FI84774C - Foerfarande Foer framstaellning av mineralalfoderblandning - Google Patents

Description

84774

The invention relates to a process for the preparation of a granular, dust-free, homogeneous and easily flowable mineral compound animal mixture.

Domestic animals, especially ruminants, but also e.g. horses need not only good and balanced organic feed but also a special ki-10 mineral feed mixture to achieve high yield and maintain health. Such a mineral feed mixture contains various calcium, magnesium, sodium and phosphorus compounds, such as calcium and magnesium phosphates, magnesium oxide, feed lime and / or table salt. In addition, the mineral feed mixture contains trace elements such as kupa-15, cobalt, zinc, manganese, iron and / or iodine compounds. The addition of vitamins, amino acids and selenium compounds to the mineral feed mixture may also be considered.

As is known, the preparation of a mineral feed mixture is carried out simply mechanically by mixing the dry components batch-by-batch with a vane or spiral mixer. When components with different grain sizes, including very fine and different densities, have to be mixed, separation can even take place during mixing, but especially during transfers and transports.

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In addition, the disadvantages of mineral-compound mixtures known for both production and use are harmful dusting. Known mixtures are not always free-flowing, i.e. easy to pour and dispense.

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Several methods have been proposed to reduce these disadvantages. GB 1,009,134 discloses a process in which an aqueous solution containing magnesium chloride is added to a dry mixture containing magnesium oxide, sodium sulphate or disodium phosphate and the resulting material is granulated and dried. The cores of granulation and granules are magnesium oxychloride, calcium sulphate or calcium phosphate, depending on the composition of the mixture.

2,84774 FI patent publication 67169 describes a method in which phosphoric acid is used to effect the granulation of mineral feed.

A homogeneous trace-containing table salt that is not free-flowing is obtained, according to U.S. Patent 2,744,823, by adding to the salt either a polyhydric alcohol such as sorbitol, propylene glycol, etc., or mineral oil. Trace elements (Co, Cu, Fe, Zn) adhere to the surface of the moistened salt granules. A similar method is described in SE patent 384783 for the preparation of a trace element concentrate for mixing in animal feed, including mineral feed. The base material is granular calcium phosphate (mixture of Ca (H 2 PO 4) 2 x H 2 O and Ca HPO 4 x 2 H 2 O) or granular sawdust or mussel shell, and the trace element binder is a polyhydric alcohol with a mixing time of 2-5 min.

U.S. Patent 3,468,667 discloses fat derivatives and oily substances for the dust binding of phosphates, including salts of fatty acids.

Molasses has been disclosed for dust binding alone (U.S. Pat. No. 4,252,831 and FI-A-52923) and in combination with green flour (NO Pat. 108375).

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With small amounts of the alcohol-water mixture 2-4%, dusting can only be prevented to some extent.

It is an object of the present invention to provide a process with a preferred embodiment for the preparation of a granular dust-free, uniform and easy-to-flow mineral feed mixture for animals.

In order to achieve the above and later objects, the invention is mainly characterized by adding to the mixture of mineral feed components at least 5% of a mixture of water and polyhydric alcohol having a water content of 70% to 30%, mixing the resulting mixture first into a sticky mass to at least partially dissolve the components 35, after which the mixing is continued for a further 3 84774 until a granular mineral feed product with the desired properties is formed.

When examining the possibilities of dust binding of mineral compound feeds, it was surprisingly found that the production of a granular, dust-free, homogeneous and easily flowable storable product is ensured by using a mixture of water and polyhydric alcohol of more than 5% and a sufficiently long mixing time. The small amount of fine powder produced during manufacture can be easily removed with a sieve and the result is a granular product with the desired 10 properties.

The method of the present invention is based on the partial slow dissolution of the ingredients caused by water, whereby a rather sticky mass is formed with the alcohol. This mass is further granulated upon mixing to a dust-free mixture. The water content of the water-alcohol mixture can vary in the range of 70 ... 30%. The amount of water in the total weight of the mixture can vary in the range of 3.5 ... 9%. The composition and quantity of the water-alcohol mixture must be chosen on the basis of the tests, as it depends on the quality and proportions of the raw materials in the mineral compound feed and the alcohol used.

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The alcohol used in the invention may be at least 2- or 3-value, but most preferably 5- or 6-value. Alcohol mixtures are also possible within the scope of the invention and higher alcohols than 5- or 6-alcohols can be present.

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Experiments have shown that it is appropriate to first select the coarse components of the mineral salt mixture which are sparingly soluble in water and which are first moistened with a water-alcohol mixture. The finely divided and water-soluble components are then added to the mixture thus obtained. The trace elements can be added as their compounds, but preferably bound to the lignosulfonate sugar mass, as disclosed in Finnish Patent Publication No. 51035. When the mixture is first mixed, it becomes a pasty mass, and when the mixture is continued, it changes into the final product having the Quality Factors sought in the invention.

4,84774

If necessary, an anti-caking agent known per se can be added to the feed mixture prepared by the method of the invention in order to improve the storage stability.

The following non-limiting example of the method of the invention is given

Dicalcium phosphate 2000 g - 20%

Coarse Magnesium Phosphate 1300 g - 13% part Edible salt 1300 g - 13% 10

To the above mixture is added 1100 g of a 50% water-sorbitol mixture, which is 11% of the amount of the final mixture. The final mixture thus contains 5.5% water. When the mixture is wetted, the following fines are added: 15 Feeding lime 3900 g - 39% and Lignosulphonate-sugar trace element combination (Lignox) 400 g - 4% 20 Lignox contains Cu, Co, Mn, Zn, Fe, I- compounds as follows: Cu 1.275%, Co 0.079%, Mn 0.488%, Zn 6.197%, Fe 0.251%, I 0.190%.

The above mixture was mixed with a dough mixer at 400 rpm. 75 minutes, a slight fine was separated by a sieve. Lop-25 as a wood product was thus obtained as a dust-free, homogeneous and easy-flowing product with a grain size of about 1-3 mm. The product did not clump in the bag in one week at a weight of 10 kg / dm3.

The following are claims within the scope of which the various details of the invention may vary.

Claims (8)

A process for producing a granular dust-free, liquid liquid mineral feed of uniform quality for animals, characterized in that at least 5% of a mixture of water and polyhydric alcohol whose water content is 70% is added in the mixture of the components of the mineral feed. % - 30%, that the obtained mixture is first mixed into a blemish pulp to at least partially dissolve the components after which Annu continues mixing for a long time, until a granular mineral feed product with desired properties is formed. 15 Process according to claim 1, characterized in that the amount of added water in the final mixture is selected in the range 3.5 ... 9%. 20 Process according to claim 1 or 2, characterized in that the trace elements are added to the mineral feed mixture bound to the lignosulfonate sugar mass. 4. A process according to any one of claims 1-3, characterized in that at least 2 or 3-worth of alcohol or a mixture of said alcohols is used in the process as an alcohol component. Process according to Claim 4, characterized in that the process uses 5- or 6-value alcohol or a mixture of said alcohols. Process according to any one of claims 1-5, characterized in that the coarse mineral components of the mineral feed are first wetted with an alcohol-water mixture and that the finely divided dusting feed components are added to the mixture after the above-mentioned stage. 7. A process according to any one of claims 1 * 6, characterized in that the manufacture of the final product is additionally used primarily to remove the fine powder. Process according to any one of claims 1-7, characterized in that in the mineral feed product produced according to the process, anti-caking barrier is added to improve the shelf life.