CN212663823U - Food-grade calcium carbonate raw ore color sorting system - Google Patents
Food-grade calcium carbonate raw ore color sorting system Download PDFInfo
- Publication number
- CN212663823U CN212663823U CN202020878232.8U CN202020878232U CN212663823U CN 212663823 U CN212663823 U CN 212663823U CN 202020878232 U CN202020878232 U CN 202020878232U CN 212663823 U CN212663823 U CN 212663823U
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- Prior art keywords
- cleaning
- belt conveyor
- rotating shaft
- rotary drum
- calcium carbonate
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 48
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 24
- 238000004140 cleaning Methods 0.000 claims abstract description 78
- 238000012216 screening Methods 0.000 claims abstract description 18
- 238000007599 discharging Methods 0.000 claims description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 235000013305 food Nutrition 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims 6
- 238000007790 scraping Methods 0.000 claims 3
- 239000010865 sewage Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 10
- 239000004575 stone Substances 0.000 description 10
- 238000005406 washing Methods 0.000 description 5
- 239000010802 sludge Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 235000013365 dairy product Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 230000035764 nutrition Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 235000013622 meat product Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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Abstract
A food-grade calcium carbonate raw ore color sorting system comprises a jaw crusher, wherein a belt conveyor is arranged below a discharge port of the jaw crusher, an output end of the belt conveyor extends to a feeding end of a screening device, a belt conveyor is arranged below a discharge port of the screening device, an output end of the belt conveyor extends to an inlet of a cleaning device, a belt conveyor is arranged below a discharge port of the cleaning device, and an output end of the belt conveyor extends to a feeding end of the color sorting machine; and a drainage pool is arranged below the screening device, and a drainage outlet of the drainage pool is communicated with an inlet of the filter press through a pipeline. The whole process from crushing to color sorting can be continuously carried out, the cleaned sewage is treated by using a filter press, the environmental protection is facilitated, and the production efficiency of the whole system is high.
Description
Technical Field
The utility model belongs to food level calcium carbonate production technology field, in particular to food level calcium carbonate raw ore look selection system.
Background
The food-grade calcium carbonate is used as a high-quality calcium source for supplementing calcium and various nutrition enhancers, is widely applied to the industries of calcium-supplementing nutrition and health care food and medicine in modern life, and is a high-quality nutrition-enhancing additive in the industries of dairy products, meat products, flour products, dairy products and the like. The food-grade calcium carbonate is prepared from raw ore, and the food-grade calcium carbonate powder is prepared by crushing, screening, grinding and other processes. The raw calcium carbonate ore is white stone, and the stone collected from the mine is mixed with a plurality of stones with other colors, and the white raw calcium carbonate ore is generally screened out by a color sorter. The existing color sorting system production process cannot be continuously carried out, and the production efficiency is low.
Disclosure of Invention
In view of the technical problem that the background art exists, the utility model provides a food level calcium carbonate raw ore look selection system can go on in succession from broken to the whole technology of look selection, and the sewage after the washing utilizes the pressure filter to handle, helps the environmental protection, and entire system production efficiency is than higher.
In order to solve the technical problem, the utility model discloses following technical scheme has been taken and has been realized:
a food-grade calcium carbonate raw ore color sorting system comprises a jaw crusher, wherein a belt conveyor is arranged below a discharge port of the jaw crusher, an output end of the belt conveyor extends to a feeding end of a screening device, a belt conveyor is arranged below a discharge port of the screening device, an output end of the belt conveyor extends to an inlet of a cleaning device, a belt conveyor is arranged below a discharge port of the cleaning device, and an output end of the belt conveyor extends to a feeding end of the color sorting machine; and a drainage pool is arranged below the screening device, and a drainage outlet of the drainage pool is communicated with an inlet of the filter press through a pipeline.
In the preferred scheme, jaw breaker include one-level jaw breaker and second grade jaw breaker, one-level jaw breaker discharge gate below is equipped with belt conveyor, belt conveyor's output extends to second grade jaw breaker's pan feeding end, second grade jaw breaker discharge gate below is equipped with belt conveyor, belt conveyor's output extends to screening plant's pan feeding end.
