No passwords, No popups, No cost, No AI:
we earn from 'affiliate link' purchases, making the site possible

Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

finishing.com -- The Home Page of the Finishing Industry

  The authoritative public forum
  for Metal Finishing since 1989

-----

How to Recover Silver and cadmium from used HNO3

March 21, 2010

Dear All,

I want to segregate the gold,silver, cadmium and copper metals from used nitric acid in traditional jewelry work shops.

Thanks & Regards

Siva Krishna
hobbyist - Vijayawada, Andra Pradesh, India

Try an internet search for "electrowinning".

Jon Barrows, MSF, EHSSC
GOAD Company

Independence, Missouri

March 22, 2010

I have simple process for ag recovery.u add NaCl or HCl to precipitate AgCl. filter it ,wash it very well to remove acid contents (wash with hot water). take it in bucket and add NaOH and then glucose powder. you will get cement silver. wash well to remove NaOH and carbon components. then dry it and melt it for 965 °C.

Bhupesh Mulik
jewellery - Mumbai, India
April 22, 2010

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: