Preparation method of titanium alloy cast ingot with highly homogenized alloy components

The invention belongs to the field of non-ferrous metal processing, and discloses a preparation method of a titanium alloy cast ingot with highly homogenized alloy components, which comprises the following steps: firstly, preparing spraying powder by using alloy components with a melting point higher than 1000 DEG C in a titanium alloy as raw materials, and preparing spraying liquid by using alloy components with a melting point lower than 1000 DEG C in the titanium alloy as raw materials; then spraying spraying liquid adhered with spraying powder to the surfaces of the sponge titanium particles, preparing the sponge titanium particles with alloy component layers deposited on the surfaces, fully mixing the sponge titanium particles with the alloy component layers deposited on the surfaces and the sponge titanium particles without the alloy component layers deposited on the surfaces, pressing and assembling and welding to form the consumable electrode, and finally, the consumable electrode is subjected to vacu