In a preferred scheme, the cleaning device comprises a cleaning rotary drum, a plurality of water permeable holes are formed in the outer wall of the cleaning rotary drum, hollow rotary shafts are arranged at two ends of the cleaning rotary drum and are connected with a bearing seat, a water inlet pipeline is arranged above the cleaning rotary drum, a plurality of water spray heads are arranged on the water inlet pipeline, a drainage pool is arranged below the cleaning rotary drum, and the cleaning rotary drum is arranged on the drainage pool through the bearing seat; the hollow rotating shaft comprises a feeding end hollow rotating shaft and a discharging end hollow rotating shaft, and the cleaning rotating drum is arranged from one end of the feeding end hollow rotating shaft to one end of the discharging end hollow rotating shaft in a downward inclined mode; the feeding end hollow rotating shaft is connected with the cleaning rotary drum through an annular baffle, the discharging end hollow rotating shaft is connected with the cleaning rotary drum through a plurality of supporting rods, the plurality of supporting rods are annularly arranged around the discharging end hollow rotating shaft, and a discharging port of the cleaning device is formed by a gap between every two adjacent supporting rods; the cleaning drum is driven to rotate by a driving device.
In a preferred scheme, one end of the hollow rotating shaft at the feeding end is provided with a feeding hopper, the feeding hopper comprises a blanking pipe, and the blanking pipe is obliquely downwards inserted into the hollow rotating shaft at the feeding end and extends into the cleaning rotary drum; the outer wall of the feed hopper is fixed through a bracket.
In the preferred scheme, one end of the hollow rotating shaft at the discharging end is provided with a sealing plate, and the sealing plate is arranged close to one side of the cleaning rotary drum.
In the preferred scheme, a plurality of strip-shaped scrapers are arranged on the inner wall of the cleaning rotary drum, the strip-shaped scrapers are arranged in parallel with the axis of the cleaning rotary drum, and the strip-shaped scrapers are annularly arranged around the axis of the cleaning rotary drum.
In the preferred scheme, a water outlet is formed in the bottom of the drainage pool, bearing piers are arranged at two ends of the drainage pool, and the bearing seat is used for being installed on the bearing piers; and a discharging slope is arranged below the discharging port of the cleaning device, and material blocking walls are arranged on two sides of the discharging slope.
In the preferred scheme, the unloading slope is of a hollow structure, a plurality of water seepage holes are formed in the slope surface of the unloading slope, and the water seepage holes are communicated with the drainage pool.
In a preferred scheme, the driving device comprises a driving gear, a gear ring and a motor, the gear ring is arranged on the outer wall of the hollow rotating shaft at the discharging end, the driving gear is meshed with the gear ring, and the motor is used for driving the driving gear to rotate.
In the preferred scheme, the lower part of the discharging slope is used for arranging a belt conveyer, the water outlet is communicated with the inlet of the filter press through a pipeline, and the upper part of the feed hopper is used for arranging the belt conveyer.
This patent can reach following beneficial effect:
one-level jaw crusher is used for broken bold ore, and second grade jaw crusher carries out the breakage once more with the preliminary broken fritter ore of one-level jaw crusher to obtain the ore of tiny particle, the ore of tiny particle is sieved through screening plant, and the tiny particle ore that satisfies the demands washs through belt cleaning device, washs the sewage that produces and falls into to the drainage pond, gets into the pressure filter from the outlet exhaust sewage of drainage pond and extrudees the filtration, and mud has formed the clod. The cleaned small-particle ore enters the color sorter for color sorting, and the stones introduced into the color sorter are all the stones with small particle size difference and clean, so that the color sorting quality is improved. The whole process from crushing to color sorting can be continuously carried out, the cleaned sewage is treated by a filter press, the environment is protected, and the production efficiency of the whole system is high.
Drawings
The invention will be further explained with reference to the following figures and examples:
FIG. 1 is a system structure diagram of the present invention;
FIG. 2 is a front view of the cleaning apparatus;
FIG. 3 is a first three-dimensional structural view of a cleaning drum of the cleaning apparatus;
FIG. 4 is a second three-dimensional structural view of a cleaning drum of the cleaning apparatus;
FIG. 5 is a cross-sectional view of a cleaning drum of the cleaning apparatus;
FIG. 6 is a front view of a feed hopper of the cleaning apparatus;
fig. 7 is a three-dimensional structure view of a drainage basin of the cleaning device.
In the figure: the device comprises a cleaning rotary drum 1, a water inlet pipeline 2, a water spraying head 3, a drainage pool 4, a water outlet 41, a bearing pier 5, a bearing seat 6, a feeding end hollow rotary shaft 71, a discharging end hollow rotary shaft 72, an annular baffle plate 8, a support rod 9, a feeding hopper 10, a sealing plate 11, a strip-shaped scraper 12, a discharging slope 13, a material blocking wall 14, a water seepage hole 15, a driving gear 16, a gear ring 17, a motor 18, a primary jaw crusher 19, a secondary jaw crusher 20, a screening device 21, a cleaning device 22, a color sorter 23 and a filter press 24.
