摘要：为了得到生物质粉体并使其产量最大化, 采用分级式冲击磨在干法状态下制备玉米秸秆粉体, 考察锤头安装方式、进料方式、轨道与锤头间距和系统流量对粉体产量的影响。结果表明, 磨盘上方安装锤头的情况下玉米秸秆粉体产量较高;上进料时粉体产量比下进料时提高15.89%;轨道间距为57 mm时粉碎效率较间距为35 mm时高;在一定范围内, 粉体产量随着系统流量的减小而提高;最佳条件下, 平均粒径为30.13μm的玉米秸秆粉体产量高达103.4 kg/h。

关键词：分级式冲击磨;玉米秸秆粉体;产量

Abstract：To get biomass powders and maximize the production of biomass powders, the classify-impact mill was adopted to grind corn stove powders with the drying method. The effects of mounting means of hammers, feeding in mode, distance of orbit and hammers and flow of the system were discussed. The results show that the maximum yields of the corn stove powders is gotten when the hammers are mounted under the millstones. Comparing with the lower feeding mode, the production of the corn stove powders is improved 15.89% when it is the upper feeding mode. When the distance of orbit and hammers is between 5 to 7 mm, the pulverization efficiency is higher than that of between 3 to 5 mm. The yields of the corn stove increase with the decrease in flow of the system within the specific limits. The yield of the corn stove powders is 103.4 kg/h when the mean particle size of corn stove powders is 30 μm under the optimized conditions.

Keywords：classify-impact mill; corn stover powder; yield