CN113439800A - Liquid acidifier for promoting ingestion of pigs and poultry and preparation method and application thereof - Google Patents
Liquid acidifier for promoting ingestion of pigs and poultry and preparation method and application thereof Download PDFInfo
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- CN113439800A CN113439800A CN202110580127.5A CN202110580127A CN113439800A CN 113439800 A CN113439800 A CN 113439800A CN 202110580127 A CN202110580127 A CN 202110580127A CN 113439800 A CN113439800 A CN 113439800A
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/10—Organic substances
- A23K20/105—Aliphatic or alicyclic compounds
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K40/00—Shaping or working-up of animal feeding-stuffs
- A23K40/10—Shaping or working-up of animal feeding-stuffs by agglomeration; by granulation, e.g. making powders
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K50/00—Feeding-stuffs specially adapted for particular animals
- A23K50/30—Feeding-stuffs specially adapted for particular animals for swines
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K50/00—Feeding-stuffs specially adapted for particular animals
- A23K50/60—Feeding-stuffs specially adapted for particular animals for weanlings
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K50/00—Feeding-stuffs specially adapted for particular animals
- A23K50/70—Feeding-stuffs specially adapted for particular animals for birds
- A23K50/75—Feeding-stuffs specially adapted for particular animals for birds for poultry
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23N—MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
- A23N17/00—Apparatus specially adapted for preparing animal feeding-stuffs
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23N—MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
- A23N17/00—Apparatus specially adapted for preparing animal feeding-stuffs
- A23N17/007—Apparatus specially adapted for preparing animal feeding-stuffs for mixing feeding-stuff components
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Abstract
The invention provides a liquid acidulant for promoting ingestion of pigs and poultry and a preparation method and application thereof, the liquid acidulant comprises 1-5kg of sodium diacetate, 1-2kg of calcium citrate, 0.5-1.0kg of calcium formate and 92-97.5kg of deionized water, and the pH value of the liquid acidulant is 3.5-4.3. Adopt the mixer spraying prefabricated powder when liquid acidifier uses, mix the machine and include first bulk material awl of pivoted, second bulk material awl and stirring blade to and be used for the endless screw conveyer of prefabricated powder, screw conveyer's discharge gate is located the top of first bulk material awl, and the below of first bulk material awl is provided with first spraying piece, and the below of second bulk material awl is provided with the second spraying piece, and the top is provided with gathers the flitch. The liquid acidifier provided by the invention can be used for properly improving the feed intake of pigs and poultry, reducing diarrhea of pigs and poultry, promoting growth and marketing of pigs and poultry, and the mixer is beneficial to uniform spraying of the liquid acidifier, and the spraying and stirring time is prolonged.
Description
Technical Field
The invention relates to the technical field of feed additives, in particular to a liquid acidifier for promoting the ingestion of pigs and poultry and a preparation method and application thereof.
Background
In the feeding process of the pigs and the poultry, the problems of diarrhea, poor feed intake, slow growth and the like easily occur, and the feed plays an important role in solving the problems. In the prior art, an acidifying agent is added into the feed mostly, but the added acidifying agent is beneficial to improving the feed intake of the pigs and the poultry, but the diarrhea rate is still high, the effect of reducing the diarrhea rate is limited, and the growth of the pigs and the poultry is still slow.
When the compound feed is prepared, the liquid acidifier needs to be sprayed and mixed in the process of adding the liquid acidifier to the material, so that the liquid acidifier and the material are fully mixed. However, the existing mixer still has the following problems when spraying liquid acidulant: (1) the spraying effect is poor, the mixing uniformity of the material and the liquid acidifier is poor, and the material is easy to agglomerate; (2) in order to provide the spraying effect, the spraying time and the stirring time are longer, the production efficiency is lower, and the uneven spraying is easy to occur when the spraying time and the stirring time are shortened.
Disclosure of Invention
The invention provides a liquid acidifier for promoting the ingestion of pigs and poultry, and a preparation method and application thereof, which can improve the ingestion of the pigs and poultry in a proper amount, reduce the diarrhea of the pigs and poultry, and promote the growth and marketing of the pigs and poultry.