Detailed Description
The preferable scheme is as shown in fig. 1, the food-grade calcium carbonate raw ore color sorting system comprises a jaw crusher, wherein a belt conveyor is arranged below a discharge port of the jaw crusher, an output end of the belt conveyor extends to a feeding end of a screening device 21, a belt conveyor is arranged below a feed opening of the screening device 21, an output end of the belt conveyor extends to an inlet of a cleaning device 22, a belt conveyor is arranged below a feed opening of the cleaning device 22, and an output end of the belt conveyor extends to a feeding end of a color sorter 23; a drainage pool 44 is arranged below the sieving device 21, and a drainage port 41 of the drainage pool 4 is communicated with the inlet of the filter press 24 through a pipeline. The filter press 24 is used for separating sewage and squeezing and filtering water in the sludge to form sludge blocks, and the sludge blocks are convenient to transport and treat. The raw calcium carbonate ore is white stone, and the stone collected from the mine is mixed with a plurality of stones with other colors, and the white raw calcium carbonate ore is screened out by the color sorter 23.
Further, jaw crusher includes one-level jaw crusher 19 and second grade jaw crusher 20, and 19 discharge gates below of one-level jaw crusher are equipped with belt conveyor, and belt conveyor's output extends to the pan feeding end of second grade jaw crusher 20, and 20 discharge gates below of second grade jaw crusher are equipped with belt conveyor, and belt conveyor's output extends to the pan feeding end of screening plant 21. The primary jaw crusher 19 is used to crush large lumps of ore and the secondary jaw crusher 20 is used to crush small lumps of ore.
Further, as shown in fig. 2-7, the cleaning device 22 includes a cleaning drum 1, the outer wall of the cleaning drum 1 is provided with a plurality of water permeable holes, two ends of the cleaning drum 1 are provided with hollow rotating shafts, the hollow rotating shafts are connected with a bearing seat 6, a water inlet pipe 2 is arranged above the cleaning drum 1, the water inlet pipe 2 is provided with a plurality of water spray heads 3, a water discharge pool 4 is arranged below the cleaning drum 1, and the cleaning drum 1 is mounted on the water discharge pool 4 through the bearing seat 6; the hollow rotating shaft comprises a feeding end hollow rotating shaft 71 and a discharging end hollow rotating shaft 72, and the cleaning rotating drum 1 is arranged from one end of the feeding end hollow rotating shaft 71 to one end of the discharging end hollow rotating shaft 72 in a downward inclined mode; the feeding end hollow rotating shaft 71 is connected with the cleaning rotating drum 1 through an annular baffle 8, the discharging end hollow rotating shaft 72 is connected with the cleaning rotating drum 1 through a plurality of supporting rods 9, the plurality of supporting rods 9 are annularly arranged around the discharging end hollow rotating shaft 72, and a discharging port of the cleaning device is formed by a gap between every two adjacent supporting rods 9; the cleaning drum 1 is driven to rotate by a driving device.
Be used for in the hollow pivot 71 of feed end to drop into needs abluent ore, it is rotatory that washing rotary drum 1 can take the ore, and sprinkler bead 3 is to washing rotary drum 1 water spray simultaneously, and sewage sees through in the hole of permeating water drops to drainage pond 4, because washing rotary drum 1 is slope setting, at the rotatory in-process of ore, the ore can remove to belt cleaning device discharge gate one end slowly, and the ore of wasing the completion is discharged from the belt cleaning device discharge gate.
Further, one end of the feeding end hollow rotating shaft 71 is provided with a feeding hopper 10, the feeding hopper 10 comprises a discharging pipe, and the discharging pipe is obliquely downwards inserted into the feeding end hollow rotating shaft 71 and extends into the cleaning rotary drum 1; the outer wall of the feed hopper 10 is fixed by a bracket. Ore to be cleaned is fed from a feed hopper 10 into the cleaning bowl 1.
Furthermore, a sealing plate 11 is arranged at one end of the hollow rotating shaft 72 at the discharging end, and the sealing plate 11 is arranged close to one side of the cleaning drum 1. The closing plate 11 has the functions of: the ore that the completion was washd is avoided dropping to the hollow pivot 72 of discharge end in.
