利用不同配比的物料(蛇纹石、石灰石、橄榄石)与硫酸反应,并添加硫黄造粒制备高硫镁肥。分析了肥料制备过程以及肥料总硫含量和颗粒分级硫含量受物料种类、硫酸浓度、反应温度及水分添加量等的影响。确定了在110~118℃下反应,硫能够均匀分散于肥料中,且石灰石肥料与蛇纹石肥料相比,易于造粒,硫含量高。 Using different proportions of materials (serpentine, limestone, olivine) and sulfuric acid reaction, and add sulfur granulation Preparation of high sulfur magnesium fertilizer. The effects of material type, concentration of sulfuric acid, reaction temperature and amount of water added on the process of fertilizer preparation, the total sulfur content of fertilizer and the fractionated sulfur content were analyzed. The reaction was confirmed at 110 ~ 118 ℃, sulfur can be evenly dispersed in the fertilizer, and limestone fertilizer compared with the serpentine fertilizer, easy granulation, high sulfur content.