气流粉碎植物样品工艺研究

Study on the Ultrafine grinding Technology of plants samples

【目的】通过气流粉碎的方法，对不同植物样品进行粉碎实验。【方法】应用流化床对喷式气流粉碎机对葡萄籽，生姜、茶叶．桔子皮植物样品进行超微粉碎，激光衍射粒度分析仪测定其粒度分布。以正交试验的方法确立进气压力，工作频率、样品初始粒度对气流粉碎工艺的影响主次关系。【结果】在工艺影响因素中，分级机的工作频率和进气压力对气流粉碎影响很大，而物料的初始粒度对粉碎的影响不大。在气流粉碎的最佳工艺条件下植物粉体粒度均达到微米级。【结论】运用流化床对喷式气流粉碎机可实现对植物样品的超微粉碎。

[Objective] The research aimed to investigate the optimum technical process for ultrafine grinding plants samples with jet mill. [Method] The fluidized bed spray Air-jet mill was utilized to ultrafine grinding different plants- grape seeds, ginger, tea leaf and orange peel. The particle size of final powder was tested by Laser Diffraction Particle Size Analyzer. The orthogonal test method was used to determinate the effective of pressure, classifier frequency and size of raw materials on the grinding technology. [Results] In all the factors, the classifier frequency and pressure affect the grinding technology greatly. In the optimum condition, all final powder size arrived micrometer. [Conclusion] The ultrafine grinding plant powder can be achieved by fluidized bed spray Air-jet mill.