Help Support Gold Refining Forum: This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others. S. seanengman Member. Joined Sep 26, 2011 Messages 9. Sep 29, 2011 #1 ... The black sands contain gold and platinum. It is what I have left over from cleaning up my dredge and all of my supplies …
Hi I have a need for some magnetic black sand that you already removed all the gold that you could. I am building a completely unique system to remove any micron gold that may be left behind. If it works,I will return the gold to you. We do not have magnetic black sand in my area. pm me if you can send some. thanks john I got …
if you roast the sands to red hot and keep it there for about a half hour, you may be able to use some ferric chloride to remove the iron. if you want to break the sand down, you will need a mill. thats a mechanical process and not chemical. black sand concentrates contain many different materials besides magnetic ferrite. theres silica's …
My black sands on the average weigh around 92 lbs per 5 gallon bucket. This works out to approximately 2.76 grams gold per 5 gallon bucket of black sands. I will be producing approximately a 5 gallon bucket of black sands every 5 days or so.
If your trying to smelt black sands your dealing with mostly Iron ore, some magnetic and some nonmagnetic, the iron is in various states, roasting will help to improve the ore somewhat. driving off acids and putting the ore in a better state for oxidation (or reduction). The flux would need to be able to get the iron and other base metals to form …
Thanks shecker. I normally would dry and then separate the magnetic material even before running it through the clean up sluice. Though usually I just pitch it Its a great idea to check it first though. So the process so far is: 1. Dry 2. separate magnetic material 3. digest magnetic material in hot HCL 4. digest non-magnetic in hot HCL 5. …
As gold becomes increasingly more difficult to find, recovering gold from black sands sounds like it might just be a viable option, provided one can streamline a decent process and figure out …
My numerous sluicing trips have produced about a bucket of black sand concentrates, which contain micron (mosquito eye) sized gold. The black sand also has some flakes which are heavy and appear to have a blue (almost sky) color and a number of pinky nail sized black opaque crystals which have a reddish/brownish (almost rusty) color.
So, what is in your black sand and does it contain gold? There is no way to be sure without sending a sample to a qualified gold refinery. If Gold Is There, Can It Be Profitably Be Extracted? The answer is, it depends on the kind of black sand that you have – if it does contain gold. If gold is present in small nuggets or flakes that are not ...
Depending on the amount of gold you are using and the desired level of purity, the two most common methods of refining gold are using high temperature flames and refining gold using chemicals. …
Gold Refining & Metal Refining Classifieds. Vendors - Refiners, Buyers, Assayers . selling black sand in Portland, Or. Thread starter joekelly; Start date May 17, 2012; Help Support Gold Refining Forum: ... I am a bit confused what your calling black sands, is this from dredging or panning, or is this the black impure copper/gold powder …
There may be an emerging market for the magnetite portion of black sands. As concerns over rising petroleum prices and greenhouse gases grow, the popularity of small scale synthetic gasoline and diesel plants using coal, wood waste, plastics, municipal wastes, natural gas and biomass as raw feedstock for this process is growing …
Black sand samples must follow a special smelting procedure due to they are difficult to melt at common temperatures. The fluxes to be used must be chosen with detail in order to avoid wrong …
Black Sands, in the areas of North America that I am familiar with, are usually comprised of Magnetite Fe2+Fe3+2O4 and Hematite Fe2O3. Both minerals are dense enough to irritatingly interfere with gold recovery from the densest stream concentrates.
I have seen a few articles describing gold in pyrite. 70% of the gold now being procesed is in a sufide form. gold pyrite is paramagnetic and will only respond to a very strong magnet. you can make gold pyrite magnetic by roasting it in open air to dull red heat. this changes it from a sulfide to a oxide and makes it magnetic. also it drives off …
But after all is said and done it comes back down to classified size of material to extract the smallest particles out of any ore material, if ya have a piece of 100 mesh gold and 30-50 mesh black sand, the amount of force it takes to remove the blacksand from your gold will indeed remove the gold along with it..... so size matters!
