Menetelmä harvinaisten maametallien talteenottamiseksi jätesulfaateista; Förvarande för återvinning av sällsynta jordmetaller från avfallssulfater

Pertti Koukkari; Jarno Mäkinen; Malin Bomberg; Anna Lehtonen; Mona Arnold

Menetelmä harvinaisten maametallien talteenottamiseksi jätesulfaateista; Förvarande för återvinning av sällsynta jordmetaller från avfallssulfater

Translated title of the contribution: Method for recovering rare earth metals from waste sulphates

Pertti Koukkari (Inventor), Jarno Mäkinen (Inventor), Malin Bomberg (Inventor), Anna Lehtonen (Inventor), Mona Arnold (Inventor)

BA5203 Metals and materials recovery

Research output: Patent › Patent

Abstract

The present invention relates to a method for recovering rare earth metals from waste sulphate materials, such as waste gypsum, which is a known secondary resource of rare earth metals and widely present e.g. in areas, where industrial phosphate production takes place. The present invention combines sulphate reduction treatment, such as bioreduction with sulphate reducing bacteria, and magnetic separation, which is based on an exceptionally high magnetic susceptibility of rare earth compounds compared to e.g. calcium compounds in such reductively pretreated gypsum precipitate.

Patent family as of 12.11.2021
CA2930349 AA 20160511 CA20142930349 20141121
CN105765091 A 20160713 CN201480063966 20141121
CN105765091 B 20181009 CN201480063966 20141121
EP3071719 A1 20160928 EP20140863833 20141121
EP3071719 A4 20170809 EP20140863833 20141121
FI125550 B 20151130 FI20130006167 20131122
FI20136167 A 20150523 FI20130006167 20131122
WO15075317 A1 20150528 WO2014FI50891 20141121
ZA201603255 A 20180228 ZA20160003255 20160513

Link to current patent family on right

Translated title of the contribution	Method for recovering rare earth metals from waste sulphates
Original language	Multiple
Patent number	FI20136167
IPC	C02F 101/ 10 A N
Priority date	22/11/13
Publication status	Published - 23 May 2015
MoE publication type	H1 Granted patent

Cite this

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title = "Menetelm{\"a} harvinaisten maametallien talteenottamiseksi j{\"a}tesulfaateista; F{\"o}rvarande f{\"o}r {\aa}tervinning av s{\"a}llsynta jordmetaller fr{\aa}n avfallssulfater",

abstract = "The present invention relates to a method for recovering rare earth metals from waste sulphate materials, such as waste gypsum, which is a known secondary resource of rare earth metals and widely present e.g. in areas, where industrial phosphate production takes place. The present invention combines sulphate reduction treatment, such as bioreduction with sulphate reducing bacteria, and magnetic separation, which is based on an exceptionally high magnetic susceptibility of rare earth compounds compared to e.g. calcium compounds in such reductively pretreated gypsum precipitate.Patent family as of 12.11.2021CA2930349 AA 20160511 CA20142930349 20141121 CN105765091 A 20160713 CN201480063966 20141121 CN105765091 B 20181009 CN201480063966 20141121 EP3071719 A1 20160928 EP20140863833 20141121 EP3071719 A4 20170809 EP20140863833 20141121 FI125550 B 20151130 FI20130006167 20131122 FI20136167 A 20150523 FI20130006167 20131122 WO15075317 A1 20150528 WO2014FI50891 20141121 ZA201603255 A 20180228 ZA20160003255 20160513Link to current patent family on right ",

author = "Pertti Koukkari and Jarno M{\"a}kinen and Malin Bomberg and Anna Lehtonen and Mona Arnold",

year = "2015",

month = may,

day = "23",

language = "Multiple",

type = "Patent",

note = "FI20136167; C02F 101/ 10 A N",

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TY - PAT

T1 - Menetelmä harvinaisten maametallien talteenottamiseksi jätesulfaateista; Förvarande för återvinning av sällsynta jordmetaller från avfallssulfater

AU - Koukkari, Pertti

AU - Mäkinen, Jarno

AU - Bomberg, Malin

AU - Lehtonen, Anna

AU - Arnold, Mona

PY - 2015/5/23

Y1 - 2015/5/23

N2 - The present invention relates to a method for recovering rare earth metals from waste sulphate materials, such as waste gypsum, which is a known secondary resource of rare earth metals and widely present e.g. in areas, where industrial phosphate production takes place. The present invention combines sulphate reduction treatment, such as bioreduction with sulphate reducing bacteria, and magnetic separation, which is based on an exceptionally high magnetic susceptibility of rare earth compounds compared to e.g. calcium compounds in such reductively pretreated gypsum precipitate.Patent family as of 12.11.2021CA2930349 AA 20160511 CA20142930349 20141121 CN105765091 A 20160713 CN201480063966 20141121 CN105765091 B 20181009 CN201480063966 20141121 EP3071719 A1 20160928 EP20140863833 20141121 EP3071719 A4 20170809 EP20140863833 20141121 FI125550 B 20151130 FI20130006167 20131122 FI20136167 A 20150523 FI20130006167 20131122 WO15075317 A1 20150528 WO2014FI50891 20141121 ZA201603255 A 20180228 ZA20160003255 20160513Link to current patent family on right

AB - The present invention relates to a method for recovering rare earth metals from waste sulphate materials, such as waste gypsum, which is a known secondary resource of rare earth metals and widely present e.g. in areas, where industrial phosphate production takes place. The present invention combines sulphate reduction treatment, such as bioreduction with sulphate reducing bacteria, and magnetic separation, which is based on an exceptionally high magnetic susceptibility of rare earth compounds compared to e.g. calcium compounds in such reductively pretreated gypsum precipitate.Patent family as of 12.11.2021CA2930349 AA 20160511 CA20142930349 20141121 CN105765091 A 20160713 CN201480063966 20141121 CN105765091 B 20181009 CN201480063966 20141121 EP3071719 A1 20160928 EP20140863833 20141121 EP3071719 A4 20170809 EP20140863833 20141121 FI125550 B 20151130 FI20130006167 20131122 FI20136167 A 20150523 FI20130006167 20131122 WO15075317 A1 20150528 WO2014FI50891 20141121 ZA201603255 A 20180228 ZA20160003255 20160513Link to current patent family on right

UR - https://worldwide.espacenet.com/patent/search/family/053058781/publication/FI125997B?q=FI125997

M3 - Patent

M1 - FI20136167

ER -

Menetelmä harvinaisten maametallien talteenottamiseksi jätesulfaateista; Förvarande för återvinning av sällsynta jordmetaller från avfallssulfater

Abstract

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