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  • ISSN 1005-2518 
  • Founded in 1988
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Mining Technology and Mine Management

Study of Effect of Pulsed Microwave Assisted Grinding Process Parameters on the Ilmenite Heating Performance

  • Ming HOU ,
  • Jun LI ,
  • Li YANG ,
  • Peiqiang FAN ,
  • Shenghui GUO ,
  • Yan YAN
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  • 1.Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,Yunnan,China
    2.State International Joint Research Center of Advanced Technology for Superhard Materials,Kunming University of Science and Technology,Kunming 650093,Yunnan,China
    3.National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology,Kunming University of Science and Technology,Kunming 650093,Yunnan,China
    4.State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming 650093,Yunnan,China
    5.Yunnan Phosphate Group Co. ,Ltd. ,Kunming 650600,Yunnan,China

Received date: 2019-10-22

  Revised date: 2020-03-26

  Online published: 2020-08-27

Abstract

Because of its light weight,high strength,and good corrosion resistance,the development and application of titanium have attracted widespread attention from Chinese and foreign scholars.The higher the content,the lower the grade of titanium concentrate that can be recovered,and it is difficult to improve the recovery rate.In order to improve the recovery efficiency of ilmenite,the heating behavior of ilmenite under pulsed microwave conditions was studied.In this study,pulsed microwave pretreatment of ilmenite was carried out using a self-made pulsed microwave device.The effects of different irradiation time,pulse microwave power,weight of ore sample and particle size of different ore samples on the heating performance of ilmenite were studied.The composition of the ore sample was analyzed by X-ray diffractometer,and the particle size of the sample was detected by a nano-laser particle size analyzer.The research results show that the heating behavior of materials in the microwave field is determined not only by the nature of the mineral itself,but also by the power of the microwave heating equipment.The temperature increase rate of ilmenite is significantly affected by the quality of the sample.At the same time,the change law shows consistency under different heating time conditions:When the mass of ilmenite is 40~60 g,the temperature increase rate reaches the maximum.The changes in the quality of ilmenite can significantly affect the heating temperature of the ore sample.Under the condition of a certain microwave power,the longer the microwave acts on the material,the higher the temperature of the ore sample.With the change of the particle size of the material,the microwave temperature showes a trend of increasing first and then decreasing.When the ore sample has a particle size of 25 mm,a weight of 40 g,an irradiation time of 30 s,and an average microwave power of 3 kW,the sample is heated to the best effect.The research in this paper is of great significance for the application of pulsed microwave in the field of grinding aid.

Cite this article

Ming HOU , Jun LI , Li YANG , Peiqiang FAN , Shenghui GUO , Yan YAN . Study of Effect of Pulsed Microwave Assisted Grinding Process Parameters on the Ilmenite Heating Performance[J]. Gold Science and Technology, 2020 , 28(4) : 595 -602 . DOI: 10.11872/j.issn.1005-2518.2020.04.170

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