Spent Lead-Acid Battery Recycling via Reductive Sulfur-Fixing Smelting and Its Reaction Mechanism in the PbSO 4 -Fe 3 O 4 -Na 2 CO 3 -C System

Yun Li, Shenghai Yang, Pekka Taskinen, Jing He, Yongming Chen, Chaobo Tang, Yuejun Wang, Ari Jokilaakso*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

1 Sitaatiot (Scopus)
117 Lataukset (Pure)

Abstrakti

An innovative and environmentally friendly lead-acid battery paste recycling method is proposed. The reductive sulfur-fixing recycling technique was used to simultaneously extract lead and immobilize sulfur. SO 2 emissions and pollution were significantly eliminated. In this work, the detailed lead extraction and sulfur-fixing mechanisms in the PbSO 4 -Fe 3 O 4 -Na 2 CO 3 -C system were investigated thermodynamically and experimentally, and the phase transformation and microstructural evolution processes characterized. In addition, a series of bench-scale pilot experiments were carried out to confirm the feasibility of the technique. The results show that the lead extraction and sulfur-fixing reactions followed the shrinking unreacted-core model. The recycling products were separated into three distinct layers: slag, matte, and crude lead bullion. Primary recoveries of 96.2% for lead and 98.9% for sulfur were obtained. The purity of the crude lead bullion was 98.6 wt.%. Sulfur was fixed in the solidified matte as FeS and NaFeS 2 .

AlkuperäiskieliEnglanti
Sivut2368-2379
JulkaisuJOM
Vuosikerta71
Numero7
DOI - pysyväislinkit
TilaJulkaistu - 1 tammikuuta 2019
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Sormenjälki Sukella tutkimusaiheisiin 'Spent Lead-Acid Battery Recycling via Reductive Sulfur-Fixing Smelting and Its Reaction Mechanism in the PbSO <sub>4</sub> -Fe <sub>3</sub> O <sub>4</sub> -Na <sub>2</sub> CO <sub>3</sub> -C System'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

  • Projektit

    • 1 Päättynyt

    CMEco (Jokilaakso)

    Rämä, M., Rantataro, J., Hellsten, N., Jokilaakso, A., Klemettinen, L., Rinne, M. & Sibarani, D.

    01/01/201731/12/2019

    Projekti: Business Finland: Other research funding

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