Development of an open-gradient magnetic separator in the aerodynamic field

• Autorzy: Lu Dongfang , Liu Jianjun , Cheng Zhiyong , Li Xudong , Xue ZiXing , Li Si , Zheng Xiayu , Wang Yuhua

Identyfikatory

DOI

10.37190/ppmp20005

• Języki publikacji: EN

Abstrakty

EN

Open-gradient magnetic separator in the aerodynamic field named an Aerodynamic Open Gradient Magnetic Separator (AOGMS) was developed for recovering magnetite under the dry condition. In this paper, the principle of AOGMS is discussed, and a continuous lab-scale AOGMS was tested to separate magnetite particles from a material with the particle size of minus 3mm and inadequate liberation degree. The effect of key variables such as magnetic field intensity, the flow rate of air, and the rotation speed of the roller on the separation performance was investigated. The results suggest that the magnetic field intensity and the airflow rate both have the most significant influences on the performance. Under the condition of the magnetic intensity field 1250Gs on roller surface, an increase in the airflow rate can significantly improve concentrate grade with only a slight change of Fe recovery due to enhance the removal of the quartz and mica containing SiO₂ and Al₂O₃. AOGMS process could provide the appropriate competitiveness in the dry separation process, thus, the locked particles and fine non-magnetic particles can be discarded efficiently. This also shows that reasonable matching multiple force fields can effectively strengthen the separation efficiency of complex iron ore.

Słowa kluczowe

EN

magnetic separator; aerodynamic field; drag force

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2020
• Tom: Vol. 56, iss. 2
• Strony: 325--337
• Opis fizyczny: Bibliogr. 19 poz., rys., tab., wz.

Twórcy

autor

Lu Dongfang

• Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China

autor

Liu Jianjun

• School of Minerals Processing and Bioengineering, Central South University, Changsha 410083 China

autor

Cheng Zhiyong

• School of Minerals Processing and Bioengineering, Central South University, Changsha 410083 China

autor

Li Xudong

• School of Minerals Processing and Bioengineering, Central South University, Changsha 410083 China

autor

Xue ZiXing

• School of Minerals Processing and Bioengineering, Central South University, Changsha 410083 China

autor

Li Si

• School of Minerals Processing and Bioengineering, Central South University, Changsha 410083 China

autor

Zheng Xiayu

• School of Minerals Processing and Bioengineering, Central South University, Changsha 410083 China

autor

Wang Yuhua

• School of Minerals Processing and Bioengineering, Central South University, Changsha 410083 China

Bibliografia

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Uwagi

This research work was financially supported by the National Natural Science Funds of China (Grant No. 51974366, 51804341, 51674290), Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources（No. 2018TP1002）, Independent exploration and innovation of Central South University(No. 2019zzts703, 2019zzts701), Innovation Driven Plan of Central South University （No. 2015CX005) and Co-Innovation Center for Clean and Efficient Utilization of Strategic Metal Mineral Resources.