铟萃余液氧化除铁渣对回转窑尾气水脱氟作用研究  

Effect of Oxidation Iron Removal Slag from Indium Raffinate on Defluoridation of Scrubbing Water from Rotary Kiln

作　　者：曾纪术[1] 陆瑶[1] ZENG Ji-shu;LU Yao(Guangxi China.tin Group Co Ltd, Liuzhou 545006, Guangxi, China)

机构地区：[1]广西华锡集团股份有限公司,广西柳州545006

出　　处：《矿冶工程》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)

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.

关 键 词：铟萃余液 氧化除铁渣 回转窑 尾气水 含氟废水 脱氟 

分 类 号：TF8[冶金工程—有色金属冶金]