新型加硫尿素产品的开发

Development of New Sulfur Coated Urea

采用硫磺粉和可降解高分子粘结剂包裹尿素制备了新型加硫尿素产品。制得的产品外观光滑、致密,球形好,粒度均匀,硫、氮含量及水含量、颗粒的抗压强度等指标均能满足产品的质量要求。该工艺简单易行,生产成本低。通过土柱淋洗实验对小试生产的新型加硫尿素产品养分释放特性进行了评价,结果表明,该肥料的缓释性能良好。

New sulfur coated urea products were prepared by the process of coating urea with sulfur powder and organic polymer binders. Technical indexes of the products satisfied the quality standard requirements completely. The process was simple, easy and low cost. The characteristics of nutrient controlled release of the products were evaluated by the soil column leaching experiments. The results indicated that the coated fertilizers had good slow -release performance.