阐述了喷浆造粒内分极 ,内返料技术在转鼓造粒工艺中应用的理论和技术问题。通过模型实验和工业试验 ,在理论上和工程技术方面已基本解决了内分级 ,内返料在转鼓造粒工艺中应用的问题 ,为彻底消除转鼓造粒工艺流程中存在的弊端 ,提高经济效益和工厂环境效益提供了一种好的途径 The theoretical and technical problems of the application of the inner and outer material returning technology in drum granulation process are expounded. Through the model experiment and industrial experiment, the problem of using internal classification and inner material returning in the drum granulation process has been basically solved both theoretically and engineering. In order to completely eliminate the disadvantages existing in the drum granulation process, Economic benefits and environmental benefits of the factory provides a good way