CN109181552A - Novel rare-earth polishing powder and preparation method thereof - Google Patents
Novel rare-earth polishing powder and preparation method thereof Download PDFInfo
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- CN109181552A CN109181552A CN201811103772.2A CN201811103772A CN109181552A CN 109181552 A CN109181552 A CN 109181552A CN 201811103772 A CN201811103772 A CN 201811103772A CN 109181552 A CN109181552 A CN 109181552A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09G—POLISHING COMPOSITIONS; SKI WAXES
- C09G1/00—Polishing compositions
- C09G1/02—Polishing compositions containing abrasives or grinding agents
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Abstract
The present invention provides a kind of novel rare-earth polishing powder and preparation method thereof.A kind of preparation method of novel rare-earth polishing powder includes the following steps: Step 1: raw material preparation；Step 2: sizing mixing, being fluorinated, being dehydrated；Step 3: drying；Step 4: wet ball grinding；Step 5: material by wet type mixing；Step 6: dry and high-temperature calcination；Step 7: airflow milling.Product after drying is carried out wet grinding glomeration by a kind of novel rare-earth polishing powder provided by the invention and preparation method thereof, then on the product for being coated to conventional process flow, it is calcined again, product after burning in this way is essentially all sub- spherical, after airflow milling crushes, polishing powder produced does not have acute angle, and shape is all sub- spherical, scuffing will not be generated to glass, quality has arrived great promotion.
Description
Technical field
The invention belongs to polishing powder production technical fields more particularly to a kind of novel rare-earth polishing powder and preparation method thereof.
Background technique
The process of preparing for the polishing powder that tradition uses is simple, but has a great defect, which is used in low
There is no problem in the field at end, such as glass edging；But if being used in high-end field, as optical glass will generate a large amount of draw
Wound.This be mainly caused by raw material be the defect of raw material itself, airflow milling allows irregular powder pair by high pressure gas
It hits, the little particle powder various shape generated in this way has, and most of particle has acute angle, and acute angle is directly generated on glass and drawn
Wound, causes product unqualified.
Summary of the invention
It cannot be used for high-end field to solve existing polishing powder, powder has acute angle, is easy to generate scuffing on glass, lead
Cause the underproof technical problem of product, the present invention provide it is a kind of can be used for high-end field, powder does not have acute angle, it is not easy in glass
Scuffing is generated on glass, does not lead to underproof novel rare-earth polishing powder of product and preparation method thereof.
The polishing powder of novel rare-earth polishing powder provided by the invention is sub- spherical polishing powder.
In a kind of preferred embodiment of novel rare-earth polishing powder provided by the invention, the polishing powder particle size distribution is
D50=1.3 ± 0.2um.
The preparation method of novel rare-earth polishing powder provided by the invention, comprising the following steps:
Step 1: raw material preparation: preparing lanthanum cerium carbonated rare earth, prepare the polishing powder of 1.5 ± 0.2um using conventional method；
Step 2: sizing mixing, being fluorinated, being dehydrated: lanthanum cerium carbonated rare earth addition water being sized mixing, hydrofluoric acid is added, be fluorinated anti-
It answers, then is dehydrated, obtain fluorine carbonated rare earth；
Step 3: drying: fluorine carbonated rare earth is dried at a temperature of 430 DEG C；
Step 4: wet ball grinding: pure water and hydrofluoric acid is added in the fluorine carbonated rare earth of drying, carries out wet ball grinding, is continued
Ball milling to powder center particle size distribution be D50=0.5 ± 0.2um；
Step 5: material by wet type mixing: the polishing powder of 1.5 ± 0.2um of pure water and conventional method preparation is added, carries out mixing；
Step 6: dry and high-temperature calcination: being first spray-dried high-temperature calcination again；
Step 7: airflow milling: the fluorine lanthanum carbonate cerium product of acquisition being carried out air-flow crushing, obtains powder center size distribution
Range is D50The rare earth powder of=1.3 ± 0.2um.
