CN108058850A - The crushing packaging method and device of a kind of food-grade calcium oxide - Google Patents
The crushing packaging method and device of a kind of food-grade calcium oxide Download PDFInfo
- Publication number
- CN108058850A CN108058850A CN201810001241.6A CN201810001241A CN108058850A CN 108058850 A CN108058850 A CN 108058850A CN 201810001241 A CN201810001241 A CN 201810001241A CN 108058850 A CN108058850 A CN 108058850A
- Authority
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- China
- Prior art keywords
- calcium oxide
- aggregate bin
- elevator
- crushing
- food
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 239000000292 calcium oxide Substances 0.000 title claims abstract description 77
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 16
- 239000000428 dust Substances 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 14
- 235000019738 Limestone Nutrition 0.000 claims abstract description 9
- 239000006028 limestone Substances 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract description 6
- 230000009471 action Effects 0.000 claims abstract description 4
- 238000000605 extraction Methods 0.000 claims abstract description 4
- 238000012856 packing Methods 0.000 claims description 14
- 239000011575 calcium Substances 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 14
- 239000001569 carbon dioxide Substances 0.000 abstract description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 7
- 235000012255 calcium oxide Nutrition 0.000 description 56
- 239000000843 powder Substances 0.000 description 4
- 238000007792 addition Methods 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- WNBSEAGBLFRJCR-UHFFFAOYSA-N C(=O)=O.[O-2].[Ca+2] Chemical compound C(=O)=O.[O-2].[Ca+2] WNBSEAGBLFRJCR-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 241000276489 Merlangius merlangus Species 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
- B65B1/08—Methods of, or means for, filling the material into the containers or receptacles by vibratory feeders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/30—Devices or methods for controlling or determining the quantity or quality or the material fed or filled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B63/00—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quality & Reliability (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The crushing packaging method and device of a kind of food-grade calcium oxide, it will specifically be crushed using the calcium oxide that lime stone is fired using pulverizer, pulverizer is crushed to the dust collection of calcium oxide process generation using dust-extraction unit, calcium oxide after crushing is entered under conditions of air is completely cut off in the closed elevator of energy by deflector chute, calcium oxide is delivered by aggregate bin by the effect of elevator, under the action of the vibrations blanking device and aggregate bin valve exported mounted on aggregate bin, calcium oxide in aggregate bin can be at regular time and quantity enter discharge bucket, finally the calcium oxide in discharge bucket is packaged using the woven bag of inner lining film.This crushing packaging method and device are quickly collected after can calcium oxide be crushed and are packaged, the entire process for being promoted and being packaged is completed in relatively closed space, will not because calcium oxide expose in air, absorbing carbon dioxide and go bad, the quality of calcium oxide is effectively ensured.
Description
Technical field
The invention belongs to the technical field of lime pulverizing packing apparatus, a kind of specifically crushing of food-grade calcium oxide is packaged
Method and device.
Background technology
Calcium oxide (calcium oxide), is a kind of inorganic compound, its chemical formula is CaO, popular name quick lime.Object
Rationality matter is superficial white powder, and impure person is canescence, in faint yellow or grey during containing impurity, has hygroscopicity.Oxidation
Calcium is basic anhydride, to wet sensitive sense.Absorbing carbon dioxide and moisture easily from air.Generation calcium hydroxide (Ca is reacted with water
(OH) 2) and big calorimetric is generated, be corrosive.By lime stone coarse crushing to 150mm, and screen out the fine slag of 30~below 50mm.Smokelessly
Coal or coke requirement granularity are in below 50mm, and low melting point ash content contained therein should not be excessive, the addition of anthracite or coke
For 7.5%~8.5% (weight) of lime stone.By the lime stone through screening and fuel timing, quantitatively added in by kiln top in kiln, in
900~1200 DEG C of calcinings, then got product through cooling.
Calcium oxide for a long time in air exposure can absorbing carbon dioxide become whiting, however sugar refinery and very much
Chemical plant is commonly called as food-grade calcium oxide, in order to avoid calcium oxide goes bad, need to crush calcium oxide, it is necessary to powdered calcium oxide
It is packaged.It after being crushed using pulverizer, then will be manually packaged in the calcium oxide shovel after crushing to packaging bag, work efficiency is low, and powder
Calcium oxide exposure after broken understands absorbing carbon dioxide and goes bad in air；Therefore, it is necessary to a kind of high calcium oxide of work efficiency
Crushing packing apparatus.
