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Preparation method of feed-grade zinc oxide premixing agent

A technology of zinc oxide and premix, which is applied in the forming or processing of animal feed, animal feed, additional food elements, etc., can solve the problems of low biological potency, high addition amount, uneven dispersion, etc., and achieve high biological potency , high absorption rate, uniform dispersion effect

Inactive Publication Date: 2017-08-22
ZHEJIANG ESIGMA BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention solves the problems of uneven dispersion, easy agglomeration, high addition amount and low biological potency existing in existing zinc oxide additives, and provides a preparation method of feed grade zinc oxide premix. The prepared zinc oxide premix The zinc oxide particles in the mixture are dispersed at the nanometer level, uniformly dispersed, not easy to agglomerate, and have good biological potency and utilization rate, and will not cause side effects on animal growth

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Grind 20g of zinc oxide powder, pass through an 80 mesh sieve, add it into a 200g 15% ethanol aqueous solution, stir and disperse evenly at 1000r / min, add 60g of silane coupling agent solution dropwise to the reaction solution After the dropwise addition is completed within 20 minutes, continue to stir for 40 minutes, take the suspension and set it aside; the silane coupling agent solution is composed of water, ethanol and KH550 with a mass ratio of 5:75:20;

[0028] (2) Add 60 g of 15 wt % tocopherol-ethanol solution to the 100 g suspension obtained in step (1) at normal temperature, after the dropwise addition is completed within 20 minutes, the temperature is raised to 65° C., and after the insulation reaction for 2.5 hours, the suspension is taken, filtered, The filter cake was washed 5 times with ethanol, then vacuum-dried at 65°C, ground, and passed through an 80-mesh sieve to obtain 7.8 g of nano-zinc oxide;

[0029] (3) Mix 10g nano-zinc oxide, 60g starch, 3...

Embodiment 2

[0033] (1) Grind 20g of zinc oxide powder, pass through a 80 mesh sieve, add it into 250g of 10% ethanol aqueous solution, stir and disperse evenly at 1200r / min, add dropwise 20g of silane coupling agent solution to the reaction solution After the dropwise addition is completed within 15 minutes, continue to stir for 60 minutes, take the suspension and set it aside; the silane coupling agent solution is composed of water, ethanol and KH570 with a mass ratio of 10:70:20;

[0034] (2) Add 50g of 18wt% tocopherol-ethanol solution to the 100g suspension obtained in step (1) at normal temperature, after the dropwise addition is completed within 15 minutes, the temperature is raised to 70°C, and after the insulation reaction for 2 hours, the suspension is taken, filtered, The filter cake was washed 3 times with ethanol, then vacuum-dried at 65°C, ground, and passed through an 80-mesh sieve to obtain 8.2 g of nano-zinc oxide;

[0035] (3) Mix 20g nano-zinc oxide, 70g starch, 4g sodiu...

Embodiment 3

[0039] (1) Grind 20g of zinc oxide powder, pass through a 80-mesh sieve, add it into a 300g 25% ethanol aqueous solution, stir and disperse evenly at 1500r / min, add 100g of silane coupling agent solution dropwise to the reaction solution After the dropwise addition is completed within 18 minutes, continue to stir for 30 minutes, take the suspension and set it aside; the silane coupling agent solution is composed of water, ethanol and KH560 with a mass ratio of 8:72:20;

[0040] (2) Add 80g of 20wt% tocopherol-ethanol solution to the 100g suspension obtained in step (1) at normal temperature. After the dropwise addition is completed within 18 minutes, the temperature is raised to 60°C. After 3 hours of insulation reaction, the suspension is taken and filtered. The filter cake was washed 4 times with ethanol, then vacuum-dried at 65° C., ground, and passed through an 80-mesh sieve to obtain 7.2 g of nano-zinc oxide;

[0041](3) Mix 5g nano-zinc oxide, 50g starch, 5g sodium hydro...

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Abstract

The invention provides a preparation method of a feed-grade zinc oxide premixing agent. The preparation method comprises the following steps of (1) grinding zinc oxide powder, performing screening with an 80-mesh sieve to obtain fine powder, adding the fine powder into an ethanol water solution, dropwise adding a silane coupling agent solution, and taking suspension liquid for standby application; (2) adding a delta-tocopherol-ethanol solution to the suspension liquid under the normal atmospheric temperature, performing heating to 60-70 DEG C, performing a reaction for 2-3 hours, taking suspension liquid, performing filtering, washing filter cakes with ethanol, performing drying, performing grinding, and performing screening so as to obtain nanometer zinc oxide; (3) mixing the nanometer zinc oxide with starch, sodium hydroxypropycellulose, sodium cyclamate, a binder and a wetting agent through a mixing machine, performing granulation, performing shot blasting, and performing drying to obtain mini pills; and (4) performing screening on the mini pills with a classifying sieve so as to obtain the feed-grade zinc oxide premixing agent of which the particle size is 20-80 meshes. The zinc oxide particles in the made zinc oxide premixing agent are dispersed in a nanometer grade, so that the feed-grade zinc oxide premixing agent is uniform to disperse and not liable to agglomerate, has favorable biological value and utilization, and cannot generate side effects on growth of animals.

Description

technical field [0001] The invention belongs to the technical field of feed additives, and in particular relates to a preparation method of a feed grade zinc oxide premix. Background technique [0002] Zinc is a nutritional feed additive. Essential for hair growth, skin health and tissue repair. Commonly used zinc supplement feed additives mainly include zinc oxide, zinc sulfate and zinc methionine. Compared with other zinc supplement additives, zinc oxide has the advantages of high zinc content, low cost and good stability, and is a good zinc source for high zinc feed. In order to distribute zinc and other feed additives evenly in the feed, the premixed feed is usually produced by mixing first. The disadvantage of this method is that it is affected by the dispersion and particle density difference between the additive and the carrier components. Very uniform mixing is often not achieved. [0003] Due to the low utilization rate of inorganic zinc (zinc sulfate, ordinary ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K20/20A23K40/10A23K20/10
Inventor 聂月美王贤玉张丽佳左纯子陈贵才
Owner ZHEJIANG ESIGMA BIOTECH CO LTD
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