Due to the non-transparency of metals it is nearly impossible to observe how solid inclusions behave within a liquid metal. At the same time numerical models, which generally are powerful tools for design of different types of metallurgical equipment, usually contain a high number of degrees of freedom due to the complexity of turbulent flows of liquid metal. Therefore, experimental verification of the numerical models is an essential task, which was hitherto not satisfactorily solved by established technologies. The paper presents a recent and break-through experimental method, which makes liquid metal transparent: dynamic neutron radiography. It allows to visualize dynamics of solid inclusions in metallurgical flows within a scaled-down equipment, keeping fixed non-dimensional hydrodynamic and electromagnetic parameters and applying a permanent magnets technology for electromagnetic agitation in the set-up.