FIELD: chemical industry, more particularly purification of sodium chloride solution from calcium and magnesium salts. SUBSTANCE: method comprises using, as flocculant "product of reaction of polyacrylamide, alkali and flotation reagent consisting of mixture of monobutyl ethers, polypropylene glycols of general structural formula: 
EFFECT: reduced amount of flocculant used and higher degree of purification of solution and lower expenses at further filtration stage prior to feeding it for electrolysis. 3 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PURIFYING SODIUM CHLORIDE SOLUTION | 1999 |
|
RU2176616C2 |
| SODIUM CHLORIDE PURIFICATION PROCESS | 1999 |
|
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|
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| METHOD OF EVAPORATION OF ALKALI SOLUTIONS | 2000 |
|
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| METHOD OF EVAPORATION OF AQUEOUS ALKALI-SALT SOLUTIONS | 2000 |
|
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| METHOD OF CONCENTRATION OF ALKALI SOLUTIONS THROUGH EVAPORATION | 2000 |
|
RU2197428C2 |
