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投稿时间:2019-07-31 修订日期:2019-09-17
投稿时间:2019-07-31 修订日期:2019-09-17
中文摘要: 本文分析了典型二次含砷物料化学成分特点,概括了当前有色冶炼工业中产生的二次含砷物料碱法脱砷工艺及原理,主要包括湿法脱砷工艺和火法-湿法联合脱砷工艺。其中碱性湿法脱砷工艺常用NaOH单碱浸出、NaOH-Na2S混碱浸出和NaOH+Na2S混碱两段浸出三种体系,并采用双氧水、加压、曝气、微波、球磨等氧化手段强化砷的浸出;火法-湿法联合脱砷工艺主要有低温碱性熔炼-水浸、焙烧预氧化-碱性浸出以及低温碱性焙烧-热水溶浸工艺,其中低温碱性焙烧-热水溶浸工艺选择性脱砷效果好,物料普适性广。结合现有研究指出碱法脱砷工艺存在问题及二次含砷物料无害化、资源化研究方向。
Abstract:In this paper, the chemical composition characteristics of typical secondary arsenic-bearing materials are analyzed. The alkaline dearsenization process of secondary arsenic-bearing materials produced in nonferrous smelting industry and its principle are summarized, including hydro-dearsenization process or combined pyro-hydro dearsenization process. Three alkaline hydro-dearsenization leaching systems are commonly used: NaOH single- alkali leaching, NaOH-Na2S mixed-alkali leaching and NaOH+Na2S mixed-alkali two-stage leaching. Hydrogen peroxide, pressure, aeration, microwave, ball milling and other oxidation methods are used to enhance arsenic leaching from secondary arsenic-bearing materials. The combined pyro-hydro dearsenization process mainly includes low-temperature alkaline smelting-water leaching, pre-oxidation roasting -alkaline leaching and low-temperature alkaline roasting-hot water leaching. Low-temperature alkaline roasting-hot water leaching process has good selectivity in arsenic removal and wide applicability of secondary arsenic-bearing materials. Based on all the existing research, the existing problems of alkaline dearsenization technology and the research direction of harmless treatment and resource utilization of secondary arsenic-bearing materials are pointed out.
keywords: secondary arsenic-bearing materials alkaline dearsenization technology selective removal of arsenic harmless treatment resource utilization
文章编号:20190731001 中图分类号:X758 文献标志码:
基金项目:2018年度甘肃省高等学校科研项目一般项目(2018A-291);2017广东普通高校创新团队项目(2017GKCXTD004);2018年广东环境保护工程职业学院院长基金青年项目(K630118122012)
作者 | 单位 | |
魏晓玲 | 白银矿冶职业技术学院 | 1248572649@qq.com |
王晓阳 | 广东环境保护工程职业学院 | xywang_gdhbxy@163.com |
王文祥* | 广东环境保护工程职业学院 | wwx110@163.com |
方红生 | 广东环境保护工程职业学院 | 1206177685@qq.com |
刘润琪 | 白银矿冶职业技术学院 | 396655256@qq.com |
引用文本:
魏晓玲,王晓阳,王文祥,方红生,刘润琪.有色冶炼二次含砷物料碱法脱砷工艺现状[J].矿冶,2020,29(2):.
魏晓玲,王晓阳,王文祥,方红生,刘润琪.有色冶炼二次含砷物料碱法脱砷工艺现状[J].矿冶,2020,29(2):.