KR880002186B1 - Process for producing solid salt of feed - Google Patents

Abstract

A solid salt which is not disintegratible by rainwater or potable water but is suitable for licking by livestock is prepd. by pressure- shaping the mixt. contg. edible salt, magnesium-compd and other adjuvants at the pressure of 450-700 kg/cm2. Thus, a mixt.of 4.25 edible salt, 0.225 Ca3(PO4)2, 0.15 molasses and 0.1 kg trace minerals was blended with an aq. slurry contg. 0.15 Mg3(PO4)2 and 0.125 kg phosphoric acid (75%, 40↿C). The mixt. (moisture content; 0.5-2.5 wt.%) was cast into a pressure-mould and pressed at the pressure of 575 kg/cm2 to give solid salt (internal pressure strength; 135 kg/ cm2).

Description

Manufacturing method of solid salt for feed

The present invention relates to a method for producing a solid salt for feed which is fed to a salt, other minerals and, if necessary, by mixing and solidifying a nutritional agent and a health medicine in a form that the livestock is easy to lick.

Salt is an essential mineral for livestock, and when it is supplied to livestock, it can be added to mixed feed or other feed or mixed salt alone or mixed with other minerals or health care products such as vitamins to provide mixed minerals. . In this case, if the livestock is left in the barn or the ranch so as to be easily ingested, it may not be effectively used because it is washed with saliva, drink, rainwater, etc. of the livestock. In addition, feed salt may be contaminated by the incorporation of foreign substances. Therefore, the method of mixing the salt alone or by adding and mixing the minerals and health medicines required for livestock, etc., and forming a solid to an appropriate size is generally performed.

In this case, the solid salt needs to be adequately dissolved by saliva when the livestock is licking, while it is not solubilized or disintegrated in drinking water or rainwater if left in the barn or pasture for a considerable period (1 to 2 months). It is necessary to have the strength of.

In order to obtain a non-disintegrated solid salt, the salt was solidified in the following manner. For example, the salt powder is dried to anhydrous, and then water is added to adjust its moisture to 0.5 to 1.3%, heated to a temperature of 40 to 70 ° C., and then solidified by pressing at 1350 to 1600 kg / cm 2. The method of making is known (Japanese special service 55-26814). There is also a method of adding calcium phosphate or anhydrous sodium phosphate, a phosphate solution and water to the salt to make a slurry, and then putting the same into a mold to solidify it.

However, after drying the salt powder in advance, the method of molding by adding water is complicated to adjust the added moisture, and also requires high molding pressure during molding. In addition, when the salt powder was slurried by adding an inorganic salt, an inorganic acid and water, placed in a mold, and then left for a long time to solidify, the salt powder was hard to obtain the strength required and a satisfactory result was not obtained. In addition, when the magnesium salt is replenished in the solid salt, the powder of the magnesium salt is generally very bulky, and if mixed as it is, there is a problem that it is difficult to form the solid salt.

In the present invention, it is not necessary to dry the salt powder to adjust the trace moisture in obtaining the solid salt for feed, and it can be molded and solidified at a relatively low pressure even with the addition of magnesium salt, and moreover, the livestock is easy to lick and It provides a solid salt that has a strength that does not disintegrate in drinking water or rainwater even when left in a barn or a ranch.

The inventors have repeatedly studied the method of solidifying by adding magnesium salt to the salt powder, and when the salt powder is mixed with the slurry by adding a phosphate solution to a magnesium compound such as magnesium, magnesium carbonate or magnesium oxide as a solidifying agent, It was found that phosphate containing crystallized water can be press molded at a relatively low molding pressure. A solid salt is obtained that has a compressive strength of 100 kg / cm 2 or more and is easily licked by animals and does not disintegrate in drinking water or rainwater.

The present invention is based on the results as described above. In the method of the present invention, a slurry produced by adding phosphoric acid and water to magnesium compounds such as magnesium phosphate, magnesium carbonate and magnesium oxide is added to the salt as a solidifying accelerator and kneaded. Next, the kneaded material is characterized by pressing.

