摘要
某硫钴精矿中钴主要以类质同象赋存于黄铁矿、磁铁矿中,为了使该硫钴精矿中的钴得到回收,开展了硫钴精矿焙烧-浸出提钴试验研究。结果表明,硫钴精矿在矿石细度为-0.074mm粒级占80%、焙烧助剂亚硫酸钠用量为硫钴精矿质量的5.0%、焙烧温度620℃、焙烧时间3h、硫酸用量为硫钴精矿质量的20%、浸出温度90℃、液固比2∶1、浸出时间2h条件下,钴浸出率为85.85%。硫钴精矿氧化焙烧后转变为赤铁矿,焙烧矿中钴主要以氧化钴和硫酸钴形式存在。
For recovering the cobalt in a sulfur-cobalt concentrate mainly occurring as isomorphism in pyrite and magnetite,an experimental study was carried out by adopting roasting and leaching process.The results show that the sulfur-cobalt concentrate,at the fineness of-0.074 mm 80%,was firstly roasted at 620℃for 3 h by adding sodium sulfite as an aid at an amount of 5%of the mass weight of sulfur-cobalt concentrate,and then leached for 2 h at 90℃with sulfuric acid at an amount of 20%of the mass weight of sulfur-cobalt concentrate,liquid-solid ratio of 2∶1,leading to a cobalt leaching rate of 85.85%.It is found that sulfur-cobalt concentrate is transformed into hematite after oxidizing roasting,and cobalt in the roasted ore mainly exists in the form of cobalt oxide and cobalt sulfate.
作者
黄鹏
白明
刘爽
康健
董立帅
李展强
HUANG Peng;BAI Ming;LIU Shuang;KANG Jian;DONG Lishuai;LI Zhanqiang(Hubei Geological Research Laboratory,Wuhan 430034,Hubei,China;Key Laboratory of Rare Mineral Resources,Ministry of Natural Resources,Wuhan 430034,Hubei,China;Ninth Team of Hebei Bureau of Geology and Mineral Resources,Xingtai 054000,Hebei,China;Guangdong Institute of Mineral Resource Applications,Shaoguan 512026,Guangdong,China)
出处
《矿冶工程》
北大核心
2025年第1期109-112,共4页
Mining and Metallurgical Engineering
基金
国家重点研发计划(2021YFC2903005)
河北省重点研发计划(21374102D)。
关键词
焙烧
浸出
硫钴精矿
钴
焙烧助剂
氧化钴
硫酸钴
roasting
leaching
sulfur-cobalt concentrate
cobalt
roasting additive
cobalt oxide
cobalt sulfate
