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Why does wet hair desulfurization always provide slurry and the ph is not long? And the slurry on the dewatering belt is white, which seems to be unresponsive?
The former does not know what the supply is, so it is difficult to make a judgment. Dehydration Dehydration generally means that calcium sulfite hemihydrate is not well oxidized into calcium sulfate, which makes dehydration difficult.

If there is hydrochloric acid on site, you can take out the white slurry and add some hydrochloric acid. If there is strong pungent SO2, that is the reason. If it is only unreacted calcium carbonate, the gas will not smell very strong.