CN1408351A - Slow-release urea and its preparing method - Google Patents
Slow-release urea and its preparing method Download PDFInfo
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- CN1408351A CN1408351A CN01141801A CN01141801A CN1408351A CN 1408351 A CN1408351 A CN 1408351A CN 01141801 A CN01141801 A CN 01141801A CN 01141801 A CN01141801 A CN 01141801A CN 1408351 A CN1408351 A CN 1408351A
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Abstract
The slow-release urea product is low in cost and safe to ruminant. It is a kind of three-layered product including inner layer of urea, middle layer of animal blood, formaldehyde and bentonite, and outer layer of zeolite. It is prepared through the steps of: heating fresh animal blood to 40-50 deg.c; heating formaldehyde and bentonite while stirring to prepare the middle coating layer; coating urea with the middle coating agent; and coating with the zeolite the coated urea.
Description
Technical field
The present invention relates to a kind of slow-release carbamide and preparation method thereof.
Background technology
Along with the fast development of aquaculture, the phenomenon of protein resource shortage is more and more serious, and China present every year need be from nearly ten million ton of external import bean cake, cottonseed meal, meat meal tankage, Petiolus Trachycarpi dregs.Carbamide is that a kind of source is wide, organic nitrogen source easy to use.Owing to have urease in the cud of ruminant, urea decomposition can be caused animal to poison, therefore have only carbamide is made the spacetabs type product, could be by the animal safe utilization.Several slow-release carbamides in the market, for example biuret, urea phosphate and IBDU etc., ubiquity the production cost height, but the addition in feedstuff is low, is difficult to shortcomings such as popularization, the production cost of biuret is per ton more than 3600 yuan, every day, every cow head can only add about 100 grams, and urea phosphate cost per ton is more than 5000 yuan, and addition only is 2% of a feedstuff, about 4000 yuan per ton of the production cost of IBDU, and addition only is below 1.5% of feedstuff.
Summary of the invention
It is low to the purpose of this invention is to provide a kind of production cost, to the slow-release carbamide of ruminant safety.
A kind of slow-release carbamide, by interior, in, outer three layers of granular product of forming, wherein internal layer is to account for the carbamide of gross weight umber than 70-75; The middle level comprises bright animal blood, formaldehyde and bentonite, and the portion rate that they account for gross weight is respectively 30-40,1-3 and 1-2; Skin is to account for the zeolite powder of gross weight umber than 15-25.
Particulate size is between the 20-40 order.
In order to make the better effects if in middle level, also comprise in the described middle level accounting for the osseocolla of gross weight umber than 3-5.
When described carbamide was selected 60-80 purpose granule for use, effect was better.
Another object of the present invention provides a kind of method of producing above-mentioned slow-release carbamide.
A kind of preparation method of slow-release carbamide comprises the following steps:
1) the bright animal blood that will account for total raw material ratio of weight and number 100-120 is heated to 40-50 ℃;
2) add formaldehyde and the bentonite that accounts for total raw material ratio of weight and number 1-3 and 1-2 respectively, stirred 15-25 minute, make the middle level coating materials;
3) will account for the carbamide coating of total raw material ratio of weight and number 70-75 with above-mentioned middle level coating materials;
4) use the zeolite powder that accounts for total raw material ratio of weight and number 15-25 to wrap up the carbamide of above-mentioned coating.
With drying behind the zeolite powder parcel.Drying is carried out in the helical stir drying machine.
Described bright animal blood was handled with anticoagulant, with filtering before.
Parcel middle level coating materials can be used coating machine, oils and fats flush coater or blender on carbamide.
With blender parcel zeolite powder skin.
The present invention is designed to three-decker with slow-release carbamide dexterously, and coating keeps intactly in the cud of ruminant, and carbamide can not discharge, the probability of having avoided animal to poison.Outer coating zeolite powder plays the agglomeration resistance effect on the one hand, can also adsorb excess of ammonia on the other hand, prevents that animal poisons.When animal gastric ammonia concentration is low, can also discharge, for animal use.Coating materials makes product of the present invention nonhygroscopic, does not decompose.Formaldehyde in the middle level can be guaranteed not moldy metamorphism of product.
Technology of the present invention is simple, and production cost is low, and product cost per ton is about 1300 yuan, and the addition in feedstuff can save protein feeds 40-60% up to 10-12%, takes for a long time to have no side effect.
In order to study the influence of slow-release carbamide of the present invention to output, the milch cow identical with the age experimentizes, the basic feedstuff of experimental group and matched group milch cow is identical, add 12% carbamide of the present invention in the feedstuff of experimental group, after feeding 10 days, the average milk yield of the milch cow of experimental group increases gradually, is stabilized in experimental group every day at last than the voluminous milk of matched group 2-3 kilogram.The present invention will be further described below in conjunction with specific embodiment.
