Search results for query: hood

...this, filter the iodine solution from the ore, and wash the ore with a small amount of pure ethyl alcohol. By evaporating this solution (under a hood or in the open air - iodine vapor is toxic) and calcining the cup to 250oC-300oC, you will get a more or less approx. the weight content of...

...to be acid resitant, or it will have a short life. Another option is to power a venturi with it, so the venturi can suck in air from the fume hood without going through the fan. While building your lab, make room for waste treatment buckets and drums. That fume from the stockpot could...

There are several good threads on fume hoods and ventilation in the Build Your Own Equipment section of The Library. Dave

1) I have a fume hood. 2) I only use a tiny couple of prills of urea when denoxxing. My solution was cold and it is hard enough getting sulfamic to dissolve in hot water, but urea will react no matter what. I only use a few prills just to tell me if I need to use sulfamic or not. I didn't...

Thank you! I do live in the U.S. and my uncle in law happens to work at the nearest Home Depot so I will ask him to grab some for me tonight yet.

Just studied what a fume hood needs to be from google and came up with my own design

...answer was focused on my local "enviroment", where the idea spread among some small scale refiners and had some impact. Construction of such a hood is modular, and materials are available all aroud the globe (as IBC containers are accessible and common in many many places). I don´t know if...

If I may ask, what did the faint smell of nitric smell like to you? I am a beginner as well and I saw all of the fumes getting sucked out of my fume hood but still smelt something in the air. Almost smelt like chlorine

Wow! Thank you for that process explanation! Fantastic! I haven't played with silver yet but from all I've read, it seems to behave quite differently than gold.

...and advice that you gave. I am very excited and anxious to get started now. I do have all the safety equipment that I need including a fume hood. I have refined plasser gold that I have prospected for either by panning or detecting, so that I could pour into my ingot mold and have a 999 ingot...

...or to the bottom. Baffle panels on the sides and or back, where the exhaust can pull toxic or acidic gases from both the top and bottom of the hood. The air or exhaust out can also be changed by how much air can enter the hood (you can only suck so much air outa Coca-Cola bottle til it will...

I did not study the subject in depth but a drawback would be that high concentrations of nitrate ion can degrade the oximes and make the consumption of the active compound of the extraction solvent at prohibitive levels. I asked the manufacturers of 2 solvents for copper in nitric acid...

...LOT to process (think years), but I like to keep things small when recovering. I process maybe an ounce or two, in a run. I am building a fume hood currently and that isn't too big a deal a for me as a former finish carpenter. My exhaust is 10in which will be scaled down to whatever I need...

I love the fact that you're only talking fume hood details and waste treatment and no process, source material or cry for immediate help with a chemical mess has been discussed. Hat's off to your wonderfull approach sir! Bookmarked this one for educative purposes.

Search the forum for "making your own fume hoods", it is all there, many threads.

Yep, I thought it was too much SMB. I also rinse it out with HCL. I"m glad I was wearing my respirator, I didn't smell it. Thanks for the fume hood tip. I figured it was an air flow issue needing some baffling of some sort. I figured I would go through blowers, so I will check out the venturi. I...

Butcher always has the best analogies!

...means a limestone filter would work, but I have not seen a base filter. When in doubt, google your respirator brand, and look for the type filter mentioned. Remember that there is no one filter which does it all, other than a fume hood. A Chlorine cartridge will afford no protection against...

...are not chlorine gas at all, but something much worse. Your chlorine mask won't even know what you are breathing through it. Nothing beats a well-ventilated fume hood and workspace. Unless it's a self-contained air supply like fire fighters wear, even then you are limited to exposure times.

Thanks for the information very useful!

Use proper English, k do not translate well and we have members relying on translators. How much material are you processing at a time? What kind of material? Which process are you using? Lets start with that.

...some suggestions of good threads. I realize now that this is a limited list, but with co-operation of our members the list will grow and become even more useful. Building a fume scrubber Building a hood Cementation Gas Melt Furnace Inquarting Poor Mans Nitric Small Silver Cell Stannous Chloride

Firstly, I do not have experience with manufactured hoods, but what I can tell you from the start, try to take one where is minimal ammount of any metal parts in the "active" part of the hood, exposed (no matter if painted or not). If possible, you want everything to be plastic, vent pipe to be...

Thanks for the answer!

Just remember that when it comes to boards Tin is your nemesis !! Eliminate the tin as much as possible

This is just a part of isn't it? The digestion reactor is not here? Is this better understandable?

Take a look in The Library. There are a few threads on hoods, ducting, and scrubbers. Dave

...be simply taped to the top PE foil, and from the sides there would be "walls" made from multiple layers of that thick PE foil. Front of the hood will have PE foil curtains - depending on the length of the bench, divided to 3 or 4 segments. For work, you will simply take the segment and place...

Small, yet interesting