Abstract
A method has been developed for the disposal of quarry drainage waters, which ensures that they are not discharged into an open reservoir and reduce their anthropogenic impact on the environment. The direction of drainage waters from the limestone quarry into the technological process of preparing the raw charge reduces the consumption of circulating soda solutions and ensures higher extraction of potassium sulfate from soda solutions. The average increase in the yield of potassium sulfate from an increase in the content of sulfates in the liquid phase of the raw nephelinelimestone-soda charge is 4.0 tons per day or 1,460 tons per year.
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