某含铬钛铁矿强磁粗精矿闪速焙烧试验研究

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英文篇名：Flash-Magnetic Roasting Experiments Study on High Intensity Magnetic Concentrate which Contained Chromite 作者：李家林 ; 余永富 ; 陈雯 ; 刘小银 ; 陆晓苏 ; 张立刚 ; 彭泽友 英文作者：Li Jialin;Yu Yongfu;Chen Wen;Liu Xiaoyin;Lu Xiaosu;Zhang Ligang;Peng Zeyou;Changsha Research Institute of Mining and Metallurgy Co.,Ltd;School of Resources and Environmental Engineering,Wuhan University of Technology; 关键词：钛铁矿 ; 铬铁矿 ; 闪速焙烧 ; 干式磁选 英文关键词：Ilmenite;;Chromite;;Flash-magnetic roasting;;Dry magnetic separation 中文刊名：金属矿山 英文刊名：Metal Mine 机构：长沙矿冶研究院有限责任公司;武汉理工大学资源与环境工程学院; 出版日期：2019-08-15 出版单位：金属矿山 年：2019 期：08 基金：“十二五”国家科技支撑计划项目（编号：2015BAB03B01） 语种：中文; 页：89-93 页数：5 CN：34-1055/TD ISSN：1001-1250 分类号：TD951

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25r/min条件下,最终可获得精矿TiO_2品位47.18%、杂质Cr_2O_3含量0.25%、TiO_2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。
        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 hightemperature 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 TiO_2 grade 47.18%,impurity of Cr_2O_3 content is 0.25% and TiO_2 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.

引文

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