The technical scheme of the invention is realized as follows: a liquid acidifier for promoting feeding of pigs and poultry comprises 1kg-5kg of sodium diacetate, 1kg-2kg of calcium citrate, 0.5kg-1.0kg of calcium formate and 92kg-97.5kg of deionized water, wherein the pH of the liquid acidifier is 3.5-4.3.
A preparation method of a liquid acidulant for promoting ingestion of pigs and poultry comprises the steps of dissolving 1kg-5kg of sodium diacetate, 1kg-2kg of calcium citrate and 0.5kg-1.0kg of calcium formate in deionized water, diluting to 100kg, uniformly stirring, and standing for 1 hour to obtain the liquid acidulant, wherein the pH value of the liquid acidulant is 3.5-4.3.
The application of a liquid acidifier for promoting the ingestion of pigs and poultry is characterized in that the liquid acidifier is added into a compound feed, and the specific adding method is as follows:
(1) crushing and screening raw materials of the compound feed to obtain prefabricated powder with the particle size of less than 2.0 mm;
(2) feeding the prefabricated powder into a mixer, spraying the prefabricated powder by using a liquid acidifying agent under the stirring state, wherein the spraying speed is 30L/min, continuously stirring for 120-150 seconds after spraying to obtain a mixed prefabricated material, and performing a material granulation process on the mixed prefabricated material.
Further, the mixing machine comprises a tank body, a vertical rotating shaft is arranged in the tank body, first bulk material cones are sequentially arranged on the rotating shaft at intervals from top to bottom, the second bulk material awl and stirring blade, the internal first spraying piece that is provided with of jar of below of first bulk material awl, the internal flitch that gathers that is provided with the back taper of jar between first spraying piece and the second bulk material awl, the internal second spraying piece that is provided with of jar of second bulk material awl below, the outside of jar body is provided with vertical screw conveyer, the internal bottom of jar is provided with the decurrent stock guide of slope, be provided with screw conveyer's feed inlet on the jar body of stock guide lower extreme, the upside in the jar body is provided with the downward elephant trunk of slope, the upper end of elephant trunk links to each other with screw conveyer's upper end discharge gate, the lower extreme of elephant trunk is located the top of first bulk material awl, screw conveyer's lower extreme is provided with the lower extreme discharge gate, lower extreme discharge gate department is provided with the control valve.
Further, first spraying spare and second spraying spare are all including being fixed in the internal ring conduit of jar, and the last ascending atomizer that inclines that has followed the circumference equipartition of ring conduit, and atomizer's liquid outlet links to each other with the delivery pump through first transfer line, and the delivery pump links to each other with the batching jar of liquid acidifier, is provided with (mixing) shaft and a plurality of pH sensor in the batching jar, is provided with the flowmeter on the first transfer line.
Furthermore, the lower end of the material gathering plate is provided with a material gathering port, the material gathering port is positioned above the second bulk material cone and is arranged coaxially with the rotating shaft, and the inner diameter of the material gathering port is larger than the outer diameter of the upper end of the second bulk material cone and smaller than the outer diameter of the lower end of the second bulk material cone.
The invention has the beneficial effects that:
the liquid acidifier provided by the invention can be used for properly improving the feed intake of pigs and poultry, reducing diarrhea of pigs and poultry and promoting growth and slaughtering of the pigs and poultry.
According to the mixer disclosed by the invention, the prefabricated powder in the tank body is scattered and scattered through the first bulk cone, the liquid acidifying agent is sprayed for the first time through the first spraying piece, and is sent to the second bulk cone through the material gathering plate, the liquid acidifying agent is scattered and scattered for the second time, the liquid acidifying agent is sprayed for the second time through the second spraying piece, the contact area of the prefabricated powder and the liquid acidifying agent is increased through the matching of the plurality of bulk cones and the spraying pieces, the spraying efficiency and uniformity are improved, the spraying time is shortened, then the prefabricated powder is stirred and crushed through the stirring blade, the agglomeration of the sprayed prefabricated powder is avoided, the prefabricated powder is sent to the spiral conveyor for conveying and stirring, the circulating stirring and conveying of the prefabricated powder in the mixer are realized through the matching of the stirring blade, the material guide plate and the spiral conveyor, the stirring efficiency is improved, and the stirring time is shortened.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the mixer structure.
