CN102318750A - Coated submicron feed-grade zinc oxide and preparation method thereof - Google Patents
Coated submicron feed-grade zinc oxide and preparation method thereof Download PDFInfo
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- CN102318750A CN102318750A CN201110296150A CN201110296150A CN102318750A CN 102318750 A CN102318750 A CN 102318750A CN 201110296150 A CN201110296150 A CN 201110296150A CN 201110296150 A CN201110296150 A CN 201110296150A CN 102318750 A CN102318750 A CN 102318750A
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- zinc oxide
- feed grade
- preparation
- submicron order
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 title claims abstract description 202
- 239000011787 zinc oxide Substances 0.000 title claims abstract description 100
- 238000002360 preparation method Methods 0.000 title claims abstract description 56
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 70
- 239000002131 composite material Substances 0.000 claims abstract description 68
- 235000019325 ethyl cellulose Nutrition 0.000 claims abstract description 20
- 229920001249 ethyl cellulose Polymers 0.000 claims abstract description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000001856 Ethyl cellulose Substances 0.000 claims abstract description 14
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000000047 product Substances 0.000 claims description 52
- 238000003756 stirring Methods 0.000 claims description 36
- 239000000084 colloidal system Substances 0.000 claims description 31
- 239000000203 mixture Substances 0.000 claims description 25
- 238000012545 processing Methods 0.000 claims description 25
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- 239000002245 particle Substances 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 14
- 230000003647 oxidation Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 235000019441 ethanol Nutrition 0.000 claims description 6
- 125000005909 ethyl alcohol group Chemical group 0.000 claims description 6
- 239000012467 final product Substances 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 241001465754 Metazoa Species 0.000 abstract description 10
- 230000002496 gastric effect Effects 0.000 abstract description 4
- 230000000968 intestinal effect Effects 0.000 abstract description 4
- 239000003674 animal food additive Substances 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 210000001035 gastrointestinal tract Anatomy 0.000 abstract 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 abstract 2
- 230000007850 degeneration Effects 0.000 abstract 1
- 235000019359 magnesium stearate Nutrition 0.000 abstract 1
- 229920001592 potato starch Polymers 0.000 abstract 1
- 239000000306 component Substances 0.000 description 12
- 238000012360 testing method Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 9
- 206010012735 Diarrhoea Diseases 0.000 description 8
- 239000011701 zinc Substances 0.000 description 8
- 229910052725 zinc Inorganic materials 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 210000000813 small intestine Anatomy 0.000 description 6
- 239000002689 soil Substances 0.000 description 6
- 206010013786 Dry skin Diseases 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 210000002784 stomach Anatomy 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 230000037406 food intake Effects 0.000 description 3
- 210000004051 gastric juice Anatomy 0.000 description 3
- 235000015097 nutrients Nutrition 0.000 description 3
- 235000016709 nutrition Nutrition 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 description 2
- 239000004472 Lysine Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000004925 denaturation Methods 0.000 description 2
- 230000036425 denaturation Effects 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000035764 nutrition Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 241000282887 Suidae Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 235000019728 animal nutrition Nutrition 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000004913 chyme Anatomy 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000013270 controlled release Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 235000019621 digestibility Nutrition 0.000 description 1
- 230000001079 digestive effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 230000003053 immunization Effects 0.000 description 1
- 238000002649 immunization Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000002366 mineral element Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 235000002949 phytic acid Nutrition 0.000 description 1
- 229940068041 phytic acid Drugs 0.000 description 1
- 239000000467 phytic acid Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 150000003722 vitamin derivatives Chemical class 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
Landscapes
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicinal Preparation (AREA)
Abstract
The invention provides coated submicron feed-grade zinc oxide and a preparation method thereof, and belongs to the field of feed additives. The invention aims at solving the problems in the prior art that zinc oxide can influence the biological potency of active components in feed, and coating wall materials can not degrade timely in intestinal environment; through shielding treatment for three times, a product is prepared by the following components by weight: 90-120 parts of submicron feed-grade zinc oxide, 28-35 parts of composite shielding agents; the composite shielding agent comprises the following components by weight: 80-90 parts of potato starch, 4-6 parts of ethyl cellulose, 3-4 parts of anhydrous alcohol, 0.5-0.8 parts of magnesium stearate. A feed-grade zinc oxide product and a corresponding preparation method thereof are provided, wherein the product combines appropriate control of the degeneration degree of the shielding agent, can deshield and release in animal digestive tract, gastric and intestinal environment, and is effectively used by microbe in posterior digestive tracts.
