CN209583646U - A kind of quartz sand exclusion device - Google Patents
A kind of quartz sand exclusion device Download PDFInfo
- Publication number
- CN209583646U CN209583646U CN201821595817.8U CN201821595817U CN209583646U CN 209583646 U CN209583646 U CN 209583646U CN 201821595817 U CN201821595817 U CN 201821595817U CN 209583646 U CN209583646 U CN 209583646U
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- China
- Prior art keywords
- pickling
- quartz sand
- mixing drum
- stirring rod
- guide rail
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Abstract
The utility model discloses a kind of quartz sand exclusion devices, including body, the left and right sides at the top of the body is separately installed with feed hopper and feed liquor bucket, washing motor is installed at the top of the body, the output end of the washing motor is extended in the body and connect with the top of the intracorporal agitating shaft of the machine；Guide rail is installed on the body intracavity sidewall, is slidably fitted with mixing drum on the guide rail；The length of the guide rail is greater than 2.5~4 times of the mixing drum height.The utility model passes through provided with guide rail and the mixing drum that can be slided up and down along guide rail, realize the washing, pickling and magnetic separation of quartz sand, the effect of washing, pickling and magnetic separation can be made more preferable by stirring, improve the impurity-eliminating effect of quartz sand, the purity for increasing quartz sand, improves the dust removal rate of quartz sand.
Description
Technical field
The utility model relates to quartz sand working process technical field, specifically a kind of quartz sand exclusion device.
Background technique
Quartz sand is quartz through the broken quartz particles being process, and it is one that quartz, which is a kind of nonmetallic mineral,
Hard, wear-resisting, stable chemical performance the silicate mineral of kind, main mineral constituent is SiO2.The color of quartz sand is milky white
Color or semi-transparent clear shape, Mohs' hardness 7.Quartz sand is important industrial mineral raw material, and non-chemical dangerous material are widely used in
Glass, casting, ceramics and fire proofing material, smelting duriron, flux for metallurgy, metallurgy, building, chemical industry, plastics, rubber, abrasive material, filtrate
Equal industry.
It is substantially purified without purification by mineral or slightly for the high grade quartz sand in the places of production some for China
Meet industrial sand demand.But most of quartz sand raw material is other than containing quartz, there are also other ten several silicate minerals and
Metalliferous mineral, as hornblend, mica, allochite, garnet, pyroxene, tourmaline, corundum, calcite and magnetic iron ore, bloodstone,
Ilmenite etc..In addition there are clay minerals made of weathering.Therefore the removal of impurities of quartz sand is increasingly important.
Summary of the invention
The purpose of this utility model is to provide the quartz sand exclusion devices that one kind can obtain glass sand.
A kind of quartz sand exclusion device, including body, the left and right sides at the top of the body are separately installed with feed hopper
With feed liquor bucket, washing motor is installed at the top of the body, the output end of the washing motor extends in the body
And it is connect with the top of the intracorporal agitating shaft of the machine；Guide rail is installed on the body intracavity sidewall, at the body bottom
Two side position of portion is equipped with the guide rail motor for controlling the guide rail movement, and the guide rail motor is connect with the guide rail；In
Mixing drum is slidably fitted on the guide rail；The limit for limiting the mixing drum movement is installed in the guide rail end
Block；The length of the guide rail is 2.5~4 times of the mixing drum height.
The bottom of the agitating shaft extends in the mixing drum, the mixing drum upper end opening, and with the feed hopper
It is connected to feed liquor bucket；The agitating shaft is equipped with the stirring rod of several levels.
It is equipped with pickling motor in the bottom centre position of the mixing drum, the output end of the pickling motor extends to described
In body and with the intracorporal pickling axis connection of the machine；The upper half of the pickling axis is to accommodate central axis, the receiving center
The diameter of section of axis is less than pickling axis lower half section, to form multi-diameter shaft；It is equipped on the outside of the receiving central axis
Several pickling stirring rods, the pickling stirring rod are hinged at the ladder for the multi-diameter shaft to be formed, and the pickling stirring rod is logical
Spring and receiving center axis connection are crossed, the spring is the pickling stirring rod and the receiving center under natural length
Axis is angled to be distributed on the receiving central axis periphery, and can be rotated with this state with the pickling axis；Described
The end of pickling stirring rod is equipped with pickling block.
