钒基多元合金制备中钒收得率及氮钒比的影响因素  

FACTORS AFFECTING VANADIUM YIELD AND N/V RATIO IN THE PREPARATION OF VANADIUM-BASED MULTIELEMENT ALLOYS

作　　者：李万达 王海旭 李兰杰 万贺利 卢明亮 李九江 Li Wanda;Wang Haixu;Li Lanjie;Wan Heli;Lu Mingliang;Li Jiujiang(HBIS Group Chengde Vanadium and Titanium New Material Co.,Ltd.,Chengde 067002,Hebei;HBIS Material Technology Research Institute,Shijiazhuang 050023,Hebei)

机构地区：[1]河钢承德钒钛新材料有限公司,河北承德067002 [2]河钢材料技术研究院,河北石家庄050023

出　　处：《河北冶金》2023年第1期53-58,81,共7页Hebei Metallurgy

基　　金：钒钛产业技术创新研究院建设(202008F027)。

摘　　要：为进一步提升钒基多元合金在炼钢过程中的细晶强化作用,研究了干法造粒对原料粒度的影响,以及不同粒度的V_(2)O_(3)及高温反应对钒基多元合金制备过程中N/V及钒收得率的影响。结果表明:采用大颗粒偏钒酸铵有助于获得大颗粒、高密度的V_(2)O_(3),同时采用干法造粒后,V_(2)O_(3)颗粒的直径高于30.76μm占比在50%以上,使用其制备钒基多元合金钒收得率可提高5%。采用大粒度的V_(2)O_(3)为原料,在配碳系数0.29,碳化温度1450℃,氮化温度1400℃,氮气流量300 m^(3)/h时,得到的钒基多元合金N/V比达到最高值0.225,同时发现在混合料中加入铁元素有助于改善合金质量,有利于炼钢生产。To further improve the fine-grain strengthening effect of vanadium-based multielement alloy in the process of steelmaking,the effects of dry granulation on the particle size of raw materials,and the effects of different particle sizes of V_(2)O_(3)and high temperature reaction on the N/V and vanadium recovery rate in the preparation of vanadium-based multielement alloy were studied.The results show that using large particles of ammonium meta-vanadate is helpful to obtain large particles and high density of V_(2)O_(3).At the same time,using dry granulation method,the diameter of V_(2)O_(3) particles is more than 30.76μm,accounting for more than 50%,and the vanadium recovery rate of vanadium-based multi-element alloy prepared by using it can be increased by 5%.Using large size V_(2)O_(3) as raw material,the N/V ratio of vanadium-based multielement alloy reaches the maximum value of 0.225 when the carbon coefficient is 0.29,the carbonization temperature is 1450℃,the nitridation temperature is 1400℃,and the nitrogen flow rate is 300 m^(3)/h.Meanwhile,it is found that adding iron to the mixture is helpful to improve the alloy quality,which is conducive to steelmaking production.

关 键 词：钒基合金 氮钒比 干法造粒 收得率 

分 类 号：TG142.3[一般工业技术—材料科学与工程]