The material mixing device comprises a tank body 1, a rotating shaft 2, a first motor 3, a first bulk material cone 4, a second bulk material cone 5, a stirring blade 6, a material collecting plate 7, a spiral conveyer 8, a material guide plate 9, a feeding hole 10, a chute 11, an upper end discharging hole 12, a lower end discharging hole 13, a control valve 14, an annular pipeline 15, an atomizing nozzle 16, a first infusion tube 17, a delivery pump 18, a batching tank 19, a second motor 20, a stirring shaft 21, a pH sensor 22 and a flowmeter 23.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
A liquid acidifier for promoting ingestion of pig and fowl comprises sodium diacetate 2.5kg, calcium citrate 1.5kg, calcium formate 1.0kg and deionized water 95 kg.
The preparation method of the liquid acidifier for promoting the ingestion of the pigs and the poultry comprises the steps of dissolving 2.5kg of sodium diacetate (with the purity of more than 99%), 1.5kg of calcium citrate (with the purity of more than 98%) and 1kg of calcium formate (with the purity of more than 99.5%) in deionized water, diluting to 100kg, uniformly stirring, and standing for 1 hour to obtain the liquid acidifier, wherein the pH value of the liquid acidifier is 3.5-4.3.
Example 2
This embodiment is substantially the same as embodiment 1 except that: a liquid acidifier for promoting ingestion of pig and fowl comprises sodium diacetate 1kg, calcium citrate 2kg, calcium formate 0.8kg and deionized water 96.2 kg.
Example 3
This embodiment is substantially the same as embodiment 1 except that: a liquid acidifier for promoting ingestion of pig and fowl comprises sodium diacetate 5kg, calcium citrate 1kg, calcium formate 0.5kg and deionized water 93.5 kg.
Example 4
The application of the liquid acidifier for promoting the ingestion of the pig and the poultry in any one of the embodiments 1 to 3, the addition amount of the liquid acidifier is as follows per ton of pig compound feed: the additive amount of piglet feed is 30L, the additive amount of growing-finishing pig feed is 20L, the additive amount of pregnant sow feed is 20L, and the additive amount of lactating sow, nonpregnant sow and replacement sow is 30L-40L; the addition amount of the liquid acidifier in each ton of laying hen compound feed is as follows: adding 20L at 0-3 weeks old, adding 25L-35L after laying eggs at 3 weeks old until laying eggs at 30L.
Adding a liquid acidifier into a compound feed, wherein the specific adding method comprises the following steps:
(1) crushing and screening raw materials of the compound feed to obtain prefabricated powder with the particle size of less than 2.0mm, and crushing to increase the specific surface area of the material and improve the contact area of liquid spraying;
(2) feeding the prefabricated powder into a mixer, keeping the prefabricated powder in a stirring state, and spraying the prefabricated powder by adopting a liquid acidifier at a spraying speed of 30L/min; and continuously stirring for 120-150 seconds after spraying to obtain a mixed prefabricated material, and using the mixed prefabricated material for feed granulation.
Comparative example 1
The liquid acidifier for the piglet creep feed is prepared by the following method: 4kg of calcium citrate and 1kg of calcium formate are dissolved in deionized water and then diluted to 100 kg.
Comparative example 2
This example is substantially the same as example 4, except that: the liquid acidulant is prepared by the following method: after 4kg of sodium diacetate and 1kg of calcium formate were dissolved in deionized water, the solution was diluted to 100 kg.
Taking a piglet creep feed as an example, the dosage of the liquid acidifier is 30L/ton, the liquid acidifier of the example 1, the comparative example 1 and the comparative example 2 is added into the piglet creep feed, the piglet creep feed comprises 95.5 wt% of main feed auxiliary materials and 4.5 wt% of small feed, and the main feed auxiliary materials are prepared from the following raw materials: 590kg of corn, 190kg of soybean meal, 90kg of expanded soybean, 55kg of whey powder, 15kg of fish meal, 23kg of white sugar, 22kg of glucose, 2.8kg of sodium chloride, 6.0kg of calcium hydrophosphate and 8.0kg of soybean oil. The small material is prepared from the following raw materials: 0.2kg of compound vitamin, 1.0kg of compound trace element, 6.7kg of amino acid, 0.2kg of ethoxyquin and 41.1kg of zeolite powder.
