Videos
https://www.youtube.com/watch?v=ASQCa7mfjVo. part 1
https://www.youtube.com/watch?v=gt-OOWxr7_s. part 2
https://www.youtube.com/watch?v=5TNy93baIGM
https://www.youtube.com/watch?v=pyvpaPr-J6I
https://www.youtube.com/watch?v=P6JwaAc8B5Y. 7 months
https://www.youtube.com/watch?v=LL1H_XY4zM8. 1 year hydrogen peroxide
https://www.youtube.com/watch?v=mvAtXNc06Jo. 1 year vinagar
https://www.youtube.com/watch?v=O0Q_qkzIxio. not show the melting process
https://www.youtube.com/watch?v=0cjDwglpnvg. burn and chemical
https://www.youtube.com/watch?v=vw9Zf6UnDIE. practical cut
https://www.youtube.com/@ScrappingIrish. scrapping Irish channel , he uses nitric acid.
https://www.youtube.com/watch?v=BIqDK23_Rs4 DIP IC gold and silver
https://www.youtube.com/watch?v=ada0vwSkyK8. use caustic soda to unveil the pcb to see gold
https://www.youtube.com/watch?v=8Jk8SyC8fco
https://www.youtube.com/watch?v=-yM3Zdx-DYw no acid smelting , not full extraction.
https://www.youtube.com/watch?v=tQ2dKTQrNCA. how to chip off components on boards
https://www.youtube.com/watch?v=hDuFNmSQAUc. no nitric acid. 11.58g gold
https://www.youtube.com/watch?v=UoPx1Drfq3U. gold from connectors
chemical making stanneous chloride
https://www.youtube.com/watch?v=jY7YlLQsryI
https://www.youtube.com/watch?v=iyHtcoFR0Ig. plumber no lead solder containing 90% tin
low grade pins gold extraction
https://www.youtube.com/watch?v=vUhnttmwvrA
https://www.youtube.com/watch?v=RbGU-G6n0SE. practical one
https://www.youtube.com/watch?v=sbpRKSh5g6c. welding machine using laptop power supply
https://www.youtube.com/watch?v=L91CIorE3xs. i like practical one rather than just talking
https://www.youtube.com/watch?v=pQoSVHFJqAs. sorting components and id gold
https://www.youtube.com/watch?v=ievbxE9y5vo muratic acid to dissolve solders pcb
https://www.youtube.com/watch?v=NTVfTXw0i8Q. find gold Indian traditional methods
https://www.youtube.com/watch?v=R5A5TgqbPFg. indian guy second video mercury
https://www.youtube.com/watch?v=ObddNx47Mmo. indian guy 2 kinds of powders?
https://www.youtube.com/watch?v=nlRSs2RPoTQ. white guys, not sure what method? not efficient
https://www.youtube.com/watch?v=IjDbyugJcmM. extract gold in 5 hrs.
https://www.youtube.com/watch?v=RPeFWcuuD58. palladium and platinum from ceramic capacitors
https://www.youtube.com/watch?v=MSJyk8RFNvs vinagar and salt , 5 months ago
https://www.youtube.com/watch?v=RWf0XLBP9_c. ram chips cleaning solution links available
https://www.youtube.com/watch?v=I90bWs1YACo. ram chips. venturi blower fume extract link
https://www.youtube.com/watch?v=RUCvPy09Fbg. vinagar and salt
https://www.youtube.com/watch?v=tAH46YTQH5Y. remove tin solder citric acid h2o2
https://www.youtube.com/watch?v=VZ6LBAL6rFc. BGA muratric acid
Tin always been a trouble in gold recovery process so it's necessary to clean solder from components before start processing for gold.
here I'm making a special solution which remove soldering specifically and leave copper and gold plating untouched. Hydrochloric acid is widely used by refiners to remove tin but it's time consuming prossece and something it also start releasing gold foils into the solution. due to presence of atmospheric oxygen copper would get dissolved and gold foils release....
https://www.youtube.com/watch?v=w9JHhjQjaeQ. remove tin solders fast. part 1
https://www.youtube.com/watch?v=VeMWe2Px9jg. part 2
https://www.youtube.com/@PickyPlans. Picky Plans youtube channel
https://www.youtube.com/watch?v=-vMqZlQUplA. cd dvd drive
https://www.youtube.com/watch?v=sJs31qK2ClM sulphuric acid DIY , many links on description
https://www.youtube.com/watch?v=NHBDXtn7pjA. same guy , nitric acid
https://www.youtube.com/watch?v=l9ifS3ubiBc. sulphuric acid from epsom salt
https://www.youtube.com/watch?v=XGEv9RGrvNY. making copper sulphate from epsom salt
https://www.youtube.com/watch?v=ohJkyZ_G8-M. laser gun out of topic
Articles
https://lets-rebuild.com/getting-gold-out-of-microchips.html#google_vignette
Nitric Acid
Amazon.com: Nitric Acid Substitute 8 Ounces : Arts, Crafts & Sewing
Worked good, I mixed 4 tbs of sodium nitrate to 180mL of Hydrochloric acid and some water to dissolve cpu pins.
Don't use this stuff to refine gold it does not work it ruins the whole process.
I've used it in three processes and it's failed all three times.bs of sodium nitrate to 180mL of Hydrochloric acid and some water to dissolve cpu pins.
Reviewed in the United States on September 13, 2022
Starts working almost instantly. Do not worry about dissolving or pulverizing beads of sodium nitrate they will dissolve on their own.
I mixed a third of a cup of 33% hydrochloric acid with 2 tbs in a pyrex glass. This was a preliminary test and what I found was….
With in less than 10 minutes the mixture-had already stripped the gold plate off the item I was using as a test subject. So as far as removing gold plate this item is ideal for someone not interested in making nitric acid. However even past the point of the gold plate being dissolved the mixture was still dissolving the base metal underneath. I am assuming that in perhaps a few hours it will be done. And right this is not a high powered solution to dissolving your gold, it will take some time but it will get it done, its creating nitric acid but a weak solution.
Consider this. I pay $10 for 1 gallon of 33 percent hydrochloric acid. The sodium nitrate is cheap as well. I will take this mixture and deal with waiting for the reaction to finish to save the kind of money I am saving and to avoid having strong nitric acid on hand.
Please though you might not see the fumes but they see there. Leave it outside in a safe protected area. Keep the solution away from your pets!!!
Urea
Chemical Nature
Biological Role
Industrial and Agricultural Uses
Historical Significance
40 lbs. Box Urea Fertilizer