What to use

[vyper]

Hello All first post here.

I've been lurking around the forum for a few months gathering a bit of knowledge from the guys and gals on here. Im in the process of building my own Fumehood/Cabinet and I'm curious as to what I should use to line the inside of the cabinet with. This may have been covered already but I am unable to locate it.

Also, I successfully processed my first batch of fingers 6.5oz using AP then HCL/CL methods and recovered a 1.5g nugget. Woot.

Made my first batch of Nitric for silver refining using Steve's Cold recipe but seems a bit orangish maybe from the red dyed drain opener. Put in freezer overnight filtered out salts refreezed a 2nd night and removed a much much smaller amount of salts. Weight is 1.25g/ml have not tested molarity as of yet but my rough estimates put it around 35-40%.

Im learning loads from this forum and from Hokes Book.
Thanks ALL,
Scott

 

[butcher]

I guess I may be a bit old fashioned but I would line the inside with sheet asbestos, (I have worked with tons of this material most of my adult life), if lined with asbestos sheet and using stand off's to keep an air space between walls and the outer liner, the older flammable storage containers were lined with sheet asbestos, between thin metal layers, the sheet asbestos can also be found on older house sidings, contractors would gladly give you these from some old house they are working on. If you can find an old flammable storage cabinet a fume hood could be made from it easily) if you do work with asbestos material take precautions as not to cause dust or to spread it around, wet the material if drilling, wear mask, and a jump suit so as not to get it onto your clothes and spread it around.

If you do not want to use asbestos, you could line inside with stainless steel or sheet metal again using stand off spacers to keep an air space between liner and outside wall, these spacers will let the liner get hot, and the air space will keep outer shell from getting as hot, epoxy coat regular sheet metal steel so it would last a little longer and not flake off rust (it would need replacing after some length of time, if you did not use the fume hood for burning or high heat conditions something like fiberglass liner would work, or some type of plastic type coated board like you would line a shower or bath with.

Ceramic tile on a backing board is another option, if this had an air space behind it could also take quite a bit of heat, (I have used this behind wood stoves to protect the walls from the heat) and give an acid resistant surface, the grout could be coated so that the grout will not be attacked by acid fumes.

Consider how you will use the hood, high heat or open burning (incineration), or just acid fumes, think fire safety and corrosion protection, and find a material that is resistant to these.

I also feel funny sugesting asbesto's in the safety thread, so study the materials and understand the dangers involved when working with it before taking my advice.
Other members may have some better ideas or a more favorable option to help you solve your problem.

 

[vyper]

Thanks butcher. I will only be using it for acid fumes at this time so the stainless or coated hd plastic route seems the best option. Again thanks for your help.

 

[nickvc]

Stainless is a bad choice for refining purposes as it's readily attacked by the most commonly used acid , hydrochloric. Plastics or ply board are better if you don't intend to use lots of heat inside the cabinet.

 

[vyper]

Thanks for the input guys.

 

[Palladium]

I use 5/8 - X fire rated sheet rock coated with epoxy.

 

[goldsilverpro]

The yield on the fingers was quite good - $168/lb. Don't expect that much every time.