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Post by mohs on May 20, 2009 14:58:20 GMT -5
This is kind of a joke  but behind it there is certain seriousness i could get this machine but as anyone heard (or done) using a cement mixer as a tumbler? In the above pic the blades turn not sure how that would work but certainly could tumbles some large rocks  that interests me... |
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Post by catmandewe on May 20, 2009 15:13:15 GMT -5
The mixer above is actually a hod mixer for mixing mortar for brick and block, but I know someone who actually has a cement mixer he uses as a tumbler. The interior paddles have been removed on his cement mixer.
He uses it mostly to knock matrix off of stuff he collects out in the field.
For grit he uses sand blasting media with a pound or so of 40 grit added in.
He told me that most of the matrix is knocked off in a few hours.
Tony
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Post by mohs on May 20, 2009 15:48:21 GMT -5
Thanks Tony !
why would he remove the paddles ?
aren't they stationary in a cement mixer?
the best you know
is there some reason why he can't finish a batch of rock in the mixer?
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DeanW
has rocks in the head
Member since December 2007
Posts: 721
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Post by DeanW on Jun 4, 2009 0:26:32 GMT -5
Most cement mixers I've seen, the barrel turns like a tumbler and the paddles are bolted to the inside of the barrel so they rotate along with it.
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Post by mohs on Jun 4, 2009 16:08:22 GMT -5
I had a dream, a night mare, and a vision I dreamt I was driving a cement truck Across the country giving shows The cement truck even a had a name: Rolling Tumbling Revue so I’d pull up to a town and let the chute down and all these pretty polished rock came rolling out/ The people ooohhhed & awwwed I was a big success. ;D Then at this one town all the people were gathered around And I released the chute gate and this big boulder Started to emerge! I called on Herculean strength to hold back that Rock! But it was going to roll! All the people started scattering and the boulder rolled right down the street Causing chaos & disorder back there over my Atlas Shoulder then a huge chasm opened up & that Sisyphusian Stone rolled right into the abyss then I woke  |
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reelman
starting to spend too much on rocks
Member since July 2008
Posts: 114
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Post by reelman on Jun 4, 2009 22:00:41 GMT -5
There was 2 different rock hounds in Portland who used cement mixer barrels. One still does and finished polishing 800lbs of rock at a time. He lined the inside with fiberglass. Next time I'm over there I'll get some pictures.
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Post by Hard Rock Cafe on Jun 5, 2009 8:49:04 GMT -5
Provided it turns the rocks at the proper speed, it should work for the rough grind, but I'd be reluctant to try to polish in it!
Chuck
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Post by Michael John on Jun 5, 2009 10:38:32 GMT -5
If you wanted to tumble that much rock, I think it would probably be cheaper, easier, and more efficient in the long run to use 3 oil drums. All you'd have to do is line the insides with truck bed liner and they'd be ready to tumble. That would give you dedicated drums for the first three stages, then you could do the final stages in vibe tumblers. You'd have to fabricate cradles, and you'd need pretty powerful motors, of course.
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Post by mohs on Jun 5, 2009 11:05:48 GMT -5
see anything here I can use?  i took this pic awhile back |
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Post by Michael John on Jun 5, 2009 14:17:02 GMT -5
The drums I'm thinkin of aren't huge ... maybe about 15 gallons or so. They're metal with a metal lid and a rubber gasket. My step-dad worked at an oil field in California when I was a little kid, and that's where I remember them from.
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