SU835406A1 - Nitrogen-phosphorus food addition and method of obtaining same - Google Patents

Description

This invention relates to nitrogen-phosphorus feed additives for ruminants and a method for their preparation.

Methods are known for producing nitrogen-phosphorus additives by mixing urea with ammonium phosphates at a temperature not higher than 127 ° C and a N: P ratio in the product from 3: 1 to 10: 1. one . However, these methods of obtaining feed additives do not eliminate the risk of animal intoxication due to an overdose of urea.

The aim of the invention is to obtain a feed additive, less toxic than the known ones, which would contain nitrogen and phosphorus in balanced amounts.

The goal is achieved by the fact that the nitrogen-phosphorus additive contains and the carbamide and ammonium phosphates according to the invention additionally contains biuret and dianuric acid with the following ratio of components, weight. %:

Carbam.id25,0-45,0

Ammonium phosphates 27.0-40.0

Biuret20.0-37.0

Cyanuric acid 3.0-9.0

The method of obtaining the proposed nitrogen-phosphorus additive involves mixing urea with ammonium phosphates, which is carried out by fusing them at 150-180 ° C.

within 0.25-5.0 hours

As a result, carbamide is converted into biuret and cyanuric acid, and ammonium polyphosphates are formed. These transformations provide an additive that reduces the possibility of intoxication of lsivotnyh during its overdose, since the rate of hydrolysis of this additive in the rumen of ruminants is significantly lower than the rate of hydrolysis of urea. The feed additive contains nitrogen and phosphorus in balanced amounts (the NrPjOg ratio is between 1: 1 and 2: 1). The additive can be obtained in granular form, it is not hygroscopic, does not cake during storage.

Example 1. When heated in a thin layer of a mixture containing 78.8 wt.% Urea and 21.2 wt.% Ammonium phosphate, with

160 ° C for 20 min get the product composition, wt.%: Urea 37,0; biuret 32.0; cyanuric acid 3,5; ammonium phosphates 27.5. The content of nutrients in the finished product (N-I-P2O5) is 55.5 wt.%; the ratio of N: P205 is 1.76: 1.0.

Example 2. When heated in a thin layer of a mixture containing 78.8 wt.% Urea and 21.2 wt.% Ammonium phosphate, at 170 ° C for 20 min get the product composition,

wt.%: carbamide 26.0; biuret 36.5; cyanuric acid 6.5; ammonium phosphates 31.0. The nutrient content in the finished product (N + PjOs) is 56.0 wt.%, The ratio of N: P2O5 is 1.49: 1.0.

Example 3. When heated in a thin layer of a mixture containing 70.4% by weight of urea and 29.6% by weight of ammonium phosphate, at 170 ° C for 20 minutes, the product of the composition is obtained,% by weight: urea 26.5; biuret 29.5; cyanuric acid 4.0; ammonium phosphate 40.0. The content of nutrients in the finished product (N + P205) is 60.5 wt.%, The ratio N: P2O5 is 1.1: 1.0.

Example 4. When heated in a thin layer of a mixture containing 78.8% by weight of urea and 21.2% by weight of ammonium phosphate, at 150 ° C for 80 minutes, the product of the composition is obtained,% by weight: urea 39.0; biuret 28.5; cyanuric acid 2.5; ammonium phosphates 30.0. The content of nutrients in the final product (N + P2O5) is 56.8 wt.%, The ratio N: P2O5 is 1.59: 1.0.

Example 5. By heating a mixture containing 75.3% by weight of urea and 24.7% by weight of ammonium phosphate at 180 ° C with blowing through the entire volume of molten nitrogen at the rate of 5 l / kg of the initial mixture for 60 min, the product is obtained , wt.%: carbamide 39; biuret 28.5; cyanuric acid 6.0; ammonium phosphates 29.7. The nutrient content (N + P205) is 55.6, the ratio N: P2O5 is 1.64: 1.0.

Example 6. A mixture of the composition shown in example 5 is treated as in this example at 170 ° C for 100 minutes to obtain a product of the composition, wt.%: Urea 36.1; biuret 28.5; cyanuric acid 6.1; ammonium phosphates 29.3. The content of nutrients (N + P2O5) is 55.4% by weight, the ratio N: P2O5 is 1.66: 1.0.

Example 7. A mixture of the composition shown in example 5 is treated as in this example at 160 ° C for 240 minutes to obtain the product of the composition, wt.%: Urea 30.4; biuret 32.2; cyanuric acid 8.1; ammonium polyphosphates 29.3. The nutrient content (N + P2Os) is 54.9% by weight, the ratio N: P2O5 is 1.64: 1.0.

Example 8. A mixture of the composition described in example 5 was treated similarly to this example at 150 ° C for 300 minutes to obtain the product of the composition, wt.%: Urea 32.5; biuret 34.4; cyanuric acid 4,2; ammonium phosphates 28.9. The nutrient content (N + PgOg) is 55.1 wt.%, The ratio N: P2Og is 1.69: 1.0.

The test results of the proposed supplements indicate a better use of non-protein nitrogen in the body of animals when fed and less toxic compared to urea and known additives.

Claims (2)

1. Nitrogen-phosphorus feed additive containing urea and ammonium phosphates, characterized in that, in order to reduce toxicity, the additive further comprises biuret and cyanuric acid at the following ratio of components, wt.%: Urea 25.0-45.0 Ammonium phosphates 27.0-40.0 Biuret20.0-37.0 Cyanuric acid 3.0-9.0 2. A method for producing a nitrogen-phosphorus additive according to claim 1, comprising mixing urea with ammonium phosphates, characterized in that the urea is fused with ammonium phosphates at 150-180 ° C for 0.25-5.0 hours. Sources of information taken into account in the examination 1. US Patent No. 3551162, cl. 99-2, 1964.