis, Onghena Bieke, Binnemans Koen

机构信息

KU Leuven, Department of Chemistry Celestijnenlaan 200F PO box 2404 3001 Leuven (Heverlee) Belgium

TECNALIA, Energy and Environment Division Mikeletegi Pasealekua 2 E-20009 Donostia-San Sebastián Gipuzkoa Spain.

出版信息

RSC Adv. 2019 Jan 11;9(3):1378-1386. doi: 10.1039/c8ra08158a. eCollection 2019 Jan 9.

DOI:10.1039/c8ra08158a
PMID:35518045
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9059565/
Abstract

An integrated process flow sheet for the recovery of yttrium and europium from waste cathode-ray tube (CRT) phosphors was developed. This flow sheet is based on a sequence of roasting, leaching with organic acids and precipitation steps. Zinc was efficiently removed from the roasted CRT phosphors by leaching with acetic acid, giving access to the rare earth content. Yttrium and europium were quantitatively leached from the residue by a 1 mol L methanesulphonic acid (MSA) solution. Precipitation with oxalic acid gave a mixed Y/Eu oxalate of high purity (>99 wt%). Co-precipitation of zinc was less than 2 wt%.

摘要

开发了一种从废阴极射线管（CRT）荧光粉中回收钇和铕的集成工艺流程。该工艺流程基于一系列焙烧、用有机酸浸出和沉淀步骤。通过用乙酸浸出，可有效地从焙烧后的CRT荧光粉中去除锌，从而使稀土成分得以提取。用1 mol/L甲磺酸（MSA）溶液从残渣中定量浸出钇和铕。用草酸沉淀得到高纯度（>99 wt%）的钇/铕混合草酸盐。锌的共沉淀小于2 wt%。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f67/9059565/d6094ad50dee/c8ra08158a-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f67/9059565/5d82451b5143/c8ra08158a-f1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f67/9059565/6ce8c3cf31de/c8ra08158a-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f67/9059565/27a6a077bb6d/c8ra08158a-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f67/9059565/a235e8a9906e/c8ra08158a-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f67/9059565/178a479230b0/c8ra08158a-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f67/9059565/f8b4bc181e06/c8ra08158a-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f67/9059565/d6094ad50dee/c8ra08158a-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f67/9059565/5d82451b5143/c8ra08158a-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f67/9059565/90893090ceb6/c8ra08158a-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f67/9059565/6ce8c3cf31de/c8ra08158a-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f67/9059565/27a6a077bb6d/c8ra08158a-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f67/9059565/a235e8a9906e/c8ra08158a-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f67/9059565/178a479230b0/c8ra08158a-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f67/9059565/f8b4bc181e06/c8ra08158a-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f67/9059565/d6094ad50dee/c8ra08158a-f8.jpg

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