Crock pot method with hot plate?
- Thread starter lasereyes
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Barren Realms 007
In Remembrance
There is the possablity of cracking the pot. If you do it be careful. I wouldn't.
Barren Realms 007
In Remembrance
Mine stays on contantly. I haven't turned it off for 3 weeks at least.
philddreamer
Well-known member
Barren Realms 007
In Remembrance
Yea that is Phils favorite toy. 8)
philddreamer
Well-known member
Yeap, :lol: that's how my Corning looked before & learned about watch glasses. I was just using it for the first time there in the pic.
It doesn't look that bad anymore, still a few spills though. For sure my favorite toy, it keeps granpa off the street!
From some info I've gathered from other posts here:
When used to dissolve copper based scrap 4 mL of 31% HCl per gram of copper; 124.41ml per oz. & so on.
It takes about 38 ml of nitric acid to dissolve 1 troy oz. of silver.
It takes about 79.3 ml of nitric acid to dissolve 1 troy ounce of copper.
Phil
It doesn't look that bad anymore, still a few spills though. For sure my favorite toy, it keeps granpa off the street!
From some info I've gathered from other posts here:
When used to dissolve copper based scrap 4 mL of 31% HCl per gram of copper; 124.41ml per oz. & so on.
It takes about 38 ml of nitric acid to dissolve 1 troy oz. of silver.
It takes about 79.3 ml of nitric acid to dissolve 1 troy ounce of copper.
Phil
philddreamer said:
ok, this should work, I will just have to change the acid a couple of times to get all the copper out. Interestingly enough, chemists always say that hcl will not desolve copper becuase it is beyond the metals that react to hydrogen ions, but i assume that the water used to dilute the hcl oxidizes the copper?
philddreamer
Well-known member
That's what I understood. HCL alone won't, but any oxidixer present, it will.
Also peroxide, for example, added to the HCL will digest copper, that's what the AP process is all about. It will digest the base metals leaving behind the gold foils.
But don't add too much peroxide because it will then digest some of the gold too! If that happens, just add more copper & saturate your solution with it & the gold will cement.
Check out some of the posts on the AP process for more detailed information.
Also, if you haven't read Hoke's download a copy; its a must!
Be safe!
Also peroxide, for example, added to the HCL will digest copper, that's what the AP process is all about. It will digest the base metals leaving behind the gold foils.
But don't add too much peroxide because it will then digest some of the gold too! If that happens, just add more copper & saturate your solution with it & the gold will cement.
Check out some of the posts on the AP process for more detailed information.
Also, if you haven't read Hoke's download a copy; its a must!
Be safe!
About the only white baking dishes I have found that won't crack on a hot plate are the Pyroceram StoveTop ones made by Corning Ware. They stopped making them for 10 years but resumed production in 2009. I think they're only available online and are not in stores.
http://www.shopworldkitchen.com/corningware/stovetop-just-white-casserole-jw-5c-b
I also don't recommend placing a ceramic crockpot dish directly on the hotplate. I tried this and it cracked.
http://www.shopworldkitchen.com/corningware/stovetop-just-white-casserole-jw-5c-b
I also don't recommend placing a ceramic crockpot dish directly on the hotplate. I tried this and it cracked.
patnor1011
Well-known member
It is maybe good idea to use steel pan with layer of sand. My fav method is steel pan with kitchen spongy towel and small amount of water.
philddreamer
Well-known member
I bought my Corning @ a second hand store for less than $10.00 back in may or so, & its still going. Since, I've bought 2 more for back up. 
eeTHr
Well-known member
I found some Corningware in a thrift store, that look like frying pans, handle and all, as one-piece. The ones I found were only about 5" diameter, and not very deep, though. But they say "Stovetop Safe," or something like that.
Does anyone know about the brown glass stove-top pots with the built-in handles? They even have lids which will drip the condensation down inside the pot! I found a nice, like-new, one at the thrift store, but my wife uses it to cook rice in, so she can see when the water is gone. I like fluffy rice, so I didn't complain. But I figure if you can use them on a stove burner, they should be good on a hotplate, right?
Does anyone know about the brown glass stove-top pots with the built-in handles? They even have lids which will drip the condensation down inside the pot! I found a nice, like-new, one at the thrift store, but my wife uses it to cook rice in, so she can see when the water is gone. I like fluffy rice, so I didn't complain. But I figure if you can use them on a stove burner, they should be good on a hotplate, right?
Barren Realms 007
In Remembrance
eeTHr said:
Yea those are good to use.
eeTHr said:
I think CW originally made Pyroceram in skillets and other shapes. Like the 5 qt one, all I've seen had a decoration on them. The new ones are lily white,
The see-through amber colored stuff is called Vision. There's lots on EBay. It works great on a hotplate. I had a few pieces but I didn't like the shapes as well as the white, deep, square, flat-bottomed, 5 qts/liters Pyroceram by CW, old or new. The new ones are also marked or called StoveTop, a CW trademark. They're also great for evaporation.
lasereyes said:
Not without difficulty and perhaps damage. Do you want to pump the solution or do you want to siphon it? Big difference. You don't need a pump to start a siphon hose. You just put the ends together and fill the hose with water until there are no bubbles in the hose. Put your thumb over one end and lower it to the catch bucket (don't release it yet). Then plunge the upper end into the solution you're siphoning and release the bottom end at the same time.
dtectr
Well-known member
Lazersteve has a siphoning video on his site http://goldrecovery.us .lasereyes said:
I use small diameter aquarium tubing & a large-ish(?) plastic syringe that came with an inkjet refill kit. Just place the receiving vessel lower than the source end (Remember 8th grade Science - Fluids seek their own level) I can fill 2' of tubing with less than a full plunger-stroke, hold the end over the receiver vessel & pop the tubing off. Capillary action does the rest.
