Abstract: [Objective] In order to provide study data for straw formula granulated feed production and processing in Xinjiang, this project aims to conduct experiments to determine the granulating process parameters of compound maize straw particles.[Method]By single factor and orthogonal experiments to analyze the influences such as the ratio of fine and coarse materials, water content of raw materials, raw material crushing length and feeding speed of various factors during the granulation process on indexes: the density of particles with straw feed after forming, powdering rate and molding rate to determine the optimum parameters of main processing technology of straw blended pellet feed.[Result]⑴ When the proportion of raw material and coarse material was less than 5∶5, the molding rate increased greatly, and the pulverization rate decreased greatly.When the proportion of raw material and coarse material was greater than 5∶5, shape index was not ideal and even appeared to be out of shape.The raw material flows directly from the granulator to the crushed state.When we took the pure thick ratio of materials 2∶8, the density of pellet feed and forming rate were maximum, and percentage of powdered pellets was minimum.⑵ When raw material moisture content was 12;, the density of pellet feed and forming rate were maximum, percentage of powdered pellets was minimum.⑶ When the raw material grinding length was 2 (The length was less than 3mm of maize straw mixture), the forming rate was at the peak and the pulverization rate was lowest.[Conclusion]⑴When raw material moisture content range between 10;-14;, particle shaping effect is better, with 12; of the raw material moisture content is optimal.⑵ The effects of different feeding speed on the density of pellet feed, forming rate and pulverization rate are not obvious.⑶ Through the orthogonal experiment and range analysis, we concluded that forage-concentrate ratio to the density of pellet feed and molding rate all have a significant impact, different moisture contents of grain feed raw material pulverization rate effect is remarkable, raw materials for different moisture contents made obviously effect on pulverization rate.⑷ Through the analysis of the comprehensive balance method, we have get primary and secondary order of four factors: forage-concentrate ratio>moisture>size>velocity.And the optimal production condition is A2B2C3D2.

摘要： [目的]确定秸秆配合颗粒饲料的制粒加工工艺参数,为新疆秸秆配合颗粒饲料的生产加工提供依据.[方法]采用单因素和正交试验法,分析配合颗粒饲料在制粒过程中精粗料配比、原料含水率、原料的粉碎长度及喂料速度多种因素,对秸秆配合颗粒饲料成型后颗粒的密度、粉化率及成型率等指标的影响,确定秸秆配合颗粒饲料主要加工工艺最优参数.[结果](1)原料精、粗料比例小于5∶5时,成型率大幅度升高,粉化率大幅度降低.精、粗料比例大于5∶5后成型指标均不理想,甚至出现不成型情况,原料从颗粒机中以粉碎后的状态直接流出.当精、粗料比例为2∶8时,颗粒饲料的密度、成型率均达到最高值,粉化率最低.(2)原料含水率为12;时,颗粒饲料密度、成型率均最高,粉化率最小.(3)原料粉碎长度≤3 mm,颗粒饲料密度及成型率达到最高值,粉化率最低.[结论](1)颗粒成型效果最好的原料含水率在10;~14;,以12;的原料含水率最优.(2)不同的喂料速度对颗粒饲料的密度、成型率及粉化率的影响均不明显.⑶通过正交试验和极差分析,原料不同精粗配比对于颗粒饲料的密度、成型率均有显著影响,原料不同含水率对颗粒饲料粉化率影响显著.⑷四因素影响主次顺序为:精粗料配比>原料含水率>原料的粉碎长度>喂料速度,较优生产条件为A2B2C3D2.