The content of the invention
The object of the present invention is to provide the crushing packaging method and device of a kind of food-grade calcium oxide, this crushing packaging methods
And device calcium oxide can be crushed after quickly collect and be packaged, the calcium oxide after crushing is not exposed in air, because absorbing dioxy
Change carbon and go bad.
Realization that the present invention adopts the following technical solutions：
A kind of crushing packaging method of food-grade calcium oxide is that the calcium oxide that will be fired using lime stone utilizes pulverizer powder
It is broken, it need to generally complete to crush within 48 hours after the calcium oxide fired using lime stone to be packaged；Crushing process need to be used and removed
Pulverizer is crushed the dust collection of calcium oxide process generation by dirt device, improves working environment；Calcium oxide after crushing（During crushing
Needed nets more than 10 mesh）Entered by deflector chute under conditions of air is completely cut off in the closed elevator of energy, pass through elevator
Effect calcium oxide is delivered into aggregate bin, mounted on aggregate bin export vibrations blanking device and aggregate bin valve effect
Under, what the calcium oxide in aggregate bin can be at regular time and quantity enters discharge bucket, finally will be in discharge bucket using the woven bag of inner lining film
Calcium oxide be packaged.The entire packing process that crushes of calcium oxide is not exposed in air, is avoided its absorbing carbon dioxide and is gone bad.
The device that packing process uses that crushes of food-grade calcium oxide includes deduster, pulverizer, elevator and discharge bucket,
The discharge port of the pulverizer is connected by deflector chute with the feed inlet of elevator lower part；The discharge port on elevator top passes through
Blow tank is connected with aggregate bin；The aggregate bin outlet of aggregate bin bottom is by shaking blanking device and going out on hopper base
The feed inlet connection of hopper；The feed inlet top of pulverizer is equipped with dust gathering arrester by dust stent, and dust gathering arrester passes through induced duct
Air-introduced machine is connected with, air-introduced machine is connected by discharge pipe with the deduster on dedusting stent.Calcium oxide after being pulverized,
The entire process for being promoted and being packaged is completed in relatively closed space, will not be exposed in air, be absorbed because of calcium oxide
Carbon dioxide and go bad, the quality of calcium oxide is effectively ensured.Pulverizer can be purchased from Henan dawn heavy industry Science and Technology Co., Ltd.
It buys, address：Zhengzhou City national high and new technology industrial development zone science main road 169.
The deduster is cyclone dust collectors.
The elevator is bucket elevator, including driving-chain, feeding funnel, driving device, belt and promotes casing,
It promotes casing lower part and is provided with feed inlet, promote casing top and be provided with discharge port；Driving-chain is mounted on elevator that can be closed
In shell, feeding funnel is mounted on driving-chain, and driving-chain is connected by belt with driving device.
The aggregate bin outlet is equipped with aggregate bin valve.The amount that calcium oxide is controlled to fall, in the effect of vibrations blanking device
Under, amount in discharge bucket is fallen under calcium oxide is each substantially once, staff is facilitated to weigh packing.
The discharge bucket outlet is equipped with outlet valve.
The crushing packaging method of the food-grade calcium oxide of the present invention is simple, and easy to operate, the apparatus structure of use is simple, sets
It is ingenious, it quickly collects and is packaged after can calcium oxide be crushed, the entire process for being promoted and being packaged all is in relatively closed space
Complete, will not because calcium oxide expose in air, absorbing carbon dioxide and go bad, the quality of calcium oxide is effectively ensured.This oxidation
The crushing packing apparatus of calcium enters the lower part of elevator from the deflector chute of sealing after calcium oxide is crushed, up defeated by feeding funnel
It send, enters from closed blow tank in aggregate bin, then under the action of blanking device is shaken in regular entrance discharge bucket, very
Staff is facilitated to be packaged.The packing efficiency of aggregate bin using the present invention, vibrations blanking device and discharge bucket is only with one
Efficient more than twice of the packing of hopper；Refer to that the calcium oxide after crushing is lifted into hopper by elevator using a hopper
Afterwards, staff is directly packaged from the exit of hopper, without aggregate bin and vibrations blanking device.
