jamesp
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Post by jamesp on Jan 11, 2015 23:05:51 GMT -5
You mean you plan to mill somehow those grinding wheels to turn them into SiC powder? How do you plan to do it? Adrian Just break them with a hammer a put them in a tumbler for coarse grind Adrian. They kind of time release for about 4 weeks. This rhyolite at 3 days.   |
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Post by mrrockpickerforever on Jan 30, 2015 21:16:42 GMT -5
Great idea, James. I have used a few grinding wheels to dress my saw blades, but I never thought of using them as time released tumbler abrasive.
Thanks, Bob.
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jamesp
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Post by jamesp on Jan 31, 2015 5:51:10 GMT -5
Great idea, James. I have used a few grinding wheels to dress my saw blades, but I never thought of using them as time released tumbler abrasive. Thanks, Bob. Aluminum oxide is ok for softer material Bob. SiC wheels are rare, these were real old odd 5 inch wheels stashed in the back of the the yard. The SiC chunks ave. 3/4 inch are wicked rock grinders in the rotary. They tend to undercut some material if susceptible. Time release is a good description. |
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Post by gingerkid on Feb 1, 2015 13:02:00 GMT -5
Looking close it appears sapphire ? corundum ? red and blue particles are in them.  jamesp, is this a pic of the crushed wheels after they've been used as tumbling grit? Don't know what those little gemmy-looking fellas are in your SC wheel grit. Did a little research on SC production, but not sure if this is how they made the wheels many moons ago. ? Read on the Washington Mills website that SC is made using the Acheson furnace technique (no clue what that is) by heating silica and sand to high temperatures. Here's a carborundum (silicon carbide) TN from my collection:  Carborundum - silicon carbide (carbon and various metals) Manufactured/man-made in Niagara Falls, NY |
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jamesp
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Post by jamesp on Feb 1, 2015 13:19:56 GMT -5
Yes, Washington Mills is a giant producer of SiC gingerkid. The furnaces you described are the same described to me. Located near the falls for cheap electricity. Corundum mines were common in N Georgia and into N. Carolina back 30-40 years ago. The invention of aluminum oxide shut them down in the early 90's. These wheels may be old enough to have corundum. Those particles are w/nice color for abrasive grade corundum. Maybe sapphire was used in abrasive too. I will say they can flat grind some tumbles. So your SiC specimen is man made. Send me that thang and I will make 000 grit out of it. ha It probably cost a bit too much to serve as grit. Sorry I made such a rude suggestion. I know you guys have a large arsenal. |
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Post by gingerkid on Feb 1, 2015 13:30:53 GMT -5
So your SiC specimen is man made. Send me that thang and I will make 000 grit out of it. ha ROFL! Please quit eyeballing my specimen for a grit prospect, jamesp! JK w/ you!  I have visions of you blowing it to bits in a bucket or smashing it with your hammer. (  ) Interesting history about the corundum mines, and thanks for sharing. edited - if those are sapphires, i would be hounding your grit for them, jamesp. Off topic, but we previously discussed copper and manhole thefts - did y'all hear about the crooks that were stealing wire off of the light fixtures on Int. 85 and 185? (brilliant!) www.lagrangenews.com/news/home_top-news/151392373/Chase-leads-to-copper-theft-arrests |
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jamesp
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Posts: 36,612
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Post by jamesp on Feb 1, 2015 14:32:23 GMT -5
About a mile thru the woods is a crack house. those boys were going up poles w/tree stands and cutting the thick phone cables. They would pull several hundred foot lengths of it back to their dead end house and on back into the woods. We kept loosing phone service. I could smell them burning it in a west wind. One day the GBI came down on them w/ATV's and helicopters and busted the whole lot of them. Denise and I were up one night at 4 AM and the power flickered, seconds later the internet stopped working. That was their time of attack. I was nervous gingerkid. Because i had caught those boys snooping on my place twice. and did not offer friendly greetings. |
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Post by rockpickerforever on Feb 1, 2015 20:56:03 GMT -5
Found some cool specimens at Q, Bob thinks it is carborundum. Will take some pics and post them.