The acid solution is the mixing of one or more of hydrofluoric acid, nitric acid, hydrochloric acid, sulfuric acid, the pH value of the acid solution
It is 1~2.
Sealing plate is equipped on the mixing drum bottom centre position, the sealing plate is hollow ring structure, the acid
Axis is washed across the sealing plate, and forms sealing structure；When the mixing drum is slided up and down along the guide rail, the sealing
Plate slides up and down on the pickling axis；When the sealing plate slides into the limited block position of the guide rail end, the receiving
The pickling stirring rod on central axis periphery scatters under the elastic force effect of spring, forms the stirring structure of back taper, at this time
The mixing drum is in pickling position；At the sealing plate upward sliding to the pickling stirring rod ends position, the acid
It washes stirring rod to collect under the active force of the sealing plate, is stopped by the pickling block, form complete pickling axis, at this time
The mixing drum is in washing position.
The time of the pickling and washing is 2~4 hours, and the volume ratio of the quartz sand and water is 1~1.5:3, institute
The volume ratio for stating quartz sand and acid solution is 1~1.5:2.
Several strainers are equipped on the side surface circumference of the mixing drum bottom position；It is equipped on the organism sidewall several
For being passed through the leakage fluid dram, several acid-filling mouths for being passed through acid filling pipe and several acid discharges for being used to be passed through acid tube of drain pipe
Mouthful；The position of the leakage fluid dram is the side screen location when mixing drum is in washing position；The position of the acid-filling mouth
At entry position when being in pickling position for the mixing drum；The position of the acid discharge mouth is that the mixing drum is in pickling position
Side screen location when setting.
Bottom is provided with the oblique filter plate of filter opening in the body, and the radius of the filter opening of the oblique filter plate is less than quartz sand
Radius；It is also equipped with through slot in the organism bottom, the quartz sand after removal of impurities is collected by the through slot.
The quantity of the stirring rod is 3~5, and is arranged for uniform intervals.
Several first bar magnets have been evenly arranged on each stirring rod；The first bar magnet number on each stirring rod
Amount is 6~8, and is evenly arranged on the downside of the stirring rod.
The quantity of the pickling stirring rod is 4~8.
Several second bar magnets are equipped on the upside of the pickling stirring rod, with described the on the receiving central axis lateral surface
The corresponding position of two bar magnets is equipped with holding tank.
The quantity of second bar magnet is to be uniformly distributed 3~6 the second bar magnets on the every pickling stirring rod.
The magnetic field strength of first bar magnet and the second bar magnet is 600~12000 Gausses.
The pickling stirring rod is in natural conditions 30~60 ° with the angle for accommodating central axis.
The backplate of annular is equipped with below the sealing plate；The diameter of the backplate is greater than the diameter of the sealing plate.
Sealing baffle is equipped on the position concordant with the limited block of the guide rail of pickling axis lower part.
The guide rail motor and the pickling motor are installed in electric motor protecting shell.
The utility model has the advantages that
The utility model realizes quartz sand by the mixing drum that is provided with guide rail and can slide up and down along guide rail
Washing, pickling and magnetic separation can make the effect of washing, pickling and magnetic separation more preferable, improve removing for quartz sand by stirring
Miscellaneous effect increases the purity of quartz sand, improves the dust removal rate of quartz sand.
Detailed description of the invention
Sectional view when Fig. 1 is the quartz sand exclusion device washing of the utility model.
Sectional view when Fig. 2 is the quartz sand exclusion device pickling of the utility model.
The sectional view of side when Fig. 3 is the quartz sand exclusion device washing of the utility model.
The sectional view of side when Fig. 4 is the quartz sand exclusion device pickling of the utility model.