Description
Technical field
The present invention relates to a kind of feed addictive and preparation method thereof, more particularly the present invention relates to a kind of submicron order feed grade zinc oxide and preparation method thereof that encapsulates, belong to feed additive field.
Background technology
The trace zinc element is the important component part of animal nutrient, also is the core component that feed pre-mixing material is produced.The zinc oxide that generally uses has strong enzymatic oxidation effect; Have a strong impact on feed compound premix, mixed feed shelf-life and and nutritional quality; Especially severe reduces the nutrition validity of vitamin and fats nutriment, is the very worried hard nut to crack of feed industry and breeding production always.
The physiological research of Animal nutrition proves that also high zinc (feed grade zinc oxide) is under nonruminant alimentary canal hydrochloric acid in gastric juice condition, and the degree of dissociation is very high, generally all more than 90%.Under organic acid (weak acid) condition, the degree of dissociation is also more than 50%.The zinc of ionic state be prone to chyme (nutrient source) in materials such as oxalic acid, phytic acid, phosphate radical combines formation to stablize and can not be again by the material of digestibility and utilization; Even generate poorly soluble zinc salt with fatty acid response, significantly reduce the efficient of digesting and assimilating of zinc and some other nutriment.Under alimentary canal small intestine alkali condition, also can reduce alkaline free amino acid because of the acid effect of gastric environment, lysine, arginic absorption efficiency reduces the effect that feed adds free lysine.Using under the high oxidation zink rod spare, because of its colloid property, can influence the effect of stomach, small intestine digestive ferment, increase the deficiency extent of other mineral element calcium, iron, selenium etc., influence digesting and assimilating and utilizing of whole nutriment.
Obviously, all can prolong technology and the method that contains the zinc oxide feed shelf-life and can reduce the gastric environment chemical action, all help promoting feed nutrition efficient, promote nutrient balance and utilization.
It is 201010148547.8 that State Intellectual Property Office discloses an application number on August 18th, 2010; Name is called the patent of invention of " a kind of enteric zinc oxide and preparation method thereof ", and this patent provides the preparation method of animal feed level additive microencapsulated coating zinc oxide.It consists of: starch 5～20%, sodium carboxymethylcellulose 5～10%, Zinc oxide powder 50～80%, stearic acid 5～15%, resin 3#3～5%.This method is carried out microencapsulation to the feed grade Zinc oxide powder and is encapsulated processing; Avoid the destruction of hydrochloric acid in gastric juice to zinc oxide; Realize the long-acting slow-release of zinc oxide in the animal body enteron aisle; Improve the bioavailability of animal, reduce zinc oxide dosage and use cost, reduce ight soil zinc and drain and environmental pollution zinc oxide.
More than materials such as acrylic resin and resin 3# have been adopted in the invention; Because these two kinds of materials have the ability of higher antiacid, caustic corrosion, can avoid zinc oxide acidolysis loss under one's belt after using this material, but in small intestine, can not dissociate timely and effectively to discharge coated zinc oxide; The zinc oxide that is encapsulated has considerable part to be discharged with ight soil; Do not have due effect, thereby can not realize the target that this invention " realizes the long-acting slow-release of zinc oxide in the animal body enteron aisle, improves the bioavailability of animal to zinc oxide; reduce zinc oxide dosage and use cost, reduce ight soil zinc and drain and environmental pollution " fully.
Summary of the invention
The present invention is intended to solve the biological value that prior art zinc oxide in the background technology influences the active component in the feed; And encapsulate the problem that the wall material can not in time be degraded under intestinal environment; A kind of denaturation degrees that combines suitable control screener is provided; Can obtain to separate shielding by physiological requirements and discharge at animal alimentary canal stomach, small intestine environment, can be at the back segment alimentary canal by effective feed grade zinc oxide product and the corresponding preparation method of utilizing thereof of microorganism.
In order to realize the foregoing invention purpose, its concrete technical scheme is following:
A kind of submicron order feed grade zinc oxide that encapsulates is characterized in that: the component that comprises following parts by weight meter is formed:
90～120 parts in submicron order feed grade zinc oxide
28～35 parts of composite shielding agent;
Described composite shielding agent comprises the component composition of following parts by weight meter:
80～90 parts of farinas
4～6 parts of ethyl celluloses
3～4 parts of absolute ethyl alcohols
0.5～0.8 part of dolomol.
