Method for producing reagent grade sodium sulfate by using white carbon black mother solution
A technology of white carbon black and reagent grade, which is applied in the field of producing reagent grade sodium sulfate by using white carbon black mother liquid water, which can solve the problems of wasting sodium sulfate resources and polluting the environment, and achieves low impurity content, high quality and low water content Effect
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[0016] The method utilizing white carbon black mother liquor water to produce reagent grade sodium sulfate comprises the steps:
[0017] 1) Use a mixed cellulose microporous filter membrane (Φ≤0.15μm) to remove a small amount of solid residues such as white carbon black in the white carbon black mother liquor water from the white carbon black mother liquor water, and initially purify it into a sodium sulfate solution; 2) Take steps 1) The obtained 4L sodium sulfate solution was treated with a chelating resin to obtain a pure sodium sulfate solution with a percentage concentration of 5.6%. The chelating resin used Lanxiao Technology LSC-500 aminophosphonic acid resin, and its total exchange capacity was 1.95Mmol / g (dry), water content is 52-58%; 3) the percentage concentration that step 2) obtains is that the pure sodium sulfate solution of 5.6% obtains percentage concentration through electrodialysis concentration and is the pure sodium sulfate solution of 20%, used for electro...
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