In the present invention, as a solidifying agent, a slurry obtained by adding phosphoric acid and water to a magnesium compound is used. As said magnesium compound, 1 type, or 2 or more types in magnesium phosphate, magnesium carbonate, and magnesium oxide is used. When the above-mentioned slurry-like solidifying agent is added to the salt powder, kneaded, and put into a mold to mold at a pressure of 450 to 700 kg / cm 2, a solid salt having a compressive strength of 100 kg / cm 2 or more can be obtained. In addition, it is preferable to maintain the temperature at 20-40 degreeC when slurrying and mixing the said magnesium compound.

The main solidification reaction by slurry mixing can be represented by the following reaction formula.

_{3MgCO 3 · Mg (OH) 2} · 3H 2 O + 4H 3 PO 4 + 4H 2 O - 4Mg HPO 4 · 3H 2 O + 3CO 2

MgO + H ₃ PO ₄ + 2H ₂ O-MgHPO ₄ 3H ₂ O

Mg ₃ (PO ₄ ) ₂ + H ₃ PO ₄ + 9H ₂ O-3MgHPO ₄ 3H ₂ O

The proportion of the magnesium compound mixed as the slurry is required to be at least 1.0% by weight for magnesium phosphate, at least 1.0% by weight for magnesium carbonate, and at least 0.5% by weight for magnesium oxide, based on the solid salt. Further, the phosphoric acid content in the above slurry is preferably an amount sufficient to produce such a phosphate of magnesium in the solid salt to be molded, or a slight excess. The amount of water in the addition kneading of the slurry may also be slightly excessive than the amount sufficient to produce the crystal water in the solid salt. However, if the amount of water is too large, it is difficult to mold, so the amount of water at the time of kneading is 2.5% by weight or less, preferably 0.5 to 2.2% by weight based on the molded product. If the amount of water is too small, the angle of the molded article is broken, and the powder floats on the surface and becomes rough.

In the present invention, the magnesium compound is added in the form of a slurry, so that it is easily mixed with salt powder or other additives, and a solid salt having a high strength is obtained under relatively low pressure even by adding and mixing bulky magnesium phosphate, magnesium carbonate, and magnesium oxide. can do. Phosphates of these magnesiums are produced together with the crystallized water between particles of salt and other additives, contributing to the improvement of strength.

Phosphates, carbonates, and oxides of magnesium are bulky as they are, so mixing them with the salt powder becomes difficult to form. However, when this is used as a slurry of the phosphoric acid solution, the effect of promoting solidification is obtained. The present invention utilizes the above-mentioned slurry to use the above-mentioned slurry as a solidification accelerator.

It is also conceivable to use hydrochloric acid and sulfuric acid in place of phosphoric acid added to the slurry, but the use of hydrochloric acid or sulfuric acid produces magnesium chloride or magnesium sulfate, which is undesirable because of their bitter taste and impairs palatability. On the other hand, since phosphorus obtained from phosphoric acid is an essential mineral in livestock, it is also preferable to use phosphoric acid in this respect.

The suitable compounding ratio of the solid salt which concerns on this invention is described in Table 1.

As shown in Table 1, the inventive examples (No. 1 to No. 8) have a product strength of all 121 kg / cm 2 or more, and have good product strength even when the molding pressure is relatively small.

TABLE 1

Note: The phosphate solution is 75% H ₃ PO ₄ . The amount of the additive is an amount of addition of a trace amount of a mineral agent and a vitamin agent.

In the table, x indicates that the product strength was insufficient, and △ indicates that the angle of the product was broken.

On the other hand, in the case of molding, the pressure is too small (No. 9), too much water content (No. 11) and too little water content (No. 14, No. 15) are all small in strength of the product. In addition, the amount of magnesium carbonate compounded (No. 10), the phosphoric acid temperature too low (No. 12) and the magnesium phosphate content too low (No. 13) all have the disadvantage that the edge of the product is disintegrated.

Therefore, in order to implement this invention suitably, it is preferable to make the said component into a predetermined compounding quantity.