In a kind of preferred embodiment of preparation method of novel rare-earth polishing powder provided by the invention, in the step 1,
The conventional method includes the following steps:
Step 1 one, raw material preparation: prepare lanthanum cerium carbonated rare earth；
Step 1 two sizes mixing, is fluorinated, being dehydrated: lanthanum cerium carbonated rare earth addition water being sized mixing, hydrofluoric acid is added, is fluorinated
Reaction, then be dehydrated, obtain fluorine carbonated rare earth；
Step 1 three, calcining: fluorine carbonated rare earth is calcined at 1020 DEG C；
Step 1 four, airflow milling: the fluorine rare earth oxide obtained after calcining is subjected to airflow milling, by product center granularity D50Control
System obtains required polishing powder in 1.5 ± 0.2um.
In a kind of preferred embodiment of preparation method of novel rare-earth polishing powder provided by the invention, in the step 2,
The waste water that the dehydration obtains is for the use of sizing mixing.
In a kind of preferred embodiment of preparation method of novel rare-earth polishing powder provided by the invention, in the step 3,
The dehydration is centrifugal dehydration.
In a kind of preferred embodiment of preparation method of novel rare-earth polishing powder provided by the invention, in the step 4,
In wet ball grinding, the weight ratio of fluorine carbonated rare earth, pure water and hydrofluoric acid is 50:50:1.
In a kind of preferred embodiment of preparation method of novel rare-earth polishing powder provided by the invention, have in the step 5
Body are as follows: the good slurry of ball milling is transferred in agitator tank, under stirring, with slurry, pure water and 1.5 ± 0.2um polishing powder
Weight ratio be 10:7:5 ratio, be added pure water and 1.5 ± 0.2um polishing powder, a hour is sufficiently stirred.
In a kind of preferred embodiment of preparation method of novel rare-earth polishing powder provided by the invention, in the step 6,
In drying process with atomizing, gas inlet temperature is 360 degrees Celsius, and outlet temperature is 100 degrees Celsius.
In a kind of preferred embodiment of preparation method of novel rare-earth polishing powder provided by the invention, in the step 6,
The high-temperature calcination temperature is 1070 DEG C, and the high-temperature calcination time is 5 hours.
Novel rare-earth polishing powder of the invention and preparation method thereof has the following beneficial effects:
Add when using polishing powder from rare earth cladding carbonated rare earth fluoride technology, polishing powder from rare earth secondary clacining technology, cladding
Add the technology dried after hydrofluoric acid and cladding using spray drying technology, make product quality has arrived great promotion, can use
In high-end field, powder does not have acute angle, it is not easy to generate scuffing on glass, not cause product unqualified.Wet process is carried out to grind
It wears into spherical, then on the product for being coated to conventional process flow, then is calcined, the product after burning in this way is essentially all
Sub- spherical shape, after airflow milling crushes, polishing powder produced does not have acute angle, and shape is all sub- spherical shape, will not be to glass
Scuffing is generated, another benefit is, with the use of polishing powder, after surface coating layer is gradually worn away, the core of the inside
Acute angle is also ground off, and core also wears into sub- spherical shape, can be continued to use, and the hardness for calcining the core for being twice increases, the longevity
Life lengthens.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, in which:
Fig. 1 is a kind of process flow chart of embodiment of preparation method of novel rare-earth polishing powder provided by the invention；
The conventional method preparation 1.5 of the step of Fig. 2 is the preparation method of novel rare-earth polishing powder shown in FIG. 1 one ±
A kind of process flow chart of embodiment of the polishing powder of 0.2um.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiments are merely a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Polishing powder described in the novel rare-earth polishing powder 1 is sub- spherical polishing powder.The polishing powder particle size distribution is
D50=1.3 ± 0.2um.
Referring to Fig. 1, being a kind of process flow of embodiment of preparation method of novel rare-earth polishing powder provided by the invention
Figure.
