4. Fate of non-metallic fractions

The nature of the materials used to manufacture electronic boards depends on their application. Two commonly encountered compositions are fiberglass reinforced with epoxy resin, and cellulose paper reinforced with phenolic resin.

Xu's group describes the preparation of a plate from the non-metallic residues from printed circuit boards . First, the electronic boards are crushed, then the copper fraction contained is separated by electrostatic sorting. The non-metallic fractions are reduced to a particle size of less than 0.3 mm. The powder obtained is ground for 15 minutes and then mixed with various...

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Fate of non-metallic fractions

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Conclusion and outlook

Bibliography

(1) - COLLINS (T.), HAGMANN (M.) - Une initiative de l'ONU en faveur de l'amélioration du recyclage des déchets électroniques. - EMPA (2007). https://www.empa.ch/documents/56164/296590/a592-2007-03-07-fr-01+MM-ewaste.pdf

Regulations

Articles R543-172 modified by decree no. 2021-1213 of September 22, 2021 – art. 1, and R543-173 modified by decree no. 2020-1725 of December 29, 2020 – art. 4, section 10 of the Environment Code concerning electrical and electronic equipment.

Patents

Process for extracting and recovering gold and/or one or more platinoids present in an acidic aqueous phase S69999 FR DEL-P, January 23, 2020.

Methods for extracting and recovering tantalum present in an acidic aqueous phase by means of an ionic liquid, and use of such an ionic liquid to extract tantalum, FR3040060, February 17, 2017.