摘要
研究了用还原焙烧-氨浸工艺（RRA L ）从菲律宾某褐铁矿型红土镍矿中提取镍、钴和铁，确定了最佳工艺条件。结果表明：在焙砂细度为-74μm占96．34％、N H3和CO2质量浓度比为90 g/L∶60 g/L、矿浆质量浓度为100 g/L、浸出时间为150 min、充气量为1．2～1．5 mL/（min ＆#183; g焙砂）条件下，镍、钴浸出率分别为88．02％和50．16％，浸出渣中全铁质量分数为59．75％。
The reduction roasting-ammonia leaching （RRAL ） process is used to extract nickel and cobalt ,and recover Fe from Philippines limonitic laterite ore .The optimum conditions are confirmed . T he results show that under the conditions of calcine fineness of -74 μm acountiong for 96 .34% , N H3 and CO2 mass concentration ratio of 90 g/L∶60 g/L ,slurry concentration of 100 g/L ,ammonia leaching time of 150 minutes ,aeration volume between 1 .2 -1 .5 mL/（min ＆#183; g calcine） ,the leaching rate of nickel and cobalt reach 88 .02% and 50 .16% ,respectively ,and Fe mass fraction in leaching residue is 59 .75% .
出处
《湿法冶金》
CAS
北大核心
2014年第2期108-111,共4页
Hydrometallurgy of China
关键词
红土镍矿
焙砂
氨浸
镍
钴
limonitic laterite ore
calcine
ammonia leaching
nickel
cobalt