Further, wash 1 inner wall of rotary drum and be provided with a plurality of bar scraper blades 12, bar scraper blade 12 and wash 1 axis parallel arrangement of rotary drum, and a plurality of bar scraper blades 12 are around washing 1 axis annular setting of rotary drum. Strip scraper blade 12 can drive some ore and promote certain height, and when strip scraper blade 12 rotated certain angle, the ore can the landing, has played the effect of upset ore repeatedly, is favorable to overturning the upper strata with the ore of extrusion at the bottom, makes the cleaning process more thorough, washs rotary drum 1 simultaneously and does not need high-speed rotation, helps reducing and washs 1 rotational speed of rotary drum, has reduced the energy consumption, also helps increasing equipment life.
Furthermore, a water outlet 41 is arranged at the bottom of the drainage pool 4, bearing piers 5 are arranged at two ends of the drainage pool 4, and the bearing seat 6 is used for mounting the bearing piers 5; and a discharging slope 13 is arranged below a discharging hole of the cleaning device, and material blocking walls 14 are arranged on two sides of the discharging slope 13. The cleaned ore falls from the discharge port of the cleaning device to the discharging slope 13 and falls from the discharging slope 13 to the belt conveyor, and the belt conveyor conveys the cleaned ore to the color sorter 23.
Furthermore, the unloading slope 13 is of a hollow structure, a plurality of water seepage holes 15 are formed in the slope surface of the unloading slope 13, and the water seepage holes 15 are communicated with the drainage pool 4. The cleaned ore can be mixed with moisture, and the slope surface is provided with a plurality of seepage holes 15 which are helpful for further draining the ore.
Further, the driving device comprises a driving gear 16, a gear ring 17 and a motor 18, wherein the gear ring 17 is arranged on the outer wall of the hollow rotating shaft 72 at the discharging end, the driving gear 16 is meshed with the gear ring 17, and the motor 18 is used for driving the driving gear 16 to rotate. The motor 18 is fixed on the bearing pier 5 through a motor base.
As shown in FIG. 1, a belt conveyer is arranged below the discharge slope 13, the water outlet 41 is communicated with the inlet of the filter press 24 through a pipeline, and the belt conveyer is arranged above the feed hopper 10.
The working principle of the whole device is as follows:
one-level jaw crusher 19 is used for broken bold ore, second grade jaw crusher 20 carries out breakage once more with the preliminary broken fritter ore of one-level jaw crusher 19, thereby obtain the ore of tiny particle, the ore of tiny particle is sieved through screening plant 21, the tiny particle ore that satisfies the requirement washs through belt cleaning device 22, the sewage that washs the production falls into to drainage tank 4, 41 exhaust sewage entering pressure filter 24 from drainage tank 4's outlet extrudees and filters, mud has formed the clod. The cleaned small-particle ore enters the color sorter 23 for color sorting, and the stones introduced into the color sorter 23 are all stones with small particle size difference and clean, so that the color sorting quality is improved.
Claims (10)
1. The utility model provides a food level calcium carbonate raw ore look selects system, includes jaw breaker, and jaw breaker discharge gate below is equipped with belt conveyor, its characterized in that: the output end of the belt conveyor extends to the feeding end of the screening device (21), the belt conveyor is arranged below the feed opening of the screening device (21), the output end of the belt conveyor extends to the inlet of the cleaning device (22), the belt conveyor is arranged below the feed opening of the cleaning device (22), and the output end of the belt conveyor extends to the feeding end of the color sorter (23); a drainage pool (4) is arranged below the screening device (21), and a drainage port (41) of the drainage pool (4) is communicated with an inlet of the filter press (24) through a pipeline.
2. The system of claim 1, wherein the system comprises: jaw breaker includes one-level jaw breaker (19) and second grade jaw breaker (20), and one-level jaw breaker (19) discharge gate below is equipped with belt conveyor, and belt conveyor's output extends to the pan feeding end of second grade jaw breaker (20), and second grade jaw breaker (20) discharge gate below is equipped with belt conveyor, and belt conveyor's output extends to the pan feeding end of screening plant (21).