Wherein, 1 is body, and 2 be feed hopper, and 3 be feed liquor bucket, and 4 be washing motor, and 5 be agitating shaft, and 6 be stirring rod, and 7 are
First bar magnet, 8 be guide rail, and 9 be limited block, and 10 be mixing drum, and 11 be sealing plate, and 12 be guide rail motor, and 13 be pickling motor, 14
It is pickling stirring rod for pickling axis, 15,16 be sealing baffle, and 17 be pickling block, and 18 be backplate, and 19 be oblique filter plate, and 20 be appearance
Receive central axis, 21 be the second bar magnet, and 22 be leakage fluid dram, and 23 be acid-filling mouth, and 24 be acid discharge mouth.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.
Sectional view when Fig. 1 is the quartz sand exclusion device washing of the utility model.As shown in Figure 1, the utility model
Quartz sand exclusion device includes body 1, is separately installed with feed hopper 2 and feed liquor bucket 3 in the left and right sides at 1 top of body,
Washing motor 4 is installed at the top of the body 1, the output end of the washing motor 4 extend in the body 1 and with institute
State the top connection of the agitating shaft 5 in body 1.Guide rail 8 is installed on 1 intracavity sidewall of body, in 1 bottom of body
Two side positions are equipped with guide rail motor 12, and the guide rail motor 12 is connect with the guide rail 8, move for controlling the guide rail 8.
Mixing drum 10 is slidably fitted on the guide rail 8；Limited block 9 is installed in 8 end of guide rail, for limiting the stirring
The movement of cylinder 10；In the present invention, the length of the guide rail 8 is greater than 2 times of 10 height of mixing drum.The agitating shaft
5 bottom extends in the mixing drum 10,10 upper end opening of mixing drum, and connects with the feed hopper 2 and feed liquor bucket 3
It is logical；The agitating shaft 5 is equipped with the stirring rod 6 of several levels, has been evenly arranged several first magnetic on each stirring rod 6
Stick 7.In the present invention, the quantity of the stirring rod 6 is 3, and is arranged for uniform intervals；On each stirring rod 6
7 quantity of the first bar magnet be 6, and be evenly arranged in 6 downside of the stirring rod.
It is equipped with pickling motor 13 in the bottom centre position of the mixing drum 10, the output end of the pickling motor 13 extends
It is connect in the body 1 and with the pickling axis 14 in the body 1；The upper half of the pickling axis 14 is to accommodate central axis
20, the diameter of section for accommodating central axis 20 is less than the 14 lower half section of pickling axis, to form multi-diameter shaft.Described
It accommodates and is equipped with several pickling stirring rods 15 on the outside of central axis 20, the pickling stirring rod 15 is hinged on the multi-diameter shaft to be formed
At ladder, the pickling stirring rod 15 is connect by spring (not shown) with the receiving central axis 20；It is practical new at this
In type, the quantity of the pickling stirring rod 15 is at least 4 or more.Several second are additionally provided on the upside of the pickling stirring rod 15
Bar magnet 21, position corresponding with second bar magnet 21 is equipped with holding tank on 20 lateral surface of receiving central axis.Certainly
In right situation, i.e., the described spring is under natural length, and the pickling stirring rod 15 and the receiving central axis 20 are angled
It is distributed on 20 periphery of receiving central axis, and can be rotated with this state with the pickling axis 14.It is stirred in the pickling
The end of bar 15 is equipped with pickling block 17.
In the present invention, the quantity of second bar magnet 21 is to be uniformly distributed 3 on the every pickling stirring rod 15
~6 the second bar magnets 21.
In the present invention, the pickling stirring rod 15 is with the angle for accommodating central axis 20 in natural conditions
30~60 °.
Sealing plate 11 is equipped on 10 bottom centre position of mixing drum, the sealing plate 11 is hollow ring structure,
The pickling axis 14 passes through the sealing plate 11, and forms sealing structure；It glides on the guide rail 8 in the mixing drum 10
When dynamic, the sealing plate 11 slides up and down on the pickling axis 14.The sealing plate 11 slides into the rank of the pickling axis 14
At ladder when lower section, the pickling stirring rod 15 accommodated on 20 periphery of central axis scatters under the elastic force effect of spring, from
And the stirring structure of back taper is formed, the utility model is pickling state at this time.In 11 upward sliding of sealing plate to described
When pickling 15 terminal position of stirring rod, the pickling stirring rod 15 collects under the active force of the sealing plate 11, by described
Pickling block 17 stops, to form complete pickling axis 14, the utility model is washing state at this time.
