Pellets Hardness Of 433 Principle
feed grain hardness, abide by the 433 principle of product design and processes.
Simply speaking , a particle is expected to change the formula, physical and chemical properties of materials, production process parameters determined in three areas, each of which accounted for 40%, 30%, 30%, which constitute a complete feed products particles.
Effect of particle formulation is mainly reflected in raw material compatibility, formulators need to be familiar with different quenching conditions and the granulation process on physical and chemical properties of materials, formulation design itself should determine the particle morphology and particle material hardness; often in customer service the company saw the formulator granted release formulation, production hard case made no grain. In the formulation, the formulation process parameters may be used include: quality factor, the mold coefficient, capacity factor, etc., and are mainly related to the granulation quality factor, the degree of influence on the formulation of the pellets was 40%.
Material changes in physical and chemical properties: the formulator is generally ignored or missing part, for example, gelatinization temperature of the raw materials, thermal temperature, shear properties, process changes; for example: pre-gelatinized maize universal critical temperature of 75 degrees , quenching temperature exceeds 75 to 76 degrees, will be a substantial increase in the degree of polenta, will significantly increase the hardness of the particles; and the pre-gelatinized wheat will have to be raised to a temperature above 86 degrees will produce a better effect gelatinization , and contrast the following quenching temperature 86 degrees, but to obtain a relatively loose particles. In order to improve the efficiency of the granulation, often added during feed production phospholipids, significantly affect the bonding properties of gelatinized starch; and the impact of material changes in production, the impact on the granulation is about 30%.
Technical parameters: it is refers to crush size material, quenched steam flow, quenching temperature, time, aperture ring mold, compression ratio, and a comparison between them and the like; finely divided material, has a larger surface area, but also after pasting the material has more performance bond, typically puffed corn after a steam quenched with higher bonding properties leaving the harder particles. The smaller the aperture ring mold, ring mold unit through the friction material, the higher the compression strength also produced larger particles it harder, not ring die compression ratio that can be fully represented; in accordance with the general use of the ring mold, influence of granulation is about 30%.
More than 433 principle, only represents the general case, not all the conditions are the same; because of a material change in one of the special requirements make a decisive impact on the granulation, such as meticulous pulverized material, due to the lack of mold making in the ring granulation process friction can not be granulated blocking machine situation; on the other hand, the feed industry in food processing technology heritage, almost no systematic training on the granulation process, more of an experience, even professional diversification graduate institutions, and there was little understanding of feed production technology and formulation of contents and summary.