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1. WO2020111848 - SYSTEM AND METHOD FOR MELTING ALUMINUM AND RECYCLING BLACK DROSS

Publication Number WO/2020/111848
Publication Date 04.06.2020
International Application No. PCT/KR2019/016655
International Filing Date 29.11.2019
IPC
C22B 21/00 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
21Obtaining aluminium
B01D 1/30 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
1Evaporating
30Accessories for evaporators
B04B 5/10 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
BCENTRIFUGES
5Other centrifuges
10Centrifuges combined with other apparatus, e.g. electrostatic separators; Sets or systems of several centrifuges
CPC
B01D 1/30
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
1Evaporating
30Accessories for evaporators ; ; Constructional details thereof
B04B 5/10
BPERFORMING OPERATIONS; TRANSPORTING
04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
BCENTRIFUGES
5Other centrifuges
10Centrifuges combined with other apparatus, e.g. electrostatic separators; Sets or systems of several centrifuges
C22B 21/0007
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
21Obtaining aluminium
0007Preliminary treatment of ores or scrap or any other metal source
C22B 21/0023
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
21Obtaining aluminium
0015by wet processes
0023from waste materials
Applicants
  • (주)디에스리퀴드 DS LIQUID CO.,LTD. [KR]/[KR]
Inventors
  • 안병두 AHN, Byung Doo
  • 신용국 SIN, Yong Guk
  • 윤수현 YOON, Soo Hyoun
Agents
  • 구현서 KOO, Hyun Seo
  • 이승환 LEE, Seung Hwan
Priority Data
10-2018-015117929.11.2018KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) SYSTEM AND METHOD FOR MELTING ALUMINUM AND RECYCLING BLACK DROSS
(FR) SYSTÈME ET PROCÉDÉ DE FUSION D'ALUMINIUM ET DE RECYCLAGE DE LAITIER NOIR
(KO) 알루미늄 용해 및 블랙 드로스 재활용 시스템 및 방법
Abstract
(EN)
The present invention pertains to a method for recycling black dross, the method comprising: (a) a step in which black dross, generated when aluminum scraps are flux-treated with a flux containing sodium chloride and potassium chloride while being melted in molten aluminum, is crushed and pulverized into aluminum particles and dross particulate powder; (b) a step in which the dross particulate powder is hydrolyzed with water to produce an aqueous solution in which soluble solids including sodium chloride and potassium chloride are dissolved; and (c) a step for precipitating the soluble solids from the aqueous solution by using a plurality of evaporation modules to evaporate the water contained in the aqueous solution, wherein the evaporation modules each induce the evaporation of the water under different environmental conditions so that the sodium chloride and the potassium chloride are precipitated in a different precipitation order and at a different precipitation time by each of the evaporation modules.
(FR)
La présente invention concerne un procédé de recyclage de laitier noir, le procédé comprenant : (a) une étape dans laquelle du laitier noir, généré lorsque des rebuts d'aluminium sont traités par flux avec un flux contenant du chlorure de sodium et du chlorure de potassium tout en étant fondus dans de l'aluminium fondu, est broyé et pulvérisé en particules d'aluminium et en poudre particulaire de laitier; (b) une étape dans laquelle la poudre particulaire de laitier est hydrolysée avec de l'eau pour produire une solution aqueuse dans laquelle des solides solubles comprenant du chlorure de sodium et du chlorure de potassium sont dissous; et (c) une étape de précipitation des solides solubles à partir de la solution aqueuse en utilisant une pluralité de modules d'évaporation pour évaporer l'eau contenue dans la solution aqueuse, les modules d'évaporation induisant chacun l'évaporation de l'eau dans différentes conditions environnementales de sorte que le chlorure de sodium et le chlorure de potassium sont précipités dans un ordre de précipitation différent et à un temps de précipitation différent par chacun des modules d'évaporation.
(KO)
본 발명은, 블랙 드로스 재활용 방법에 관한 것으로서, (a) 알루미늄 용탕에서 알루미늄 스크랩을 용해시킬 때 상기 알루미늄 스크랩이 염화나트륨과 염화칼륨을 포함하는 플럭스에 의해 플럭스 처리되어 발생한 블랙 드로스를 파쇄 및 분쇄하여 알루미늄 알갱이와 드로스 미립자 파우더로 분할하는 단계; (b) 상기 드로스 미립자 파우더를 물과 가수분해 반응시켜, 염화나트륨과 염화칼륨을 포함하는 가용성 고형분이 용해된 수용액을 생성하는 단계; 및 (c) 복수의 증발 모듈들을 각각 이용해 상기 수용액에 포함된 상기 물을 증발시켜 상기 수용액으로부터 상기 가용성 고형분을 석출시키되, 상기 증발 모듈들마다 서로 상이한 환경 조건 하에서 상기 물의 증발을 유도하여, 상기 증발 모듈들마다 서로 상이한 석출 순서 및 석출 시기에 따라 상기 염화나트륨과 상기 염화칼륨을 석출시키는 단계를 포함한다.
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