The invention relates to a process for separation of iron impurity from concentrated salts solution to provide a simple, fast and effective process for separating Fe from the solution without heating. By said process, the iron impurities in a number of salts containing more than 10ppm of iron impurities can be reduced to 0.5 ppm or less. The process features simple in operation, less production period, less energy consumption, less deteriorated gas, less contaminated water and less scraped slag. The recovery rate is almost upto 100%. The purified matter is in a stable state. It is suitable in large scale to separate the iron impurities from metallic zine, cadimium, alkaline matels and alkaline earth metal salts of three strong acids. As for other salts, it is also applicable, should their pH value be greater than 5. |