The particle diameter of submicron order feed grade of the present invention oxidation is 0.5～10um.
Farina of the present invention is that a footpath is for being not less than 100um.
A kind of preparation method who encapsulates submicron order zinc oxide feed grade is characterized in that: comprise following processing step:
A, preparatory shielding processing:
A, the farina, ethyl cellulose, absolute ethyl alcohol and the dolomol that granule directly are not less than 100um according to described proportioning mix and obtain the composite shielding agent, from the composite shielding agent that mixes, get 25～32% of its weight again, prepare to be used for preparatory shielding;
B, the composite shielding agent that step a is prepared and the water of its weight 13～16% carry out the preparation of colloid;
C, the colloid of the submicron order feed grade zinc oxide of 0.5～10um and step b preparation was obtained preparatory shielding product in 8～13 minutes 48～52 ℃ of following dispersed with stirring, promptly shielding processing is accomplished in advance;
B, secondary shield are handled:
A, steps A accomplished after 45～55% composite shielding agent and the water of its weight 13～16% of remaining composite shielding agent weight carry out the preparation of colloid;
B, the preparatory shielding product that steps A is obtained mix with the colloid of last step preparation, obtain the secondary shield product in 5～8 minutes 46～50 ℃ of following dispersed with stirring, promptly accomplish secondary shield and handle;
C, three shielding processing:
Remaining composite shielding agent after adding steps A and B accomplish in the secondary shield product obtained shielding product in 6～8 minutes three times 41～48 ℃ of following dispersed with stirring, promptly accomplished whole shielding processes;
D, three shielding products are carried out dried obtain encapsulating submicron order feed grade zinc oxide.
The present invention in the process that the mixing described in a of steps A obtains the composite shielding agent is:
With paddle formula mixer dolomol and ethyl cellulose premixed 2～5 minutes; Again the product that mixes is mixed with farina; When mixing, through the liquid appending apparatus on the mixer absolute ethyl alcohol is added in the mixture, add the mixing of completion continued and promptly got the composite shielding agent in 1～4 minute.
Being prepared as of colloid of the present invention:
Elder generation is added to the composite shielding agent in the stainless steel ware, and starts 15～20 rev/mins of agitating devices, in 2～5 minutes, water is added then, stirs to get final product in 3～4 minutes again.
The preparation method of the submicron order feed grade zinc oxide of 0.5～10um of the present invention is:
With feed grade zinc oxide with airslide disintegrating mill at air pressure 7.2～8.5 kg/cm
2, rate of feeding 1000～1250kg/hr is prepared into the submicron order feed grade zinc oxide of particle diameter 0.5～10um under the condition of grader electric machine frequency 28～50Hz.
The present invention for three shielding products are placed 63～67 ℃ of dryings down, makes moisture content of material be reduced to 8～10% in the dried described in the step D, promptly accomplishes dried.
Above-mentioned dried adopts flash drying equipment to carry out the exhausting drying.
Dispersed with stirring of the present invention is to adopt constant temperature blender with magnetic force to carry out dispersed with stirring.
