One-step method for obtaining potassium sulfate and processing of lye
2021 ◽
Vol 57
(2)
◽
pp. 226-235
Keyword(s):
Method of obtaining potassium sulfate with basic substance content higher 92 % shown. Process conditions: 110 % KCl (10 % excess substance from stoichiometry), mixing at temperature higher 95 °C during 30 min, mixing at temperature 0 °C for 1 hour, stirrer speed 500 rpm, sludge washing 15 % water from wet sludge weight, drying the washed sludge at 70–80 °C during 1 hour. The degree of evaporation of the solution at which the double salt of potassium and ammonium sulfate precipitated was determined. The degree is 30 % at the evaporated suspension cooled, and is 45 % at hot filtration.
2019 ◽
Vol 375
◽
pp. 122000
◽
2021 ◽
Vol 1734
◽
pp. 012019
2002 ◽
Vol 43
(21)
◽
pp. 3887-3890
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