摘要
以玉米秸秆、锯末、棉杆为原料,进行改进后热压缩成型工艺试验,通过松弛密度这一指标得到最佳工艺参数范围;并利用OLYMPUS BX51-金相显微镜观察玉米秸秆成型后颗粒的微观形貌,从微观角度研究成型工艺参数与成型块微观结构之间的关系。试验结果表明,最佳参数范围是,粒度0～2mm、含水率15%～23%、温度130℃～150℃、长径比5.28;以玉米秸秆为例,微观形貌分析得出的最佳工艺参数范围与试验得出的基本一致。
Corn straw,powder sawdust and cotton straw were referred as feedstock.The improved heat forming experimental study on the pelleting technology of the biomass materials was carried out and the best molding processing parameters scope was got by measuring relaxed density.The microcosmic structure of corn straw pellet was observed through OLYMPUS BX51-metallographic microscope and the relationship between molding process parameters and forming microcosmic structure of corn straw pellet was studied from the microscopic view.The results show that the best molding processing parameters scope is as follows：particle size 0~2mm;moisture content 15%~23%;temperature 130℃~150℃ and aspect ratio 5.28,which is basically in accordance with microcosmic structure analysis.
出处
《塑性工程学报》
CAS
CSCD
北大核心
2012年第3期98-104,共7页
Journal of Plasticity Engineering
基金
国家自然科学基金资助项目(50875105)
关键词
生物质
热压成型
微观形貌
松弛密度
biomass
hot-forming
microcosmic structure
relaxed density
