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Re: Grinding Dust from a brake maufacturer



If the grinding dust is from the brake pad material, it probably contains
copper, so it could be a hazardous waste, depending on your state laws (it
would be in California).  Copper comes from metallic copper, brass, or
copper sulfides that are often used in brake manufacturing (much to the
chagrin of storm water runoff program managers for whom brake wear debris
is the biggest source of copper, which is a common surface water quality
compliance program).  The brake dust  may also contain some mineral fibers
(even asbestos, but more likely other fibers) that could make handling it
a health hazard.  If the copper level is high enough, it could be valuable
to a smelter, which may even pay the trucking costs.  If it contains a lot
of iron (another common ingredient), it might be able to be used in a
steel smelter.

Kelly Moran
TDC Environmental

p2ad wrote:

> P2 Tech List Serve:
>
> A brake manufacturer in North Georgia produces 28,000/lbs. of grinding
> dust a week.  The company is interested in providing it as a raw
> material to another company.  Because the grinding dust contains
> aluminum oxide, calcium carbonate, phenol, formaldehyde, and ammonia,
> the concrete and brick manufacturers are unable to use the material.
> Also, for many of the large concrete companies in Georgia, the brake
> manufacturer does not produce enough grinding dust to be worth their
> time.  Does anyone have any suggests for another use of the material?
>
> You help will be greatly appreciated.
>
> Thanks,
> Tina Williams
> Georgia Pollution Prevention Assistance Division
> 404-657-5204