HU201234B - Method for producing common salt mixture free from nodulizing expedient expediently for fodders - Google Patents

Abstract

Free running, especially for fodder, salt mixts. - contain a homogeneous mixt. of salt, hydrophobic and hydrophilic perlites in 5:1-20:1 pref 5:1-25:1 wt. proportion. Max particle size of perlites is 0.3mm and 0.2-3 pref. 0.5-3 wt.% of hydrophilic and 0.1-1.0 wt.% of hydrophobic perlite are added to salt of max/mm grain size. Stored in bins or sacks, the compsn. retains its free running qualities indefinitely.

Description

{& £ .- / ·. clyar csoajósadalaiía.ít'i.

for the preparation of a salt mixture for feed, which is composed of salt salt and additives which bind its hygroscopic moisture. 5

The hygroscopicity of inorganic salts, such as table salt, adversely affects their physical properties. Their use, on a technical scale, has the difficulty of being stuck together in blocks that are difficult to handle and parable, making it difficult to mix them with other feed components.

There are several methods for eliminating the harmful properties of common salt due to moisture. Most often, various additives 15 are used to solve the problem. The additives used bind the water content of the salt, which causes the hygroscopicity of the salt, to improve the physical properties of the salts. Mostly, natural or artificial inorganic compounds are used for this purpose.

153.859. X-ray amorphous silica with a particle size of less than 500 μΐη is used as a water-binding additive. This adsorbs the water content on its surface, thus providing the desired effect. The additive is produced by flame hydrolysis of silicon tetrachloride. Due to the costly synthesis, the method for the treatment of bulk inorganic salts is uneconomical and has not been technically applied at the forefront. 30

No. 187,725. Hungarian Patent Application No. 5,193,115 discloses a process wherein zeolite, activated at 50-300 ° C, is used to prevent the adherence of the feed salt.

It is added in an amount of 5 to 50% by weight and ground together with the salt. However, the relatively high additive ratio required to achieve this goal may result in undesirable side effects in the use of the formulation and therefore its potential use is limited.

It is an object of the present invention to provide, by simple means, the use of readily available additives, and economically, to fix the moisture content of the common salt, thereby providing the desired and advantageous physical properties.

Surprisingly, our work 45 has shown that addition of hydrophilic and hydrophobic perlite to the common salt in a defined ratio gives a common salt mixture which is a free-flowing product which is easy to handle and miscible with other materials. It retains this property even when stored in a high relative humidity of 50.

When the common salt was mixed with hydrophilic swollen perlite only, the additive bound the hygroscopic moisture content of the salt and thus prevented its bulking, but did not sufficiently ensure its free-flowing property.

On the other hand, if only hydrophobic perlite was used as an additive on its own, the said benefits did not appear, due to its moisture content, the salt formed into blocks during storage. 60

Thus, it has been recognized that the addition of hydrophilic and hydrophobic perlite to the common salt results in a more advantageous and economical elimination of the adverse physical properties caused by moisture compared to prior art processes.

Both hydrophilic and hydrophobic perlite would be readily available commercially. For purposes of this invention, a quality of less than 0.3 mm is preferably used. The hydrophilic perlite is present in an amount of from 0.1 to 4.0% by weight of the total composition and from 0.05 to 1.0% by weight of the hydrophilic perlite. The ratio of hydrophilic to hydrophobic perl is from 5 to 30: 1, preferably from 5 to 25: 1.

The grain size of the salt depends on the intended use. According to our solution, salt with a particle size of 0.5-1 mm or with a particle size of less than 0 (less than 2 mm) can be successfully treated.

The mixing of the components can be carried out by any technical means. Either powder mixers, grinders or worm conveyors can be used for this purpose.

The order of addition is arbitrary, but it is technically advantageous to co-administer the components. The additives may be added to the salt in portions or in portions.

The product can be stored either in bulk or packed in small portions. It retains its free-flowing properties even when not exposed to atmospheric moisture.

Further use, mixing with other feed components and homogenization of the compound feed according to the present invention can be accomplished simply and efficiently. The use of perlite does not affect the utilization properties of the forage.

In support of the present invention, the following experiment is presented.

Grind in laboratory ball mill for 5 minutes. we mixed the following materials:

(a) 100 grams of table salt,

(b) 100 grams of common salt and 1 gram of hydrophilic perl,

c) the mixture of b) and 0.2 grams of hydrophobic peru,

(d) 100 grams of common salt and 0.2 grams of hydrophobic perl.

The four products were stored in open containers at 95-100% RH for 30 days. Subsequently, the products were poured into a glass funnel with a diameter of 100 mm, a cone of 60 °, and a aperture of 5 mm at the apex, and observed for effluent properties. The results of the observations were as follows:

(a) has not flowed out of the funnel,

(b) has been effected by gentle movement within 20 seconds,

(c) self-sustained within 10 seconds,

(d) did not flow out of the funnel;

The invention is illustrated by the following examples, but is not limited to the examples.

Example 1

On a Koller pass, 96.8 kg of common salt, 3.0 kg of hydrophilic perlite and 0.2 kg of hydrophobic perlite were homogenized and aged for 15 minutes. The salt content is max. 1 mm particle size. The hydrophilic and hydrophobic perlite max. 0.3 mm particle size. The product is advantageously used in cattle, pigs, poultry, etc. for the preparation of feed. Whether stored in a container or in a bag, its free-flowing property is preserved for an unlimited period of time.

Example 2

In a hammer grinder, continuous addition of table salt with a grain size of up to 1 mm and hydrophilic and hydrophobic perlite with a grain size of up to 5 mm;

To 1000 kg of common salt add 5 kg of hydrophilic and 1 kg of hydrophobic perlite. The product can be stored without risk of compaction and easily mixed with other feed components. 10

Example 3

In the same manner as in Example 1, 97.4 kg of common salt with a particle size of 1 mm max, 23 kg of hydrophilic particles with a maximum particle size of 0.3 mm and 0.1 kg of hydrophobic perlite were mixed and ground.

The product has similar properties and applications as Example 1.

Claims (1)

A process for the preparation of a non-leaching salt mixture, preferably for feed, characterized in that the salt is in the range 0.1 to 4 mm by weight and 0.1 to 4.0% by weight based on the total weight of the composition. Hydrophilic perlite having a particle size of 05-03 mm and hydrophobic perlite having a particle size of 0.05 to 1% by weight are mixed.