CS219414B1 - Method of making the stabil homogennous microgrannulated mixture of biogennous microelements as admixture in the fodder of husbandra animals - Google Patents

Description

(54) A method for producing a stable homogeneous microgranular mixture of biogenic microelements as an additive for animal feed

The invention relates to a process for the production of a stable homogeneous microgranular mixture of biogenic microelements as a feed additive for livestock.

As is known in practice, biogenic micro elements (copper, iron, zinc, cobalt, manganese, etc.) need to be added to the livestock in intensive large-scale farming, which the animals cannot obtain themselves by searching for food as in natural conditions, namely preferably in the form of complete feed mixtures, together with other necessary substances such as vitamins, antibiotics, amino acids, various silencers, biocatalysts, etc.

The current technology for the production of biogenic microelement mixtures is based primarily on their dry inorganic salts, which are mechanically crushed to the desired grain size and after mixing in the required ratio they coat a protective layer to prevent decomposition of some cations, especially copper, on labile organic compounds. present in the compound feed. This technology has a number of drawbacks. In addition to the dustiness of the environment and the health of the operator, the most serious drawback is the unstable homogeneity of the produced mixture. Mechanical crushing of the salt crystals yields a varying proportion of smaller and larger particles which have a significantly different bulk density. If the ingredients thus prepared are mixed with different specific gravity and bulk density according to the specified recipe, the mixture will not be homogeneous, but a mixture that is easily susceptible to mechanical separation due to different bulk or specific gravity. transport. Violation of the homogeneity of the mixture can lead to dangerous uneven representation of individual components in the feed ration, which in practice can manifest itself harmfully either by deficiency or overdose of some component and thus by serious disorders of animal health condition or even by their death.

In another method (U.S. Patent No. 111,467), soluble trace element salts such as manganese or copper sulphate, ground to the required grain size, are dry mixed with anhydrous calcium sulphate, after which the resulting mass is granulated after solidification with the calculated amount of water. obdukuje. A disadvantage of this method is that it is limited to the processing of only one kind of salt of the trace element in the solid state, which is additionally wound in a further operation. The final mixture of trace element complex according to the respective recipe must be prepared by further mechanical mixing of the individual components, at

21S414, whereby all the aforementioned shortcomings of imperfect homogeneity with the possibility of separation appear.

Therefore, one of the important criteria of the final product is perfect homogeneity and perfect stability, which would guarantee the compatibility of the compound feed or feed supplement with reliable and accurate dosing.

It is an object of the present invention to provide a stable homogeneous microgranular mixture of biogenic microelements as an additive for livestock feed, where the shortcomings of the prior art have been overcome.

The principle of this method is to treat the soluble salts of selected biogenic microelements, preferably sulfates, in an aqueous solution at a temperature above 33 ° C with a soluble or insoluble salt whose anion can form an insoluble salt with the cation of the biogenic microelement salt. to form, with the anion of the biogenic microelement salt, a crystal hydrate capable of binding water from the solution to the crystal lattice upon cooling the reaction mixture to a temperature below 33 ° C.

Anhydrous sodium carbonate may conveniently be used as the soluble salt.

The process according to the invention is based on the assumption that a truly homogeneous system is a solution of the respective starting components which, by appropriate conversion to a solid insoluble state, also yields a homogeneous product, the smallest particles having exactly the same composition as the other particles. the risk of homogeneity violations.

The process according to the invention perfectly fulfills this requirement. The product obtained is a solid hard material containing all the original and added components, including water, which is bound by the forces of the crystal lattice. By changing the pH of the environment into the acidic area (in the gastrointestinal tract, especially in the stomach of the animal) the product goes into solution so that the organism can make maximum use of the individual components (cations).

The insoluble form of cations at neutral pH also ensures that there will be no disturbance to other sensitive components of the compound feed. Therefore, it is advantageous that the need for induction is eliminated. From a technological point of view, the most important is the fact that the product obtained by the process of the invention does not need to be dried at all.

Example 1

In a duplicator boiler equipped with a direct steam inlet, 350 kg of crystalline copper sulfate, 50 kg of crystalline iron sulfate, 90 kg of crystalline zinc sulfate and 50 kg of crystalline manganese sulfate are dissolved in 160 liters of water with stirring and heating. 200 kg of calcined soda are gradually added to the resulting solution while stirring. After the reaction has taken place, the viscous mass is discharged into trays, where it is solidified by cooling to a temperature below 30 ° C without the need for drying. The solid mass is ground and sieved to the desired grain size.

Example 2

The salt solution as in Example 1 is fed hot into a ball mill in which 100 kg of calcined soda and 100 kg of micronized limestone are suspended and the reaction is completed with stirring in a mill. After solidification, the mass is ground using metal or stone balls and screened.

Example 3

The salt solution as in Example 1 is discharged in the form of a viscous mass onto a cooled rotating cylinder after addition of 20 (0 kg of soda ash), whereby the mass solidifies, while being removed from the cylinder surface with a knife, ground and screened.

Example 4

The salt solution, after the addition of calcined soda, is discharged into the heated container while hot and dispersed to a powdered product by means of a cold compressed air ejector, which is screened.

Example 5

After the addition of calcined soda, the salt solution is discharged hot to the heated tank, sprayed into a cooling tower by means of a mechanical rotor and finally screened.

Example 6 kg of crystalline copper sulfate, 12 kg of crystalline iron sulfate, 21 kg of zinc sulfate and 7 kg of crystalline manganese sulfate are dissolved with stirring in an enamelled duplicator in 100 liters of water, acidified with 0.5 kg of concentrated sulfuric acid, . The resulting solution is then introduced into the mixing drum in portions with 100 kg of micronized limestone. After the reaction, a initially thin, later self-curing mixture of basic sulphates with calcium carbonate is obtained, which is mixed with 780 kg of micronized limestone in a screw homogenizer with the addition of 30 g of potassium iodide and at the same time homogenized. 1060 kg of microgranular product is obtained, which is screened and filled. The mineral feed additive thus prepared contains all trace elements suitable for pig fattening mixtures.

Claims (2)

SUBJECT A process for the production of a stable homogeneous microgranular mixture of biogenic microelements as an additive for animal feed, characterized in that the soluble salts of the selected biogenic microelements, preferably sulphates, are treated in an aqueous solution at a temperature above 33 ° C with a soluble or insoluble salt. whose anion can form a soluble salt with the biogenic microelement salt of the invention and whose cation can form a crystal hydrate with the biogenic microelement salt anion capable of binding water from the solution to the crystal lattice after cooling the reaction mixture to a temperature below 33 ° C. 2. A process according to claim 1 wherein the soluble salt is anhydrous sodium carbonate.