摘要
随着硫化镍矿资源的日益枯竭,红土镍矿的开发利用热潮已经来临。研究了硫酸化焙烧-水浸工艺处理红土镍矿过程中各相关因素的影响,研究表明:某红土镍矿在实验条件为:焙烧温度250℃,焙烧时间2.5 h,水浸温度60℃,水浸时间1 h,水浸固液比1∶8时,酸料比(m.lg-1)0.5∶1,镍的浸出率可以到达76.27%,钴的浸出率达到55.88%。实验效果良好。二次重复浸出实际上抑制了矿物中镍、铁的浸出,而促进了钴的浸出。最后,文章分析了硅酸盐与酸反应的相关特性。
With the depletion of sulfide nickel mineral resources,the boom of exploration and utilization of laterite-nickel mine arrived.Correlation factors in sulfating roasting-water immersion craft of processing laterite-nickel ore were studied.The results showed that under the condition of roasting temperature 250 ℃,leaching time 2.5 h,water-immersion temperature 60℃,water-immersion time 1 h,liquid-solid ratio 8∶1,the acid material ratio 0.5∶1,the nickel leaching rate reached to 76.27%,and the cobalt leaching rat...
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2010年第3期406-412,共7页
Chinese Journal of Rare Metals
关键词
红土镍矿
硫酸化焙烧
水浸
硅酸盐
laterite-nickel ore
sulfating roasting
water-immersion
silicate
