摘要
为了确定最佳的苜蓿草颗粒产品制粒成型工艺,以苜蓿草粉为制粒物料,通过环模制粒过程的模拟试验,利用二次回归正交旋转试验设计,探讨了制粒密度与挤出力、物料含水率、草粉粒度的关系,建立了各因素与制粒密度之间的数学模型。试验数据分析显示:建立的回归方程显著;3个因子对制粒密度影响大小顺序为挤出力、含水率、草粉粒度;通过方程模拟选优得出模拟试验条件下的最优参数组合为:挤出力5.47kN、含水率16.96%、草粉粒度6.34mm,即制粒密度为最大值1.241g/cm3。该研究可为提高草颗粒及其它颗粒物料产品的质量提供指导。
To obtain the best pelletizing process of alfalfa pellet,the granulated alfalfa as the pelletizing material,through the simulation experiment of pelletizing with ring die and using the quadratic regression orthogonal rotational combining design,the relationships of granulation density with extrusion force,material moisture content and size were studied,and the mathematical model between factors and the density of the granulation was established.The result showed that：regression equation was significant;the three factors affecting the density of the granulation was：extrusion force material moisture content size.Through the simulating excellent-choosing equation,the best parameter combination under the simulation experiment conditions was obtained as follows：extrusion force was 5.47 kN,the material moisture content was 16.96%,size was 6.34mm,the density of the granulation was 1.241g/cm3.The results can provide academic guidance for improving the quality of alfalfa pellet or other granular products.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2011年第11期354-358,共5页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家自然科学基金(51065001)
甘肃省教育厅资助项目(1002-10)
关键词
工艺控制
优化
回归分析
苜蓿草颗粒
制粒过程模拟
二次正交旋转回归组合设计
参数
processing control
optimization
regression analysis
granulated alfalfa
pelleting process simulation
quadratic regression orthogonal rotational combining design
parameter