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Post by gingerkid on Feb 2, 2015 7:15:06 GMT -5
Looking forward to your pics of the SC specimens you found at Quartzite, Mrs. rockpickerforever and mrrockpickerforever.  About a mile thru the woods is a crack house. those boys were going up poles w/tree stands and cutting the thick phone cables. They would pull several hundred foot lengths of it back to their dead end house and on back into the woods. We kept loosing phone service. I could smell them burning it in a west wind. One day the GBI came down on them w/ATV's and helicopters and busted the whole lot of them. Denise and I were up one night at 4 AM and the power flickered, seconds later the internet stopped working. That was their time of attack. I was nervous gingerkidgingerkid. Because i had caught those boys snooping on my place twice. and did not offer friendly greetings. That's pretty darned scary to know that the boys were looking around your place, jamesp. Another reason to pack heat, and have some of your Lion dogs near your side. |
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jamesp
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Posts: 36,612
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Post by jamesp on Feb 2, 2015 9:58:37 GMT -5
Found some cool specimens at Q, Bob thinks it is carborundum. Will take some pics and post them. I'll take a box and smash them for tumbling grit. kidding I forgot the name of natural carborundum, it is rare in nature. Bet it is a bear to make cabs out of. Anything you guys can not find out there ?? |
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jamesp
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Post by jamesp on Feb 2, 2015 10:02:36 GMT -5
Yes gingerkid. I was well aware of the serious nature of the situation. One of the times I was saved by the bell, one of them was about to overdose. They had walked about 3/4 mile thru the woods to get here. I offered to take the whole batch of them home and did. From that point on they knew I knew where they lived. maybe that honed their intentions, who knows. I know the most of them were felons and got hard prison time for stealing the phone lines. doubt we will see them for a good while |
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Post by rockpickerforever on Feb 2, 2015 18:08:44 GMT -5
Hey, got some pics taken of the alleged carborundum. This was found just to the west of Quartzsite when we were there. I'd like to hear what y'all think:
Picked up a few pieces of the material on quartz. 
Flat stacked layers that are highly reflective, with a metallic lustre. 
Mark gave me a little container to keep the smalls safe. 
Just now thought to try a magnet test on them. They are slightly magnetic, but have a definite grain to them. Magnet picks them up from the edge, not the flat side. 
Flat plate (reflecting clouds above) 
Mostly, it reminded me of the silicon sphere @shotgunner posted a while back. 
Crystalline structure cubical, similar to galena 
Okay, what is it? Carborundum? Something else?
Thanks for taking a look.
Jean
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Deleted
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Post by Deleted on Feb 2, 2015 18:21:12 GMT -5
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Post by rockpickerforever on Feb 2, 2015 18:56:40 GMT -5
Moissanite, huh? Is it rare? Found it just a stone's throw  out of Quartzsite. jamesp, small stuff, not big enough to cab. Guess the bits will just be dust collectors I mean, specimens. |
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jamesp
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Member since October 2012
Posts: 36,612
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Post by jamesp on Feb 2, 2015 20:36:37 GMT -5
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Post by rockpickerforever on Feb 2, 2015 21:04:55 GMT -5
Dang, didn't realize how hard that stuff is! 9.25, almost as hard as diamond. Yeah, don't think I'd would even attempt to do anything with it. Can see why the aliens used it to armor their interstellar ships. Pretty much bulletproof...
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jamesp
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Member since October 2012
Posts: 36,612
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Post by jamesp on Feb 3, 2015 7:54:35 GMT -5
Dang, didn't realize how hard that stuff is! 9.25, almost as hard as diamond. Yeah, don't think I'd would even attempt to do anything with it. Can see why the aliens used it to armor their interstellar ships. Pretty much bulletproof... Pretty much a space age material. +9 on mohs, but brittle. Maybe best left as specimens as you mentioned. Pretty sure it is a rare find and well done. |
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Post by rockpickerforever on Feb 3, 2015 9:54:40 GMT -5
Wait a minute - how can it be rare and well done at the same time?  |
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jamesp
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Posts: 36,612
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Post by jamesp on Feb 4, 2015 12:04:59 GMT -5
Wait a minute - how can it be rare and well done at the same time? Where's Bob. |
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Post by rockpickerforever on Feb 4, 2015 15:22:59 GMT -5
jamesp-
Um, I have him mildly sedated... JUST KIDDING!! Two days of wielding that wet/grinder on rocks whooped his @ss, I'm afraid. And the job was finished off at PT this morning, the therapist really gave him a work out.
He is resting comfortably (he's taking a nap). Don't think he'll be playing with rocks today, lol!
It is a sunny 74 degrees right now (seems hotter than that), and I just got back from walking. Got sweat dripping from me. Now I understand being simultaneously rare and well done at the same time... (Redundant, too!) Describes me right now - ha. Stick a fork in me, I'm done! |
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I have visions of you blowing it to bits in a bucket or smashing it with your hammer. ( 
) Interesting history about the corundum mines, and thanks for sharing. 
out of Quartzsite. 
Nov 15, 2024 17:44:51 GMT -5
Nov 15, 2024 17:44:51 GMT -5
