Two main section-evaporation and cooling crystallization was reconstructed in Double Decomposition Reaction Produce KNO3, and production of reconstruction anteroposterior was contrasted.

• 对复分解法生产硝酸钾工艺中的两个主要工段:蒸发、冷却结晶进行改造,并对改造前后的生产情况进行了对比。