Control method for titanium-containing ultra-low carbon steel inclusions

The invention discloses a control method for titanium-containing ultra-low carbon steel inclusions. The technological process of molten steel smelting comprises the converter process, the LF process, the RH process and the slab continuous casting process, low-reactivity slag charge is added after aluminum adding deoxidation alloying in the RH process is finished, along with circulation of vacuum molten steel, the slag charge floats upwards and stays on a steel-slag interface to prevent steel ladle slag from transferring oxygen to the molten steel, and meanwhile the slag charge has the capacity of adsorbing inclusions in steel; and RH procedure treatment process parameters are controlled, so that the steel ladle slag is effectively prevented from transferring oxygen to the molten steel, titanium and aluminum elements in the deoxidized steel are prevented from being secondarily oxidized, and the content of inclusions in the steel is controlled. The control method effectively prevents the ladle slag from transfe