Phosphorus supple menting agent having controlled slow-release type phosphorus, its preparation and use method

A kind of phosphorus supplement, slow-release technology

Inactive Publication Date: 2006-08-30
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biological value of phosphorus sources not only affects the economic benefits of breeding, but also the phosphorus that cannot be absorbed by animals will be excreted with feces, resulting in waste of phosphorus resources and pollution of phosphorus to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Calcining commercially available hydrotalcite at a temperature of 450°C to obtain a bimetallic oxide, then grinding to 400 mesh, adding water and stirring evenly to prepare a suspension slurry with a concentration of 10%;

[0026] 2) Sodium phosphate with a phosphorus content of 6% by weight of the double metal oxide is pre-configured into a 0.1 mol / L sodium phosphate aqueous solution, slowly added to the suspension slurry in step 1) under stirring, and reacted at room temperature for 5 hours;

[0027] 3) centrifugal dehydration of the suspension slurry in step 2);

[0028] 4) The filter cake obtained in step 3) is dried and crushed to 300 mesh to obtain a controlled and slow-release phosphorus supplement. The content of phosphorus in the double metal oxide is 5%.

Embodiment 2

[0030] 1) Calcining commercially available hydrotalcite at a temperature of 550°C to obtain a bimetallic oxide, then grinding to 500 mesh, adding water and stirring evenly to prepare a suspension slurry with a concentration of 1%;

[0031] 2) Potassium phosphate with a phosphorus content of 35% by weight of the double metal oxide is pre-configured into a 1.0 mol / L potassium phosphate aqueous solution, slowly added to the suspension slurry in step 1) under stirring, and reacted at room temperature for 10 hours;

[0032] 3) the suspension slurry in step 2) is filtered and dehydrated;

[0033] 4) Drying and crushing the filter cake obtained in step 3) to a size larger than 300 meshes to obtain a controlled and slow-release phosphorus supplement. The content of phosphorus in the double metal oxide is 30%.

Embodiment 3

[0035] Preparation: hydrotalcite was prepared according to the method of "hydrothermal synthesis of magnesium-aluminum hydrotalcite" (Xie Hui, Jiao Qingze, Duan Xue. Applied Chemistry, 2001, 18: 70-72).

[0036] 1) calcining the hydrotalcite obtained in the preparatory step at a temperature of 500°C to obtain a bimetallic oxide, then grinding to 600 mesh, adding water and stirring evenly to prepare a suspension slurry with a concentration of 5%;

[0037] 2) Sodium hydrogen phosphate with a phosphorus content of 20% by weight of the double metal oxide is pre-configured into a 0.5 mol / L sodium hydrogen phosphate aqueous solution, slowly added to the suspension slurry in step 1) under stirring, and reacted at room temperature for 8 hours;

[0038] 3) centrifugal dehydration of the suspension slurry in step 2);

[0039]4) Drying and crushing the filter cake obtained in step 3) to a size larger than 300 meshes to obtain a controlled and slow-release phosphorus supplement. The cont...

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PUM

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Abstract

A P-complementing forage additive containing the controlled slow releasing P is an active P contained bimetal oxide prepared from phosphate or hydrogen phosphate through calcining hydrotalcite to obtain bimetal oxide, adsorption, ionic exchange reaction, filtering, drying and pulverizing.

Description

technical field [0001] The invention relates to a phosphorus replenishing agent of controlled and slow-release phosphorus, a preparation method and application. Background technique [0002] Phosphorus is one of the most abundant mineral elements in animals, its requirement is second only to calcium, and plays an important role in the growth and development of animals. Among them, phosphorus accounting for 85-88% of total phosphorus exists in bones and teeth, and maintains the normal hardness of bones and teeth together with calcium. Moreover, phosphorus is also used as a component of high-energy phosphate bonds and phosphocreatine to participate in the energy metabolism of the body. Phosphorus participates in the absorption of lipids and fat-soluble vitamins and the formation of cell membranes in the form of phospholipids, and is used as a component of genetic material and some enzymes. Components involved in many important life processes of the body. The lack or deficien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/16A23K20/26
Inventor 夏枚生胡彩虹潘金敏
Owner ZHEJIANG UNIV
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