Method for directly carrying out innocent treatment on electrolytic manganese residues in filter pressing plate frames
A technology of harmless treatment and electrolytic manganese slag, applied in the direction of solid waste removal, etc., can solve the problems of increasing installation cost, increasing labor cost, increasing handling, etc. Effect
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[0012] A method of harmless treatment of electrolytic manganese slag directly in the filter press frame. The treatment agent of this method includes phosphate and calcium oxide (CaO). The electrolytic manganese slag processed by the present invention is the electrolytic manganese slag filter cake located in the filter press frame of the plate and frame filter press after being filtered; the phosphate is sodium dihydrogen phosphate (NaH 2 PO 4 ), magnesium oxide (MgO) and polyacrylamide [PAM, (C 3 H 5 NO) n ]; The steps of the method are as follows:
[0013] (1) Fully mix sodium dihydrogen phosphate and water, and then use the feed pump to inject into each filter press through the washing hole of the plate and frame filter press to wash the electrolytic manganese residue filter cake and collect the washed filtrate ;
[0014] Among them, the mass ratio of sodium dihydrogen phosphate to electrolytic manganese slag filter cake is 1 to 4%; the ratio of electrolytic manganese slag filter...
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