The amino acids include lysine 4.0kg, methionine 0.7kg, threonine 1.2kg, and tryptophan 0.8 kg. The compound vitamin comprises 0.07kg of vitamin A, 30.08kg of vitamin D and 0.05kg of vitamin E. The compound trace elements comprise ferrous sulfate 0.3kg, copper sulfate 0.3kg, zinc sulfate 0.2kg, manganese sulfate 0.1kg, selenium yeast 0.05kg and calcium iodate 0.05 kg.
The specific adding method comprises the following steps: (1) respectively crushing and screening the raw materials of the main material and the auxiliary material to obtain prefabricated powder with the particle size of less than 1.0 mm;
(2) preparing the prefabricated powder of each raw material in the step (1) according to the required dosage, feeding the prefabricated powder into a mixer for uniformly mixing to obtain a large-material premix, and performing primary granulation and tempering on the large-material premix, wherein the specific method for the primary granulation and tempering comprises the following steps: firstly, steam tempering is carried out on a premix of a main material, and the steam temperature is 95 ℃; then the mixture is sent into a granulator for granulation, and the compression ratio of a granulation ring die is 1: 4, the aperture of the die hole of the ring die is 2.5 mm; finally, the prepared material particles are sent into a cooler to be cooled, so as to obtain a first granulated material, wherein the temperature of the first granulated material is higher than the room temperature by 10 ℃, and the water content is 15.0 wt%;
(3) crushing the first granulated material, sieving, adopting a sieve plate with the aperture of 2.0mm to obtain a large mixed material with the particle size of less than 2.0mm, and mixing the small materials uniformly after preparing the small materials according to the required dosage to obtain a small mixed material;
(4) feeding the mixed big material and the mixed small material in the step (3) into a mixer, and spraying by using a liquid acidifier under the stirring state, wherein the spraying rate is 30L/min; after spraying, the net mixing time is 120 seconds, and a mixed prefabricated material is obtained;
(5) and (4) carrying out secondary granulation and tempering on the mixed prefabricated material in the step (4), wherein the specific method for the secondary granulation and tempering is as follows: carrying out steam tempering on the mixed prefabricated material, wherein the steam temperature is 55 ℃; then the mixture is sent into a granulator for granulation, and the compression ratio of a granulation ring die is 1: and 4, the aperture of a die hole of the ring die is 2.5mm, finally, the prepared material particles are sent into a cooler to be cooled, so that the piglet creep feed is obtained, the temperature of the piglet creep feed is controlled within +/-5 ℃ at room temperature, and the water content is kept at 12 wt%.
The experiment is carried out in a certain pig farm, piglets of 4 pregnant sows in a delivery room are selected as experimental objects and are randomly divided into 4 groups, piglet creep feeds prepared by respectively adopting the liquid acidifiers of the example 1, the comparative example 1 and the comparative example 2 are adopted, the blank group is a creep feed without adding the liquid acidifier, and the influence of the creep feed on the diarrhea of the weaned piglets and the influence on the growth performance of the weaned piglets are researched. The test is divided into two stages: the results are shown in table 1 from the first stage of weaning piglets from 7-10 days of age to weaning piglets, and in table 2 from the second stage of weaning piglets to the end of turning the piglets (about 28 days of age).
TABLE 1 results of the first stage (addition of creep to weaning)
As can be seen from table 1, the piglets fed with the creep feed to the weaning stage had the lowest diarrhea rate of only 4.56% using the liquid acidifier of example 1; the liquid acidulant of example 1 was used, and the average weight gain after weaning was the highest, 3.27 Kg; the feed intake, the highest in the blank group, was in the third row of example 1.
TABLE 2 results of the second stage (weaning to transfer of piglets)
As can be seen from table 2, with the liquid acidulant of example 1, the piglets had a minimum diarrhea rate of 2.42% in the case of the swizzle, and the third in the feed intake, the highest daily gain. In conclusion, the acidifying agent is added in the creep feed, so that the piglets eat more feed, have less diarrhea and gain weight quickly.
