典型铅冶炼企业砷锑烟尘资源化制备Sb2O3

Resourceful preparation of Sb2O3 in hazardous As-Sb dust from typical lead smelter

李绍雄 ¹孔祥峰 ¹高哲 ¹和玉虹 ²马保中 ³杨佳 ¹杨斌 ¹刘大春¹

扫码查看

作者信息

1. National Engineering Research Center of Vacuum Metallurgy,Kunming University of Science and Technology,Kunming 650093,China;Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China
2. Yunnan University of Finance and Economics,Kunming 650221,China
3. School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China
折叠

摘要

砷锑烟尘是铅冶炼企业产生的一种高锑高砷固体粉末,对冶炼区环境构成了重大威胁.如何实现砷锑烟尘的资源化回收和无害化处理,是当前重金属冶炼企业所面临的共性难题.本文提出了一种砷锑烟尘真空气化-冷凝清洁制备Sb2O3的新方法.ICP结果表明,砷锑烟尘经低温、高温两段真空气化-冷凝处理,Sb2O3含量由73.96%升高至91.35%,As元素含量由18.10%降低至6.20%,其余杂质含量占比不超过0.17%.XRD结果表明,锑以Sb2O3形态气化迁移-冷凝,杂质砷以As2O3形态迁移挥发,两物相分离效果显著.SEM和EPMA分析表明,制备出的Sb2O3产品颗粒粒径分布均匀.整个过程废气、废水零排放,无试剂消耗,对铅冶炼企业周边生态环境的影响轻微.

Abstract

Hazardous arsenic antimony dust(HAAD),a perilous by-product with significant antimony and arsenic concentrations generated in lead 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 to synthesize Sb2O3.ICP analysis evidenced an enhancement in the purity of the Sb2O3 product from an initial 73.96%to 91.35%,with a concomitant reduction in As impurities from 18.10%to 6.20%,and residual contaminants approximating 0.17%following a dual-phase vacuum process.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.This methodology underscores its environmental compatibility,characterized by zero gaseous effluent,absence of wastewater expulsion,and elimination of reagent usage,thereby mitigating environmental detriments.

关键词

重金属处理/锑/砷/危险废物/铅冶炼/清洁利用

Key words

heavy metal disposal/antimony/arsenic/hazardous waste/lead smelting/cleaner utilization

引用本文复制引用

基金项目

国家重点研发计划(2022YFC2904204)

国家自然科学基金(52364048)

国家自然科学基金(52004115)

Yunnan Fundamental Research Projects,China(202101BE070001-019)

Yunnan Fundamental Research Projects,China(202101AT070116)

Yunnan Fundamental Research Projects,China(202001AU070045)

Yang Bin Scientist Studio of Yunnan Province,China(2020)()

Yunnan Talents Support Project,China(2022)()

Yunnan Key Science and Technology Special Projects,China(202302AB080002)

Henan Key Science and Technology Special Projects,China(231100320300)

High-level Talent Construction of Kunming University of Science and Technology,China(KKZ7201952006)

出版年

2024

中南大学学报(英文版)

中南大学

中南大学学报(英文版)

CSTPCDEI

影响因子：0.47

ISSN：2095-2899

参考文献量34

段落导航