“…Gas-liquid, liquid-liquid, solidliquid in a porous medium or channel under supergravity condition can significantly improve the stress difference between two phases to strengthen the relative speed, reduce the role of liquid surface tension, and generate a great shearing force for stretching or tearing the liquid into micron or nanoscale liquid membrane and liquid droplets. [31][32][33] Compared with the conventional gravity field, the interphase area is greatly increased, the diffusivity of substances is obviously improved, the phase interface is fast updated, and the micromixing of different phases is accelerated, to greatly enhance the mass transfer of substance. Thus the supergravity technology has been studied in the following metallurgy fields: (a) removal of impurity elements (such as Fe, Si, and Cu) from molten metals, 27,34) (b) enrichment of valuable elements (such as Ti, V, RE, and P) from metallurgical slags, 25,28,30,31,[35][36][37][38][39][40][41] (c) separation of non-metallic inclusions (such as Al 2 O 3 particle) from molten metal, [42][43][44] and (d) refinement of the solidification structure of metal alloy (such as Al-Cu alloy).…”