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介绍了ＭｇＳＯ４·７Ｈ２Ｏ和ＫＣｌ为原料，利用离子交换来制取Ｋ２ＳＯ４的方法．该法优于其它制取Ｋ２ＳＯ４的工艺，其主要优点是设备及操作简单，无污染，耗能低等．
The method of preparing K2SO4 by ion exchange was introduced with MgSO4 · 7H2O and KCl as raw materials. The method is superior to other processes to produce K2SO4, its main advantage is the equipment and simple operation, no pollution, low energy consumption.