不同原料配比对混合后物料物理特性的影响

发布时间：2018-04-25 01:29

  本文选题：饲料 + 原料　； 参考：《饲料工业》2017年03期

【摘要】：为探究乳仔猪料配方中大宗原料的不同配比对混合后物料物理特性的影响,明确不同原料配比的配方在调质、膨化等过程中的基本物理特性,为饲料企业配方设计及生产提供理论支持。文章在查阅大量文献的基础上,以乳仔猪料配方中的膨化玉米、豆粕、DDGS、乳清粉四种原料为研究对象,分别设置不同的质量分数水平,其中玉米设6个水平、豆粕、DDGS、乳清粉分别设5个水平,共21个配方,以研究不同原料配比的配方对混合后物料热导率、比热、摩擦系数和休止角的影响。结果表明,饲料配方中原料质量分数的变化对混合后物料的物理特性影响比较显著。随着配方中膨化玉米、豆粕、DDGS、乳清粉(35℃以上时)质量分数的变化,混合后物料比热均没有显著的差异,而热导率差异显著,所以相同的调质时间内配方中由于原料的组成不同所达到的调质效果会不同。膨化玉米质量分数增加会显著增大混合后物料的滑动摩擦系数并减小热导率。对于需要低温制粒以保护配方中热敏物质的配方可适当增加膨化玉米的添加量,以减缓调质过程中热量的传递。
[Abstract]:In order to investigate the effect of different proportions of bulk raw materials in the formula of piglets on the physical properties of raw materials after mixing, the basic physical properties of the formulations with different proportions of raw materials in the process of tempering and puffing were clarified. To provide theoretical support for formula design and production of feed enterprises. On the basis of consulting a large number of literatures, four kinds of raw materials such as expanded corn, soybean meal DDGSand whey powder in the formula of piglets were studied, and different mass fraction levels were set up, among which 6 levels were set up for corn. Soybean meal DDGS and whey powder were divided into 5 levels and 21 formulations were used to study the effects of different ratios of raw materials on the thermal conductivity, specific heat, friction coefficient and angle of repose. The results showed that the physical properties of the mixed materials were significantly affected by the change of the raw material mass fraction in the feed formulation. With the change of the mass fraction of corn, dregs and whey powder above 35 鈩，

本文编号：1799169