CIESC Journal ›› 2012, Vol. 63 ›› Issue (2): 658-661.DOI: 10.3969/j.issn.0438-1157.2012.02.046
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CHEN Bing1,2，SHEN Xiaoyi1,GU Huimin1,SUN Yi1,LI Deguan1,ZHAI Yuchun1,MA Peihua3
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陈兵1,2，申晓毅1,顾惠敏1,孙毅1,李德官1,翟玉春1,马培华3
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Abstract: Taking NaOH as raw material, zinc oxide ore was treated by roasting method. ZnO, SiO2 and PbO reacted with alkali first and then went into solution after digestion process. In this paper, orthogonal experiment method was used to optimize technological conditions for extraction of ZnO from zinc oxide ore when roasted with alkali. The optimized conditions are mass ratio of ore and alkali 1:6, holding temperature 400℃, holding time 4h. Under these conditions, the extraction rate of ZnO is 82.4%. The essential components of zinc extracted slag are stishovite, Na2ZnSiO4, whose generation impedes the extraction of ZnO, and so on. The morphology of slag is irregular, the size of particles is nonuniform.
Key words: zinc oxide ore, NaOH roasting, ZnO extraction
摘要： 采用氢氧化钠焙烧法处理氧化锌矿，可使矿物中的ZnO、SiO2和PbO发生反应溶于水得到混合溶液。本文采用正交实验优化了碱焙烧氧化锌矿提取氧化锌的的工艺条件，得到优化的工艺条件为矿碱质量比1:6、焙烧温度400℃、保温时间4h，在优化工艺条件下ZnO的提取率达到82.4%。提锌渣主要成分为超石英和Na2ZnSiO4等，Na2ZnSiO4的存在影响了ZnO的提取率进一步提高。提锌渣形貌不规则，颗粒大小不均。
关键词: 氧化锌矿, 氢氧化钠焙烧, 提氧化锌
CLC Number:
TF 813
CHEN Bing，SHEN Xiaoyi,GU Huimin,SUN Yi,LI Deguan,ZHAI Yuchun,MA Peihua. Extraction of ZnO from zinc oxide ore by alkali roasting method[J]. CIESC Journal, 2012, 63(2): 658-661.
陈兵，申晓毅,顾惠敏,孙毅,李德官,翟玉春,马培华. 碱焙烧法由氧化锌矿提取ZnO[J]. 化工学报, 2012, 63(2): 658-661.
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https://hgxb.cip.com.cn/EN/Y2012/V63/I2/658
