有色金属科学与工程2018，Vol.9Issue(1)：34-38,70,6.DOI:10.13264/j.cnki.ysjskx.2018.01.006
镁质氧化镍矿非熔融金属化还原—磁选镍铁工业试验研究
Pilot-scale plant study on non-molten metalized reduction-magnetic separation for magnesium-rich nickel oxide ores to produce ferronickel concentrate
摘要
Abstract
In this study, semi-pilot and pilot scale tests were carried out to treat magnesium-rich low-nickel oxide ore, based on experimental results of non-molten state metalized reduction of nickel oxide ores followed by magnetic separation to produce ferronickel concentrate, which was developed by our research team in the previous study.The semi-pilot tests were conducted in a rotary kiln of 0.45 m inner diameter and 7.5 m length, and the pilot ones were conducted in another rotary kiln of 3.2 m inner diameter and 72 m length. The process mainly consists of four steps: feed preparation,solid-state metalized reduction, quenching and ballmilling, and magnetic separation. During 50 days of continuous semi-pilot tests, approximate 20 tons nickel oxide ores were consumed. the overall recoveries of nickel and iron reached 91.3 % and 73.8 %, while the nickel and iron grades of the ferronickel concentrate were 7.4 % and 69.6 %. And meanwhile, the nickel loss to residue was only 0.16 %. In the 15 days of continuous pilot tests, approximate 8000 tons ores were consumed, whose results were similar to those of the above semi-pilot tests. The results further verified the stability and feasibility of industrial application.Preliminary calculation suggested that the electricity consumption was only approximate 300 kW·h when one ton ferronickel concentrate was produced, i.e. 52.5 kW·h/t-ore. In all, magnesium-rich nickel oxide ore can be fully metalized reduced at a non-molten temperature using the proposed technology in order to beneficiate nickel and iron.关键词
镁质氧化镍矿/非熔融金属化/磁选/镍铁精矿/工业试验Key words
magnesium-rich nickel oxide ore/non-molten metalized reduction/magnetic separation/ferronickel concentrate/pilot scale tests.分类
矿业与冶金引用本文复制引用
马保中,王成彦,陈永强,邢鹏..镁质氧化镍矿非熔融金属化还原—磁选镍铁工业试验研究[J].有色金属科学与工程,2018,9(1):34-38,70,6.基金项目
国家自然科学基金面上资助项目(51674026) （51674026）
国家自然科学基金云南省联合基金资助项目(U1302274) （U1302274）
中央高校基本科研业务费资助项目(230201606500078) （230201606500078）
