Honghu Tang, Bingjian Liu, Mengshan Li, Qiancheng Zhang, Xiongxing Zhang,  and Feng Jiang, Cooperative effect of sodium lauryl sulfate collector and sodium pyrophosphate depressant on the flotation separation of lead oxide minerals from hematite, Int. J. Miner. Metall. Mater., 31(2024), No. 9, pp. 1975-1984. https://doi.org/10.1007/s12613-023-2815-2
Cite this article as:
Honghu Tang, Bingjian Liu, Mengshan Li, Qiancheng Zhang, Xiongxing Zhang,  and Feng Jiang, Cooperative effect of sodium lauryl sulfate collector and sodium pyrophosphate depressant on the flotation separation of lead oxide minerals from hematite, Int. J. Miner. Metall. Mater., 31(2024), No. 9, pp. 1975-1984. https://doi.org/10.1007/s12613-023-2815-2
Research Article

Cooperative effect of sodium lauryl sulfate collector and sodium pyrophosphate depressant on the flotation separation of lead oxide minerals from hematite

+ Author Affiliations
  • Corresponding author:

    Feng Jiang    E-mail: feng_jiang@csu.edu.cn

  • Received: 5 September 2023Revised: 20 December 2023Accepted: 22 December 2023Available online: 27 December 2023
  • As a cornerstone of the national economy, the iron and steel industry generates a significant amount of sintering dust containing both valuable lead resources and deleterious elements. Flotation is a promising technique for lead recovery from sintering dust, but efficient separation from Fe2O3 is still challenging. This study investigated the cooperative effect of sodium lauryl sulfate (SLS, C12H25SO4Na) and sodium pyrophosphate (SPP, Na4P2O7) on the selective flotation of lead oxide minerals (PbOHCl and PbSO4) from hematite (Fe2O3). Optimal flotation conditions were first identified, resulting in high recovery of lead oxide minerals while inhibiting Fe2O3 flotation. Zeta potential measurements, Fourier transform infrared spectroscopy (FT-IR) analysis, adsorption capacity analysis, and X-ray photoelectron spectroscopy (XPS) studies offer insights into the adsorption behaviors of the reagents on mineral surfaces, revealing strong adsorption of SLS on PbOHCl and PbSO4 surfaces and remarkable adsorption of SPP on Fe2O3. The proposed model of reagent adsorption on mineral surfaces illustrates the selective adsorption behavior, highlighting the pivotal role of reagent adsorption in the separation process. These findings contribute to the efficient and environmentally friendly utilization of iron ore sintering dust for lead recovery, paving the way for sustainable resource management in the iron and steel industry.
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