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介绍由氯化钾制取无氯钾肥——硫基ＮＰＫ的生产工艺，并与传统的无氯ＮＰＫ工艺进行投资、生产成本的经济比较
This paper introduces the production process of chlorine-free potash-sulfur-based NPK from potassium chloride, and compares it with the traditional non-chlorine NPK process to make an economic comparison of production costs