Industrial waste salt recycling method

The invention discloses an industrial waste salt recycling method. The industrial waste salt recycling method comprises the steps that industrial waste salts are subjected to high-temperature oxygen-enriched roasting, generated gas is subjected to acid cleaning and alkali cleaning purification and then returns to a roasting furnace for oxygen supply, roasted salts are dissolved with water and filtered, insolubles are removed, then ion exchange is conducted to further purify a salt solution, the salt solution meeting the salt electrolysis requirement is obtained, the salt solution is electrolyzed to obtain a the sodium hydroxide solution, and chlorine and hydrogen generated by electrolysis are subjected to mixed combustion and absorption to prepare hydrochloric acid. The industrial waste salt recycling method realizes resource regeneration on the spot in an industrial park where the waste salt is generated, the liquid hydrochloric acid and caustic soda are directly supplied to the park,and thus the caustic sod