Example 5
In embodiment 4 step (2), as shown in fig. 1, the mixer includes a jar body 1, is provided with vertical axis of rotation 2 in jar body 1, and the upper end of axis of rotation 2 links to each other with first motor 3, and it is rotatory through first motor 3 drive axis of rotation 2, and from the top down interval is fixed with first bulk material awl 4, second bulk material awl 5 and stirring blade 6 in proper order in the axis of rotation 2, and first bulk material awl 4 and second bulk material awl 5 all include the conical body, and the upper end external diameter of conical body is less, and the lower extreme external diameter is great, has a plurality of decurrent guide ways along the circumference equipartition on the lateral wall of conical body.
The internal fixation of jar 1 below first bulk material awl 4 has first spraying piece, be fixed with the flitch 7 that gathers of back taper on jar body 1 inner wall between first spraying piece and the second bulk material awl 5, the upper end internal diameter of gathering flitch 7 is great, and links to each other with jar internal wall is fixed of body 1, the lower extreme internal diameter of gathering flitch 7 is less, and is provided with and gathers the material mouth, it is located the top of second bulk material awl 5 to gather the material mouth, and sets up with axis of rotation 2 coaxial lines, the internal diameter that gathers the material mouth is greater than the upper end external diameter of second bulk material awl 5, is less than the lower extreme external diameter of second bulk material awl 5.
The internal second spraying piece that is fixed with of jar of body 1 below second bulk material awl 5, the outside of jar body 1 is fixed with vertical screw conveyer 8, the bottom in the jar body 1 is fixed with slope decurrent stock guide 9, be provided with screw conveyer 8's feed inlet 10 on the jar body 1 of stock guide 9 lower extreme, upside in the jar body 1 is fixed with slope decurrent elephant trunk 11, the upper end of elephant trunk 11 links to each other with screw conveyer 8's upper end discharge gate 12, the lower extreme of elephant trunk 11 is located the top of first bulk material awl 4, screw conveyer 8's lower extreme is provided with lower extreme discharge gate 13, lower extreme discharge gate 13 department installs control valve 14.
First spraying spare and second spraying spare are all including being fixed in the ring conduit 15 of jar internal 1, have the ascending atomizer 16 of slope along the circumference equipartition on the ring conduit 15, the liquid outlet of atomizer 16 is towards axis of rotation 2, ring conduit 15 links to each other with delivery pump 18 through first transfer line 17, delivery pump 18 links to each other with the batching jar 19 of liquid acidifier, be provided with second motor 20 driven (mixing) shaft 21 and a plurality of pH sensor 22 in the batching jar 19, install flowmeter 23 on the first transfer line 17.
The mixer also comprises a PLC controller, and the first motor 3, the second motor 20, the screw conveyer 8, the conveying pump 18, the flow meter 23 and the pH sensor 22 are all connected with the PLC controller.
The application method of the embodiment comprises the following steps: sodium diacetate, calcium citrate, calcium formate and deionized water are added into a mixing tank 19 according to the required dosage, a second motor 20 is started to drive a stirring shaft 21 to rotate, and the pH value of the solution is monitored in real time through a pH sensor 22 to obtain a liquid acidifying agent.
Adding prefabricated powder of each raw material in the compound feed into the tank body 1 according to the required dosage, starting the first motor 3 and the screw conveyer 8, enabling the prefabricated powder to enter the screw conveyer 8 through the feeding hole 10, mixing and stirring the various prefabricated powder in the screw conveyer 8, conveying the mixture to the upper end discharge hole 12, and conveying the mixture to the upper end of the first bulk cone 4 through the chute 11.
