Reduction Smelting Low Ferronickel from Pre-concentrated Nickel-Iron Ore of Nickel Laterite

• Main Authors: Zhu Deqing, Zhou Xianlin, Luo Yanhong, Pan Jian, Bai Bing
• Format: Article
• Language: English
• Published: De Gruyter 2016-11-01
• Series: High Temperature Materials and Processes
• Subjects: nickel laterite ore; pre-concentration; reducing smelting; low ferronickel
• Online Access: https://doi.org/10.1515/htmp-2015-0025

The research of smelting low ferronickel from pre-concentrate nickel-iron ore with 2.76 % Ni and 38.00 % Fetotal was carried out to find an effective way for stainless steel enterprises to use the low-nickel laterite reasonable. The results show that Ni and Fe both have a certain degree of enrichment, and impurities and harm elements have different degrees of reduction after pre-concentration of nickel-iron ore. Most valuable metal did not compound with impurities which greatly accelerated the speed and extent of melt separation reduction. Good alloy of 6.58 % Ni with the overall recoveries of 93.38 % and 89.95 % Fetotal with the overall recoveries of 89.57 % was manufactured under the following conditions: 10 % coke, 1.0 binary basicity, 18 % MgO and 3 % Al2O3 in slag, melting at 1,550 °C for 10 min. The product can be used for the feed of producing stainless steel.