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公开(公告)号：US10081848B2
公开(公告)日：2018-09-25
申请号：US15025991
申请日：2013-10-02
Applicant: Outotec (Finland) Oy
Inventor： Jochen Güntner , Peter Sturm , Maciej Wrobel , Jörg Hammerschmidt , Ake Holmström , Gunnar Berg
CPC classification number: C22B7/02 , B01D53/64 , B01D53/76 , B01D53/83 , B01D2251/20 , B01D2251/204 , B01D2251/208 , B01D2251/21 , B01D2257/60 , C22B1/24 , C22B15/00 , C22B15/0026 , C22B15/0028 , Y02P10/212
Abstract: A method for the treatment of flue dusts containing arsenic and/or antimony from pyrometallurgical methods, wherein a reducing agent is added to the flue dusts, the flue dusts are heated together with the reducing agent, and volatile components are separated from a slag. The reducing agent is a carbonaceous compound.
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公开(公告)号：US11649523B2
公开(公告)日：2023-05-16
申请号：US16490988
申请日：2017-06-02
Applicant: OUTOTEC (FINLAND) OY
Inventor： Jochen Güntner , Alexandros Charitos , Jörg Hammerschmidt
CPC classification number: C22B11/04 , C22B1/10 , C22B1/2406 , C22B11/02 , C22B15/0013
Abstract: A process for roasting of metal concentrate wherein concentrate particles are fed into a roaster where they are thermally treated at a temperature in the range of 500 and 1200° C. in a fluidized bed to form a calcine. At least parts of the calcine are withdrawn from the roaster together with a gas stream as a solid fraction. Concentrate particles with a diameter at least 50% smaller than the average diameter of the concentrate particles are separated as small particles and/or particles from the gas-solid-fraction are separated in at least one step as small calcine particles and/or particles are gained in another hydrometallurgical step as other particles. Defined particles are pelletized, whereby at least 80% of the pellets feature a diameter of at least 80% of the concentrate particles average diameter. The pellets are fed into the roaster.
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公开(公告)号：US10894999B2
公开(公告)日：2021-01-19
申请号：US15762743
申请日：2016-06-30
Applicant: OUTOTEC (FINLAND) OY
Inventor： Maciej Wrobel , Jochen Güntner , Alexandros Charitos , Jörg Hammerschmidt
Abstract: In a process for producing uranium and/or at least one rare earth element selected from the group consisting of cerium, dysprosium, erbium, europium, gadolinium, holmium, lanthanum, lutetium, neodymium, praseodymium, promethium, samarium, scandium, terbium, thulium, ytterbium and yttrium out of an ore, the ore is mixed with sulphuric acid with a concentration of at least 95 wt.-% to a mixture, wherein the mixture is granulated to pellets. The pellets are fed into at least one fluidized bed fluidized by a fluidizing gas for a thermal treatment at temperatures between 200 and 1000° C. The at least one fluidized bed is developed such that it at least partly surrounds a gas supply tube for a gas or a gas mixture fed into the reactor and the gas or gas mixture is used as a heat transfer medium.
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4.发明申请公开(公告)号：US20160237523A1
公开(公告)日：2016-08-18
申请号：US15025991
申请日：2013-10-02
Applicant: OUTOTEC (FINLAND) OY
Inventor： Jochen Güntner , Peter Sturm , Maciej Wrobel , Jörg Hammerschmidt , Ake Holmström , Gunnar Berg
CPC classification number: C22B7/02 , B01D53/64 , B01D53/76 , B01D53/83 , B01D2251/20 , B01D2251/204 , B01D2251/208 , B01D2251/21 , B01D2257/60 , C22B1/24 , C22B15/00 , C22B15/0026 , C22B15/0028 , Y02P10/212
Abstract: A method for the treatment of flue dusts containing arsenic and/or antimony from pyrometallurgical methods, wherein a reducing agent is added to the flue dusts, the flue dusts are heated together with the reducing agent, and volatile components are separated from a slag. The reducing agent is a carbonaceous compound.
Abstract translation: 一种用于从火法冶金方法处理含有砷和/或锑的烟道尘埃的方法，其中将还原剂加入到烟道灰尘中，烟道灰尘与还原剂一起加热，挥发性组分与炉渣分离。 还原剂是碳质化合物。
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