CN102031063A - Rare earth polishing powder and production method thereof - Google Patents
Rare earth polishing powder and production method thereof Download PDFInfo
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- CN102031063A CN102031063A CN2009101797481A CN200910179748A CN102031063A CN 102031063 A CN102031063 A CN 102031063A CN 2009101797481 A CN2009101797481 A CN 2009101797481A CN 200910179748 A CN200910179748 A CN 200910179748A CN 102031063 A CN102031063 A CN 102031063A
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- rare earth
- polishing powder
- production method
- batch mixing
- pulverizer
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 53
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 52
- 238000005498 polishing Methods 0.000 title claims abstract description 46
- 239000000843 powder Substances 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 35
- 238000002156 mixing Methods 0.000 claims abstract description 41
- 238000001354 calcination Methods 0.000 claims abstract description 24
- 150000003863 ammonium salts Chemical class 0.000 claims abstract description 13
- 238000012856 packing Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 238000007873 sieving Methods 0.000 claims description 7
- 238000003556 assay Methods 0.000 claims description 5
- MIMUSZHMZBJBPO-UHFFFAOYSA-N 6-methoxy-8-nitroquinoline Chemical compound N1=CC=CC2=CC(OC)=CC([N+]([O-])=O)=C21 MIMUSZHMZBJBPO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052684 Cerium Inorganic materials 0.000 claims description 4
- LDDQLRUQCUTJBB-UHFFFAOYSA-N ammonium fluoride Chemical compound [NH4+].[F-] LDDQLRUQCUTJBB-UHFFFAOYSA-N 0.000 claims description 4
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 4
- GHLITDDQOMIBFS-UHFFFAOYSA-H cerium(3+);tricarbonate Chemical compound [Ce+3].[Ce+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O GHLITDDQOMIBFS-UHFFFAOYSA-H 0.000 claims description 4
- NZPIUJUFIFZSPW-UHFFFAOYSA-H lanthanum carbonate Chemical compound [La+3].[La+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O NZPIUJUFIFZSPW-UHFFFAOYSA-H 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229910052779 Neodymium Inorganic materials 0.000 claims description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 3
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 3
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000010298 pulverizing process Methods 0.000 abstract description 16
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000000725 suspension Substances 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract 2
- 238000012216 screening Methods 0.000 abstract 2
- 238000013329 compounding Methods 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- -1 rare earth carbonate Chemical class 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- 238000011109 contamination Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses rare earth polishing powder which is prepared by the following steps: mixing rare earth carbonate and ammonium salt in parts by weight into a compound, drying, pulverizing and screening, then adding into a suspended calciner for calcining to prepare clinker, and pulverizing by a pulverizer. The invention also discloses a production method of the rare earth polishing powder, which comprises the following steps: (1) compounding; (2) drying, pulverizing and screening; (3) calcining; and (4) pulverizing by gas flow. The invention has the advantages that raw materials are calcined in a suspension flowing state, so that heat and mass transfer is kept even, the polishing powder product has ideal and evenly distributed granularity, and the rare earth polishing powder has the advantages of high continuity degree, good product uniformity, high production efficiency, high yield, low cost, high gain and no pollution.
Description
Technical field:
The present invention relates to a kind of polishing powder and production method thereof, relate in particular to a kind of polishing powder from rare earth and production method thereof.
Background technology:
Polishing powder from rare earth is widely used in the polishing in fields such as LTD, computer chip, liquid-crystal display, flat-panel screens, optical lens, electrical equipment, colour TV negative ray x ray tube, with its polishing efficiency height, long service life, superiority applied widely, become current most popular precise polishing materials.
In recent years, along with the fast development of electronic information technology, for the demand of polishing powder in continuous increase.Along with the electronic product continuous advancement in technology, more and more higher to the requirement of the fineness of various product, polishing powder from rare earth also to be had higher requirement, this just impels manufacturer to improve constantly product specification, to adapt to the requirement of new technology product innovation.The rare earth application product that polishing powder from rare earth becomes is applied widely now, consumption is big, with high content of technology.
The shortcoming of existing polishing powder from rare earth production technology is inhomogeneous because of maturing temperature in traditional sinter process, and roasting is carried out under static state, and material conducts heat inhomogeneous, the poor stability of product.Can not continuity production cause the hardness of product inhomogeneous, the homogeneity of product be relatively poor.
Summary of the invention:
The object of the present invention is to provide a kind of employing " floated calcining " polishing powder technology to produce polishing powder, make raw material roasting under the suspension flow state, thereby make product reach ideal granularity and equally distributed a kind of polishing powder from rare earth.
Another object of the present invention is to provide a kind of and can makes polishing powder reach the ideal granularity and distribute uniformly, and the homogeneity of production technique serialization degree height, product is good, production efficiency is high, output is big, cost is low, the production method of product income height, free of contamination a kind of polishing powder from rare earth.
