Model of particle accumulation on matrices in transverse field pulsating high gradient magnetic separator
Model of particle accumulation on matrices in transverse field pulsating high gradient magnetic separator
复制标题
横向场脉动高梯度磁选机基质颗粒堆积模型
DOI：
10.1016/j.mineng.2019.106105
复制
发表时间：
2020-01
影响因子：
5.2
通讯作者：
Xiayu Zheng
中科院分区：
文献类型：
--
作者：
Zhicheng Hu;Jun Zhang;Jianguo Luo;Yuhe Tang;Xiayu Zheng
颗粒在单丝上的静态堆积模型（SBM-sw）描述了磁场强度、流体速度和丝径等参数对颗粒堆积的影响，对高梯度磁分离装置的设计具有重要的指导作用。然而，在真实的高梯度磁分离器中，由于基体间隙的收缩，流体力学的变化会干扰颗粒的聚集。当基质内的浆料暴露于脉动时，这种扰动被加强。因此，与SBM-sw模型相比，双丝上的磁性粒子聚集模型（SBM-dw）更适合于揭示磁性粒子在基体上的聚集过程。基于力平衡原理，提出了横向场脉动高梯度磁分离器（TPHGMS）的SBM-sw和SBM-dw。通过计算特定参数下的颗粒堆积分布，研究和讨论了脉动浆料、丝间距和外加磁感应强度对TPHGMS颗粒堆积的影响。脉冲浆料直接冲击顺磁颗粒捕获区域，并导致在高频下颗粒堆积急剧减少。增大丝间距或降低脉动频率可以减弱浆体的冲击作用，减缓颗粒堆积量的下降。此外，在一定范围内增加外加磁感应强度也会显著增加颗粒堆积。最后将SBM-dw模型与一系列实验进行了比较。结果表明，实验颗粒堆积重量与SBM-dw的计算颗粒堆积重量一致，这为理解和预测TPHGMS的性能提供了更好的真实性。
The static buildup model of particle on single wires (SBM-sw), illustrating the effect of these influencing parameters such as applied magnetic induction, fluid velocity and wires size on particle accumulation, plays a dominant role in instructing the design of a high gradient magnetic separation (HGMS) device. However, in a real separation chamber of HGMS filled with piles of matrices, the changes of hydrodynamic due to gap shrinkage of matrices disturb particle accumulation. When slurry within the matrix is exposed to pulsation, this disturbance is intensified. Consequently, compared to SBM-sw, the model of magnetic particle accumulation on double wires (SBM-dw) is supposed more suitable to reveal the processing of magnetic particle accumulation on matrices. In this article, SBM-sw and SBM-dw of a transverse field pulsating HGMS separator (TPHGMS) was presented based on force equilibrium. The effect of pulsating slurry, wire spacing and applied magnetic induction on particle accumulation of the TPHGMS was investigated and discussed with calculating the buildup profiles under specific parameters. Pulsating slurry directly impinges the regions of paramagnetic particle capture and leads to sharp decrease of particle buildup under high frequency. Enlarging wire spacing or decreasing pulsating frequency can weaken the impact of slurry and slow down the decrease of particle buildup. In addition, increasing applied magnetic induction within a certain range can also significantly increase particle buildup. Finally the SBM-dw model was compared with a series of experiments. Results indicated that experimental particle buildup weights agreed with the calculated particle buildup weights of SBM-dw which provides better authenticity to understand and predict the performance of the TPHGMS.
登录
查看更多内容
影响因子：
2.7
作者：
V. Bădescu;V. Murariu;O. Rotariu;N. Rezlescu
通讯作者：
V. Bădescu;V. Murariu;O. Rotariu;N. Rezlescu
影响因子：
1
作者：
Abdallah Belounis;R. Mehasni;M. Ouili;M. Feliachi;M. Latreche
通讯作者：
Abdallah Belounis;R. Mehasni;M. Ouili;M. Feliachi;M. Latreche
高梯度磁分离中外加磁感应强度确定基质磁化状态的研究
影响因子：
4.8
作者：
Yuhua Wang;Danxiao Gao;Xiayu Zheng;Dongfang Lu
通讯作者：
Dongfang Lu
影响因子：
4.8
作者：
Xiayu Zheng;Yu-hua Wang;Dongfang Lu
通讯作者：
Xiayu Zheng;Yu-hua Wang;Dongfang Lu
影响因子：
2.1
作者：
F. Friedlaender;M. Takayasu;J. Rettig;C. Kentzer
通讯作者：
F. Friedlaender;M. Takayasu;J. Rettig;C. Kentzer