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The removing of fluorine from the new liquid of the zinc smelting system by chemical precipitation method using a new type of composite defluorination agent D-3 was studied. The effects of reaction temperature, reaction time, dosage of defluorination agent added and the initial pH of the new solution on the defluorination rate were investigated. The results show that the reaction time has the greatest influence on the defluorination rate, followed by the dosage of defluorination agent, then the reaction temperature, and the initial pH of the fluorine-containing new solution has the least influence. Based on the results of the single-factor test and combined with the actual production situation, the optimal fluoride removal conditions are determined as follows:the addition amount of D-3 defluorination agent is 40 times, the reaction temperature is 70 ℃, the reaction time is 1.0 h, and when the initial pH of the new fluorine-containing solution is approximately 5.0, the defluorination rate under the conditions is approximately 75%, and the residue rate is 12%. When the fluorine content in the new liquid exceeds 200 mg/L, the defluorination rate exceeds 75%, and the defluorination effect is better.

, authors=Peng CHEN, authorsList=Peng CHEN, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1311349786322760045, articleId=1311349785790083435, tenantId=1146029695717560320, journalId=1146120122248306696, language=CN, title=用一种新型复合除氟剂从湿法炼锌系统中脱除氟, columnId=1152626641328501305, journalTitle=湿法冶金, columnName=试验研究, runingTitle=null, highlight=null, articleAbstract=

研究了采用化学沉淀法用一种新型复合除氟剂D-3从锌冶炼系统新液中脱除氟。考察了反应温度、反应时间、除氟剂加入量，新液初始pH对除氟率的影响。结果表明：反应时间对除氟率的影响最大，其次是除氟剂加入量，反应温度次之，含氟新液初始pH的影响最小；基于单因素试验结果，并结合生产实际情况，确定最佳除氟条件为D-3加入量40倍，反应温度70 ℃，反应时间1.0 h，含氟新液初始pH≈5.0，该条件下除氟率约为75%，渣率为12%；新液含氟超过200 mg/L时，除氟率超过75%，除氟效果更佳。

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陈鹏（1979—），男，硕士，高级工程师，主要研究方向为湿法冶金技术管理。

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陈鹏（1979—），男，硕士，高级工程师，主要研究方向为湿法冶金技术管理。

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