The useful technique effect that the present invention brings:
1, the feed grade coated zinc oxide produced of the preparation method of coated zinc oxide of the prior art; In small intestine, can not effectively dissociate in time to discharge coated zinc oxide; The zinc oxide that is encapsulated has considerable part to be discharged with ight soil, does not have due effect.Preparation method of the present invention can control the denaturation degrees of screener well; Acquisition is separated shielding at animal alimentary canal stomach, small intestine environment by physiological requirements and is discharged; Can be at the back segment alimentary canal by the effective feed grade zinc oxide product that utilizes of microorganism; Can not cause zinc oxide owing to being excluded the problem of wasting, practice thrift feeding cost;
2, the invention solves common zinc oxide is neutralized by hydrochloric acid in gastric juice easily; Fundamentally reduce the addition of zinc oxide in the weanling pig feed in the low problem of animal intestinal bioavailability; Effectively reduce the discharge rate of zinc in the ight soil, reduce the irreversible pollution of soil and reduce the diarrhea of weaned piglets rate to greatest extent;
3, the particle diameter of the feed grade submicron order zinc oxide of the present invention's employing is 0.5～10um; The powder quantity of the zinc oxide of this fineness is that (fineness mean value is at 110 times of 50～80um) powder quantity for common zinc oxide; Be beneficial to the health-care effect of performance zinc oxide; And consumption can significantly reduce, and can also use the relative simple technology condition to realize fineness requirement, needs complicated technology unlike doing the nano zine oxide that kind;
4, the present invention adopt ad hoc approach preparation feed grade submicron order zinc oxide product as raw material, its preparation method has advantages such as normal-temperature dry preparation, products obtained therefrom particle size range be narrower;
5, select for use ethyl cellulose as controlled release agent, the control trace element zinc discharges in gastric environment in a large number, cannot not avoid suitablely the negative effect of chemical reaction to nutriment; Select for use absolute ethyl alcohol as binder, increase the screener denseness, reduce the influence of moisture, improve shield effectiveness zinc oxide; Selecting dolomol for use is lubricant, promotes the dispersion effect of shielding process, improves a shielding uniformity and sensory effects;
6, the present invention selects the farina with buckshot aggregate structure for use, and its diameter is greater than 100 um, and it is good to have a viscosity, and water is few, and adhesive ability is strong, and modification temperature is low, and the sex change degree of aging is characteristics such as drying time through the back process and temperature control easily.
The specific embodiment
Embodiment 1
A kind of submicron order feed grade zinc oxide that encapsulates is characterized in that: the component that comprises following parts by weight meter is formed:
90 parts in submicron order feed grade zinc oxide
28 parts of composite shielding agent;
Described composite shielding agent comprises the component composition of following parts by weight meter:
80 parts of farinas
4 parts of ethyl celluloses
3 parts of absolute ethyl alcohols
0.5 part of dolomol.
The particle diameter of submicron order feed grade of the present invention oxidation is 0.5um.
Farina of the present invention is that a footpath is 100um.
Embodiment 2
A kind of submicron order feed grade zinc oxide that encapsulates is characterized in that: the component that comprises following parts by weight meter is formed:
120 parts in submicron order feed grade zinc oxide
35 parts of composite shielding agent;
Described composite shielding agent comprises the component composition of following parts by weight meter:
90 parts of farinas
6 parts of ethyl celluloses
4 parts of absolute ethyl alcohols
0.8 part of dolomol.
The particle diameter of submicron order feed grade of the present invention oxidation is 10um.
Farina of the present invention is that a footpath is 300um.
Embodiment 3
A kind of submicron order feed grade zinc oxide that encapsulates is characterized in that: the component that comprises following parts by weight meter is formed:
105 parts in submicron order feed grade zinc oxide
31.5 parts of composite shielding agent;
Described composite shielding agent comprises the component composition of following parts by weight meter:
85 parts of farinas
5 parts of ethyl celluloses
3.5 parts of absolute ethyl alcohols
0.65 part of dolomol.
The particle diameter of submicron order feed grade of the present invention oxidation is 5.25um.
Farina of the present invention is that a footpath is 200um.
Embodiment 4
A kind of submicron order feed grade zinc oxide that encapsulates is characterized in that: the component that comprises following parts by weight meter is formed:
118 parts in submicron order feed grade zinc oxide
30 parts of composite shielding agent;
Described composite shielding agent comprises the component composition of following parts by weight meter:
83 parts of farinas
5.5 parts of ethyl celluloses
3.9 parts of absolute ethyl alcohols
0.77 part of dolomol.
The particle diameter of submicron order feed grade of the present invention oxidation is 8um.
Farina of the present invention is that a footpath is 125um.
Embodiment 5
A kind of preparation method who encapsulates submicron order zinc oxide feed grade comprises following processing step:
A, preparatory shielding processing:
A, the farina, ethyl cellulose, absolute ethyl alcohol and the dolomol that granule directly are not less than 100um according to described proportioning mix and obtain the composite shielding agent, from the composite shielding agent that mixes, get 25% of its weight again, prepare to be used for preparatory shielding;
B, the composite shielding agent that step a is prepared and the water of its weight 13% carry out the preparation of colloid;
C, the colloid of the submicron order feed grade zinc oxide of 0.5um and step b preparation was obtained preparatory shielding product in 8 minutes 48 ℃ of following dispersed with stirring, promptly shielding processing is accomplished in advance;
B, secondary shield are handled:
A, steps A accomplished after 45% composite shielding agent and the water of its weight 13% of remaining composite shielding agent weight carry out the preparation of colloid;
B, the preparatory shielding product that steps A is obtained mix with the colloid of last step preparation, obtain the secondary shield product in 5 minutes 46 ℃ of following dispersed with stirring, promptly accomplish secondary shield and handle;
C, three shielding processing:
Remaining composite shielding agent after adding steps A and B accomplish in the secondary shield product obtained shielding product in 6 minutes three times 41 ℃ of following dispersed with stirring, promptly accomplished whole shielding processes;
D, three shielding products are carried out dried obtain encapsulating submicron order feed grade zinc oxide.
