Usenet Nutter wrote:
On Sun, 3 Jan 2010 12:07:41 +0000, (A.Lee) wrote:
It'll be classed as mixed copper or brazier copper. This is 30% or so
cheaper than plain copper. I've dealt with 3 scrap dealers, they all
only pay for mixed copper. It has to be brand new, or look brand new to
get plain copper prices. One joint, or a bit of solder on it, and it is
mixed. I thought about sorting out all my copper last time I weighed in,
but it was just not worth the extra £30ish I may have got.
Alan.
What actually happens to scrap copper plain and mixed .I guess it gets
melted down but does melted down plain get put to a different use than
melted down mixed ..I'd have thought the impurities would rise to the
surface and get skimmed off but probably doesn't work that way ...any
experts on melted copper in today? :-)
No, the mixed copper does not have 'impurities' float up (well, it does
in small amounts, the various oxides will float), the zinc, lead and
other elements in brazier copper will mix with the pure copper giving a
different alloy.
This resulting alloy, will, in most cases, result in a poorer quality,
and can only then be reused in a copper alloy such as brass, gunmetal or
other Cu based alloys. It can never be reused for copper pipe.
Alan.
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