Low-temperature boiling chloridizing process

The invention provides a low-temperature boiling chloridizing process. The low-temperature boiling chloridizing process comprises the following steps of: A. adding the first batch of carbonization blast furnace slag to a low-temperature boiling chloridizing furnace, then introducing nitrogen with the temperature being 650 DEG C to 700 DEG C so that temperature in the furnace rises to 350 DEG C to 380 DEG C; B. introducing pure chlorine to the low-temperature boiling chloridizing furnace and continuously introducing the heating nitrogen simultaneously so that the temperature of the carbonization blast furnace slag in the low-temperature boiling chloridizing furnace rises at a speed of 300 DEG C/h to 400 DEG C/h; C. adding the second batch of carbonization blast furnace slag to the low-temperature boiling chloridizing furnace when the temperature of titanium carbide rises to 440 DEG C to 510 DEG C, replacing the heating nitrogen by the nitrogen at room temperature, and controlling the temperature in the furnace