Experimental research on the behaviour of WEEE scrap in flash smelting settler with copper concentrate and synthetic slag

Xingbang Wan, Ari Jokilaakso, Ise Iduoze, Hürman Eriç, Petri Latostenmaa

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu

3 Sitaatiot (Scopus)

Abstrakti

The target of present investigation is to reveal the behavior of WEEE metallic elements through experiments in a lab-scale furnace related to flash furnace smelting. WEEE materials are added to the laboratory furnace along with chalcopyrite ore and synthetic slag to monitor the reaction of metallic elements and their migration simulating what is happening in the flash smelting furnace. The concentration of elements in different phases as a function of time are determined and analyzed with the aim of creating kinetic data and rate equations for their reactions. The minor and precious metals of PCBs prefer to dissolve into the matte phase and even form their own metallic phase. No PCB metals are found in the slag phase, signaling that dissolution of valuable metals into the matte is maintained even with higher PCB ratios. However, loss of these metals to slag is dependent on matte separation from slag, as slag may entrain matte droplets and PCB metals. In the PCB droplets, sulphidation reactions of metallic copper and possibly of other minor elements will help increase the recovery of precious metals (PMs) frequently concentrated in these alloy areas. These experimental results also show that the addition of PCB pieces into furnace may decrease the final matte grade while potentially accelerating initial matte grade increase.

AlkuperäiskieliEnglanti
OtsikkoProceedings of the 10th European Metallurgical Conference, EMC 2019
KustantajaGDMB Verlag GmbH
Sivut1137-1150
Sivumäärä14
ISBN (elektroninen)9783940276896
TilaJulkaistu - 2019
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaEuropean Metallurgical Conference - Congress Center Düsseldorf Süd , Düsseldorf, Saksa
Kesto: 23 kesäkuuta 201926 kesäkuuta 2019
Konferenssinumero: 10
https://emc.gdmb.de

Conference

ConferenceEuropean Metallurgical Conference
LyhennettäEMC
MaaSaksa
KaupunkiDüsseldorf
Ajanjakso23/06/201926/06/2019
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