电炉渣铬浸出行为及资源化利用风险分析  

STUDY ON LEACHING BEHAVIOR OF CHROMIUM IN EAF SLAG AND RISK ANALYSIS OF BENEFICIAL REUSE

作　　者：甄常亮[1] 那贤昭[1] 齐渊洪[1] 赵凯[1] 吕岩[1] 

机构地区：[1]钢铁研究总院先进钢铁流程及材料国家重点实验室,北京100081

出　　处：《环境工程》2012年第4期93-95,共3页Environmental Engineering

基　　金：国家高技术研究发展计划(2009AA064003)

摘　　要：不锈钢电炉渣含有剧毒的CaCrO4,铬的浸出行为研究,对电炉渣的处置及资源化利用过程中的风险评估具有十分重要的意义。对电炉渣中铬的浸出特征进行了分析,标准浸出程序结果表明,电炉渣Cr和Cr(Ⅵ)浸出量分别为4.68 mg/L和1.74 mg/L,高于HJ/T 301—2007规定的限值,不宜直接应用于建材领域;电炉渣铬浸出受浸提剂pH影响显著,Cr在中性环境下浸出量最少,酸性和碱性环境都有利于Cr的浸出;Cr(Ⅵ)的浸出量随pH值增大而增加。CaCrO4 in EAF slag from stainless steel process is hypertoxic, as the importance to risk assessment of EAF slag during disposal and beneficial reuse, the leaching behavior of Cr is evaluated. Leaching characteristic of Cr in EAF slag is analysed,the results showed that the leaching amount of Cr and Cr （ Ⅵ ） is 4..68mg/L and 1.74mg/L in standard leaching process,this is higher than specified limits in HJ/T 301--2007, so EAF slag should not be directly applied to the field of building materials. The leaching behavior of EAF slag is affected by the pH value of extraetant significantly,leaching amount of Cr in neutral condition is the lowest, and promoted in acid and alkaline conditions,leaching amount of Cr（ Ⅵ ） is advanced with the increase of pH value.

关 键 词：电炉渣 资源化利用 铬 六价铬 浸出 

分 类 号：X758[环境科学与工程—环境工程]