why ship the junk to china?

[electrondady1]

traditionaly big vertical axis mills were used to grind grain into flour

i watched a tv show were some guys did just that.

i wonder if it would be possible to grind electronic stuff like tv's and computers

into powder and separate the various substances according to there relative densities.  

[fungus]

Usually they just melt it and let the different materials float out ...

[Stonebrain]

The best way is to seperate the different components as far as possible before going to rough methods like melting (or grinding?).

Unfortunately this is very work-demanding.That's why the junk goes to china.

cheers,

stonebrain

[Stonebrain]

"traditionaly big vertical axis mills were used to grind grain into flour

i watched a tv show were some guys did just that."

In fact I never saw vawts grinding grain.

where was that?

cheers,

stonebrain

[electrondady1]

Persia, long long ago.

[spinningmagnets]

Here's a good animation:

http://www.windpower.org/en/tour/wtrb/persian.htm

And here's a pic of the real deal:

http://www.deutsches-museum.de/en/exhibitions/energie/power-engines/wind-power/

"The early bird may get the worm, but its the second mouse that gets the cheese" -Larry the Cable Guy

[richhagen]

Here is a photo of the ruins of an old Persian VAWT:





Then there was Jacques write up of his tour of a 150 year old grain grinding HAWT mill in the Netherlands:

http://www.fieldlines.com/story/2008/1/27/0144/86608

Rich