风化煤腐植酸活化效果研究及其缓释肥生产工艺探讨_吴钦泉.pdf

研究论文 腐植酸 2016 年第4期 风化煤腐植酸活化效果研究及其缓释肥生产工艺探讨 吴钦泉1，2 路艳艳1，2 陈士更1，2 洪丕征1，2 吴凤林1，2 郭新送1，2 丁方军1，2，3* (1 山东农大肥业科技有限公司 泰安 271000 2 山东省腐植酸高效利用工程技术研究中心 泰安 271000 3 山东农业大学资源与环境学院 泰安 271018) 摘 要：为提高风化煤中腐植酸的活化效率，采用氢氧化钾和熔融尿素的活化及络合工艺，对风化煤中的惰性 腐植酸进行脲碱双效活化。结果显示，与未处理的样品相比，活化后的样品总腐植酸含量增加4.0％～6.4％， 游离腐植酸含量增加2.6％～3.9％，水溶性腐植酸含量提高15.67～25.75倍。结合常规复合肥生产工艺，将脲 碱活化后的腐脲液喷浆造粒，形成活性腐植酸缓释肥。该工艺将风化煤腐植酸双效活化与复合肥生产相结合， 操作简单、成本低、生产能力大，具有极好的应用前景。 关键词：风化煤 活化 活性腐植酸缓释肥 生产工艺 中图分类号：TQ314.1，TQ444.6 文献标识码：A 文章编号：1671-9212(2016)04-0030-04 Research on the Activation Effects of Weathered Coal Humic Acid and Discussion about the Production Process of Its Slow-release Fertilizer Wu Qinquan1, 2, Lu Yanyan1, 2, Chen Shigeng1, 2, Hong Pizheng1, 2, Wu Fenglin1, 2, Guo Xinsong1, 2, Ding Fangjun1, 2, 3* (1 Shandong Agricultural University Fertilizer Science and Technology Co. Ltd., Taian, 271000 2 Engineering and Technology Research Center of High Effi cient Utilization of Humic Acid in Shandong Province, Taian, 271000 3 College of Resources and Environment, Shandong Agricultural University, Taian, 271018) Abstract: To improve the humic acid activation effi ciency of weathered coal, the inert humic acid from weathered coal was conducted urea-alkali double activation by using the potassium hydroxide and melting urea activation technology. The results showed that compared with the untreated samples, the total humic acid and free humic acid contents of ～ ～ activated samples were increased by 4.0% 6.4%, 2.6% 3.9% respectively, and the water soluble humic acid contents ～ of