38. Aug 6, 2020. #6. For flux, look up Chapman's Flux. Commonly used for black sands smelting. Sometimes flux is too viscous. If using Chapman's flux, you can add fluorspar which will reduce viscosity. Details on this can also be found on forum. If you have sulfides, you'll need to roast concentrates to oxidize sulfides.

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Attrition Dry Milling In Continuous And Batch Modes

WEBability to control the milling atmosphere. The grinding tank cover can be equipped with a mechanical shaft seal. Purging with inert gas allows material to grind under an oxygen …

Beginners Gold Refining Process Forum. Need help. Thread starter djmad; Start date Nov 21, 2023; Help Support Gold Refining Forum: This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others. djmad New member. Joined Nov 21, 2023 Messages 2. Nov 21, 2023 #1 So I messed up on smelting …

Help Support Gold Refining Forum: This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others. 1; 2; Next. 1 of 2 Go to page …

A proper ball mill would have a speed that brings the balls up almost to the top of the circle and falling from that height. The higher (larger diameter) it is the further the balls falls and the harder the impact on what's being crushed.

Florida. Aug 11, 2007. #2. Let the powder settle for 24 hours. Siphon or drain off the bulk of the fluid thru a filter.Wash and rinse in the same vessel that you dropped it in. Transfer to filter and allow to dry when finished washing and rinsing. Steve.

On the refining part, he tried some things and sure it's educational, but not to be taken as an example for safety or best practices. Like cementing on stranded copper wire was not the best idea. He left a bunch of silver on that copper mess and should have rinsed the silver better before melting.

Features. Produces particles within narrow size ranges from 10 to 100 mesh. High throughput-to-horsepower ratio. Rotating disc and shaft assembly supported by radial …

Something to consider with ball and hammer mills is grounding. This is probably more important with ball mills than the hammer mills but it might be worth it to just play it safe. At issue is the build-up of static electricity in a finely dispersed dust environment. This could cause a dust explosion much like they have at feed mills …

Key Benefits. Easy installation and maintenance. Small footprint. Versatile equipment. Products. Gold Electrowinning Cell. Mercury Retort. Elution Strip Systems. FL …

If you are getting dust flying about your shop surely add a vacuum with a bag to collect the silver oxide powders but if it is well behaved powder mixed with split opened battery cans you have to screen out the silver oxide anyway so removing it from a filter bag may be more trouble.

Pacific NW. Feb 9, 2021. #2. Panning. To test this idea put some of the sand in a glass jar 1/3 sand and fill it with water, fit the jar with a lid, shake the jar vigorously, then swirl the contents in a circular motion, as the slurry of sand and water settles.

I have heard XRF is more accurate on higher karats, not true if you know what you are doing and have lots of reference standards. I use XRF to buy molten stuff. 50 grams plus of sketchy stuff or mined/panned gold I melt, take a pin sample, roll it flat and XRF 3 times on 3 spots for at least 60 seconds. 99.98% i'm on the money.

Just an update on the jaw crusher so far it has worked great the only problem is the catch bin. I have bungee cords holding the drawer closed some material ends up on the concrete floor and under the machine.

Help Support Gold Refining Forum: This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others. 1; 2; Next. 1 of 2 Go to page ... I was thinking about how to accomplish the milling without letting any dust escape; the rock tumbler uses a sealed vessel.-- Thipdar . Reply. rickzeien Well-known member. …

Ok so I have went through a batch of cpu and other gold plated part is an aqua regia. After all is said and done I am left with 27 grams of what I thought was gold powder (mud) . Now I have tried to melt it and it dose not look anything like gold. It looks dark grey. Its a metal ( melted at a high temp) but I have no idea.

While crushing breaks down larger chunks, milling reduces the material to a low micron range and, in some cases, can even achieve sub-micron reductions. Attrition milling is …

Today's spot 18K gold, $43.59 gram, 28 grams at spot $1,220.97 US. You claimed to have received $1350.00 for 28 grams 18k, that's a whopping $4.62 US dollars per gram an $83.16 dollar gain on 28 grams of 18k gold. For today's spot I used Dendritics Precious Metals Calculator - Link. S.

Eric Actually the bus bars pictured in my cooling pan are about the same size as what you show in your pic - the ones on the left are about 210 gr & the smallest ones on the right are about 45 gr - you can't really read the scale that well but that's 1.2 lbs points on the scale (not gr or oz ) that's actual weight of the points (container was tare adjusted on …

The gold and flux won't stick to it. I then crush the flux with the pliers to see if there are any glod beads inside. Sometimes there's a big one, other times I can't even see the gold dust. But, when I put the crunched flux in a vial and add a little acid and let it sit a while, the gold dust sinks to the bottom, and most of the flux dissolves.

Just as a really really cheap example of a near-continuous duty motor - A 20" window box fan. I've used these for a million low-load projects around the house, they work beautifully!Best of all, as cheap as they come, you don't even need to buy them yourself because they tend to clog with dust and people throw them out (if they didn't actually …

Fill the crucible with cold slag and heat it up slowly to 50% temperature. As the slag charge melts, add more and more slag until full. Pour off the old slag, turn off the fuel, and allow the crucible to cool somewhat. Pour the charge into the hot crucible and turn the flame back on.

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1. Read C.M. Hokes book on refining jewelers scrap, it gives an easy introduction to the most important chemistry regarding refining. It is free here on the forum: Screen Readable Copy of Hoke's Book 2. Then read the safety section of the forum: Safety 3.

Hi ceewye! Like brother machiavelli stated, gold straight from ore is not pure or 24k. Depends from the area you get the ore. For example, gold from different deposits in Alaska can be up to 22k. In California's Mother Lode around 16k. Around Colorado there're tellurides deposits, gold with high content of silver.

If we look at this like it were material in a gold pan you would want a shearing side to side action to get the material moving back and forth while remaining fluidized or in suspension. It allows bits to slide under another or plinko. It's way between and below another. If you vibrate a gold pan full of semi round objects it won't sort it ...

Set a low pressure flame. Hold the flame pointing straight down and the tip of the flame about a foot above the gold powder. Lower the flame slowly. You will find a spot when the gold slowly crusts. Lower it a bit more. At some point, you can safely melt it. This whole pre-melting thing takes about 30 seconds. A.

Sep 14, 2009. Messages. 5,529. Location. birmingham. May 12, 2012. #2. I hate to break the news to you but to get gold to 99999 is beyond most refiners capabilities let alone a machine. If you actually want 9995 you can achieve that with the knowledge here on the forum and with care and at least double refining you might get 9999 but in …

First, a jeweller must ensure they have accumulated a large enough sweep to make a profit. Stuart Wibberley, sales director at Cooksongold, another refiner, says …

The procedure I have been following from last 3 years is dip the dust in HCL and slowly add nitric acid with stirring for every 15 minutes till 4 hours. For 3-4 hours it's just stirring and adding nitric acid in small quantity and then I leave the solution for 24 hours and next day I wash, siphon, filter and finally add SMB to drop the gold.