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本发明涉及一种利用化钾转化法生产硫基氮钾复合肥的方法,该方法是将浓硫酸与氯化钾按等摩尔比在温度130～200℃下反应制得熔融状或固体硫酸氢钾;再与碳酸氢铵进行混合、搅拌、破碎,得到硫基氮钾肥,再添加磷铵、尿素,制得硫基氮磷钾复合肥,该方法具有工艺流程短、投资少、能耗
The present invention relates to a method for producing a sulfur-based nitrogen-potassium compound fertilizer by a potassium conversion method by reacting concentrated sulfuric acid with potassium chloride at an equimolar ratio at a temperature of from 130 to 200 ° C to obtain a molten or solid hydrogen sulfate Potassium and then mixed with ammonium bicarbonate, stirred and crushed to obtain a sulfur-based nitrogen-potassium fertilizer, and then added ammonium phosphate and urea to obtain sulfur-based NPK fertilizers. The method has the advantages of short process flow, low investment and energy consumption