半干法镁基脱硫产物的水浸处理

Water soaking treatment of semi-dry magnesium desulfurization products

目前镁基脱硫产物的处理主要集中在湿法镁基脱硫产物,在半干法镁基脱硫产物的处理利用方面少有报道。为了解决这一问题,本文采用了水浸泡的方法对半干法镁基脱硫产物进行处理,研究浸泡次数、浸泡温度和浸泡时间对脱硫产物的影响,通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)、X射线荧光光谱仪(XRF)对产物进行分析。结果表明:水浸后的脱硫产物分为水溶液、固体块状物和沉渣三部分。溶液中的溶质主要是硫酸镁和氯化镁,第一次浸泡硫酸镁和氯化镁的浸出量达8.85%,远高于第二次浸泡的2.33%,浸泡温度为70℃时得到的硫酸镁和氯化镁比室温和50℃多0.14%~3%,浸泡3天后溶液密度几乎不再变化;固体块状物主要成分为氢氧化镁和少量的硫酸盐和氯化物;沉渣主要成分是氢氧化镁。水浸处理可以完成脱硫产物的再利用。

The treatment of magnesium-based desulfurization products was concentrated on wet magnesium-based desulfurization products,and few reported on the treatment and utilization of semi-dry magnesium-based desulfurization products.In order to solve this problem,the semi-dry magnesiumbased desulfurization product was soaked in water.The effects of soaking times,soaking temperature and soaking time on the desulfurization products were studied.The products were analyzed by X-ray diffraction(XRD),scanning electron microscopy(SEM),and X-ray fluorescence spectrometer(XRF).The results showed that the desulfurization products were divided into three parts after water immersion:aqueous solution,solid mass and sediment.The solute is magnesium chloride and magnesium sulfate in the solution,magnesium sulfate and magnesium chloride obtained in the first soaking account for 8.85%of the solution mass,which is much higher than 2.33%of the second soaking.When the immersion temperature is 70℃,the obtained magnesium sulfate and magnesium chloride are 0.14 to 3%more than room temperature and 50℃,there is almost no change in the density of the solution after soaking for three days.The solid mass is composed of Mg(OH)2 and a small amount of sulfate and chloride.The component of the sediment is Mg(OH)2.The water soaking treatment can complete the reuse of the desulfurization products.