Process for smelting titan dregs in ore-smelting furnace and device

The invention discloses a smelting method with higher thermal efficiency for smelting titanium slag by a submerged arc furnace and a device thereof. The smelting method is provided with material distribution points and corresponding blanking devices; a three-dimensional heat transfer mathematical model is used to perform temperature simulation to each distribution point, thereby adjusting the blanking amount of each distribution point. In the smelting device which is applicable to the method, a temperature measuring device is arranged in a body of the submerged arc furnace, signals sent from the temperature measuring device are input into a computer which outputs corresponding instructions to control the blanking devices, and a furnace cover is provided with evenly-distributed material distribution holes and the corresponding blanking devices. The method realizes the adjustment of the blanking amount according to the material melting speed of different power areas on the surface of a molten pool, maintains th