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江西某砂质高岭土超导磁分离除铁增白试验研究

Study on Iron Removal and Whitening of Sandy Kaolin from Jiangxi by Superconducting Magnetic Separation

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【作者】 谭琦马瑛赵恒勤刘玉林赵毅张亮

【Author】 TAN Qi;MA Ying;ZHAO Hengqin;LIU Yulin;ZHAO Yi;ZHANG Liang;Zhengzhou Institute of Multipurpose Utilization of Mineral Resources CAGS;National Engineering Research Center for Multipurpose Utilization of Industrial Minerals;Jiangsu Jack-zhongke Superconducing Technologies Co. Ltd;

【机构】 中国地质科学院郑州矿产综合利用研究所国家非金属矿资源综合利用工程技术研究中心江苏旌凯中科超导高技术有限公司

【摘要】 为研究精制高岭土的绿色环保制备技术,以江西某砂质高岭土为研究对象,进行了工艺矿物学和超导磁分离除铁增白试验研究。主要研究了不同磁选方式、超导磁选中磁场强度、分散剂用量、进料速度、分选介质尺寸、电磁预处理等对高岭土磁选的影响。最终确定采用"电磁预选—超导磁选"工艺,电磁磁场强度为1.1 T,超导磁场强度为4 T,且在分散剂用量为0.4%、进料速度为0.8 cm/s、使用2#钢毛的超导磁选条件下,获得Fe2O3含量为0.48%、白度为93.4%、产率为60.08%的精制高岭土,极大地提高了该砂质高岭土的产品附加值。

【Abstract】 In order to study the green preparation technology of refined kaolin, taking sandy kaolin from Jiangxi as a research object, process mineralogy, iron removal and whitening by superconducting magnetic separation were studied. Different magnetic separation, magnetic intensity, dispersant dosage, feed rate, media size and pretreatment were mainly studied. Finally, "pre-electromagnetic separation-superconducing magnetic separation" was adopted. The refined kaolin with Fe2O3 content of 0.48%, whiteness of 93.4%, and yield of 60.08% was obtained, while the intensity of electromagnetic separation and superconcucing magnetic separation were 1.1 T and 4 T, respectively, and under the superconducing magnetic separation condition of dispersant dosage of 0.4%, feed rate of 0.8 cm/s, and 2# steel wool. This method has greatly improved the additional value of sandy kaolin.

【基金】 国家自然科学基金(51404219);中国地质调查局地质调查项目(121201017000172206);河南省重点研发与推广专项(软科学研究)(182400410432)
  • 【文献出处】 矿产保护与利用 ,Conservation and Utilization of Mineral Resources , 编辑部邮箱 ,2019年02期
  • 【分类号】TD97;TD924
  • 【网络出版时间】2018-11-07 14:04
  • 【被引频次】3
  • 【下载频次】181
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