If you live in an area with large deposits of black-colored sand, are you sitting on tons of gold that you can refine? Or if you work for a mining company that pulverizes minerals and ends up with quantities …
Yep, that's what I've been doing. There's still a lot of black sand remaining that isn't magnetic. That could be broken fragments of a number of crystalline black minerals we have around the area to the north and west, where mica schists are plentiful and various combinations of zinc-iron, manganese and other metal sulfides and oxides …
A few picts of some BC black sand concentrates under the microscope ..... a couple things about these concentrates ..... * the bulk of the high purity gravity gold has already been removed via fine gold sluicing ..... * the metallics in these picts are what the fine Gold sluices have a difficult time capturing ..... * this black sand comes from Placer …
This tiny sample has no gold and now you know the weight of the black sand with no gold per one full measure. The rest is easy now weigh a few measure fulls of the b sand and it should weigh exactly the same as the no gold first measure of black sand. ... Beginners Gold Refining Process Forum. how to convert mono atomic white …
Simplified Black Sand Recovery By Clark Sable Hulette Mining Company P.O. Box 364 Reseda, CA. 91337 How to Process your Black Sand Concentrates By Vern H. Ballantyne ISBN 1-877700-07-X Mountain Publications P.O. Box 8008, Suite 252 Gloucester, MA. 01931 I hope that these books help, and they should.
Kurt is very right when he said potassium nitrate is hard on crucible's. Depending on the make up of the crucible, the life can be as short as one use. A while back I tried some silica sand in a flux mix of 50% borax, 40% soda ash and 10% silica sand on copper parts from IC's.
To smelt black sands you need slag formers: silica (fine ground sand) dehydrated borax, soda ash You will also need a collector: Gold works best, silver works next as best, copper, brass, bismuth, iron or lead Some people use nickel carbonate. You pick the collector according to your budget and your ability to separate the collector from …
Another gas-fired mixture tested by Champion was composed of black sands (100 gr), charcoal (300 gr), sodium nitrate (900 gr) and powered silver (500 gr). When an inductive furnace was employed, the formula needed to be modified: black sands (100 gr), charcoal (350 gr), sodium nitrate (150 gr), silver (50 gr), and copper powder (50 …
Gold Refining & Metal Refining Classifieds. Vendors - Refiners, Buyers, Assayers . Processing black sands, sulfide ore etc in Phoenix AZ. Thread starter Wolfpacker1; Start date Jun 24, 2013; Help Support Gold Refining Forum: This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others. ...
Laz, Put some PVC tubes with 1/8" holes drilled within them, and capped on one end in an old bath tub, then connect those to an air compressor. This is your churning device. Fill the tub 1/3 of the way with water, and add 1 lb of sodium hydroxide. to this solution add your black sand, turn on the compressor, and let run for an hour or two.
I'm interested in buying unprocessed black sands. I've seen 2 prices thrown around, $0.10 lb. and $0.25 lb; I'm thinking $0.25 per lb., with me paying the...
I am a placer gold miner from British Columbia. After recovering all visible gold from my concentrates I have sent three different samples of the concentrates in for assays. They came back at 83, 188 and 306 grams per ton gold still left in the concentrates. In order to verify the existence of...
People have reported that after they have removed all visable gold, even checking with microscopes to be sure that what's left is totally black sand, that gold …
what's the normal pureness of placer gold after melting it? and I'm going to assume that washing the gold won't get all the black sand that might stick to... Forums. New posts Search forums. What's new. New posts Latest activity. Members. Registered ... It is so consistent that the refinery simply pays out at that rate without more than 1 assay ...
We Process Black Sands. Due to the heavy iron content of black sands, most processors, smelters and refineries are unable to process them. We have a unique chemistry that allows us to aggressively process precious metals at 20 mesh and below in less than one hour, so we can effectively leach black sands without dissolving the majority of their iron content.
