Metal Recycling Impurity Removal PGM Recovery - enviolet.com
Metal Recycling Impurity Removal PGM Recovery - enviolet.com
Metal Recycling Impurity Removal PGM Recovery - enviolet.com
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e n v i o l e t G m b H<br />
P G M R e c o v e r y<br />
A M R<br />
M e t a l R e c y c l i n g<br />
I m p u r i t y R e m o v a l
N e u e W e g e d e r K u p f e r - u n d N i c k e l r ü c k g e w i n n u n g<br />
N e w w a y s o f c o p p e r a n d n i c k e l r e c y c l i n g<br />
Kupfer und Nickel sind die mit am häufigsten eingesetzten <strong>Metal</strong>le bei der Kunststoffgalvanisierung,<br />
der Leiterplattenherstellung und der konventionellen Oberflächenveredelung. Über Jahre<br />
hinweg wurden zur Rückgewinnung beider <strong>Metal</strong>le nur Technologien angeboten, die wie eine Niere<br />
direkt am Elektrolyten arbeiten. Üblicherweise wurden Membranelektrolysen oder Trommelelektrolyse<br />
eingesetzt, um die <strong>Metal</strong>le aus den verbrauchten Elektrolyten direkt, oder über den Umweg<br />
der Fällung und Wiederauflösung zurück zugewinnen.<br />
Enviolet beschreitet hier neue Wege. Neben der Einhaltung der strengen Abwasserüberwachungswerte<br />
werden zusätzlich die <strong>Metal</strong>le in einer Reinheit von bis zu 99,5% zurückgewonnen. Die<br />
abgeschiedenen <strong>Metal</strong>le können direkt verkauft werden und erzielen einen Verkaufswert von etwa<br />
95 % des LME Wertes. Enviolet erreicht dies durch die Kombination von intelligenter Spültechnik,<br />
selektiven Ionenaustauscherverfahren und einer Hochleistungselektrolyse, die 50 bis 500 kg <strong>Metal</strong>l<br />
am Tag abscheiden kann.<br />
Nickel and copper is used widely in the printed circuit board, plating on plastics and general metal<br />
finishing industries. For many years various technologies have been promoted to recover both<br />
nickel and copper at source. Dragout rinses are operated with electrolytic cells to recover the metal<br />
plated either on a reticulated or spinning cathode, alternatively recovery in a barrel electrowinning<br />
system have been considered.<br />
Other alternatives such as producing a mono hydroxide sludge of the base metal have also been<br />
explored and implemented in the past, but in this case the value recovered is only the cost reduction<br />
foe sludge disposal, and not extracting the real value of the waste metal produced by the plating<br />
operation.<br />
Enviolet has developed a stand-alone technology that addresses not only the issue of meeting<br />
low discharge limits, but also recovers copper and nickel with a metal purity of 99.9% and 99.5%<br />
respectively. The recovered metal requires no additional purification steps and can be sold on the<br />
open marked to yield 95% of the LME value. Enviolet achieves this with a <strong>com</strong>bination of segregated<br />
rinse techniques, high performance ion exchange technology and refinery based electrowinning<br />
processes that can recover between 50 to 500 kg/day of high purity copper and nickel.
E d e l m e t a l l - R e c y c l i n g i n B e r g b a u u n d O b e r f l ä c h e n t e c h n i k<br />
P r e c i o u s M e t a l R e c o v e r y f r o m M i n i n g a n d M e t a l F i n i s h i n g<br />
Edelmetalle (Platin, Palladium,<br />
Osmium, Rhodium, Gold) sind<br />
in vielen Abwässern enthalten.<br />
Dabei liegen diese oft in nur<br />
schwer zugänglicher Form vor.<br />
Enviolet hat dazu ein neues Kompaktverfahren<br />
entwickelt, bei dem<br />
zunächst durch einen oxydativen<br />
Aufschluss die Zugänglichkeit der<br />
<strong>Metal</strong>le verbessert wird. Danach<br />
setzen zwei Rückgewinnungsverfahren<br />
Hand-in-Hand nacheinander<br />
ein, um eine weitgehende Abtrennung<br />
der Edelmetalle bis hin zu minimalen<br />
Restkonzentrationen zu erreichen.<br />
Typische Einsatzorte sind Mienen,<br />
Raffinerien und Oberflächenbetriebe.<br />
Precious metals (platinum, palladium,<br />
osmium, rhodium and gold) are found<br />
in significant concentrations in various<br />
effluents. Unfortunately most of the time<br />
they are in a poorly accesable state.<br />
Enviolet developed a brand new<br />
<strong>com</strong>pact process, where initially the<br />
accesability for the metals is enhanced<br />
by an oxidative break down.<br />
Afterwards, two designated recovery<br />
processes are applied for the best<br />
separation of the precious metals<br />
while meeting low discharge limits.<br />
Typical application sites are mines, reffineries<br />
and metal finishing industries.