It is equipped with several strainers on the side surface circumference of 10 bottom position of mixing drum, is in washing shape in the utility model
When state, leakage fluid dram 22 is equipped on the position that 1 side wall of body is located at the 10 side strainer of mixing drum, for being passed through drain
Pipe；When the utility model is in pickling state, it is equipped with if being located at 10 entry position of mixing drum in 1 side wall of body
Dry acid-filling mouth 23, for being passed through acid filling pipe；It is equipped on the position that 1 side wall of body is located at the 10 side strainer of mixing drum
Acid discharge mouth 24, for being passed through acid tube.
Bottom is provided with the oblique filter plate 19 of filter opening in the body 1, and the radius of this filter opening is less than the radius of quartz sand,
It is also equipped with through slot in 1 bottom of body, is collected by the through slot and is removed by the quartz sand exclusion device of the utility model
Quartz sand after miscellaneous.
In the present invention, the backplate 18 of annular is equipped with below the sealing plate 11, the diameter of the backplate 18 is big
In the diameter of the sealing plate 11, for keeping the position of the sealing plate 11 in 11 slide downward of sealing plate, thus
Keep the sealing state of the mixing drum 10.
It is equipped with sealing baffle 16 on the position concordant with the limited block 9 of the guide rail 8 of 14 lower part of pickling axis, is used for
Further to the protection of 10 bottom of the sealing plate 11 and the mixing drum.
In the present invention, the guide rail motor 12 and the pickling motor 13 are installed in electric motor protecting shell (in figure
It is not shown) in.
The working principle of the utility model is as follows:
The position of initial stage, 10 bottom of mixing drum are located at 14 terminal position of pickling axis；Pass through feed hopper 2 first to body
Quartz sand is poured into 1, quartz sand enters in the mixing drum 10 in body 1, then adds by feed liquor bucket 3 into mixing drum 10
Water mixes quartz sand with water, opens motor 4, and agitating shaft 5 is driven to rotate, so that stirring rod 6 rotates, to make quartz
Sand is uniformly mixed with water, and mixing time is 2 hours, to the impurity in quartz sand be cleaned up, the volume of quartz sand and water
Than for 1:3, meanwhile, the first bar magnet 7 on stirring rod 6 carries out first time magnetic separation to quartz sand.Waste water passes through company after over cleaning
The leakage fluid dram 22 of logical drain pipe is discharged, and is in closed state when drain pipe works normally, and when effluent opens it, due to stirring
The radius of strainer on the side surface circumference of 10 bottom positions of cylinder is less than the radius of quartz sand, therefore quartz sand can be trapped in and be stirred
It mixes in cylinder 10.
Rear rail motor 12 open, by guide rail 8 drive mixing drum 10 move downward, until sealing plate 11 slides into pickling
At the ladder of axis 14 when lower section, 10 bottom of mixing drum is located at 9 position of limited block of 8 bottom of guide rail at this time, accommodates outside central axis 20
Pickling stirring rod 15 on week scatters under the elastic force effect of spring, forms the stirring structure of back taper；Pass through 1 side wall position of body
Acid-filling mouth 23 at 10 entry position of mixing drum injects concentrated acid solution, and the stirring structure of back taper is controlled by pickling motor 13
Stirring forms whirlpool, comes into full contact with concentrated acid with quartz sand to stir the concentrated acid inside mixing drum 10, realizes to quartz sand
Pickling；The volume ratio of quartz sand and acid solution is 1:1.5, meanwhile, the second bar magnet 21 on pickling stirring rod 15 to quartz sand into
Second of magnetic separation of row, pickling time are 2 hours, and the concentrated acid after overpickling is discharged by the acid discharge mouth 24 of connection acid tube, row
It is in closed state when sour mouth 24 works normally, opens it when arranging concentrated acid, due to the side surface circumference of 10 bottom position of mixing drum
On the radius of strainer be less than the radius of quartz sand, therefore quartz sand can be trapped in mixing drum 10.