First purpose of the present invention is implemented by following technical scheme: a kind of polishing powder from rare earth,,, after oven dry, pulverizing and sieve, add floated calcining furnace and calcine by weight than being mixed into batch mixing by carbonated rare earth and ammonium salt, make grog, make after pulverizing by pulverizer.
Another object of the present invention is implemented by following technical scheme:
A kind of production method of polishing powder from rare earth may further comprise the steps:
(1) mixing material: carbonated rare earth and ammonium salt are by weight than being 1.9: the 0.001-0.05 mixed becomes batch mixing;
(2) dry, pulverize and sieve: described batch mixing after oven dry below 400 ℃, was pulverized the 100-200 mesh sieve;
(3) roasting: the batch mixing after will sieving joins calcining furnace, carries out floated calcining at 800--1000 ℃, makes grog;
(4) comminution by gas stream: described grog is crushed to the 0.1--20 micron with pulverizer, makes finished product, check back packing.
A kind of production method of polishing powder from rare earth, it also includes following steps: with step (4) gained finished product through the mixer thorough mixing, through packing after the assay was approved.
A kind of production method of polishing powder from rare earth, carbonated rare earth and ammonium salt are by weight than 1.9 in the described batch mixing: the 0.017-0.027 preparation.
A kind of production method of polishing powder from rare earth, described carbonated rare earth are taken from any of cerous carbonate, Phosbloc cerium or few neodymium carbonated rare earth.
A kind of production method of polishing powder from rare earth, described ammonium salt selects any of Neutral ammonium fluoride, ammonium bifluoride or ammonium sulfate.
Temperature is 850 when a kind of production method of polishing powder from rare earth, roasting in step (3)---in 950 ℃ of scopes.
A kind of production method of polishing powder from rare earth is crushed to the 0.3--10 micron at grog described in the step (4) with described pulverizer.
A kind of production method of polishing powder from rare earth can be selected from any of micronizer mill, mechanical crusher, ball mill pulverizer at pulverizer described in the step (4).
The invention has the advantages that: this polishing powder from rare earth production method, make raw material roasting under the suspension flow state, heat and mass keeps evenly, make product reach ideal granularity and distribution uniformly, serialization degree height, the homogeneity of product is good, the production efficiency height, output is big, cost is low, product income height, pollution-free.The polishing powder that adopts this method to produce, product grain alter is thought, is evenly distributed.
Embodiment:
The involved floated calcining of production method of the present invention is that the rotary kiln that adopts Zhengzhou City fixed star heavy equipment company limited or Henan grand basic mining machinery company limited to produce is implemented.
Embodiment 1:
A kind of polishing powder from rare earth,, is added floated calcining furnace and calcines after oven dry, pulverizing and sieve by weight than being mixed into batch mixing by carbonated rare earth and ammonium salt, makes grog, makes after pulverizing by pulverizer.
Its production method may further comprise the steps:
(1) mixing material: cerous carbonate and Neutral ammonium fluoride are by weight than being that 1.9: 0.001 mixed become batch mixing;
(2) dry, pulverize and sieve: described batch mixing after oven dry below 400 ℃, was pulverized 100 mesh sieves;
(3) roasting: the batch mixing after will sieving joins calcining furnace, carries out floated calcining at 800 ℃, makes grog;
(4) comminution by gas stream: described grog is crushed to 0.1 micron with micronizer mill, makes finished product.
Embodiment 2:
A kind of polishing powder from rare earth,, is added floated calcining furnace and calcines after oven dry, pulverizing and sieve by weight than being mixed into batch mixing by carbonated rare earth and ammonium salt, makes grog, makes after pulverizing by pulverizer.
Its production method may further comprise the steps:
(1) mixing material: Phosbloc cerium and Neutral ammonium fluoride are by weight than being that 1.9: 0.05 mixed become batch mixing;
(2) dry, pulverize and sieve: described batch mixing after oven dry below 400 ℃, was pulverized 200 mesh sieves;
(3) roasting: the batch mixing after will sieving joins calcining furnace, carries out floated calcining at 1000 ℃, makes grog;
(4) comminution by gas stream: described grog is crushed to 20 microns with mechanical crusher, makes finished product, check back packing.
(5) with step (4) gained finished product through the mixer thorough mixing, through packing after the assay was approved.
Embodiment 3:
A kind of polishing powder from rare earth,, is added floated calcining furnace and calcines after oven dry, pulverizing and sieve by weight than being mixed into batch mixing by carbonated rare earth and ammonium salt, makes grog, makes after pulverizing by pulverizer.
Its production method may further comprise the steps:
(1) mixing material: few neodymium carbonated rare earth and ammonium bifluoride are by weight than being that 1.9: 0.017 mixed become batch mixing;
(2) dry, pulverize and sieve: described batch mixing after oven dry below 400 ℃, was pulverized 150 mesh sieves;
(3) roasting: the batch mixing after will sieving joins calcining furnace, carries out floated calcining at 850 ℃, makes grog;
(4) comminution by gas stream: described grog is crushed to 0.3 micron with ball mill pulverizer, makes finished product, check back packing.
