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A method for the preparation of alkali metal sulfate by reaction of magnesium sulfate solution with a solid alkali metal chloride in ammonium salt hold strength solutions
A method for the preparation of alkali metal sulfate by reaction of magnesium sulfate solution with a solid alkali metal chloride in ammonium salt hold strength solutions
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机译:一种硫酸镁溶液与固体碱金属氯化物在铵盐保持力溶液中反应制备碱金属硫酸盐的方法
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摘要
Conc. or satd. MgSO4 soln is mixed with a recycled soln contg. ammonia and ammonium salts so that Mg(OH)2 having good filtering properties is precipitated and separated. A part of the remaining soln is recycled whilst the remainder is treated with a solid alkali chloride (pref. NaCl or KCl) and NH3 is introduced whereby alkali sulphate crystallises out and is separated. A part of the remaining soln is recycled to the Mg(OH)2-precipitation stage; whilst ammonia is recovered from the other part and returned to the NH3-saturation stage. High alkali sulphate yields are obtd.
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