According to the method of this invention demonstrated above, content of salt can also be adjusted widely, and various essential inorganic agents, such as calcium, copper, and zinc, can be added arbitrarily. Sodium bicarbonate promotes digestion and neutralizes excess acid in the digestive tract of cattle, thereby promoting the growth of livestock. In addition to the above components, by adding 5 to 10% by weight of a leaf of alfalfa, such as Alfalfa, Tymothy, or a leaf of a leaf such as Falst acasia, Ipilpil, the palatability of the solid salt In addition, it is possible to increase the nutritional value and to improve the turbidity at the time of pressing and molding.

Example 1

To 4.25 kg of salt, 0.225 kg of feed calcium phosphate, 0.15 kg of molasses and 0.1 kg of trace minerals are mixed well in a mixer. A slurry-like liquid in which 0.15 g of magnesium phosphate and 0.125 kg of 75% phosphoric acid is mixed well in advance is added thereto and kneaded well. At this time, the temperature of phosphoric acid is heated to 40 ℃. The mixture is placed in a pressure molding machine and molded at a pressure of 575 kg / cm 2. The pressure resistance after leaving this for 7 days was 135 kg / cm 2, and there was no disintegration at the corners.

Example 2

4.55 kg of salt is mixed well with 0.1 kg of trace minerals in a mixer. 0.16 kg of magnesium carbonate (for feed) and 0.15 kg of 75% phosphoric acid are added thereto, and a slurry liquid is added to knead well. The temperature of the phosphoric acid solution is heated to 40 ° C. The mixture is placed in a pressure molding machine and molded at a pressure of 635 kg / cm 2. The pressure resistance after leaving the molded product for 7 days was 202 kg / cm 2, and there was no disintegration of the corner angle.

Example 3

To 4.55 kg of salt, 0.05 kg of trace minerals and 0.05 g of sodium bicarbonate are mixed well in a mixer. Separately, a slurry of 0.16 kg of magnesium carbonate (for feed) and 0.15 kg of 75% phosphoric acid was added thereto, and kneaded well. The temperature of the phosphoric acid solution is heated to 40 ° C. This is placed in a press molding machine and press molded at a pressure of 635 kg / cm 2. The pressure resistance after leaving the molded product for 7 days was 175 kg / cm 2.

Example 4

To 4.25 kg of salt, 0.25 kg of alfalfa wheat, 0.15 kg of molasses and 0.1 kg of trace minerals are mixed well in a mixer. A slurry solution of 0.125 kg of magnesium carbonate (for feed) and 0.125 kg of 75% phosphoric acid is added thereto and kneaded well. The pressure resistance after leaving the molded product for 7 days was 121 kg / cm 2.

Claims (6)

A slurry produced by adding phosphoric acid and water to magnesium compounds such as magnesium phosphate, magnesium carbonate, and magnesium oxide is added to the salt powder as a solidifying accelerator, kneaded, and the kneaded product is press-molded at a pressure of 450 to 700 kg / cm 2. Method for producing a solid salt for feed characterized in that. The method according to claim 1, wherein the amount of water in the kneaded product is 0.5 to 2.5% by weight when the slurry is added to the salt powder. The method according to claim 1 or 2, wherein one or two or more of magnesium phosphate, magnesium carbonate and magnesium oxide are used as the magnesium compound, and when the mixing ratio in the solid salt is magnesium phosphate, respectively, 1.0 wt% or more, The method is 1.0 wt% or more for magnesium carbonate, and 0.5 wt% or more for magnesium oxide. The method according to claim 1, wherein the salt powder is mixed with trace minerals such as calcium, copper, cobalt, zinc, and iodine required for livestock, health agents such as vitamins, and palatability enhancers such as molasses and flavors. The method according to claim 1, wherein the salt powder is mixed with leaf powders such as alfalfa and timothy or leaf powders such as Ipilfil and Palst acacia. The method of claim 1, wherein the sodium bicarbonate is mixed with the salt powder as an antacid digestive accelerator.