Gold Recovery from Plated Watches

[@gopalkrishnavyas3891]

When I used concentrated Nitric acid to dissolve the base metal in the watch cases,it was a very heavy exothermic reaction with a lot of Nitrous fumes,I was really scared!! Should I dilute the acid ?

[@escrapchannel]

Hi, that’s exactly how it works. If you use diluted acid you will have slower reaction, less fumes, acid will be used more effectively. So, if you are fine reaction to be slower, lower nitric acid concentration has all advantages.

[@gopalkrishnavyas3891]

@ Great can I dilute the Nitric with distilled water?Any precautions when diluting? Thanks so much

[@escrapchannel]

@@gopalkrishnavyas3891 Hi, you always pour acid into water. Concentrated nitric acid dilution is exothermic. Distilled water is perfectly fine to be used.

[@gabrielmaligeorges4362]

Always good content. Thanks.

[@escrapchannel]

Thank you!

[@Sergey-Master-LOMaster]

Great recycling friend... 🤝👍

[@escrapchannel]

Thanks!

[@Sergey-Master-LOMaster]

A great way out for gold 👍

[@escrapchannel]

@@Sergey-Master-LOMaster 👍

[@newhampsha4life]

Awesome video! How did you manage to prevent silver chloride from contaminating your gold?

[@escrapchannel]

Hi, in gold plated watches processing I did not find silver chloride to separate. In general, filtration helps.

[@faycelbenboulares6260]

Thanks you

[@zalanfekete5970]

Hello , How much time the disolving this watches in HCI+H2O2 solution ? And if i use this method how much will be the concentration of the Hidrogen peroxid 3% or 6%? thanks your answer.

[@escrapchannel]

Hi, I never tried dissolving solid brass cases in hydrochloric acid and hydrogen peroxide, but if I try this I will pick 30% peroxide and periodically add it to the solution to keep reaction going. With 3 and 6 % peroxide the issue is that volumes become huge at certain point.

[@escrapchannel]

My point is that in case of silver contacts cleaning from copper we deal with small amount of copper to dissolve. Watch cases are tens and hundreds of grams. For watch cases I always use nitric acid.

[@thekeeperoftime1977]

Здравей, видях че си Българин от едно друго видео мога ли да се свържа с теб? Благодаря

[@thekeeperoftime1977]

Ще ме извиниш май не зададох правилно въпроса. Как мога да се свържа с теб?

[@escrapchannel]

Здравей, да пиши на мейла. Няма проблем. Не искам да пиша телефон в коментарите тук.

[@davaiyte_razberem]

Великолепный материал👍👍👍🤝

[@escrapchannel]

Спасибо 👍

[@antoniokasabov9364]

Здрасти, интересно видео! Как разбираш колко време трябва да престоят предметите в азотна киселина? В клипа мисля, че каза, че тези са стояли около 2 часа.

[@escrapchannel]

@@antoniokasabov9364 Здравей! Когато спре реакцията - отделянето на мехурчета или се е изразходвала азотната или се е разтворил метала от часовниковите каси. Изваждам ги, промивам и слагам отново в азотна. Ако реакцията рестартира бурно, значи има останал доста метал за разтваряне. Ако се появи съвсем слабо оцветяване, значи сме на финала.

[@antoniokasabov9364]

@@escrapchannel Мерси за инфото! А накрая как успя с обикновена горелка да го разтопиш, четох в интернет, че трябвало 10-15мин да стоиш с горелката, за да достигне температурата на топене на златото.

[@escrapchannel]

@@antoniokasabov9364 Горелката не е обикновена :) Това е бижутерска горелка за малки количества и за ремонти на бижута. Мап газ и кислород - развива много над температурата на топене на златото.

[@shaneroberts7676]

So those were gold plated? Not gold filled? I've always avoided plated jewelry. But if that is a yield from plated watches, wow.

[@escrapchannel]

Hi, I have one more video where I show the marks of the cases so you can see it is gold plating 5-20 microns thick. Only for one of this pile of cases I think was filled. All other plated.

[@m.yaseenaslam4988]

How gold recovery in one kg gold plated watch case or pins

[@escrapchannel]

Hi, it really depends a lot. My yield of gold per kg material is between 30g and 0.2g. 30g I got from military USSR pins, and 0.2g from modern main board pins.

[@Zlo-USSR]

Gold,Gold,Gold👍👍👍💰💰💰 GOOD!!🤝

[@escrapchannel]

Thanks 👍

[@ROY-sg9go]

Waktu proses denoksing apakalah yang dimasukan? Apakah h2so4 brother

[@escrapchannel]

Hi, apologies I don’t understand the language.

