耐火材料 ›› 2022, Vol. 56 ›› Issue (2): 131-136.DOI: 10.3969/j.issn.1001-1935.2022.02.008

• 研究开发 • 上一篇    下一篇

钛铁渣制备含TiCN复合材料及其反应动力学

郭梦真1)(), 梁永和1)(), 聂建华1), 蔡曼菲1), 冯立1,2), 鞠茂奇1), 刘艳丽2), 姜广森1), 刘梦玄1)   

  1. 1)武汉科技大学 省部共建耐火材料与冶金国家重点实验室 湖北武汉 430081
    2)锦州国泰实业有限公司 辽宁锦州 121000
  • 收稿日期:2021-04-28 出版日期:2022-04-15 发布日期:2022-04-21
  • 通讯作者: 梁永和,男,1959年生,博士,教授。E-mail: wkdlyh@126.com
  • 作者简介:郭梦真:女,1995年生,硕士研究生。E-mail: 563939434@qq.com
  • 基金资助:
    国家自然科学基金面上资助项目(51772222);湖北省重点研发计划项目(2020BAA028)

Preparation of composite material containing TiCN from ferrotitanium slag and reaction kinetics

Guo Mengzhen1)(), Liang Yonghe1)(), Nie Jianhua1), Cai Manfei1), Feng Li1,2), Ju Maoqi1), Liu Yanli2), Jiang Guangsen1), Liu Meng-xuan1)   

  1. 1)The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China
  • Received:2021-04-28 Online:2022-04-15 Published:2022-04-21
  • Contact: Liang Yonghe

摘要:

为了实现钛铁渣的有效利用,以钛铁渣、焦炭和SiO2为原料通过碳热还原氮化法制备了含TiCN的复合材料,研究了工艺条件对反应产物的影响。TiCN的最佳合成条件为在流动氮气下经1 400 ℃保温4 h,且焦炭加入量的增加可促进TiCN的生成。采用Kissinger法、Ozawa法和Coats-Redfern法研究了以钛铁渣为原料制备TiCN的反应非等温动力学。反应的最概然机制函数为G(α)=[-ln(1-α)]3,反应机制为随机成核和随后生长,反应级数n=3。反应的活化能E=115.34 kJ·mol-1,指前因子A=6.76×1047 min-1

关键词: TiCN, 钛铁渣, 碳热还原氮化法, 反应动力学

Abstract:

To realize the effective utilization of ferrotitanium slag,TiCN containing composite material was synthesized by carbothermal reduction nitridation with ferrotitanium slag,coke,and SiO2 as raw materials,and the effects of technological conditions on the reaction products were studied.The optimal synthesis condition of TiCN is 1 400 ℃ insulation for 4 h with flowing nitrogen,and the increase of the coke addition can promote the generation of TiCN.The non-isothermal kinetics of the reaction of TiCN prepared from ferrotitanium slag were studied by the methods of Kissinger,Ozawa,and Coats-Redfern.The most probable mechanism function of the reaction is G(α)=[-ln(1-α)]3,the reaction mechanism is random nucleation and subsequent growth,the reaction grade n is 3,the reaction activation energy E is 115.34 kJ·mol-1,and the pre-exponential factor A is 6.76×1047 min-1.

Key words: titanium carbonitride, ferrotitanium slag, carbothermal reduction nitridation, reaction kinetics

中图分类号: