gold recovery from gold contains stone 

Why don't you neutralize the aqua regia using urea? I'm curious about it.

Hello, dear friend and teacher I had a question. I had some stones that I crushed and powdered After washing it, I put a little sulfuric acid and nitric acid on it. After a few hours, I took the stannous chloride test solution and it turned black, but after this step, after I washed it and applied acorgia acid, the stannous chloride test gave the correct answer.

Good information 👍🏻👍🏻👍🏻🤲🏻🙏

Hello sir, is sulfuric acid mustbe use in this process?

Very good method. Thanks a lot 🌺🌺🌺

Method is right.thank you so much sir.

Your gold ore extraction is so good

Good idea amazing video,👍👍👌🎂💐

Why did the first period we must use sulfuric to mix with nitric acid to dissolve impurities ?

Good information sir 🤗👌👌

Sir stone wieght ketna lena hay mein laga experiment karny bilkul ready Hun bta dain sir

thank you very much

Mixing nitric and sulphuric acids the first time can dissolve gold, I wonder how you could get some gold in aqua regia !!

So i think ..the rock was it have the contain gold solid metal ...in where if we used method Aqua rejia ..Will get easy way ..to catch the precious precipitate...is different if precious metal in form ..partikel of gold...😁😁🙏🙏

Thanks, please what is SMB?

Aslam alaikum sir, I have made Gold through this Way and Get some dust and then I Burn them but it doesn't weight and Colour as Gold

Hello my good friend.thank a lot.🌺🌺🌺

You're working with pyrite I guess for rock or stone in Aqua Regis does not look like that! Am I missing something sir?

Why the solution color has not changed directly after adding smb. It is supposed to change directly

Good video

sir..please.. from me myanmar.. using iron sulfate..what name..?..excuse me...sir

Hello..sir.. this..video.. no using..sulfate.. why..?

കണ്ട് പഠിക്കേണ്ടത് തന്നെ!ഒപ്പം പ്രോത്സാഹനവും നേരുന്നു

It is filter cost going expensive ? Crushing panning water filtering Using deferent acid and powder Finding little amount of gold depend luck

in which market are these stones sold?

Hello sir... want to ask that can I use other acid besides sulphuric?

អូខេល្អណាស់។អូខេល្អណាស់

I also have stone that has like gold but im not sure i wish i can share the photos here

Good

after adding smb in aqua regia. soution didn't became black color.why

لطفا پتاس رو از سولفات پتاسیوم جدا گنید

Good idea

Good👍🙏

What is sbm???

You didn't Tell or write anything?why?

So nice

What's that SMB ???????? I am not understand that

I have test my equa regia test is positive but gold cold.t seat with smb I have try many time but did.t get any things.pls help me

It seems that I recognize this face as Gonzalez!

Good idea👍

Exposed when adding The color becomes black solution .It seems you The video stood

Thanks 👍good video sir💝 filtering paper kitne microns ka hota he...👨‍🔬

sir please nitric acid hydrochloric acid sulphuric acid chemical person please sir

Thank you sir👍

How do you dissolve gold in solution without awua regia?

Plz show simple method , Simple way Stones where we find?

Do vitamin c deposition gold

Ye stone kaha milenge sir plz bataiye

This piece Kidhar Milta Hai

Good information👌✌👌

It seems to me That your job Not on the same rock . It shows it ashes electronics . The rock is difficult to operate it

Sir ai stone kothay pabo aktu bolun sir

Where found these types of stones

Online milega kya stone nam kya hai

u didn't kill nitiric direct smb wrong

Ok sir 🙏🏻👌👍❤

Why do you continue to pour acids down the drain ?. It's no good for the environment

Thank you

Wheare is available this stones

Goood

👍👍👍

Gold recovery course I want Please help me

🤟👍

Amazing 👍👍👌

Bhai ase Patthar kahape hote he

Sir please make one video on mlcc

Hi reply

Devamı gelsin 👏👏

Sir ye stone India main Kahan paye jaten hain please reply me thnx

Sir number plz Muje a Jan Kari deni he

Hum bi hen is Dais me

Try to use 'rock' rather than 'stone' to speak English like a native person.

Hi sir ❤️

Apse bat kasey hogi

🇹🇷🇹🇷🇹🇷🇹🇷🇹🇷🇹🇷🇹🇷👍👍✋✋

U self , sticking on stone 🪨 Gold dust and removing in frant of video 😳☺️😛😜😂🤣.. I am joking man

HLC % HNO3 % HF % H2SO4 % please Sar help I live in Dhaka Bangladesh

Any contact no ap se bat krni hae

Sir stone wieght ketna lena hay mein laga experiment karny bilkul ready Hun bta dain sir

Sir stone wieght ketna lena hay mein laga experiment karny bilkul ready Hun bta dain sir

Sir stone wieght ketna lena hay mein laga experiment karny bilkul ready Hun bta dain sir

Sir stone wieght ketna lena hay mein laga experiment karny bilkul ready Hun bta dain sir