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碳铵基长效复合肥是以碳铵为主要氮素来源，以富腐植酸的风压煤为有机质，无机、有机混配的复合肥。本文介绍了碳铵基长效复合肥生产中冷挤压造粒技术及独特的转筒冷风干燥工艺。长效颗粒复合肥经包膜后处理后颗粒强度及稳定性提高，存放时间延长，达到养分缓释，长效的目的。
Ammonium bicarbonate long-acting compound fertilizer is based on ammonium bicarbonate as the main source of nitrogen to rich humic acid wind coal as organic matter, inorganic, organic compound fertilizer. This article describes the production of ammonium bicarbonate long-term cold extrusion granulation technology and a unique drum cold wind drying process. Long-acting particle compound fertilizer by post-coating particle strength and stability, storage time extended to achieve sustained-release nutrients, long-term purpose.