CN211823763U - Wet grinding superfine calcium carbonate hot air recovery drying device - Google Patents
Wet grinding superfine calcium carbonate hot air recovery drying device Download PDFInfo
- Publication number
- CN211823763U CN211823763U CN202020382078.5U CN202020382078U CN211823763U CN 211823763 U CN211823763 U CN 211823763U CN 202020382078 U CN202020382078 U CN 202020382078U CN 211823763 U CN211823763 U CN 211823763U
- Authority
- CN
- China
- Prior art keywords
- calcium carbonate
- storage cylinder
- hot air
- drying device
- powder
- 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.)
- Expired - Fee Related
Links
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 64
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 32
- 238000001035 drying Methods 0.000 title claims abstract description 22
- 238000001238 wet grinding Methods 0.000 title claims abstract description 14
- 238000011084 recovery Methods 0.000 title claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 33
- 238000003860 storage Methods 0.000 claims abstract description 31
- 238000003756 stirring Methods 0.000 claims abstract description 19
- 239000000428 dust Substances 0.000 claims abstract description 11
- 238000001704 evaporation Methods 0.000 claims abstract description 5
- 230000008020 evaporation Effects 0.000 claims abstract description 5
- 238000004806 packaging method and process Methods 0.000 claims abstract description 5
- 238000012856 packing Methods 0.000 claims abstract description 5
- 238000004064 recycling Methods 0.000 claims abstract 4
- 239000002002 slurry Substances 0.000 claims description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 5
- 238000005054 agglomeration Methods 0.000 claims description 2
- 230000002776 aggregation Effects 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000007921 spray Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Abstract
The utility model provides a wet grinding superfine calcium carbonate hot-air recovery drying device, includes thick liquids fog spray nozzle (1), breaks up device (2), hot-air feed inlet (3), flash dryer (4), grader (5), gas vent (6), dust shaker (7), feed opening (8), puddler (9), hot-air inlet (10), storage cylinder (11) and ejection of compact packing mouth (12). The device provided by the invention can be used for recycling the hot air after flash evaporation drying, heating and insulating the calcium carbonate powder storage cylinder through the hot air, and meanwhile, the rotary stirring rod is designed in the storage cylinder to stir the powder at a low speed, so that the device is beneficial to evaporation and removal of moisture in the calcium carbonate powder, greatly reduces the moisture content of the calcium carbonate powder, can also be used for preventing the calcium carbonate powder from generating a bridging effect in the storage cylinder, and is beneficial to blanking and packaging of the calcium carbonate powder.
Description
Technical Field
The utility model relates to a wet grinding superfine calcium carbonate hot-air recovery drying device belongs to fine chemical industry technical field.
Background
The wet grinding process of superfine calcium carbonate is one kind of grinding production process with water as dispersing medium, and includes compounding slurry with certain solid content, adding grinding assistant, grinding calcium carbonate into slurry with required fineness, pumping the slurry into flash drier with hot air produced by burning natural gas as drying heat source at 350 deg.c, and heat exchange between the slurry and the hot air to dry the slurry instantaneously. The flash drying process has the advantages of high drying efficiency, high capacity, simplicity in operation and the like, but due to the fact that drying time is very short, incomplete drying often occurs, evaporated water vapor is difficult to be completely discharged in a dryer at one time, the calcium carbonate powder which is dried instantly absorbs the water vapor, the calcium carbonate powder is not completely dried, the water content of the calcium carbonate powder is high, the application of the calcium carbonate powder in downstream industries is affected, hot air (the temperature reaches 220 ℃) after flash drying is generally used as waste gas to be discharged, and resources are wasted.
Disclosure of Invention
The utility model aims at providing a wet grinding superfine calcium carbonate hot air recovery drying device in order to solve the incomplete flash drying of wet grinding superfine calcium carbonate, the higher scheduling problem of powder moisture.
The technical scheme of the utility model is that the hot air recovery drying device for wet grinding of ultrafine calcium carbonate comprises a flash dryer, a storage cylinder and a dust remover; the outlet of the flash dryer is used for grading and screening the powder through a grading machine and then is connected with the inlet of the storage cylinder through a pipeline; the inlet of the storage cylinder is also provided with a dust remover.
A slurry spraying opening is formed in the lowermost end wall of the flash dryer, and slurry enters the flash dryer from the slurry spraying opening; a scattering device is arranged at the center of the bottom of the flash dryer; the inner wall of the flash dryer above the scattering device is provided with a hot air inlet.
The storage cylinder is of a double-layer stainless steel inverted frustum cylinder structure, and the gap between the two layers of stainless steel is 10 cm.
The lower bottom of the storage cylinder is a discharging packaging opening; the central position of the storage cylinder is provided with a stirring rod, and 3 pairs of blades which are symmetrical up and down are uniformly distributed on the stirring rod; the stirring rod stirs the powder at a low speed, prevents the dry powder agglomeration of a storage cylinder, and makes the dry powder more easily fall to the ejection of compact packing mouth.
Hot air inlets and exhaust ports are respectively arranged on two sides of the same cross section diameter on the inclined wall at the upper part of the storage cylinder; the hot air inlet is connected with the dust remover through a pipeline.
