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金属矿山 ›› 2019, Vol. 48 ›› Issue (08): 83-87.

• 矿物工程 • 上一篇    下一篇

某含铬钛铁矿强磁粗精矿闪速焙烧试验研究

李家林1,余永富1,2,陈雯1,刘小银1,陆晓苏1,张立刚1,彭泽友1   

  1. 1. 长沙矿冶研究院有限责任公司,湖南 长沙 410012;2. 武汉理工大学资源与环境工程学院,湖北 武汉 430070
  • 出版日期:2019-08-15 发布日期:2019-10-10
  • 基金资助:

    基金项目:“十二五”国家科技支撑计划项目(编号:2015BAB03B01)。

Flash-Magnetic Roasting Experiments Study on High Intensity Magnetic Concentrate which Contained Chromite

Li Jialin1,Yu Yongfu1,2,Chen Wen1,Liu Xiaoyin1,Lu Xiaosu1,Zhang Ligang1,Peng Zeyou1   

  1. 1. Changsha Research Institute of Mining and Metallurgy Co., Ltd,Changsha 410012, China;2. School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
  • Online:2019-08-15 Published:2019-10-10

摘要: 为降低国外某钛铁矿强磁粗精矿中的铬含量,使其能用于生产氯化钛白,对其进行了闪速焙烧试验研究。冷态模拟试验确定了闪速焙烧的最佳操作气速为0.61~0.69 m/s,热态试验确定了矿样闪速焙烧的最佳焙烧温度、焙烧时间分别为800 ℃和100 s ,气体流速为0.69 m/s,焙烧产品在干式磁选磁场强度318 kA/m、滚筒转速25 r/min条件下,最终可获得精矿TiO2品位47.18%、杂质Cr2O3含量0.25%、TiO2回收率87.23%的选别指标,精矿质量符合三级钛铁矿精矿质量要求,研究结果可为含铬钛铁矿资源的合理开发利用提供技术支持。

关键词: 钛铁矿, 铬铁矿, 闪速焙烧, 干式磁选

Abstract: In order to reduce the chromium-content of a certain ilmenite high intensity magnetic concentrate, ensure that it can be economically and reasonably used in titanium dioxide chloride process, the flash-magnetic roasting experiments were carried out. The cold-state simulation studies determined the optimal operation gas velocity was 0.61~0.69 m/s, the high-temperature state studies determined the optimal roasting temperature and roasting time was 800 ℃ and 100 s, respectively the gas velocity was 0.69 m/s. Magnetic concentrate index that TiO2 grade 47.18%, impurity of Cr2O3 content is 0.25% and TiO2 recovery 87.23% were obtained through the dry high intensity magnetic separation, the concentrate quality meets the grade three of ilmenite concentration quality standard. The research can provide a technical reference for the beneficiation of high chromium ilmenite ore.

Key words: Ilmenite, Chromite, Flash-magnetic roasting, Dry magnetic separation