摘要
对铜渣展开了氧化气氛氯化焙烧—配煤还原—高温熔分回收铁的试验。结果表明,最佳氧化焙烧试验条件为:云铜渣破碎至-100μm、NaCl配加量4%、氧化焙烧温度900℃、焙烧时间2h;此时脱硫率达到72%;焙渣经1 100℃配煤还原6h后,在1 500℃氮气保护下熔分0.5h,铁还原率可以达到94%,铁中铜含量降低至0.51%,铜分离率为70.6%。
Recycling of metal iron from copper slag by chloridizing roasting in oxidation atmosphere, reduction with blended coal and melting separation of slag and iron at high temperature were carried out. The results show that desulfurization degree is 72% under the conditions including particle size of slag of -100 μm, mass dosage of NaCl of 4%, and oxidizing roast at 900 ℃ for two hours. After reduction with blended coal at 1 100℃ for six hours and then melting separated at 1 500 ℃ for 0.5 hour in N2, the reduction degree of metal iron is 94%. Copper content in metal iron is 0.51% with copper separation degree of 70. 6 % .
作者
赵洁婷
ZHAO Jie-ting(School of Engineering, Changchun Normal University, Changchun 130032, China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2018年第7期9-12,39,共5页
Nonferrous Metals（Extractive Metallurgy)
基金
吉林省教育厅"十二五"科学技术研究规划项目(吉教科合字[2015]第360号)
吉林省产业创新专项资金项目(2018C023)
长春师范大学自然科学基金项目(长师大自科合字[2014]第009号)
关键词
铜渣
氯化焙烧
热重
NACL
copper slag
chloridizing roasting
TG
NaCl