The infusion pump is started, and the prepared liquid acidulant is respectively delivered to the first spraying piece and the second spraying piece through the first delivery pipe and then is sprayed out through the atomizing nozzle 16. The first motor 3 drives the first bulk cone 4, the second bulk cone 5 and the stirring blade 6 to rotate, the prefabricated powder falling on the first bulk cone 4 is scattered along the circumferential direction of the lower end of the first bulk cone 4 under the action of centrifugal force, is sprayed with a liquid acidifier by a first spraying piece, falls on the material collecting plate 7, falls on the second bulk cone 5 through a material collecting port, is scattered along the circumferential direction of the lower end of the second bulk cone 5 under the action of centrifugal force, is sprayed with the liquid acidifier by the second spraying piece, falls on the material guide plate 9, is stirred and smashed by the stirring blade, and is prevented from caking; the preformed powder sprayed with the acidifying agent slides down along the guide plate and returns to the screw conveyor 8 through the feed inlet 10 to form a circulation through the screw conveyor 8, when the flow meter 23 detects that the liquid acidifying agent is sprayed to a required dosage, the conveying pump 18 is closed, the first motor 3 and the screw conveyor 8 continue to work for a set time length to ensure that various preformed powder and the acidifying agent are fully mixed, the control valve 14 is opened, and the mixed preformed material after spraying is discharged through the lower end discharge port 13 and is sent to the feed granulating process.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A liquid acidifier for promoting ingestion of pigs and poultry is characterized in that: comprises 1kg to 5kg of sodium diacetate, 1kg to 2kg of calcium citrate, 0.5kg to 1.0kg of calcium formate and 92kg to 97.5kg of deionized water, wherein the pH value of the liquid acidifier is 3.5 to 4.3.
2. A preparation method of a liquid acidifier for promoting the ingestion of pigs and poultry is characterized in that: dissolving 1kg-5kg of sodium diacetate, 1kg-2kg of calcium citrate and 0.5kg-1.0kg of calcium formate in deionized water, diluting to 100kg, stirring uniformly, and standing for 1 hour to obtain the liquid acidulant, wherein the pH value of the liquid acidulant is 3.5-4.3.
3. The use of a liquid acidulant for promoting feeding of swine and poultry according to claim 1 wherein the liquid acidulant is added to the formula feed by the following specific addition method:
(1) crushing and screening raw materials of the compound feed to obtain prefabricated powder with the particle size of less than 2.0 mm;
(2) feeding the prefabricated powder into a mixer, spraying the prefabricated powder by using a liquid acidifying agent under the stirring state, wherein the spraying speed is 30L/min, continuously stirring for 120-150 seconds after spraying to obtain a mixed prefabricated material, and performing a material granulation process on the mixed prefabricated material.
4. The application of claim 3, wherein in the step (2), the mixer comprises a tank body, a vertical rotating shaft is arranged in the tank body, a first bulk material cone, a second bulk material cone and a stirring blade are sequentially arranged on the rotating shaft at intervals from top to bottom, a first spraying piece is arranged in the tank body below the first bulk material cone, an inverted cone-shaped material gathering plate is arranged in the tank body between the first spraying piece and the second bulk material cone, a second spraying piece is arranged in the tank body below the second bulk material cone, a vertical screw conveyor is arranged on the outer side of the tank body, a guide plate which inclines downwards is arranged at the bottom in the tank body, a feed inlet of the screw conveyor is arranged on the tank body at the lower end of the guide plate, a chute which inclines downwards is arranged on the upper side in the tank body, the upper end of the chute is connected with a discharge outlet at the upper end of the screw conveyor, and the lower end of the chute is positioned above the first bulk material cone, the lower end of the screw conveyer is provided with a lower end discharge hole, and a control valve is arranged at the lower end discharge hole.
5. The application of claim 4, wherein the first spraying part and the second spraying part each comprise an annular pipeline fixed in the tank body, the annular pipeline is uniformly provided with atomizing nozzles which are inclined upwards along the circumferential direction, the liquid outlets of the atomizing nozzles face to the rotating shaft, the annular pipeline is connected with a delivery pump through a first liquid conveying pipe, the delivery pump is connected with a blending tank of the liquid acidifying agent, a stirring shaft and a plurality of pH sensors are arranged in the blending tank, and a flow meter is arranged on the first liquid conveying pipe.
6. The application of claim 4 or 5, characterized in that the lower end of the material gathering plate is provided with a material gathering port which is positioned above the second bulk material cone and is coaxial with the rotating shaft, and the inner diameter of the material gathering port is larger than the outer diameter of the upper end of the second bulk material cone and smaller than the outer diameter of the lower end of the second bulk material cone.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114916616A (en) * | 2022-02-10 | 2022-08-19 | 无锡正大生物股份有限公司 | Water-soluble compound acidifier and production method thereof |
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