The iron removal is a key process of hydrometallurgy, in which zinc calcine and oxygen are added to zinc sulfate solution to remove the impurities of iron, and to turn the iron ion in solution into goethite precipitation,so the purpose of iron removal can be achieved. In actual production, the iron ion concentration of iron removal process is obtained by manual testing, bringing large time delay and making the real-time control of iron removal process extremely difficult. Therefore, it is necessary and sign...
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