Abstract：The process of preparing ultrafine iron powder by low temperature hydrogen reduction of ultrafine iron oxide was studied. The iron oxide powders with different particle size were obtained by high-energy ball milling， and the powders were reduced in hydrogen atmosphere at low temperature. The oxygen content was determined by nitrogen oxygen analyzer， and the reduction rate of iron oxide powder was calculated. The influence of various factors on the reduction rate was analyzed， and the optimal reduction process parameters were obtained by comparative analysis. Results show that the best reduction process parameters are： the reduction temperature is 700 ℃， the reduction time is 60 min， the average particle size of iron oxide powder is 0.8 μm， and the hydrogen flow rate is 1.0 L/min.
林常平，李成威，张 武. 超细氧化铁低温还原工艺研究[J]. , 2018, 28(01): 15-19.
LIN Chang-ping，LI Cheng-wei，ZHANG Wu. Study on low temperature reduction process of superfine iron oxide. , 2018, 28(01): 15-19.
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2018, Vol. 28 