C o p p e r E l e c t r o l y t e P u r i f i c a t i o n<br />
A n t i m o n y a n d B i s m u t h R e m o v a l<br />
During the copper refining process, impurities in the anode either dissolve into the electrolyte or form<br />
anode slime. When arsenic, antimony and bismuth enter the electrolyte, they can undergo a number<br />
of different reactions depending on their respective concentrations, as well as on the presence and<br />
concentration of other elements. Arsenic enters the electrolyte as As(III), and it is gradually oxidized<br />
to As(V). Under these circumstances, insoluble antimony and bismuth arsenates are formed causing<br />
both issues with the tank house circulation pipework fouling and copper cathode nodulation.<br />
In the past refineries have undertaken multi-step purification processes to address impurity build up,<br />
these have included the use of ion exchange techniques, unfortunately issues of resin poisoning and<br />
high regeneration acid usage have made these processes both expensive and difficult to operate.<br />
Enviolet has addressed the issue of resin poisoning and fresh regeneration acid usage. Now copper<br />
refineries have a viable technology to remove antimony and bismuth from their copper electrolytes.<br />
Enviolet works solely with dedicated Lewatit resins.<br />
The recycling of the eluent acid is a crucial step for the economic efficiency of the whole process.<br />
Enviolet manage to recycle 80% of the eluent acid.
W e r t s c h ö p f u n g d u r c h A b w a s s e r b e h a n d l u n g<br />
W a s t e T r e a t m e n t f o r P r o f i t<br />
D i e V o r t e i l e l i e g e n a u f d e r H a n d<br />
W e r t s c h ö p f u n g d u r c h M e t a l l r ü c k g e w i n n u n g<br />
M i n d e r k o s t e n d u r c h w e n i g e r M e t a l l s c h l a m m -<br />
e n t s o r g u n g s k o s t e n<br />
P o s i t i v e Ö k o b i l a n z<br />
T h e a d v a n t a g e s a r e o b v i o u s<br />
E x t r a v a l u e t h r o u g h m e t a l r e c o v e r y<br />
L e s s e x p e n s e s f o r m e t a l h y d r o x i d e<br />
s l u d g e d i s p o s a l<br />
P o s i t i v e l i f e c y c l e a s s e s s m e n t
e n v i o l e t G m b H<br />
I h r e A M R E x p e r t e n<br />
Y o u r A M R - E x p e r t s<br />
Unsere Mitarbeiter zählen zur Spitze unter den <strong>Recycling</strong>-Experten. Wir legen<br />
den Schwerpunkt auf die industrielle Anwendung des <strong>Metal</strong>lrecyclings. Deshalb<br />
können wir für bekannte und neue Anwendungen den richtigen Prozess darstellen<br />
und somit unseren Anteil zur Sicherung des Bedarfs an sauberem Wasser<br />
und sauberer Technologie beitragen. Wir unterstützen die Wasserexperten<br />
bei der Suche nach der richtigen Kombination aus Preis, Produkt, Service und<br />
Technologie, welche Ihre Bedürfnisse am besten erfüllt.<br />
Our staff rank among the <strong>Recycling</strong> top experts, with a focus on industrial applications,<br />
proven by our reliable installations placed in the market. By this we<br />
are enabled to identify new challenges associated with existing and new applications<br />
to meet the worlds increasing demand for clean water technology. We<br />
support water experts to find the best <strong>com</strong>bination of price, product, service and<br />
technology to perfectly suit your requirements.<br />
Postal Schenkenburgstraße 18<br />
76135 Karlsruhe, Germany<br />
Phone +49 (0)721 59721 0<br />
Fax +49 (0)721 59721 21<br />
Web<br />
Mail<br />
www.<strong>enviolet</strong>.<strong>com</strong><br />
info@<strong>enviolet</strong>.<strong>com</strong><br />
April 2012 Copyright: a.c.k. aqua concept GmbH<br />
Gestaltung: Marc Szaratta