The preparation method S1 of novel rare-earth polishing powder provided by the invention, comprising the following steps:
Step S11, raw material preparation: preparing lanthanum cerium carbonated rare earth, prepares the polishing powder of 1.5 ± 0.2um using conventional method；
Step S12, it sizes mixing, be fluorinated, be dehydrated: lanthanum cerium carbonated rare earth addition water being sized mixing, hydrofluoric acid is added, be fluorinated anti-
It answers, then is dehydrated, obtain fluorine carbonated rare earth；The waste water that the dehydration obtains is for the use of sizing mixing；
Step S13, it dries: fluorine carbonated rare earth is dried at a temperature of 430 DEG C；
Step S14, wet ball grinding: pure water and hydrofluoric acid is added in the fluorine carbonated rare earth of drying, carries out wet ball grinding, is continued
Ball milling to powder center particle size distribution be D50=0.5 ± 0.2um；In wet ball grinding, fluorine carbonated rare earth, pure water and hydrofluoric acid
Weight ratio be 50:50:1.
Step S15, material by wet type mixing: the polishing powder of 1.5 ± 0.2um of pure water and conventional method preparation is added, carries out mixing；
Specifically: the good slurry of ball milling is transferred in agitator tank, under stirring, with the weight of slurry, pure water and 1.5um polishing powder
Amount is added the polishing powder of pure water and 1.5um, a hour is sufficiently stirred than the ratio for being 10:7:5.
Step S16, drying and high-temperature calcination: first it is spray-dried high-temperature calcination again；In drying process with atomizing, inlet gas body temperature
Degree is 360 degrees Celsius, and outlet temperature is 100 degrees Celsius；The high-temperature calcination temperature is 1070 DEG C, and the high-temperature calcination time is 5
Hour.
Step S17, airflow milling: the fluorine lanthanum carbonate cerium product of acquisition is subjected to air-flow crushing, obtains powder center granularity point
Cloth range is D50The rare earth powder of=1.3 ± 0.2um.
The conventional method preparation 1.5 of the step of Fig. 2 is the preparation method of novel rare-earth polishing powder shown in FIG. 1 one ±
A kind of process flow chart of embodiment of the polishing powder of 0.2um.
The polishing powder S11 that the conventional method prepares 1.5 ± 0.2um includes the following steps:
Step S111, raw material preparation: prepare lanthanum cerium carbonated rare earth；
Step S112, it sizes mixing, be fluorinated, be dehydrated: lanthanum cerium carbonated rare earth addition water being sized mixing, hydrofluoric acid is added, is fluorinated
Reaction, then be dehydrated, obtain fluorine carbonated rare earth；
Step S113, it calcines: fluorine carbonated rare earth being calcined at 1020 DEG C；
Step S114, airflow milling: the fluorine rare earth oxide obtained after calcining is subjected to airflow milling, by product center granularity D50Control
System obtains required polishing powder in 1.5 ± 0.2um.
Novel rare-earth polishing powder of the invention and preparation method thereof S1 has the following beneficial effects:
Add when using polishing powder from rare earth cladding carbonated rare earth fluoride technology, polishing powder from rare earth secondary clacining technology, cladding
Add the technology dried after hydrofluoric acid and cladding using spray drying technology, make product quality has arrived great promotion, can use
In high-end field, powder does not have acute angle, it is not easy to generate scuffing on glass, not cause product unqualified.Wet process is carried out to grind
It wears into spherical, then on the product for being coated to conventional process flow, then is calcined, the product after burning in this way is essentially all
Sub- spherical shape, after airflow milling crushes, polishing powder produced does not have acute angle, and shape is all sub- spherical shape, will not be to glass
Scuffing is generated, another benefit is, with the use of polishing powder, after surface coating layer is gradually worn away, the core of the inside
Acute angle is also ground off, and core also wears into sub- spherical shape, can be continued to use, and the hardness for calcining the core for being twice increases, the longevity
Life lengthens.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of novel rare-earth polishing powder, which is characterized in that the polishing powder is sub- spherical polishing powder.
2. the preparation method of novel rare-earth polishing powder according to claim 1, which is characterized in that the polishing Powder Particle Size point
Cloth range is D50=1.3 ± 0.2um.