The process that obtains the composite shielding agent in the mixing described in a of steps A is:
With paddle formula mixer dolomol and ethyl cellulose premixed 2 minutes; Again the product that mixes is mixed with the farina that a footpath is not less than 100um; When mixing, through the liquid appending apparatus on the mixer absolute ethyl alcohol is added in the mixture, add the mixing of completion continued and promptly got the composite shielding agent in 1 minute.
Being prepared as of described colloid:
Elder generation is added to the composite shielding agent in the stainless steel ware, and starts 15 rev/mins of agitating devices, in 2 minutes, water is added then, stirs to get final product in 3 minutes again.
The preparation method of the submicron order feed grade zinc oxide of described 0.5um is:
With feed grade zinc oxide with airslide disintegrating mill at air pressure 7.2 kg/cm
2, rate of feeding 1000kg/hr is prepared into the submicron order feed grade zinc oxide of particle diameter 0.5um under the condition of grader electric machine frequency 28Hz.
For three shielding products are placed 63 ℃ of dryings down, make moisture content of material be reduced to 8% in the dried described in the step D, promptly accomplish dried.
Above-mentioned dried adopts flash drying equipment to carry out the exhausting drying.
Described dispersed with stirring is to adopt constant temperature blender with magnetic force to carry out dispersed with stirring.
Embodiment 6
A kind of preparation method who encapsulates submicron order zinc oxide feed grade comprises following processing step:
A, preparatory shielding processing:
A, the farina, ethyl cellulose, absolute ethyl alcohol and the dolomol that granule directly are not less than 100um according to described proportioning mix and obtain the composite shielding agent, from the composite shielding agent that mixes, get 32% of its weight again, prepare to be used for preparatory shielding;
B, the composite shielding agent that step a is prepared and the water of its weight 16% carry out the preparation of colloid;
C, the colloid of the submicron order feed grade zinc oxide of 10um and step b preparation was obtained preparatory shielding product in 13 minutes 52 ℃ of following dispersed with stirring, promptly shielding processing is accomplished in advance;
B, secondary shield are handled:
A, steps A accomplished after 55% composite shielding agent and the water of its weight 16% of remaining composite shielding agent weight carry out the preparation of colloid;
B, the preparatory shielding product that steps A is obtained mix with the colloid of last step preparation, obtain the secondary shield product in 8 minutes 50 ℃ of following dispersed with stirring, promptly accomplish secondary shield and handle;
C, three shielding processing:
Remaining composite shielding agent after adding steps A and B accomplish in the secondary shield product obtained shielding product in 8 minutes three times 48 ℃ of following dispersed with stirring, promptly accomplished whole shielding processes;
D, three shielding products are carried out dried obtain encapsulating submicron order feed grade zinc oxide.
The process that obtains the composite shielding agent in the mixing described in a of steps A is:
With paddle formula mixer dolomol and ethyl cellulose premixed 5 minutes; Again the product that mixes is mixed with the farina that a footpath is not less than 100um; When mixing, through the liquid appending apparatus on the mixer absolute ethyl alcohol is added in the mixture, add the mixing of completion continued and promptly got the composite shielding agent in 4 minutes.
Being prepared as of described colloid:
Elder generation is added to the composite shielding agent in the stainless steel ware, and starts 20 rev/mins of agitating devices, in 5 minutes, water is added then, stirs to get final product in 4 minutes again.
The preparation method of the submicron order feed grade zinc oxide of described 10um is:
With feed grade zinc oxide with airslide disintegrating mill at air pressure 8.5 kg/cm
2, rate of feeding 1250kg/hr is prepared into the submicron order feed grade zinc oxide of particle diameter 10um under the condition of grader electric machine frequency 50Hz.