And then by guide rail motor 12 work, by guide rail 8 drive mixing drum 10 move upwards, sealing plate 11 to
On when sliding into pickling 14 terminal position of agitating shaft, the pickling stirring rod 15 collects under the active force of the sealing plate 11,
Stopped by the pickling block 17, to form complete pickling axis 14, at this point, mixing drum 10 restores the initial stage, then is led to
It crosses above-mentioned water-washing step to be washed, the time washed again is 2 hours, will be remaining dense in mixing drum 10 and on quartz sand
Pickling removes.
Finally, mixing drum 10 continues up under the control of guide rail motor 12, at this time due to the resistance of pickling block 17
Gear, sealing plate 11 and 10 bottom of mixing drum are detached from, to form quartz sand exit passageway, institute in 10 bottom centre position of mixing drum
Quartz sand whereabouts is stated, is filtered by inclined oblique filter plate 19, is collected after removal of impurities in the through slot installed by 1 bottom of body
Quartz sand.
Preferred embodiments of the present invention are described in detail above, but the utility model is not limited to above-mentioned implementation
Detail in mode can carry out the technical solution of the utility model in the range of the technology design of the utility model
A variety of equivalents (such as quantity, shape, position), these equivalents belong to the protection of the utility model.
Claims (10)
1. a kind of quartz sand exclusion device, including body (1), the left and right sides at the top of the body (1) be separately installed with into
Hopper (2) and feed liquor bucket (3) are equipped with washing motor (4), the output of washing motor (4) at the top of the body (1)
End extends in the body (1) and connect with the top of the agitating shaft (5) in the body (1)；It is characterized by: described
Guide rail (8) are installed on body (1) intracavity sidewall, are equipped on the body (1) two sides of the bottom position for controlling described lead
The guide rail motor (12) of rail (8) movement, the guide rail motor (12) connect with the guide rail (8)；It is slided on the guide rail (8)
Mixing drum (10) are installed；The limited block for limiting the mixing drum (10) movement is installed in the guide rail (8) end
(9)；The length of the guide rail (8) is 2.5~4 times of the mixing drum (10) height；
The bottom of the agitating shaft (5) extends in the mixing drum (10), mixing drum (10) upper end opening, and with it is described
Feed hopper (2) is connected to feed liquor bucket (3)；The agitating shaft (5) is equipped with the stirring rod (6) of several levels；
Pickling motor (13) are equipped in the bottom centre position of the mixing drum (10), the output end of the pickling motor (13) prolongs
It extends in the body (1) and is connect with the pickling axis (14) in the body (1)；The upper half of the pickling axis (14) is to hold
It receives central axis (20), the diameter of section for accommodating central axis (20) is less than pickling axis (14) the lower half section, thus shape
At multi-diameter shaft；Several pickling stirring rods (15), pickling stirring rod (15) hinge are equipped on the outside of the receiving central axis (20)
It connects at the ladder of the multi-diameter shaft of formation, the pickling stirring rod (15) is connected by spring and the receiving central axis (20)
It connects, the spring is the pickling stirring rod (15) and the angled distribution of the receiving central axis (20) under natural length
On receiving central axis (20) periphery, and it can be rotated with this state with the pickling axis (14)；It is stirred in the pickling
The end of bar (15) is equipped with pickling block (17)；
Sealing plate (11) are equipped on the mixing drum (10) bottom centre position, the sealing plate (11) is hollow ring knot
Structure, the pickling axis (14) passes through the sealing plate (11), and forms sealing structure；It is led in the mixing drum (10) along described
When rail (8) slides up and down, the sealing plate (11) slides up and down on the pickling axis (14)；The sealing plate (11) slides into
When limited block (9) position of guide rail (8) end, the pickling stirring rod (15) accommodated on central axis (20) periphery
It scatters under the elastic force effect of spring, forms the stirring structure of back taper, the mixing drum (10) is in pickling position at this time；In
When sealing plate (11) upward sliding to pickling stirring rod (15) terminal position, the pickling stirring rod (15) is described
It is collected under the active force of sealing plate (11), is stopped by the pickling block (17), form complete pickling axis (14), at this time institute
It states mixing drum (10) and is in washing position；
Several strainers are equipped on the side surface circumference of the mixing drum (10) bottom position；It is equipped on the body (1) side wall
Several leakage fluid drams (22) for being passed through drain pipe, several acid-filling mouths (23) for being passed through acid filling pipe and several for being passed through
The acid discharge mouth (24) of acid tube；The position of the leakage fluid dram (22) is the side filter when mixing drum (10) are in washing position
Net position；The position of the acid-filling mouth (23) is at the entry position when mixing drum (10) are in pickling position；The row
The position of sour mouth (24) is the side screen location when mixing drum (10) are in pickling position；
It is provided with the oblique filter plate (19) of filter opening in the body (1) interior bottom, the radius of the filter opening of the oblique filter plate (19) is small
In the radius of quartz sand；It is also equipped with through slot in the body (1) bottom, the stone after removal of impurities is collected by the through slot
Sand.
