The effect of pH. Hypochlorite is a weak acid salt, and its oxidation capacity is different at different pH values. In the alkaline medium is more stable, and in the acidic and neutral medium is unstable, and decomposition is rapid, generating strong oxidation components. Under the condition of weak acidity (Ph5 ~ 6), its activity is the highest, and the oxidation capacity is the strongest, at this time, the bivalent iron ion is relatively stable, and the iron can be removed by PTMS magnetic separation.
The effect of temperature. With the increase of temperature, the hydrolysis rate of bleach is accelerated, the bleaching speed is also accelerated, and the bleaching time is shortened. However, when the temperature is too high, the heat consumption is large, and the decomposition speed of the agent is too fast, which will cause waste and pollute the environment. In practice, PTMS magnetic separation can be achieved by increasing the dose, adjusting pH value and prolonging bleaching time at room temperature.
The effect of dosage. The optimal dosage is related to the characteristics of raw ore, the degree of impurity oxidation, reaction temperature, reaction time and pH value, etc. Too large or too small dosage will affect the iron removal effect of PTMS magnetic separation.
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