Description of the drawings
Fig. 1 is the structure diagram of the crushing packing apparatus of food-grade calcium oxide of the present invention；
Serial number name in figure is：
1st, dedusting stent, 2, deduster, 3, discharge pipe, 4, air-introduced machine, 5, induced duct, 6, dust gathering arrester, 7, dust stent, 8, crush
Machine, 9, deflector chute, 10, driving-chain, 11, feeding funnel, 12, driving device, 13, belt, 14, promote casing, 15, hopper base,
16th, discharge bucket exports, and 17, outlet valve, 18, discharge bucket, 19, feed inlet, 20, vibrations blanking device, 21, aggregate bin outlet, 22, collection
Hopper valve, 23, aggregate bin, 24, blow tank.
Specific embodiment
With reference to embodiment, the technical solution in invention is clearly and completely described, described embodiment is only
Only it is the part of the present invention, instead of all the embodiments.
As shown in the figure：The crushing packaging method of the food-grade calcium oxide of the present invention is will to fire to obtain using lime stone
Calcium oxide is crushed using pulverizer, need to generally be completed to crush within 48 hours after the calcium oxide fired using lime stone and be beaten
Bag；Crushing process need to use dust-extraction unit that pulverizer is crushed to the dust collection of calcium oxide process generation, improve working environment；Powder
Calcium oxide after broken（Nets more than 10 mesh was needed during crushing）It is closed into energy under conditions of air is completely cut off by deflector chute
In elevator, calcium oxide is delivered by aggregate bin by the effect of elevator, in the vibrations blanking exported mounted on aggregate bin
Under the action of device and aggregate bin valve, what the calcium oxide in aggregate bin can be at regular time and quantity enters discharge bucket, finally using inner lining film
Woven bag by discharge bucket calcium oxide be packaged.The entire packing process that crushes of calcium oxide is not exposed in air, avoids it
Absorbing carbon dioxide and go bad.
The device that packing process uses that crushes of food-grade calcium oxide includes deduster 2, pulverizer 8, elevator and discharging
Bucket 18, the discharge port of the pulverizer 8 is connected by deflector chute 9 with the feed inlet of elevator lower part；Elevator top goes out
Material mouth is connected with aggregate bin 23 by blow tank 24；The aggregate bin outlet 21 of 23 bottom of aggregate bin is by shaking blanking device 20 and peace
The feed inlet 19 of discharge bucket 18 on hopper base 15 connects；It is installed by dust stent 7 on the feed inlet top of pulverizer 8
There is dust gathering arrester 6, dust gathering arrester 6 is connected with air-introduced machine 4 by induced duct 5, and air-introduced machine 4 is by discharge pipe 3 with being mounted on dedusting stent 1
On deduster 2 connect.
The deduster 2 is cyclone dust collectors.
The elevator is bucket elevator, including driving-chain 10, feeding funnel 11, driving device 12,13 and of belt
Casing 14 is promoted, 14 lower part of casing is promoted and is provided with feed inlet, 14 top of casing is promoted and is provided with discharge port；Driving-chain 10 is installed
In promotion casing 14 that can be closed, feeding funnel 11 is mounted on driving-chain 10, and driving-chain 10 passes through belt 13 and driving device
12 connections.
The aggregate bin outlet 21 is equipped with aggregate bin valve 22.
The discharge bucket outlet 16 is equipped with outlet valve 17.
Application Example
1st, Guangxi Chemical Co., Ltd. produces food-grade calcium oxide, is originally accumulation after calcium oxide is crushed using pulverizer
Together, then manually shovel pack packing, the calcium oxide that ten tons could be completed in 16 hours or so by needing 5 people are packaged, and because crushing
In air, calcium oxide quality is affected, and working environment dust is bigger for calcium oxide exposure afterwards；Later the said firm is by oxygen
It after changing the crushing of calcium utilization pulverizer, is promoted using elevator into hopper, staff is packaged at hopper outlet again, pulverizer
Place adds dust-extraction unit, and working environment resulting improvement is, it is necessary to which 4 people, 12 hours or so the calcium oxide for completing ten tons are beaten
Bag；Last the said firm make use of the crushing packing apparatus of the calcium oxide of the present invention, working environment resulting improvement, it is only necessary to 2
The calcium oxide that people completes ten tons in ten hours or so is packaged.
Above description is not limitation of the present invention, and the present invention is also not limited to examples detailed above, the art it is general
Logical technical staff, in the essential scope of the present invention, the variations, modifications, additions or substitutions made should all belong to the guarantor of the present invention
Protect scope.
