Waste Electrical and Electronic Equipment Directive - Assaying, Microscopy, Mineralogy & XRF/XRD - Metallurgist & Mineral Processing Engineer

To participate in the 911Metallurgist Forums, be sure to JOIN & LOGIN
Use Add New Topic to ask a New Question/Discussion about Assaying, Microscopy, Mineralogy & XRF/XRD.
OR Select a Topic that Interests you.
Use Add Reply = to Reply/Participate in a Topic/Discussion (most frequent).
Using Add Reply allows you to Attach Images or PDF files and provide a more complete input.
Use Add Comment = to comment on someone else’s Reply in an already active Topic/Discussion.

← Back to Assaying, Microscopy, Mineralogy & XRF/XRD...

Waste Electrical and Electronic Equipment Directive (3 replies)

7 years ago

blessed 7 years ago

Which is the appropriate method of determining composition of minerals from WEEE, pulverized or using them intact. Also which is the best method of recovery pulverized or intact.

Dominique Huot

7 years ago

Dominique Huot 7 years ago

1 like by David

Hello Blessed,

Which minerals you are looking to identify?

blessed

7 years ago

blessed 7 years ago

Hello DH,

I would like to recover precious metals, Ag and Au.

Deano

7 years ago

Deano 7 years ago

Commercially you have two options for treatment of e-waste for gold and silver.

First is a cyanide leach, second is smelting.

Cyanide will leave behind pgms and any coated or encapsulated gold and silver.

Smelting will recover all precious metals, Japanese smelters will generally give you the best returns even allowing for transport.

Grade can only be estimated at best as there are many variations in the feedstock you are looking at.

The closest estimation can be gotten by running a bulk leach on really well sorted splits of the material in milled and unmilled forms, this will also tell you whether the cost of milling is justified.

Please join and login to participate and leave a comment.