2017-Sustainable Industrial Processing Summit
SIPS 2017 Volume 5. Marquis Intl. Symp. / New and Advanced Materials and Technologies
| Editors: | Kongoli F, Marquis F, Chikhradze N |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2017 |
| Pages: | 590 pages |
| ISBN: | 978-1-987820-69-0 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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A Two-Stage Fluidized Bed Hydrogen Reduction Process for the Production of High-Purity Ni Particles
Young Ok Park1; Jae-Rang Lee1; Naim Hasolli1; Seong-Min Jeon1; Kang-San Lee1; Kwang-Deuk Kim1;1KOREA INSTITUTE OF ENERGY RESEARCH, Deajeon, Korea (Republic of [South] Korea);
Type of Paper: Regular
Id Paper: 113
Topic: 43
Abstract:
A novel two-stage reduction process for the production of nickel powder with high purity and low density in a fluidized bed reactor has been developed in this work. The raw NiO particles are first pre-reduced using hydrogen at lower temperatures (350-450°C) followed by further reduction at a higher temperature (500-600°C). The low-grade NiO powder has a bulk density of 4.1g/cm3 and a particle size below 10micrometer. The samples of the NiO powder investigated to estimate the gas consumption rate for given amount of the ore to be reduced and to observe the influence of the main reduction parameters on reduction rate and Ni contents. At a consumption rate of 2000Nm3/ton-ore, almost all samples reach the level of reduction above 95% and have a high Ni content (above 96%) for operation temperature of 550oC. For the temperature range between 450 and 650oC and the hydrogen consumption rate of 3500Nm3/ton-ore, the reduction rate reaches to the level of above 98% and have a high Ni content (above 98.5%).
Keywords:
Environment; Hydrogen production; New and advanced technology;References:
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