摘要
采用广西某公司提铟流程中产生的萃余液氧化除铁渣作为除氟剂,对回转窑尾气洗水进行除氟处理,在溶液初始pH≈5.0,除氟剂添加量为理论量的5倍,温度40℃,机械搅拌条件下,尾气水中的氟离子浓度降至50 mg/L以下,氟离子脱除率达90%以上。该脱氟技术应用于工业试验,溶液中氟离子浓度由370 mg/L下降至50 mg/L以下。
The iron removal slag from indium raffinate generated from indium flowsheet in one Guangxi company was taken as a fluoride removal agent in defluorination of scrubbing water from rotary kiln. With an initial pH of solution around 5.0, the addition of fluoride removal agent 5 times as much as the theoretical amount and temperature at 40 ℃, the fluorine ion concentration in the solution was decreased to less than 50 mg/ L after mechanical agitation, resulting in the fluorine ion removal rate exceeding 90%. This defluorination technique was applied into commercial experiment, leading to a satisfactory result, with fluorine ion concentration in the solution reduced to less than 50 mg/ L from 370 mg/ L.
作者
曾纪术
陆瑶
ZENG Ji-shu;LU Yao(Guangxi China.tin Group Co Ltd, Liuzhou 545006, Guangxi, China)
出处
《矿冶工程》
CAS
CSCD
北大核心
2019年第1期95-97,共3页
Mining and Metallurgical Engineering
基金
"十二五"国家科技支撑计划项目(2015BAB12B03)
关键词
铟萃余液
氧化除铁渣
回转窑
尾气水
含氟废水
脱氟
indium raffinate
slag from iron removal by oxidation
rotary kiln
scrubbing water
fluoride.containing wastewater
defluorination
作者简介
曾纪术(1974-),男,湖南洞口人,博士,高级工程师,主要从事有色金属冶炼和深加工研究.
