工程科学学报，第37卷，第9期：1138-1142,2015年9月 Chinese Journal of Engineering,Vol.37,No.9:1138-1142,September 2015 D0l:10.13374/j.issn2095-9389.2015.09.005:http://journals.ustb.edu.cn 铁矾渣微波硫酸化焙烧水浸液的深度除铁 黎氏琼春12)，刘超23》，巨少华12》四，周烈兴12》，彭金辉2，王涵睿2》 1)微波能工程应用及装备技术国家地方联合工程实验室，昆明6500932)云南省特种治金重点实验室，昆明650093 3)昆明理工大学治金与能源工程学院，昆明650093 ☒通信作者，E-mail:shj_200801@126.com 摘要采用微波低温疏酸化焙烧一水浸和针铁矿除铁方法将Z、Cu等富集到浸出液中，P%和Ag富集到浸出渣中，使有价 金属得到清洁的回收利用.研究了上述工艺中浸出液除铁的优化工艺条件，探究了反应体系的pH值、浸出液单次滴加量、浸 出液的铁含量等因素对除铁效果的影响，并采用X射线衍射分析、扫描电子显微镜观察等手段对得到的沉淀渣进行了表征. 研究获得的优化实验条件为：以200mL的0.01molL-ZS0,溶液为底液，晶种添加量为20gL,除铁体系pH值控制在3 左右，温度90℃，每隔5mn滴加3mL水浸液（保持反应体系中铁的浓度<1gL).在此条件下，除铁后溶液残铁量仅为 0.065gL',去除率可达99.3%，达到了深度除铁效果.除铁过程中，Zn的损失率仅为4.1%. 关键词铁矾渣：除铁；硫酸化：培烧：浸出：锌冶金 分类号TF813 Deep removal of iron from jarosite residue after acid mixing,microwave roasting and water leaching LE Thi-Quynh-Xuan!2),LIU Chao2),JU Shao-hua)ZHOU Lie-xing,PENG Jin-hui),WANG Han-rui) 1)National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology,Kunming 650093,China 2)Yunnan Provincial Key Laboratory of Intensification Metallurgy,Kunming 650093,China 3)Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China Corresponding author,E-mail:shj_200801@126.com ABSTRACT A method combining microwave sulphation low-temperature roasting-water immersion and goethite processes was used to gain clean and valuable metals,such as Zn and Cu enriching to the leach liquor and Pb and Ag enriching to the leach residue.The process conditions to remove iron by using water immersion were optimized,and the iron removal effect was investigated when the pH value,the added amount of the leach liquor every time and the iron concentration in the leach liquor changed.X-ray diffraction and scanning electron microscopy were used to characterize the iron precipitates.It is found that with 200mL of 0.01 mol-LZnSO solu- tion as a base solution,the iron removal rate can be reach to 99.3%and the residual iron concentration in the solution is about 0.065 gL under the optimum conditions that the dosage of the goethite crystal seed is 20gL,the pH value is 3,the temperature is 90 C and 3mL leach solution is added per 5min (to keep the iron concentration in the solution <1gL).In the iron removal process, the loss rate of Zn is only 4.1%. KEY WORDS jarosite:iron removal:sulphation;roasting:leaching:zinc metallurgy 传统湿法炼锌“焙烧一浸出一净化一电积”工艺 过该工艺生产四.从湿法炼锌的浸出液中除铁的方法 在锌治炼中占绝对优势，世界上有85%~90%的锌通 有黄钠（钾）铁矾法、针铁矿法、赤铁矿法等回.我国湿 收稿日期：2014-06-19 基金项目：国家自然科学基金资助项目(51264022)：云南省应用基础研究计划项目(KKSY201232038)工程科学学报，第 37 卷，第 9 期: 1138--1142，2015 年 9 月 Chinese Journal of Engineering，Vol． 37，No． 9: 1138--1142，September 2015 DOI: 10． 13374 /j． issn2095--9389． 