The beneficial effects of the utility model are that, by a wet grinding superfine calcium carbonate hot-air recovery drying device of present modified, the hot-air after the flash drying is retrieved and is recycled, heat the heat preservation to calcium carbonate powder storage cylinder through the hot-air, design the rotation puddler simultaneously and carry out the low-speed stirring to the powder in the storage cylinder, not only do benefit to the evaporation of moisture in the calcium carbonate powder and get rid of, greatly reduced calcium carbonate powder's moisture content, can also prevent simultaneously that calcium carbonate powder from producing the bridging effect in the storage cylinder, do benefit to calcium carbonate powder's unloading packing.
Drawings
FIG. 1 is a schematic structural diagram of the device of the present invention;
in the figure, 1 is a slurry spray port; 2 is a breaking device; 3 is a hot air inlet; 4 is a flash dryer; 5 is a classifier; 6 is an exhaust port; 7 is a dust remover; 8 is a feed opening; 9 is a stirring rod; 10 is a hot air inlet; 11 is a storage cylinder; and 12 is a discharge packaging opening.
Detailed Description
The specific embodiment of the present invention is shown in fig. 1.
The embodiment provides a wet grinding superfine calcium carbonate hot-air recovery drying device, including thick liquids fog spray nozzle 1, break up device 2, hot-air feed inlet 3, flash dryer 4, grader 5, gas vent 6, dust shaker 7, feed opening 8, puddler 9, hot-air inlet 10, a storage cylinder 11 and ejection of compact packing mouth 12.
The storage cylinder 11 of the device of the embodiment is a cone of double-layer stainless steel, the gap between the two layers of stainless steel is 10cm, the diameter of the top of the cylinder is 2.5m, the height of the cylinder is 4m, and the storage cylinder is vertically arranged on the ground.
The stirring rod 9 in the storage cylinder of the device of the embodiment is arranged in the middle of the cylinder body and is driven to stir by a transmission shaft and a stirring motor, 3 pairs of blades which are symmetrical up and down are arranged on the stirring rod 9, the diameter of the stirring rod is 8cm, and the stirring rod is made of stainless steel; the distance from the hot air inlet 10 to the top of the cylinder is 30cm, and the distance from the exhaust port 6 to the top of the cylinder is 20 cm.
The working principle and the process flow of the embodiment are as follows: the slurry is sprayed into a flash evaporation dryer 4 through a slurry spraying port 1, hot air exchanges heat with atomized slurry through a hot air inlet 3, calcium carbonate powder is dried instantly, the dried calcium carbonate powder is classified and screened through a classifier 5, unqualified powder falls to the bottom and is depolymerized and scattered through a scattering device 2, the scattered powder is introduced into a dust remover 7 through the classifier 5 in a classifying mode, the powder and the hot air are separated through a dust removing sheet, the separated powder enters a storage cylinder 11 through a discharge port 8, the hot air enters the storage cylinder 11 through a hot air inlet 10 and is heated, the powder of the storage cylinder is stirred and dried at a low speed through a stirring rod 9, the hot air after being heated is discharged through a discharge port 6, and finally the heated and dried powder is discharged and packaged through a discharge packaging port 12.
Claims (5)
1. A wet grinding superfine calcium carbonate hot air recovery drying device is characterized by comprising a flash evaporation dryer, a storage cylinder and a dust remover; the outlet of the flash dryer is used for grading and screening the powder through a grading machine and then enters a storage cylinder through a pipeline; the inlet of the storage cylinder is also provided with a dust remover.
2. The wet-grinding ultrafine calcium carbonate hot air recovery drying device according to claim 1, wherein a slurry spraying port is arranged on the lowermost end wall of the flash dryer, and the slurry enters the flash dryer from the slurry spraying port; a scattering device is arranged at the center of the bottom of the flash dryer; the inner wall of the flash dryer above the scattering device is provided with a hot air inlet.
3. The hot air recycling drying device for wet grinding ultrafine calcium carbonate according to claim 1, wherein the storage cylinder is an inverted frustum cylinder structure with two layers of stainless steel, and the gap between the two layers of stainless steel is 10 cm.
4. The hot air recycling drying device for wet grinding ultrafine calcium carbonate according to claim 3, wherein the lower bottom of the storage cylinder with a small diameter is a discharge packaging opening; the central position of the storage cylinder is provided with a stirring rod, and 3 pairs of blades which are symmetrical up and down are uniformly distributed on the stirring rod; the stirring rod stirs the powder at a low speed, prevents the dry powder agglomeration of a storage cylinder, and makes the dry powder more easily fall to the ejection of compact packing mouth.
5. The hot air recycling and drying device for wet-ground ultrafine calcium carbonate according to claim 1, wherein the inclined wall of the upper part of the storage cylinder is provided with a hot air inlet and an air outlet on two sides of the same cross-sectional diameter; the hot air inlet is connected with the dust remover through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020382078.5U CN211823763U (en) | 2020-03-24 | 2020-03-24 | Wet grinding superfine calcium carbonate hot air recovery drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020382078.5U CN211823763U (en) | 2020-03-24 | 2020-03-24 | Wet grinding superfine calcium carbonate hot air recovery drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211823763U true CN211823763U (en) | 2020-10-30 |
Family
ID=73010798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020382078.5U Expired - Fee Related CN211823763U (en) | 2020-03-24 | 2020-03-24 | Wet grinding superfine calcium carbonate hot air recovery drying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211823763U (en) |
-
2020
- 2020-03-24 CN CN202020382078.5U patent/CN211823763U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201030 |