Preparation method for iron and zinc glycine complex

Abstract

The invention discloses a preparation method for a iron and zinc glycine complex. The preparation method comprises the following steps: adding glycine, a zinc raw material, ferrite and a solvent into a reaction device, wherein the mole ratio of a zinc element in the zinc raw material to an iron element in the ferrite is controlled to be 1: 5-5: 1, and a ratio of the mole number of the glycine to the total mole number of the zinc element and the iron element is 1: 1-2.2: 1; after uniform stirring, controlling the reaction temperature and the pH value in the whole process, performing discharging, cooling, crystallization and separation after the reaction is fully completed, washing crystals, and performing drying, smashing and screening to obtain the finished product, namely the iron and zinc glycine complex. The preparation method disclosed by the invention has the advantages of simple technical step, low cost, greenness, environment friendliness, high product purity, stable quality, less possibility in color change in producing and preparing process and the like.

Description

technical field [0001] The invention relates to a preparation method of a glycine complex, in particular to a preparation method of a glycine iron-zinc complex. Background technique [0002] Iron and zinc are essential trace elements for animals such as poultry and livestock. They exist in humans and animals in the form of proteins and metalloenzymes, which can accelerate growth and development, promote blood hemoglobin production, improve taste, regulate body immunity, prevent infection and promote wound healing. functions such as healing. Therefore, iron and zinc should be added to the feed for normal growth of animals. [0003] For a long time, trace elements such as zinc and iron have been added to compound feed in the form of compounds in various forms through simple mixing. Such forms of organic or inorganic trace elements can easily cause the following problems: ① The inorganic sulfates in ferrous sulfate and zinc sulfate and ferrous glycinate announced in the natio...

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Problems solved by technology

Such forms of organic or inorganic trace elements can easily cause the following problems: ① The inorganic sulfates in ferrous sulfate and zinc sulfate and ferrous glycinate announced in the national standard GB / T21996-2008 are easy to combine with the anti-nutritional factors in the feed Lead to a decrease in the bioavailability of organic trace elements iron and zinc and inorganic trace elements iron and zinc

[0006] 1) Glycine complex products are mainly based on monomers. Even if there are iron-zinc glycine complex products, it is only a simple mixture of ferrous glycinate and zinc glycinate. Complicated, and the mixing uniformity is poor; in addition, some of the existing mixture products are also affected by their mixed carriers, with pockmarks and yellow spots, which affect the market sales of the products. Often only metals and glycine can be detected in these simple mixture products content, there is no way to determine its structure and exact component content, and the product quality is not easy to control;

[0007] 2) In the existing conventional synthesis reaction process, due to the influence of raw materials and by-products, even if the iron-zinc glycine complex is purified by crystallization and washing crystals, insoluble impurities, macromolecular organic matter and associated crystals still exist in the product The reaction by-products, the purity of the product still needs to be improved;

[0008] 3) In the existing conventional preparation process of copper and zinc glycine complexes, affected by the process steps of grinding operation and washing operation, not only the output of the product is small, which is not conducive to industrial production, but also there may be some untreated compounds in the product. The raw materials after the reaction will affect the product quality and process cost;

[0009] 4) Ferrous glycinate monomer is easily oxidized into iron glycinate by oxygen in the air during the production and processing process, and then causes discoloration; while the absorption and utilization rate of ferric iron in iron glycinate by animals is extremely low;

[0010] 5) Zinc glycinate products have problems such as poor dispersion and easy moisture absorption and caking

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