3. The system for color sorting food grade calcium carbonate raw ore according to claim 2, characterized in that: the cleaning device (22) comprises a cleaning rotary drum (1), a plurality of water permeable holes are formed in the outer wall of the cleaning rotary drum (1), hollow rotary shafts are arranged at two ends of the cleaning rotary drum (1) and connected with a bearing seat (6), a water inlet pipeline (2) is arranged above the cleaning rotary drum (1), a plurality of water spray heads (3) are arranged on the water inlet pipeline (2), a drainage pool (4) is arranged below the cleaning rotary drum (1), and the cleaning rotary drum (1) is installed on the drainage pool (4) through the bearing seat (6); the hollow rotating shaft comprises a feeding end hollow rotating shaft (71) and a discharging end hollow rotating shaft (72), and the cleaning rotating drum (1) is arranged in a manner that the cleaning rotating drum is inclined downwards from one end of the feeding end hollow rotating shaft (71) to one end of the discharging end hollow rotating shaft (72); the feeding end hollow rotating shaft (71) is connected with the cleaning rotating drum (1) through an annular baffle (8), the discharging end hollow rotating shaft (72) is connected with the cleaning rotating drum (1) through a plurality of supporting rods (9), the supporting rods (9) are annularly arranged around the discharging end hollow rotating shaft (72), and a gap between every two adjacent supporting rods (9) forms a discharging port of the cleaning device; the cleaning rotary drum (1) is driven to rotate by a driving device.
4. The system of claim 3, wherein the food grade calcium carbonate raw ore color separation system comprises: a feeding hopper (10) is arranged at one end of the feeding end hollow rotating shaft (71), the feeding hopper (10) comprises a discharging pipe, and the discharging pipe is obliquely downwards inserted into the feeding end hollow rotating shaft (71) and extends into the cleaning rotary drum (1); the outer wall of the feed hopper (10) is fixed by a bracket.
5. The system of claim 4, wherein the food grade calcium carbonate raw ore color separation system comprises: a sealing plate (11) is arranged at one end of the discharge end hollow rotating shaft (72), and the sealing plate (11) is arranged close to one side of the cleaning rotary drum (1).
6. The system of claim 5, wherein the food grade calcium carbonate raw ore color separation system comprises: the inner wall of the cleaning rotary drum (1) is provided with a plurality of strip-shaped scraping plates (12), the strip-shaped scraping plates (12) are arranged in parallel with the axis of the cleaning rotary drum (1), and the strip-shaped scraping plates (12) are arranged annularly around the axis of the cleaning rotary drum (1).
7. The system of claim 6, wherein the food grade calcium carbonate raw ore color separation system comprises: a water outlet (41) is formed in the bottom of the drainage pool (4), bearing piers (5) are arranged at two ends of the drainage pool (4), and the bearing seat (6) is used for being installed on the bearing piers (5); a discharging slope (13) is arranged below a discharging hole of the cleaning device, and material blocking walls (14) are arranged on two sides of the discharging slope (13).
8. The system of claim 7, wherein the food grade calcium carbonate raw ore color separation system comprises: the unloading slope (13) is of a hollow structure, a plurality of water seepage holes (15) are formed in the slope surface of the unloading slope (13), and the water seepage holes (15) are communicated with the drainage pool (4).
9. The system of claim 8, wherein the food grade calcium carbonate raw ore color separation system comprises: the driving device comprises a driving gear (16), a gear ring (17) and a motor (18), the gear ring (17) is arranged on the outer wall of the hollow rotating shaft (72) at the discharging end, the driving gear (16) is meshed with the gear ring (17), and the motor (18) is used for driving the driving gear (16) to rotate.
10. The system for color sorting food grade calcium carbonate raw ore according to claim 9, wherein: the lower part of the unloading slope (13) is provided with a belt conveyer, the water outlet (41) is communicated with the inlet of the filter press (24) through a pipeline, and the upper part of the feed hopper (10) is provided with the belt conveyer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020878232.8U CN212663823U (en) | 2020-05-22 | 2020-05-22 | Food-grade calcium carbonate raw ore color sorting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020878232.8U CN212663823U (en) | 2020-05-22 | 2020-05-22 | Food-grade calcium carbonate raw ore color sorting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212663823U true CN212663823U (en) | 2021-03-09 |
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ID=74812064
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020878232.8U Expired - Fee Related CN212663823U (en) | 2020-05-22 | 2020-05-22 | Food-grade calcium carbonate raw ore color sorting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212663823U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115401009A (en) * | 2022-08-29 | 2022-11-29 | 大连弘源矿业有限公司 | Mineral washing processing equipment and use method thereof |
-
2020
- 2020-05-22 CN CN202020878232.8U patent/CN212663823U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115401009A (en) * | 2022-08-29 | 2022-11-29 | 大连弘源矿业有限公司 | Mineral washing processing equipment and use method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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Granted publication date: 20210309 |