王冲,范兴祥,李英伟,徐刚芳,杨世莹.氧化焙烧碲化铜渣—碱浸碲试验[J].有色金属(冶炼部分),2019(3):40-43.
氧化焙烧碲化铜渣—碱浸碲试验
Study on Alkali Leaching Telluride from Oxidizing Roasted Copper Telluride Slag
投稿时间:2018-12-06  修订日期:2018-12-13
DOI:doi:10.3969/j.issn.1007-7545.2019.03.010
中文关键词:  氧化焙烧  碲化铜渣  碱浸  碲浸出率
英文关键词:oxidizing roasting  copper telluride slag  alkali leaching  tellurium leaching rate
基金项目:共伴生有色金属资源加压湿法冶金技术国家重点实验室开放课题基金项目(yy20160016)
              
作者单位
王冲 中国铜业有限公司
范兴祥 昆明市稀散及贵金属资源综合利用重点实验
李英伟 云南铜业股份有限公司西南铜业分公司
徐刚芳 云南铜业股份有限公司西南铜业分公司
杨世莹 云南铜业股份有限公司西南铜业分公司
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中文摘要:
      研究了氧化焙烧碲化铜渣和氢氧化钠浸出焙烧产物中碲的工艺,主要考察焙烧时间、焙烧温度、氢氧化钠浓度、浸出温度、浸出时间、预处理方式对碲浸出率的影响。结果表明,焙烧温度不仅对焙烧产物的物相组成有影响,而且对氢氧化钠浸出焙烧产物中碲的浸出率也有明显影响,且随着焙烧温度的升高,碲浸出率降低。焙烧产物经球磨后浸出较直接浸出,碲浸出率可提高3.59个百分点。在下述最佳工艺条件下,碲浸出率为96.87%:焙烧温度400 ℃、焙烧时间3 h、氢氧化钠浓度4 mol/L、浸出温度75 ℃、浸出时间2 h、焙烧产物球磨30 min。
英文摘要:
      Process to leach tellurium from roasting products of oxidizing roasting copper telluride slag with sodium hydroxide was studied. Effects of roasting time, roasting temperature, concentration of sodium hydroxide, leaching temperature, leaching time and pretreatment method on tellurium leaching rate were investigated. The results show that roasting temperature not only affects phase composition of roasting product, but also has obvious effect on tellurium leaching rate from roasting product by sodium hydroxide. Tellurium leaching rate drops with increase of roasting temperature. Compared with direct leaching, tellurium leaching rate rises by 3.59 percent point after roasting product is ball milled. Tellurium leaching rate is 96.87% under the optimum conditions including roasting temperature of 400 ℃, roasting time of 3 h, sodium hydroxide concentration of 4 mol/L, leaching temperature of 75 ℃, leaching time of 2 h, and ball milling time of roasting product of 30 min.
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