[@ROY-sg9go]

@@escrapchannel What chemicals are included when the denoking process is carried out? what is h2so4

[@escrapchannel]

@ROY-sg9go h2so4 is sulphuric acid

[@saidtdross1988]

How do I deposit gold, large

[@escrapchannel]

Hi, I deposit gold in my safe :)

[@lion9419]

Sir you watch was gold filled scrap I suppose not gold plated please clarify

[@escrapchannel]

Hi, only one of the watches has had a mark “gold filled”. Rest have had no mark or marked as platted with different thickness of the plating between 5 and 20 microns.

[@GOLD9ii]

I have question: 1 step.. ONLY PUT WATCHES to Nitric Acid? and wait about 2hours? nothing next? (heating?, next Acid?). TY

[@escrapchannel]

Hi, reaction of the nitric acid with brass is exothermic, so heating is not needed. Starts slowly but then speeds up. After dissolving 95% of the brass in the cases reaction slows down a lot, so it is good to remove the acid that worked out and put the gold foils into fresh nitric acid to quickly dissolve any remains of brass. No other acids needed.

[@GOLD9ii]

​@@escrapchannel TY again ❤

[@markmitchelloldmanprospect3969]

no one ever shows how to do magnetic stuff can you do a video please

[@escrapchannel]

Hi, sure! I have some reed relays that are magnetic and I was preparing them for a video. Magnetic material is processed easy - just add sulphuric acid to the nitric acid. All base metal dissolves.

[@markmitchelloldmanprospect3969]

@@escrapchannel oh ok that is easy thanks so the magnetic is steel or iron and that is why you use sulphuric acid?

[@escrapchannel]

@@markmitchelloldmanprospect3969 Electronic scrap frequently has nickel and for other materials happens to have iron, correct.

[@johannesthe5th154]

Nice vid. Thank you 👍 According to your yield, I would estimate my 1,165 kg of gold plated watches to get me around 22 grams of gold. 🤔 I sure hope that’s the case 😅

[@escrapchannel]

It was more or less a fair mixture with only one gold filled case marked also as plated (very strange mark), so 1.9% of total weight yield is fine. I’ve seen more and I’ve seen less. All depends on material :)

[@escrapchannel]

By the way I have a video on which I review same cases and I share the marks so you can compare to your mixture.

[@johannesthe5th154]

@@escrapchannel Yes. I saw that a while back thanks. I actually found your channel through that vid 😎👍

[@escrapchannel]

@@johannesthe5th154 👍

[@Rocky-gl3cq]

Pls chemical names

[@escrapchannel]

Hi, I use Nitric acid to dissolve base metal, aqua regia to dissolve gold plating, sulfamic acid to denox and iron sulfate to reduce gold. If other information needed do not hesitate to contact me, please.

[@ErdalGoktas-fh5fe]

Selamunaleyküm kardesim neden yazılarin tamami türkce çeviri degil

[@escrapchannel]

Hi, I have only English subtitles. Turkish language is probably KZbin translation. I don't know why there are no Turkish subtitles for all videos.

[@Gold_Plus]

*Приветствую, дружище! Классная коллекция ручных часов 🔥 46👍!*

[@escrapchannel]

Спасибо!

[@METALLKZ]

Привет 👋🤝 Отличное видео.. Часы хороший материал 👍

[@escrapchannel]

Thank you!

[@saidtdross1988]

grains that are not dust

[@escrapchannel]

Nice foils we have.

[@dimiterdimitrov9526]

Чакаме кондензаторите. Откога ги хвалиш колко много имали.

[@escrapchannel]

Имат 😃

[@escrapchannel]

Не съм се организирал за сериозна работа. Много работа през седмицата и няма сили за лаба през уикенда. А за кондензаторите чувам такива цени напоследък, шок!

[@ЛеликЛелик-к7ж]

Hello Friend 30liek 👍👍🎃

[@escrapchannel]

Thanks!

[@IGOR-interestinghobby]

Привет дружище 🤝

[@escrapchannel]

Спасибо 👍

[@TV-nb1yl]

Привет 👍🔥😲

[@escrapchannel]

Thanks for the support!

[@vickysekhliya6102]

Hi.sir

[@escrapchannel]

Hello

[@GoldRecoveryofficial]

👍🤲👍👍👍👍👍🤲💞💓

[@escrapchannel]

Thanks!

[@bazonis1gp]

laik

[@escrapchannel]

Thanks!