Suggestions for a Small Scale Leaching Operation 

Thank you. I enjoy it and sometimes it is very rewarding to make someone's life happier.

Thank you sir, I hope he does. But if you do it for reward it's not the right reason, is it?

Email me any questions if you have them. Luck!

@@hardrockuniversity7283 Please provide your what's app details

@@Sarah-qe7pt why would anyone give you that?

@@kylestrokelitus360 It's easier communication in some countries . Thanks for asking

The rain would dilute the chemicals to some extent depending on how much rain you get. Covering the system to keep the rain out will protect from problems. make sure that heavy rain cannot cause the system to overflow.

Do you know exactly what size the gold is? How much magnetics are there also?

Is this vat, tank , or heap leaching. In agitated tanks it would usually be 40-72 hours retention time for the ore. The carbon adsorbs the gold in a matter of minutes if is is in clean solution. Everything always has to be tested and verified as all the variables are quite ore dependent.

@@hardrockuniversity7283 hmmm good question on the type of process. I was just adding my thoughts on this gentleman's process. To try and understand better and aid in the discussion. But let's forget about that and allow me to ask you... If this was your operation and you struck gold based on what you've researched. You found the copper / gold ore, the batroydal hematite Carlin type deposit with pyrite and arsenopyrite, and your sure it's mimicking the same situation on your grounds, but here's the catch, you have no money. What would be the most efficient way to complete the liberation of this small almost invisible deposit of high grade gold? Vat with agitation? If so, what could be used to agitate

@@kylestrokelitus360 If oxygen is a plus (as with cyanide) or neutral to the chemistry, a Pachuca Tank is very simple. You could also use a venturi pump like they use in dredges.

I am not certain, but the concentrated thiourea stripping solution I am using with my resin cements gold onto both copper and stainless steel. It should be easy to test, try running it over some zinc sheet.

@@hardrockuniversity7283 thanks, you're answer is helpful

@@rayanahmed8724 You are most welcome.

Have you characterized your ore well? For example, what is the particle size of the gold? heap leaching does not work for every ore. You night note that our tailings pad is essentially a heap leach.

Are you the same person who asked a similar question yesterday? I have no real experience refining gold from arsenopyrite. 911 metallurgist has an article on the subject : www.911metallurgist.com/blog/arsenopyrite-gold-recovery#gsc.tab=0 That may give you some ideas. Keith

Ph needs to be over 10 at an absolute minimum for CN stability. 11 is better. Lime can do that, Sodium Cyanide is the usual source of the CN. You don't neutralize the fluid, you re-use it. Before you re-use, you replenish the chemicals to the desired concentrations. The standard carbo is activated coconut shell charcoal. Typically something like 6-12. That means it would go through a six mesh sieve and be stopped by a 12 mesh sieve.

@@hardrockuniversity7283 very much appreciated. Is it difficult to purchase sodium cyanide, or can anyone get it? I've read a blurp from a study in which they found accidentally that cornstarch could be used to substitute for Sodium Cyanide in the leach. I didn't have money to purchase the study but I thought that was awesome. I wish I knew more cause I'm not confident in my lack of knowledge of chemistry to make a critical error with allowing the pH to jump and create that insanely deadly mustard gas. Eeek..

@@kylestrokelitus360 I heard the same thing about corn starch, but the study has to do with cornstarch being used to precipitate gold OUT of solution, not dissolve it in the first place. It also only works with the bromide complex of gold, so is useless in thio or cyanide leached. As usual, some one starts with a nugget of truth and goes completely sideways.

Editing can do interesting things. :-)

Hmm. Ground control is very site specific and important to get right- probably difficult to do ageneral lesson on. we'll see what comes up. WRT your situation, is it pretty much virgin ground or already well mined?

It was used many years ago before activated carbon. It was replaced because the carbon is more efficient. For details, Google 'Merril-Crowe Process"

If you are talking about me, my email is hardrocku@outlook.com. If you are talking about Nikunj, you can email me and I will forward it for his consideration. Keith

Using a thiosulfate leach solution like eco-goldex will dramatically reduce any preg-robbing by the ore, but you will have to use a resin instead of carbon to get the gold out of solution. Carbon does not adsorb the gold-thio complex very well.

how can i dose.

@@kelvinmjuni2627 I am still working on the resin extraction.

It is much more expensive, it dissolves much more than just the gold, and it creates vastly more toxic waste. Cyanide is cheap, works at low concentration, and is relatively selective. It is also easier to handle and dispose of. Keith

@@hardrockuniversity7283 in a heap leach or stacked engineered leach field that combines several heaps over an entire mountside, how does a closeby resident test to see if this oddly abandoned site is safe for the eco system? There 55 gallon drums halfway disolved and corroded at the collection and settling ponds they used as what appears to be a recirculation loop, and one final dump pond at the bottom where a very convinent roadway is located. the bottom pool has a dozer wide pathway ripped through it and pushed across the final access dirt road before the gate and main roadways, almsot as if it was quick, rushed, illegal, and completely abanodoned. Theres no records on MRdata.gov, theres no "no tresspassing" or mine staked, just remants of what was a definiete operation less than 10 yrs ago. The crushed ore is rather large for leaching and upon inspection has alot of metal mineral throught many acres of already crushed and heaped pads. ITs odd. 1st I wanna know if its safe for the eco system know what I know, and 2nd Hell I wanna procees this abandoned area since most of the work has already been done. I've found many many good grade material. so Its insanely absurd to me. any insight would help. Kyle I'd appreciate to communicate through other means other than public view. lmk. Thanks

@@kylestrokelitus360 My email is HardRockU@outlook.com. Cyanide is not generally stable in the environment, but is easy to test for. Heavy metal would be a more likely issue. If you have a soil or water testing lab nearby that can test for organics, toxins, and heavy metal you could take soil samples, or if a water lab, soak the soil in pure water first, filter, and then have tested.

I suppose it might depend on exactly what solution is being tested and the concentration. They have cyanide solutions with a relatively small amount of gold compared to scrap recycling. It might work though.

It will work this is what I use if it shows a light amount of gold still left in solution it'll be a lighter lavender color if it's still has a lot of gold in it it'll turn out dark purple to Black works every time if it's in there no second-guess

@@robwiddisonwiddison5654 can i have your contact?

Can i have your contact?