3. a kind of preparation method of novel rare-earth polishing powder described in claim 1, which comprises the following steps:
Step 1: raw material preparation: preparing lanthanum cerium carbonated rare earth, prepare the polishing powder of 1.5 ± 0.2um using conventional method；
Step 2: sizing mixing, being fluorinated, being dehydrated: lanthanum cerium carbonated rare earth addition water is sized mixing, hydrofluoric acid is added, carries out fluorination reaction, then
It is dehydrated, obtains fluorine carbonated rare earth；
Step 3: drying: fluorine carbonated rare earth is dried at a temperature of 430 DEG C；
Step 4: wet ball grinding: pure water and hydrofluoric acid is added in the fluorine carbonated rare earth of drying, carries out wet ball grinding, continues ball milling
It is D to powder center particle size distribution50=0.5 ± 0.2um；
Step 5: material by wet type mixing: the polishing powder of 1.5 ± 0.2um of pure water and conventional method preparation is added, carries out mixing；
Step 6: dry and high-temperature calcination: being first spray-dried high-temperature calcination again；
Step 7: airflow milling: the fluorine lanthanum carbonate cerium product of acquisition being carried out air-flow crushing, obtains powder center particle size distribution
For D50The rare earth powder of=1.3 ± 0.2um.
4. the preparation method of novel rare-earth polishing powder according to claim 3, which is characterized in that in the step 1, institute
Conventional method is stated to include the following steps:
Step 1 one, raw material preparation: prepare lanthanum cerium carbonated rare earth；
Step 1 two sizes mixing, is fluorinated, being dehydrated: lanthanum cerium carbonated rare earth addition water sized mixing, hydrofluoric acid is added, carries out fluorination reaction,
It is dehydrated again, obtains fluorine carbonated rare earth；
Step 1 three, calcining: fluorine carbonated rare earth is calcined at 1020 DEG C；
Step 1 four, airflow milling: the fluorine rare earth oxide obtained after calcining is subjected to airflow milling, by product center granularity D50Control exists
1.5 ± 0.2um obtains required polishing powder.
5. the preparation method of novel rare-earth polishing powder according to claim 3, which is characterized in that in the step 2, institute
It states the waste water that dehydration obtains and is used for the use of sizing mixing.
6. the preparation method of novel rare-earth polishing powder according to claim 3, which is characterized in that in the step 3, institute
Stating dehydration is centrifugal dehydration.
7. the preparation method of novel rare-earth polishing powder according to claim 3, which is characterized in that wet in the step 4
In method ball milling, the weight ratio of fluorine carbonated rare earth, pure water and hydrofluoric acid is 50:50:1.
8. the preparation method of novel rare-earth polishing powder according to claim 3, which is characterized in that specific in the step 5
Are as follows: the good slurry of ball milling is transferred in agitator tank, under stirring, with slurry, pure water and 1.5 ± 0.2um polishing powder
Weight ratio is the ratio of 10:7:5, and the polishing powder of pure water and 1.5 ± 0.2um is added, a hour is sufficiently stirred.
9. the preparation method of novel rare-earth polishing powder according to claim 3, which is characterized in that in the step 6, spray
In mist drying process, gas inlet temperature is 360 degrees Celsius, and outlet temperature is 100 degrees Celsius.
10. the preparation method of novel rare-earth polishing powder according to claim 3, which is characterized in that in the step 6, institute
Stating high-temperature calcination temperature is 1070 DEG C, and the high-temperature calcination time is 5 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811103772.2A CN109181552A (en) | 2018-09-20 | 2018-09-20 | Novel rare-earth polishing powder and preparation method thereof |
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| CN201811103772.2A CN109181552A (en) | 2018-09-20 | 2018-09-20 | Novel rare-earth polishing powder and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112724839A (en) * | 2021-01-21 | 2021-04-30 | 包头华明高纳稀土新材料有限公司 | System and method for preparing rare earth polishing powder |
| CN115678436A (en) * | 2022-11-04 | 2023-02-03 | 包头市科蒙新材料开发有限责任公司 | Preparation method of novel cerium-rich rare earth polishing powder |
-
2018
- 2018-09-20 CN CN201811103772.2A patent/CN109181552A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112724839A (en) * | 2021-01-21 | 2021-04-30 | 包头华明高纳稀土新材料有限公司 | System and method for preparing rare earth polishing powder |
| CN115678436A (en) * | 2022-11-04 | 2023-02-03 | 包头市科蒙新材料开发有限责任公司 | Preparation method of novel cerium-rich rare earth polishing powder |
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Application publication date: 20190111 |
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