For three shielding products are placed 67 ℃ of dryings down, make moisture content of material be reduced to 10% in the dried described in the step D, promptly accomplish dried.
Above-mentioned dried adopts flash drying equipment to carry out the exhausting drying.
Described dispersed with stirring is to adopt constant temperature blender with magnetic force to carry out dispersed with stirring.
Embodiment 7
A kind of preparation method who encapsulates submicron order zinc oxide feed grade comprises following processing step:
A, preparatory shielding processing:
A, the farina, ethyl cellulose, absolute ethyl alcohol and the dolomol that granule directly are not less than 100um according to described proportioning mix and obtain the composite shielding agent, from the composite shielding agent that mixes, get 28.5% of its weight again, prepare to be used for preparatory shielding;
B, the composite shielding agent that step a is prepared and the water of its weight 14.5% carry out the preparation of colloid;
C, the colloid of the submicron order feed grade zinc oxide of 5.25um and step b preparation was obtained preparatory shielding product in 10.5 minutes 50 ℃ of following dispersed with stirring, promptly shielding processing is accomplished in advance;
B, secondary shield are handled:
A, steps A accomplished after 50% composite shielding agent and the water of its weight 14.5% of remaining composite shielding agent weight carry out the preparation of colloid;
B, the preparatory shielding product that steps A is obtained mix with the colloid of last step preparation, obtain the secondary shield product in 6.5 minutes 48 ℃ of following dispersed with stirring, promptly accomplish secondary shield and handle;
C, three shielding processing:
Remaining composite shielding agent after adding steps A and B accomplish in the secondary shield product obtained shielding product in 7 minutes three times 44.5 ℃ of following dispersed with stirring, promptly accomplished whole shielding processes;
D, three shielding products are carried out dried obtain encapsulating submicron order feed grade zinc oxide.
The process that obtains the composite shielding agent in the mixing described in a of steps A is:
With paddle formula mixer dolomol and ethyl cellulose premixed 3.5 minutes; Again the product that mixes is mixed with the farina that a footpath is not less than 100um; When mixing, through the liquid appending apparatus on the mixer absolute ethyl alcohol is added in the mixture, add the mixing of completion continued and promptly got the composite shielding agent in 2.5 minutes.
Being prepared as of described colloid:
Elder generation is added to the composite shielding agent in the stainless steel ware, and starts 17.5 rev/mins of agitating devices, in 3.5 minutes, water is added then, stirs to get final product in 3.5 minutes again.
The preparation method of the submicron order feed grade zinc oxide of described 5.25um is:
With feed grade zinc oxide with airslide disintegrating mill at air pressure 7.85 kg/cm
2, rate of feeding 1125kg/hr is prepared into the submicron order feed grade zinc oxide of particle diameter 5.25um under the condition of grader electric machine frequency 28～50Hz.
For three shielding products are placed 65 ℃ of dryings down, make moisture content of material be reduced to 9% in the dried described in the step D, promptly accomplish dried.
Above-mentioned dried adopts flash drying equipment to carry out the exhausting drying.
Described dispersed with stirring is to adopt constant temperature blender with magnetic force to carry out dispersed with stirring.
Embodiment 8
A kind of preparation method who encapsulates submicron order zinc oxide feed grade comprises following processing step:
A, preparatory shielding processing:
A, the farina, ethyl cellulose, absolute ethyl alcohol and the dolomol that granule directly are not less than 100um according to described proportioning mix and obtain the composite shielding agent, from the composite shielding agent that mixes, get 30% of its weight again, prepare to be used for preparatory shielding;
B, the composite shielding agent that step a is prepared and the water of its weight 14% carry out the preparation of colloid;
C, the colloid of the submicron order feed grade zinc oxide of 8um and step b preparation was obtained preparatory shielding product in 9 minutes 51 ℃ of following dispersed with stirring, promptly shielding processing is accomplished in advance;
B, secondary shield are handled:
A, steps A accomplished after 52% composite shielding agent and the water of its weight 15% of remaining composite shielding agent weight carry out the preparation of colloid;
B, the preparatory shielding product that steps A is obtained mix with the colloid of last step preparation, obtain the secondary shield product in 7.5 minutes 47.5 ℃ of following dispersed with stirring, promptly accomplish secondary shield and handle;
C, three shielding processing:
Remaining composite shielding agent after adding steps A and B accomplish in the secondary shield product obtained shielding product in 7.5 minutes three times 45.25 ℃ of following dispersed with stirring, promptly accomplished whole shielding processes;
D, three shielding products are carried out dried obtain encapsulating submicron order feed grade zinc oxide.