The specific embodiment
Embodiment 1, production slow-release carbamide
Produce slow-release carbamide, specifically comprise the following steps:
1, carbamide is ground into 60-80 purpose fine particle;
2, gather bright animal blood, handle, prevent to condense with the anticoagulant sodium citrate;
3, get the bright animal blood that accounts for total raw material ratio of weight and number 110, filter, be heated to 45 ℃;
4, add solid metaformaldehyde, bentonite and the osseocolla that accounts for total raw material ratio of weight and number 2,1.5 and 4 respectively, stirred 20 minutes, make the middle level coating materials;
5, will account for total raw material ratio of weight and number 73 with above-mentioned coating materials, the carbamide through pulverizing carries out coating in the coating machine;
6, in blender, wrap up the carbamide of above-mentioned coating with the zeolite powder that accounts for total raw material ratio of weight and number 20;
7, dry with the helical stir drying machine, obtain product.
The product that obtains is a 20-40 purpose granule.By interior, in, outer three layers form, wherein internal layer is to account for the gross weight umber than 73 carbamide; The middle level comprises bright animal blood, formaldehyde, bentonite and osseocolla, and the portion rate that they account for gross weight is respectively 35,2,1.5 and 4; Skin is to account for the gross weight umber than 20 zeolite powder.
In the above-described embodiments, can also on carbamide, wrap up the middle level coating materials with oils and fats flush coater or blender.
In actual production, can be according to economic condition and needs decision whether interpolation osseocolla; The addition of other various components can be adjusted in proper range as required.
Claims (10)
1, a kind of slow-release carbamide, by interior, in, outer three layers of granular product of forming, wherein internal layer is to account for the carbamide of gross weight umber than 70-75; The middle level comprises bright animal blood, formaldehyde and bentonite, and the portion rate that they account for gross weight is respectively 30-40,1-3 and 1-2; Skin is to account for the zeolite powder of gross weight umber than 15-25.
2, a kind of slow-release carbamide according to claim 1 is characterized in that: also comprise in the described middle level accounting for the osseocolla of gross weight umber than 3-5.
3, a kind of slow-release carbamide according to claim 1 and 2 is characterized in that: described carbamide is 60-80 purpose granule.
4, a kind of preparation method of slow-release carbamide comprises the following steps:
1) the bright animal blood that will account for total raw material ratio of weight and number 100-120 is heated to 40-50 ℃;
2) add formaldehyde and the bentonite that accounts for total raw material ratio of weight and number 1-3 and 1-2 respectively, stirred 15-25 minute, make the middle level coating materials;
3) will account for the carbamide coating of total raw material ratio of weight and number 70-75 with above-mentioned middle level coating materials;
4) use the zeolite powder that accounts for total raw material ratio of weight and number 15-25 to wrap up the carbamide of above-mentioned coating.
5, preparation method according to claim 4 is characterized in that: described carbamide is ground into the 60-80 order before coating.
6, preparation method according to claim 4 is characterized in that: with drying behind the zeolite powder parcel.
7, according to claim 4 or 5 or 6 described preparation methoies, it is characterized in that: add to be heated to stir in the animal blood and also comprise in the composition of making the middle level coating materials and account for the osseocolla of gross weight umber than 3-5.
8, preparation method according to claim 4 is characterized in that: described bright animal blood was handled with anticoagulant, with filtering before.
9, preparation method according to claim 4 is characterized in that: wrap up the middle level coating materials with coating machine, oils and fats flush coater or blender on carbamide; With blender parcel zeolite powder skin.
10, preparation method according to claim 6 is characterized in that: described drying is carried out in the helical stir drying machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01141801A CN1408351A (en) | 2001-09-18 | 2001-09-18 | Slow-release urea and its preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01141801A CN1408351A (en) | 2001-09-18 | 2001-09-18 | Slow-release urea and its preparing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1408351A true CN1408351A (en) | 2003-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01141801A Pending CN1408351A (en) | 2001-09-18 | 2001-09-18 | Slow-release urea and its preparing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104758273A (en) * | 2015-04-09 | 2015-07-08 | 山东罗欣药业集团股份有限公司 | Urea micro-capsule preparation and preparation method thereof |
| CN107212161A (en) * | 2017-06-14 | 2017-09-29 | 合肥安生医药科技有限公司 | A kind of sustained release of film coating type ruminates non protein nitrogen of raising and preparation method thereof |
| CN107594144A (en) * | 2017-09-20 | 2018-01-19 | 潘正茂 | Ruminant feed sustained/controlled release urea and preparation method thereof and ruminant mixed feed |
-
2001
- 2001-09-18 CN CN01141801A patent/CN1408351A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104758273A (en) * | 2015-04-09 | 2015-07-08 | 山东罗欣药业集团股份有限公司 | Urea micro-capsule preparation and preparation method thereof |
| CN104758273B (en) * | 2015-04-09 | 2018-04-20 | 山东罗欣药业集团股份有限公司 | A kind of urea microcapsule formulation and preparation method thereof |
| CN107212161A (en) * | 2017-06-14 | 2017-09-29 | 合肥安生医药科技有限公司 | A kind of sustained release of film coating type ruminates non protein nitrogen of raising and preparation method thereof |
| CN107594144A (en) * | 2017-09-20 | 2018-01-19 | 潘正茂 | Ruminant feed sustained/controlled release urea and preparation method thereof and ruminant mixed feed |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |