Method for resource treatment of waste miscellaneous salts produced during desulfurization of coking waste gas

The invention discloses a method for resource treatment of waste miscellaneous salts produced during desulfurization of coking waste gas. The method comprises the following steps: efficiently precipitating thiocyanate radicals in the waste miscellaneous salts by using copper sulfate, and carrying out solid-liquid separation to obtain a salt solution and a precipitate; performing heat treatment onthe precipitate to obtain copper oxide, and regenerating the copper oxide and waste acid of an iron and steel plant into copper sulfate for recycling; oxidizing thiosulfate radicals in the salt solution via micro-nano bubbles to obtain a sulfate solution; and then under the condition of grinding or magnetic stirring, replacing sulfate with calcium sulfate, and directly returning regenerated ammonia and sodium alkali to a desulfurization system for coking waste gas. According to the method, the difficulty of separation and purification of low-value miscellaneous salts is avoided, short-process,strong-stability and high