Search results for query: hood

You can use a couple T pieces to connect a bleeder valve in the suction line letting air in, and one to a U-tube filled with water to measure the vacuum. This way you can set the vacuum to the desired strenght. 10cm height difference equals 10mBar pressure, so one leg rising 5 cm is 10mBar...

...here : 1, The overhead blower does not seem to be connected to the red pipes, so what is its main purposes here? the regular fumes of the hood only? 2, The red pipe does not have any suction or blowing therein as can be seen, so is the science of the entire unit being taken care of by that...

k. I'm trying to learn but I want to scale up later. so...something small right now. probably a 12 cubic ft. fume hood, and I'm not interested i reclaiming until I learn and go bigger whart is the motor and the exhaust pipe for? I'm trying to do like a 5gal. bucket.

I've seen reception centers like this on TV. in a program about gold miners in Australia. They are located in areas where there are many gold miners. but again, you write about a weight of about a kilogram. Well, let it be a hundred grams. but not 20 grams..

...induction from China for 3k (this will melt 1kg of karat in 10 minutes if you are going easy on it), some simple fume extractor pluged into main hood exhausts, dozen of graphite crucibles, some graphite rods, molds, mini anvil/iron chunk with hammer to tap off the slag... Small vice +...

...in operation i treat it like a bomb that can go off any time. Slow movements, no splashing, no overloading. Face mask, gloves, coat and fume hood where i hide my face behind glass. Also a emergency spill kit so you can clean up fast IF it goes sideways. Dont play around because you will find...

I am assuming you are drawing fumes directly from the beaker, and not scrubbing the fume hood air/gas mixture, with the above described setup. It would be reasonable to assume a fume hood would require a considerably larger system, then if one were to say use an Erlenmeyer style with a vacuum...

Face masks are not for refining!!! It can be in the lab for emergency evacuation, not for refining. You need a fume hood with the ability to decompose the fumes. If you are working outside you at least need a fan to be able to control which way the fumes go.

...has occurred over this amount of time. The point being, a HF vacuum pump, through the properly sized, maintained, and chemically balanced scrubber flasks, should last for a while, on a small home lab scale. This would be much less polluting, then installing a fume hood to the environment only.

...in corrosive enviroment than metal. Be aware that when you will be heating the stuff, you can produce condensate on the top and walls of the hood (since small overall volume and metal top of the fume extractor - my assumption), which can then obviously drip down - something you certainly...

I have heard of several limestone with included Gold deposits. Bigger then the Carlin trend types, and even much richer. Nobody wants a giant strip mine of this size, in a relatively upscale neighbor hood. Besides that, it is a known deposit, one which would upset the Gold market world wide.

An old diesel engine smells like faint NOx.

...reusing . I put copper sulphate cell solution in the copper container ( first waste container) Was this a bad idea ? I bought a spot plate yesterday have to order DMG next . It’s it possible for you guys to show off your hoods and scrubbers , I have to build my hood this summer please ...

...Okay this is a useful information, may you can explain why and what to do instead? Just some simple words. And yes I will continue with study Hooks book. Btw, all my experiments I do in a fume hood. Using safety equipment for me is mandatory. Waste solution I collect for later electrowinning.

...as the acid it came from and fall back into the reaction vessel and keep working for you. The forum has many posts on building your own fume hood and scrubbers from stuff you can get at any big box store. The general rule on air volume is 100CFM for every square foot of open space in the...

...to my illiterate use of terms was also valuable and i appreciate that. im going to be looking in to how to best construct the scrubber and fume hood and try to mend both proper equipment and diy solutions and i hope i can call on your help past or present to get it done. im sorry for all this...

Does the inside of your venturi look like this? https://goldrefiningforum.com/threads/fume-hood-venturi.10979/post-339473 Theoretically the vaccuum inlet point should be right at the narrow point, or just after, for the best vacuum. further behind the point where the pipe has expanded, there...

If you are in the U.S., Home Depot has Coroplast 8ft X 4ft sheet for $30. I used that for the interior of my hood and construction adhesive to stick it on, then used silicone caulking to tie it all together. You can cut the stuff with a good razor knife. It has been working well so far, and your...

That depends on the hood. For a simple AR digestion one can manage with funnels and a vacuum system dragging the fumes through NaOH solutions and water in stages. I believe this is showed as well.

It's a no go. I am guessing I need to put the hood's pipe a 3" and try the cup. Unfortunately only way I can get a larger vent after the venturi. I have vacuum as is, no where near enough..

Exactly... my hood looks like a middle school science project....:), But I've used it for years and works great. I would recommend making your fan easy/fast to replace and have a back up fan available. There's nothing worst then being in the middle of a reaction and the fan fails.

I'm two children richer and finally have some time to study the hobby more. Looking into DIY fume hoods and trying to figure out the venting situation in my garage/workshop. Need to study!

I never ran AP but I did do a lot of cementation on different streams of waste. I never wanted to put all of those drums in a walk in hood because I felt it was a waste of premium ventilation space. I ran lengths of 1" PVC pipe up a wall and out through a roof penetration as mini stacks, about...

...doing anything else in the house, all other parts of the refining will be done is a small shed outside in the spring. I will be building a fume hood, and will have more questions on that since I want to minimize toxic fumes or find a way to neutralize them. At this point I'm learning and...

Crush and wet gravity separation if your just collecting rocks that look good. That's what we do with great results.

...nitric acid. My wife was diagnosed with cancer and needed surgery and the refining shop could have burned down for all I cared. I left my fume hood on and had no ability to return to it till last month. Everything evaporated to dryness in there except a beaker and Erlenmeyer flask containing...

...anode. Sulphuric acid 98% but I got it from a friend and it was in a 20 litre drum so it's probably way less than 98% I built a simple fume hood. Using variable power supply I set the volts at 3V and left the current unset. scrap in basket and turned on the power. Seemed to be going well...

...you plan on doing refining long term use quality acid resistant materials so you don't have to keep replacing parts on your rednecks rigged fume hood 😉. Use the search bar at the top of your screen to read how many people have posted on this forum how they designed their fume hood. There is...

man i looked through that thread but its overwhelming i dont know how to construct a wet scrubber like that. the beaker set up i can understand your pulling fumes through the solutions to clean it but i am overwhelmed. all the home refiners ive ever watched dont seem to have that apparatus and...

This can help sorting the goodies from the scrap: https://goldrefiningforum.com/threads/list-of-items-that-contain-precious-metals.22304/