2. quartz sand exclusion device according to claim 1, it is characterised in that: the quantity of the stirring rod (6) is 3~5,
And it is arranged for uniform intervals.
3. quartz sand exclusion device according to claim 1, it is characterised in that: the uniform cloth on each stirring rod (6)
It is equipped with several first bar magnets (7)；The first bar magnet (7) quantity on each stirring rod (6) is 6~8, and is evenly arranged in
On the downside of the stirring rod (6).
4. quartz sand exclusion device according to claim 1, it is characterised in that: the quantity of the pickling stirring rod (15) is 4
~8.
5. quartz sand exclusion device according to claim 1, it is characterised in that: be equipped on the upside of the pickling stirring rod (15)
Several second bar magnets (21), position corresponding with the second bar magnet (21) is set on receiving central axis (20) lateral surface
There is holding tank.
6. quartz sand exclusion device according to claim 5, it is characterised in that: the quantity of second bar magnet (21) is every
3~6 the second bar magnets (21) are uniformly distributed on the pickling stirring rod (15).
7. quartz sand exclusion device according to claim 1, it is characterised in that: the pickling stirring rod (15) is in natural situation
The lower angle with receiving central axis (20) is 30~60 °.
8. quartz sand exclusion device according to claim 1, it is characterised in that: be equipped with annular below the sealing plate (11)
Backplate (18)；The diameter of the backplate (18) is greater than the diameter of the sealing plate (11).
9. quartz sand exclusion device according to claim 1, it is characterised in that: led in pickling axis (14) lower part with described
The concordant position of the limited block (9) of rail (8) is equipped with sealing baffle (16).
10. quartz sand exclusion device according to claim 1, it is characterised in that: the guide rail motor (12) and the pickling
Motor (13) is installed in electric motor protecting shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821595817.8U CN209583646U (en) | 2018-09-29 | 2018-09-29 | A kind of quartz sand exclusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821595817.8U CN209583646U (en) | 2018-09-29 | 2018-09-29 | A kind of quartz sand exclusion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209583646U true CN209583646U (en) | 2019-11-05 |
Family
ID=68373376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821595817.8U Expired - Fee Related CN209583646U (en) | 2018-09-29 | 2018-09-29 | A kind of quartz sand exclusion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209583646U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109110768A (en) * | 2018-09-29 | 2019-01-01 | 徐州赛诺石英有限公司 | A kind of quartz sand exclusion device |
| CN111334091A (en) * | 2020-03-07 | 2020-06-26 | 张云鹏 | Quartz sand modification method |
-
2018
- 2018-09-29 CN CN201821595817.8U patent/CN209583646U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109110768A (en) * | 2018-09-29 | 2019-01-01 | 徐州赛诺石英有限公司 | A kind of quartz sand exclusion device |
| CN109110768B (en) * | 2018-09-29 | 2023-10-24 | 徐州赛诺石英有限公司 | Quartz sand impurity removing device |
| CN111334091A (en) * | 2020-03-07 | 2020-06-26 | 张云鹏 | Quartz sand modification method |
| CN111334091B (en) * | 2020-03-07 | 2021-08-03 | 廉江市东兴硅质材料有限公司 | Quartz sand modification method |
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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: 20191105 Termination date: 20200929 |