Recovery of gold&silver from jewelry waste by flotation method

A. Demirağ, F. Burat*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The most important metals in the jewelry sector are undoubtedly gold and silver. As a result of workmanship work done in the jewelry industry, the tiny metal and jewel fragments and metallic powders are scattered. Given the prices of gold and silver on the market, the dust that emanates from these workshops is of great importance. Gold recycling has become as important as raw material production within the mass market and gold production industry. In 2016, 29% of the world gold supply has been obtained through recycled gold production. Waste derived from jewelry activity is included in this category, and represents an essential component of this percentage. In the scope of this study, the recovery possibilities of Au and Ag from jewelry sweeps floor sample was investigated using flotation method. In the experiments, optimum pH value, particle size, the effect of dispersant, type and amount of reagent were investigated. As a result of these studies, it was determined that the optimum pH value was 6.5 and the particle size was -212 microns. It was observed that the most suitable reactive combination was Aero 242 and Aerophine 3418A and Na 2 SiO 3 has no positive effect on recovery of Au and Ag as a dispersant agent. As a result of tests, a final concentrate containing 268 ppm Au and 2122 ppm Ag was obtained with 81.4% and 74.5% recovery respectively.

Original languageEnglish
Title of host publicationIMPC 2018 - 29th International Mineral Processing Congress
PublisherCanadian Institute of Mining, Metallurgy and Petroleum
Number of pages10
ISBN (Electronic)9787030227119
Publication statusPublished - 2019
Event29th International Mineral Processing Congress, IMPC 2018 - Moscow, Russian Federation
Duration: 17 Sept 201821 Sept 2018

Publication series

NameIMPC 2018 - 29th International Mineral Processing Congress


Conference29th International Mineral Processing Congress, IMPC 2018
Country/TerritoryRussian Federation

Bibliographical note

Publisher Copyright:
© IMPC 2018 - 29th International Mineral Processing Congress. All rights reserved.


We would like to thank SAY Ramat Kuyumculuk San. Ltd for providing sample and financial support for chemical analysis.

FundersFunder number
Slovenská Akadémia Vied


    • Flotation
    • Gold
    • Jewelry
    • Silver
    • Waste


    Dive into the research topics of 'Recovery of gold&silver from jewelry waste by flotation method'. Together they form a unique fingerprint.

    Cite this