Sulfidization performance of hemimorphite surface in sodium sulfide system and identification of sulfidization products

The sulfidization performance and mechanism of hemimorphite surface in a sodium sulfide (Na2S) system were revealed, and surface sulfidization products were identified through various analytical methods. The results showed that Na2S concentration had a significant effect on the sulfidization of the...

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Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2024-02, Vol.34 (2), p.629-642
Main Authors: ZHANG, Ga, WANG, Mei-li, HE, Yong-xin, WANG, Han, FENG, Qi-cheng
Format: Article
Language:English
Subjects:
hemimorphite
Na2S concentration
polysulfide
sulfidization performance
zinc sulfide species
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Summary:The sulfidization performance and mechanism of hemimorphite surface in a sodium sulfide (Na2S) system were revealed, and surface sulfidization products were identified through various analytical methods. The results showed that Na2S concentration had a significant effect on the sulfidization of the hemimorphite surface. An increase in Na2S concentration could promote the interaction between S species in the pulp and mineral surfaces, thereby increasing the content of sulfidization products and hydrophobicity of hemimorphite surface. XPS and ToF-SIMS analyses showed that the sulfidization product was not the sole monosulfide on hemimorphite surfaces and it was composed of monosulfide (S2−) and polysulfide (Sn2−). The content of polysulfide on mineral surface increased with an increase in the Na2S concentration, which improves the activity of sulfidization products on hemimorphite surface.
ISSN:1003-6326
DOI:10.1016/S1003-6326(23)66423-4