Dr. Cadmium wrote:799 lbs mixed wire @ 0.45/lb
Recyclersteve wrote:That is a LOT of wire. Do you snip the ends off of the wire? Also, did you get a lot of it at a single place or was it several small accumulations?
Recyclersteve wrote:I've got some electrical circuit breakers from residential electrical control panels that I would like to recycle. The contacts inside the circuit breakers have silver in them (varying percentages depending on the mfgr. and model number), but I've heard that there is cadmium mixed in with the silver and that it is a known carcinogen. I thought that because your name is "Cadmium" that you might be able to shed some light on this matter. Is there any info you are aware of regarding this?
Dr. Cadmium wrote: You are getting very good prices on Cat5 and THHN.
Dr. Cadmium wrote:Recyclersteve wrote:I've got some electrical circuit breakers from residential electrical control panels that I would like to recycle. The contacts inside the circuit breakers have silver in them (varying percentages depending on the mfgr. and model number), but I've heard that there is cadmium mixed in with the silver and that it is a known carcinogen. I thought that because your name is "Cadmium" that you might be able to shed some light on this matter. Is there any info you are aware of regarding this?
Yes, sometimes the solder that holds the contact to the busbar contains cadmium. When you sweat them off you should be in a well-ventilated area and wearing a full-face respirator with chemical filters. When you sell the contacts or have them refined, the purchasing party may deduct an additional fee for the hazardous contamination.
I would recommend using a MAPP gas or oxygen-acetylene torch. Heat the bar until it is red hot, and the contact will slip right off with a scraping tool. I've seen contacts that are anywhere from 40% to 99+% Ag, not accounting for the solder contamination. Newer breakers often have no silver or the contacts are too tiny to be worth the time to remove. Busbars are usually copper, brass, or steel.
You are getting very good prices on Cat5 and THHN.
natsb88 wrote: Make sure the refiner knows what they are getting. Some don't want anything with cadmium at all. Smaller operations often aren't set up to process it. I remember an incident on BullionStacker a few years ago where somebody melted a bunch of scrap into a bar and threw some contacts in. They sold the scrap bar without mentioning what all went into it and the cadmium content was a surprise to the buyer. The seller lowered the value of the entire lot of scrap by contaminating it with cadmium. The buyer reduced their offer accordingly and the seller was very upset, airing it on the open forum. The lesson: don't mix and melt stuff if you don't know what you are doing; keep contacts separate from other silver scrap.
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