A novel approach to synthesizing sodium antimonate and recovering lead and zinc from arsenic-bearing antimony white

Tang, Zanlang; Tang, Xincun; Xiao, Zeyu; Liu, Haonan

doi:10.1016/j.mineng.2023.108008

Cited by 5 publications

(1 citation statement)

References 22 publications

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“…Despite its substantial throughput (Zhao et al 2021), the pyrometallurgical method is marred by drawbacks including an extended production timeline, considerable environmental impact, and intensive energy requisites. Conversely, the hydrometallurgical technique employs leaching to extract arsenic (Tang et al 2023;Gu et al 2019), utilizing procedures like solvent extraction, ion exchange, precipitation, and adsorption. This approach necessitating sophisticated equipment and extensive leaching agent application, is prone to generating detrimental emissions and effluents, thereby imposing significant environmental compliance obligations (Gao et al 2023).…”

Section: Introductionmentioning

confidence: 99%

Resourceful cleaner preparation of Sb2O3 with vacuum vaporization- condensation from hazardous arsenic antimony dust

Li,

Kong,

Fan

et al. 2024

Preprint

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Hazardous arsenic antimony dust (HAAD), a perilous by-product with significant antimony and arsenic concentrations generated in smelters, poses a substantial environmental threat. The imperative of resource recycling and the innocuous processing of HAAD stand as prevalent challenges and pressing priorities. This study introduces an innovative vacuum vaporization-condensation technique, capitalizing on the intrinsic merits of vacuum metallurgy, to synthesize Sb2O3. ICP analysis evidenced an enhancement in the purity of the Sb2O3 product from an initial 73.96–91.35%, with a concomitant reduction in As impurities from 18.10–6.20%, and residual contaminants approximating 0.17% following a dual-phase vacuum vaporization-condensation process at divergent temperatures. XRD assessments affirmed the feasibility of direct Sb2O3 synthesis via vapor-phase migration and condensate amalgamation, achieving substantial As2O3 impurity diminution. SEM and EPMA observations underscored a homogenous particulate morphology in the refined Sb2O3. Incomplete As extraction from the refined Sb2O3 product was attributed to the persistence of (As, Sb2)O4.5, accompanied by partial Sb attrition throughout the fabrication sequence. The suboptimal partitioning efficacy of (As, Sb2)O4.5 warrants further investigation. This methodology underscores its environmental compatibility, characterized by zero gaseous effluent, absence of wastewater expulsion, and elimination of reagent usage, thereby mitigating environmental detriments and paving the way for the sustainable exploitation of HAAD.

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