Magnetic fields were used to successfully improve the fluidization quality of magnetizable particles, forming the magnetized fluidized bed (MFB). Moreover, researchers found that the binary admixture of magnetizable and nonmagnetizable particles could also be used in the MFB, creating the admixture MFB. Consequently, the MFB technique is no longer restricted to the few magnetizable particles in nature and can be extended to numerous nonmagnetizable particles. Nevertheless, research on the admixture of MFB is far from sufficient, severely hindering its commercial application in the chemical and biochemical industries. To deepen our understanding in this area, this review summarizes the relevant findings, which mainly include (1) transport phenomena in the gas-solid admixture MFB with Geldart B particles; (2) elimination of the abnormal fluidization phenomena in the gas-solid admixture MFB with Geldart C particles; (3) flow regime transition of the liquid-solid admixture MFB under both the magnetization-FIRST and magnetization-LAST operation modes; and (4) application of the pure MFB in the fields of gas filtration and coal dry separation. Finally, critical comments are made on the shortcomings of the reported research with the hope that more efforts could be devoted to these aspects in the future.

中文翻译：

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具有可磁化和不可磁化颗粒的二元混合物的磁化流化床

磁场用于成功改善可磁化颗粒的流化质量，形成磁化流化床（MFB）。此外，研究人员发现，可磁化和不可磁化颗粒的二元混合物也可以在MFB中使用，从而形成混合物MFB。因此，MFB技术不再局限于自然界中的少数可磁化颗粒，而可以扩展到许多不可磁化的颗粒。然而，对MFB混合物的研究还远远不够，严重阻碍了其在化学和生化工业中的商业应用。为了加深我们对这一领域的理解，本综述总结了相关的发现，主要包括：（1）带有Geldart B颗粒的气固混合物MFB中的传输现象；（2）消除具有Geldart C颗粒的气固混合物MFB中的异常流化现象；（3）在磁化-FIRST和磁化-LAST两种工作模式下，液固混合物MFB的流态转变；（4）纯MFB在气体过滤和煤干法分离领域的应用。最后，对已报道的研究的缺点提出了批评意见，希望将来可以在这些方面做出更多的努力。