The process that obtains the composite shielding agent in the mixing described in a of steps A is:
With paddle formula mixer dolomol and ethyl cellulose premixed 4 minutes; Again the product that mixes is mixed with the farina that a footpath is not less than 100um; When mixing, through the liquid appending apparatus on the mixer absolute ethyl alcohol is added in the mixture, add the mixing of completion continued and promptly got the composite shielding agent in 3 minutes.
Being prepared as of described colloid:
Elder generation is added to the composite shielding agent in the stainless steel ware, and starts 18 rev/mins of agitating devices, in 2.5 minutes, water is added then, stirs to get final product in 3.25 minutes again.
The preparation method of the submicron order feed grade zinc oxide of described 8um is:
With feed grade zinc oxide with airslide disintegrating mill at air pressure 7.7 kg/cm
2, rate of feeding 1200kg/hr is prepared into the submicron order feed grade zinc oxide of particle diameter 8um under the condition of grader electric machine frequency 49Hz.
For three shielding products are placed 66 ℃ of dryings down, make moisture content of material be reduced to 8.5% in the dried described in the step D, promptly accomplish dried.
Above-mentioned dried adopts flash drying equipment to carry out the exhausting drying.
Described dispersed with stirring is to adopt constant temperature blender with magnetic force to carry out dispersed with stirring.
Embodiment 9
Encapsulate the influence of submicron order zinc oxide and common zinc oxide to weanling pig production performance and diarrhea rate:
1, test place: pig farm, Chengdu
2, test combinations: control group (2250ppm common zinc oxide group) and test group (750ppm encapsulates submicron order zinc oxide group).
3, subjects: 28 age in days weanling pigs, totally 600, powder group at random, 300 of 300 test group of control group
4, test period: 30 days
5, test data: average daily gain, average daily ingestion amount, feedstuff-meat ratio, diarrhea rate
6, feeding and management: each organizes feed formula except that zinc oxide addition difference, and other compositions are unanimity, and duration of test is responsible for raising by the special messenger, and environment is consistent, free choice feeding, drinking-water.Carry out the routine immunization sterilization, keep the colony house sanitation and hygiene, observe growing state, carry out relevant record.58 ages in days carry out empty stomach and weigh.
7, result:
Data are summed up
Table one encapsulates submicron order zinc oxide production performance and diarrhea rate analysis
| Project | Control group | Test group |
| Starting weight (kg) | 7.77±0.44 | 7.64±0.26 |
| End heavy (kg) | 19.35±0.46 a | 20.67±0.40 b |
| Average daily gain | 386.00±21.63 a | 434.33±12.01 b |
| Average daily ingestion amount | 645.37±56.86 | 685.03±49.20 |
| Feedstuff-meat ratio | 1.69±0.05 | 1.58±0.09 |
| Diarrhea rate | 8.27±2.05 | 5.20±1.04 |
Conclusion:
Can know by last table that 1, the test group end weighs and average daily gain is significantly higher than control group, improves 6.8%, 12.52% respectively, compare the average daily ingestion amount of test group with control group and improve 6.14% that feedstuff-meat ratio reduces by 6.51%;
2, test group can reduce the diarrhoea incidence of weanling pig, reduces by 37.12% than control group.The reduction of diarrhea rate can influence production performance to a certain extent, promptly cultures the good diarrhea rate of level and will reduce.
Claims (10)
1. one kind encapsulates submicron order feed grade zinc oxide, it is characterized in that: the component that comprises following parts by weight meter is formed:
90～120 parts in submicron order feed grade zinc oxide
28～35 parts of composite shielding agent;
Described composite shielding agent comprises the component composition of following parts by weight meter:
80～90 parts of farinas
4～6 parts of ethyl celluloses
3～4 parts of absolute ethyl alcohols
0.5～0.8 part of dolomol.
2. a kind of submicron order feed grade zinc oxide that encapsulates according to claim 1, it is characterized in that: the particle diameter of described submicron order feed grade oxidation is 0.5～10um.
