Method for treating electric precipitation ash of sintering machine head

The invention discloses a treatment method of sintering machine head electric precipitation ash, belongs to the field of a waste comprehensive utilization system, and solves the technical problems that the sintering machine head electric precipitation ash is treated with low cost and low energy consumption, and the potassium element in the sintering machine head electric precipitation ash is extracted and recycled to prepare agricultural potassium chloride. The method for preparing the agricultural potassium chloride comprises the following steps: according to the percentage content of K2O in the electric precipitation ash, mixing and proportioning the electric precipitation ash to obtain an electric precipitation ash ingredient with the K2O content of 10-15%; uniformly mixing and grinding the electric precipitation ash ingredients obtained in the step 1 until the granularity is less than 150 meshes; performing first water dissolution on the electric precipitation ash which is uniformly mixed and ground in th