2015． 09． 005; http: / /journals． ustb． edu． cn 铁矾渣微波硫酸化焙烧水浸液的深度除铁 黎氏琼春1，2，3) ，刘 超1，2，3) ，巨少华1，2，3) ，周烈兴1，2) ，彭金辉1，2) ，王涵睿1，2，3) 1) 微波能工程应用及装备技术国家地方联合工程实验室，昆明 650093 2) 云南省特种冶金重点实验室，昆明 650093 3) 昆明理工大学冶金与能源工程学院，昆明 650093  通信作者，E-mail: shj_200801@ 126． com 摘 要 采用微波低温硫酸化焙烧--水浸和针铁矿除铁方法将 Zn、Cu 等富集到浸出液中，Pb 和 Ag 富集到浸出渣中，使有价 金属得到清洁的回收利用． 研究了上述工艺中浸出液除铁的优化工艺条件，探究了反应体系的 pH 值、浸出液单次滴加量、浸 出液的铁含量等因素对除铁效果的影响，并采用 X 射线衍射分析、扫描电子显微镜观察等手段对得到的沉淀渣进行了表征． 研究获得的优化实验条件为: 以 200 mL 的 0. 01 mol·L － 1 ZnSO4溶液为底液，晶种添加量为 20 g·L － 1 ，除铁体系 pH 值控制在 3 左右，温度 90 ℃，每隔 5 min 滴加 3 mL 水浸液( 保持反应体系中铁的浓度 ＜ 1 g·L － 1 ) ． 在此条件下，除铁后溶液残铁量仅为 0. 065 g·L － 1 ，去除率可达 99. 3% ，达到了深度除铁效果． 除铁过程中，Zn 的损失率仅为 4. 1% ． 关键词 铁矾渣; 除铁; 硫酸化; 焙烧; 浸出; 锌冶金 分类号 TF813 Deep removal of iron from jarosite residue after acid mixing，microwave roasting and water leaching LE Thi-Quynh-Xuan1，2，3) ，LIU Chao 1，2，3) ，JU Shao-hua1，2，3)  ，ZHOU Lie-xing1，2) ，PENG Jin-hui 1，2) ，WANG Han-rui 1，2，3) 1) National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology，Kunming 650093，China 2) Yunnan Provincial Key Laboratory of Intensification Metallurgy，Kunming 650093，China 3) Faculty of Metallurgical and Energy Engineering，Kunming University of Science and Technology，Kunming 650093，China  Corresponding author，E-mail: shj_200801@ 126． com ABSTＲACT A method combining microwave sulphation low-temperature roasting--water immersion and goethite processes was used to gain clean and valuable metals，such as Zn and Cu enriching to the leach liquor and Pb and Ag enriching to the leach residue． The process conditions to remove iron by using water immersion were optimized，and the iron removal effect was investigated when the pH value，the added amount of the leach liquor every time and the iron concentration in the leach liquor changed． X-ray diffraction and scanning electron microscopy were used to characterize the iron precipitates． It is found that with 200 mL of 0. 01 mol·L － 1 ZnSO4 solu￾tion as a base solution，the iron removal rate can be reach to 99. 3% and the residual iron concentration in the solution is about 0. 065 g·L － 1 under the optimum conditions that the dosage of the goethite crystal seed is 20 g·L － 1 ，the pH value is 3，the temperature is 90 ℃ and 3 mL leach solution is added per 5 min ( to keep the iron concentration in the solution ＜ 1 g·L － 1 ) ． In the iron removal process， the loss rate of Zn is only 4. 1% ． KEY WOＲDS jarosite; iron removal; sulphation; roasting; leaching; zinc metallurgy 收稿日期: 2014--06--19 基金项目: 国家自然科学基金资助项目( 51264022) ; 云南省应用基础研究计划项目( KKSY201232038) 传统湿法炼锌“焙烧—浸出—净化—电积”工艺 在锌冶炼中占绝对优势，世界上有 85% ～ 90% 的锌通 过该工艺生产［1］． 从湿法炼锌的浸出液中除铁的方法 有黄钠( 钾) 铁矾法、针铁矿法、赤铁矿法等［2］． 我国湿