3. a kind of submicron order feed grade zinc oxide that encapsulates according to claim 1 is characterized in that: described farina is that a footpath is for being not less than 100um.
4. a kind of preparation method who encapsulates submicron order zinc oxide feed grade according to claim 1 is characterized in that: comprise following processing step:
A, preparatory shielding processing:
A, the farina, ethyl cellulose, absolute ethyl alcohol and the dolomol that granule directly are not less than 100um according to described proportioning mix and obtain the composite shielding agent, from the composite shielding agent that mixes, get 25～32% of its weight again, prepare to be used for preparatory shielding;
B, the composite shielding agent that step a is prepared and the water of its weight 13～16% carry out the preparation of colloid;
C, the colloid of the submicron order feed grade zinc oxide of 0.5～10um and step b preparation was obtained preparatory shielding product in 8～13 minutes 48～52 ℃ of following dispersed with stirring, promptly shielding processing is accomplished in advance;
B, secondary shield are handled:
A, steps A accomplished after 45～55% composite shielding agent and the water of its weight 13～16% of remaining composite shielding agent weight carry out the preparation of colloid;
B, the preparatory shielding product that steps A is obtained mix with the colloid of last step preparation, obtain the secondary shield product in 5～8 minutes 46～50 ℃ of following dispersed with stirring, promptly accomplish secondary shield and handle;
C, three shielding processing:
Remaining composite shielding agent after adding steps A and B accomplish in the secondary shield product obtained shielding product in 6～8 minutes three times 41～48 ℃ of following dispersed with stirring, promptly accomplished whole shielding processes;
D, three shielding products are carried out dried obtain encapsulating submicron order feed grade zinc oxide.
5. a kind of preparation method who encapsulates submicron order zinc oxide feed grade according to claim 2 is characterized in that: the process that obtains the composite shielding agent in the mixing described in a of steps A is: with paddle formula mixer dolomol and ethyl cellulose premixed 2～5 minutes; Again the product that mixes is mixed with the farina that a footpath is not less than 100um; When mixing, through the liquid appending apparatus on the mixer absolute ethyl alcohol is added in the mixture, add the mixing of completion continued and promptly got the composite shielding agent in 1～4 minute.
6. a kind of preparation method who encapsulates submicron order zinc oxide feed grade according to claim 2; It is characterized in that: being prepared as of described colloid: earlier the composite shielding agent is added in the stainless steel ware; And start 15～20 rev/mins of agitating devices; In 2～5 minutes, water is added then, stir again and got final product in 3～4 minutes.
7. a kind of preparation method who encapsulates submicron order zinc oxide feed grade according to claim 2 is characterized in that: the preparation method of the submicron order feed grade zinc oxide of described 0.5～10um is: with feed grade zinc oxide with airslide disintegrating mill at air pressure 7.2～8.5 kg/cm
2, rate of feeding 1000～1250kg/hr is prepared into the submicron order feed grade zinc oxide of particle diameter 0.5～10um under the condition of grader electric machine frequency 28～50Hz.
8. a kind of preparation method who encapsulates submicron order zinc oxide feed grade according to claim 2; It is characterized in that: be drying under three shielding products are placed 63～67 ℃ in the dried described in the step D; Make moisture content of material be reduced to 8～10%, promptly accomplish dried.
9. a kind of preparation method who encapsulates submicron order zinc oxide feed grade according to claim 8 is characterized in that: described dried adopts flash drying equipment to carry out the exhausting drying.
10. a kind of preparation method who encapsulates submicron order zinc oxide feed grade according to claim 2 is characterized in that: described dispersed with stirring is to adopt constant temperature blender with magnetic force to carry out dispersed with stirring.
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| CN106173273A (en) * | 2016-07-15 | 2016-12-07 | 东莞市民益生物科技有限公司 | A kind of feedstuff zinc oxide and embedding method thereof |
| CN106562057A (en) * | 2016-11-02 | 2017-04-19 | 浙江大学 | Piglet intestine nutrition regulation and control feed containing cladded zinc oxide |
| CN106615696A (en) * | 2016-12-29 | 2017-05-10 | 四川省旺达饲料有限公司 | Coating type functional amino acid composite preparation for pig and preparation method of coating type functional amino acid composite preparation |
| CN107048002A (en) * | 2016-12-30 | 2017-08-18 | 四川省旺达饲料有限公司 | A kind of coating type composite trace element premix and preparation method thereof |
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