以片钒、石墨为原料制备氮化钒的试验

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Experiment on Preparation of Vanadium Nitride from Vanadium Pentoxide Flake and Graphite

1. School of Metallurgical and Ecological Engineering, Beijing University of Science and Technology, Beijing 100083, China;
2. Special Materials, CNMC Ningxia Orient Group Co., Ltd., Shizuishan 753000, Ningxia, China

摘要: 采用高温非真空法，以球磨片钒、石墨为原料制备氮化钒。结果表明：片钒的球磨时间对反应产物氮化钒中碳、氮的含量均有影响；片钒具有易磨的特征，经试验找出球磨片钒的最佳粒度配比为0.48（球磨15 s）∶0.52（球磨2 min）；在球磨片钒经过还原氮化进入烧结阶段（1 490℃）以后，烧结时间对反应进程及产品成分已影响不大，烧结时间可控制在2～4 h。
- 氮化钒 /
- 片钒 /
- 石墨 /
- 粒度分析 /
- 烧结
Abstract: Vanadium pentoxide flake and graphite were used as raw materials to prepare vanadium nitride(VN) with high temperature non-vacuum method in the laboratory.The result shows that ball milling time of vanadium pentoxide flake has influence on the content of nitrogen and carbon in VN.Vanadium pentoxide flake is characterized by its grindability,and the optimal granularity proportioning is 0.48(the flake milled for 15 s):0.52(the flake milled for 2 min).After the milled vanadium pentoxide flake is subject to the agglomeration process(1 490℃) following reduction and nitridation,agglomeration time exerts little effect on the reaction process and chemical composition of product.The agglomeration time can be controlled within 2 to 4 hours.
- vanadium nitride /
- vanadium pentoxide flake /
- graphite /
- granularity analysis /
- agglomeration