脱硅渣合成钾肥的结晶性能

Crystallizability of Potash Fertilizer Synthesized by Desiliconized Slag

以铁水脱硅渣和碳酸钾为原料合成钾肥,利用X射线衍射对钾肥试样的结晶性能进行了分析;考察了氧化钾加入量,加热温度,保温时间,冷却方式以及氧化物添加种类对合成钾肥结晶性能的影响·研究结果表明,利用铁水脱硅渣和碳酸钾为原料可以合成钾肥;合成的钾肥由含钾结晶相Ca1 917K0 166SiO4,非含钾结晶相Ca2SiO4和含钾非结晶相组成;在本研究条件下,各种因素对合成钾肥的结晶性能没有明显影响·

The potash fertilizer synthesized using desiliconized slag and potassium carbonate is discussed, as well as the influences of the amount of potassium oxide as main raw material and its heating temperature, holding time and cooling mode and amounts of other oxides added on its crystallizability. The results showed that the potash fertilizer can be synthesized using desiliconized slag and potassium carbonate, and the synthesized potash fertilizer is composed of K-containing crystalline Ca_(1.917)K_(0.166)SiO_4, crystalline Ca_2SiO_4 and other K-containing amorphous compounds. The factors as above were proved no obvious effects on the crystallizability of the fertilizer.