甘蔗渣冷压成型的影响因素研究

Factors affecting cold pelleting of sugarcane bagasse

为探清甘蔗渣冷压成型的可行性及其影响因素,利用万能试验机和专门设计的压缩模具对甘蔗渣进行冷压成型试验,探究蔗渣粒径、含水率、压缩速率和保压时间对最大成型压力、压缩能耗、松弛密度以及成型颗粒耐久性的影响。结果表明:含水率、粒径和保压时间对试验指标均具有显著性影响,而压缩速率的影响不显著。综合分析得到甘蔗渣冷压成型的最佳工艺参数为:含水率10%~15%,粒径小于5 mm,压缩速率50~75 mm/min,保压时间30 s。该研究为甘蔗渣的固化成型和资源化利用奠定了基础。

In order to verify the feasibility of the cold pelleting for sugarcane bagasse,it was used a four-factor cold pelleting experimental design to determine the effects of the raw material moisture content,particle size,compression speed,and the holding time on the maximum pressure,energy consumption,pellet relaxed density,and durability using the universal tester and the designed mold.The result showed that moisture content,particle size and the holding time had certain effect on the technical indicators;The influence of compression speed on all the experimental indicators was not significant.The optimal pellet process parameters were:10%~15%moisture content,0~5 mm particle size,50~75 mm/min compression speed,and 30 s holding time.