Claims (6)
1. a kind of crushing packaging method of food-grade calcium oxide, it is characterised in that：The calcium oxide that will be fired using lime stone
It is crushed using pulverizer, pulverizer is crushed to the dust collection of calcium oxide process generation, the oxidation after crushing using dust-extraction unit
Calcium is entered under conditions of air is completely cut off in the closed elevator of energy by deflector chute, by the effect of elevator that calcium oxide is defeated
Aggregate bin is fed into, under the action of the vibrations blanking device and aggregate bin valve exported mounted on aggregate bin, the oxidation in aggregate bin
Calcium can be at regular time and quantity enter discharge bucket, finally using inner lining film woven bag by discharge bucket calcium oxide be packaged.
2. the crushing packaging method of food-grade calcium oxide according to claim 1, it is characterised in that：Packing process is crushed to adopt
Device includes deduster（2）, pulverizer（8）, elevator and discharge bucket（18）, the pulverizer（8）Discharge port lead to
Cross deflector chute（9）It is connected with the feed inlet of elevator lower part；The discharge port on elevator top passes through blow tank（24）It is connected with collection
Hopper（23）；Aggregate bin（23）The aggregate bin outlet of bottom（21）By shaking blanking device（20）With mounted on hopper base（15）
On discharge bucket（18）Feed inlet（19）Connection；Pulverizer（8）Feed inlet top pass through dust stent（7）Dust is installed
Cover（6）, dust gathering arrester（6）Pass through induced duct（5）It is connected with air-introduced machine（4）, air-introduced machine（4）Pass through discharge pipe（3）With mounted on except
Dirt stent（1）On deduster（2）Connection.
3. the crushing packaging method of food-grade calcium oxide according to claim 2, it is characterised in that：The deduster
（2）For cyclone dust collectors.
4. the crushing packaging method of food-grade calcium oxide according to claim 2, it is characterised in that：The elevator is
Bucket elevator, including driving-chain（10）, feeding funnel（11）, driving device（12）, belt（13）With promotion casing（14）, carry
Rise casing（14）Lower part is provided with feed inlet, promotes casing（14）Top is provided with discharge port；Driving-chain（10）It is close mounted on energy
The promotion casing closed（14）It is interior, feeding funnel（11）Mounted on driving-chain（10）On, driving-chain（10）Pass through belt（13）And driving
Device（12）Connection.
5. the crushing packaging method of food-grade calcium oxide according to claim 2, it is characterised in that：The aggregate bin goes out
Mouthful（21）Aggregate bin valve is installed（22）.
6. the crushing packaging method of food-grade calcium oxide according to claim 2, it is characterised in that：The discharge bucket goes out
Mouthful（16）Outlet valve is installed（17）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810001241.6A CN108058850A (en) | 2018-01-02 | 2018-01-02 | The crushing packaging method and device of a kind of food-grade calcium oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810001241.6A CN108058850A (en) | 2018-01-02 | 2018-01-02 | The crushing packaging method and device of a kind of food-grade calcium oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108058850A true CN108058850A (en) | 2018-05-22 |
Family
ID=62140784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810001241.6A Pending CN108058850A (en) | 2018-01-02 | 2018-01-02 | The crushing packaging method and device of a kind of food-grade calcium oxide |
Country Status (1)
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| CN (1) | CN108058850A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109158160A (en) * | 2018-08-21 | 2019-01-08 | 郑州莉迪亚医药科技有限公司 | A kind of industrial chemicals lump grinding system |
| CN112173185A (en) * | 2020-11-21 | 2021-01-05 | 湖南湘钢工程技术有限公司 | Automatic quantitative sub-packaging system |
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| CN107089357A (en) * | 2017-05-26 | 2017-08-25 | 肇庆市端州区澳蒋科技有限公司 | High-Speed Automatic weighing-packaging machine |
| CN207809827U (en) * | 2018-01-02 | 2018-09-04 | 广西联源机械化工有限公司 | A kind of crushing packing apparatus of food-grade calcium oxide |
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| CN109158160A (en) * | 2018-08-21 | 2019-01-08 | 郑州莉迪亚医药科技有限公司 | A kind of industrial chemicals lump grinding system |
| CN112173185A (en) * | 2020-11-21 | 2021-01-05 | 湖南湘钢工程技术有限公司 | Automatic quantitative sub-packaging system |
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