(5) with step (4) gained finished product through the mixer thorough mixing, through packing after the assay was approved.
Embodiment 4:
A kind of polishing powder from rare earth,, is added floated calcining furnace and calcines after oven dry, pulverizing and sieve by weight than being mixed into batch mixing by carbonated rare earth and ammonium salt, makes grog, makes after pulverizing by pulverizer.
Its production method may further comprise the steps:
(1) mixing material: cerous carbonate and ammonium sulfate are by weight than being that 1.9: 0.027 mixed become batch mixing;
(2) dry, pulverize and sieve: described batch mixing after oven dry below 400 ℃, was pulverized 170 mesh sieves;
(3) roasting: the batch mixing after will sieving joins calcining furnace, carries out floated calcining at 950 ℃, makes grog;
(4) comminution by gas stream: described grog is crushed to 10 microns with micronizer mill, makes finished product, check back packing.
(5) with step (4) gained finished product through the mixer thorough mixing, through packing after the assay was approved.
Embodiment 5:
A kind of polishing powder from rare earth,, is added floated calcining furnace and calcines after oven dry, pulverizing and sieve by weight than being mixed into batch mixing by carbonated rare earth and ammonium salt, makes grog, makes after pulverizing by pulverizer.
Its production method may further comprise the steps:
(1) mixing material: Phosbloc cerium and ammonium bifluoride are by weight than being that 1.9: 0.022 mixed become batch mixing;
(2) dry, pulverize and sieve: described batch mixing after oven dry below 400 ℃, was pulverized 120 mesh sieves;
(3) roasting: the batch mixing after will sieving joins calcining furnace, carries out floated calcining at 900 ℃, makes grog;
(4) comminution by gas stream: described grog is crushed to 5 microns with mechanical crusher, makes finished product, check back packing.
Claims (9)
1. the production method of a polishing powder from rare earth is characterized in that may further comprise the steps:
(1) mixing material: carbonated rare earth and ammonium salt are by weight than being 1.9: the 0.001-0.05 mixed becomes batch mixing;
(2) dry, pulverize and sieve: described batch mixing after oven dry below 400 ℃, was pulverized the 100-200 mesh sieve;
(3) roasting: the batch mixing after will sieving joins calcining furnace, carries out floated calcining at 800-1000 ℃, makes grog;
(4) comminution by gas stream: described grog is crushed to the 0.1-20 micron with pulverizer, makes finished product.
2. the production method of a kind of polishing powder from rare earth according to claim 1, it is characterized in that: it also includes following steps: step (4) gained finished product is mixed through mixer, through packing after the assay was approved.
3. the production method of a kind of polishing powder from rare earth according to claim 1 is characterized in that: carbonated rare earth and ammonium salt are by weight than 1.9 in the described batch mixing: the 0.017-0.027 preparation.
4. according to the production method of claim 1 or 3 described a kind of polishing powder from rare earth, it is characterized in that: described carbonated rare earth is taken from any of cerous carbonate, Phosbloc cerium or few neodymium carbonated rare earth.
5. according to the production method of claim 1 or 3 described a kind of polishing powder from rare earth, it is characterized in that: described ammonium salt selects any of Neutral ammonium fluoride, ammonium bifluoride or ammonium sulfate.
6. the production method of a kind of polishing powder from rare earth according to claim 1 is characterized in that: temperature is in 850-950 ℃ of scope during roasting in step (3).
7. the production method of a kind of polishing powder from rare earth according to claim 1 is characterized in that: be crushed to the 0.3-10 micron at grog described in the step (4) with described pulverizer.
8. according to the production method of claim 1 or 7 arbitrary described a kind of polishing powder from rare earth, it is characterized in that: can be selected from any of micronizer mill, mechanical crusher, ball mill pulverizer at pulverizer described in the step (4).
9. the polishing powder from rare earth that makes according to the described method of one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910179748.1A CN102031063B (en) | 2009-09-27 | 2009-09-27 | Rare earth polishing powder and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910179748.1A CN102031063B (en) | 2009-09-27 | 2009-09-27 | Rare earth polishing powder and production method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102031063A true CN102031063A (en) | 2011-04-27 |
| CN102031063B CN102031063B (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910179748.1A Expired - Fee Related CN102031063B (en) | 2009-09-27 | 2009-09-27 | Rare earth polishing powder and production method thereof |
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| Country | Link |
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| CN (1) | CN102031063B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585707A (en) * | 2012-02-28 | 2012-07-18 | 上海华明高纳稀土新材料有限公司 | Preparation method of cerium-based mixed rare earth polishing powder |
| CN102585708A (en) * | 2012-03-13 | 2012-07-18 | 上海华明高纳稀土新材料有限公司 | Rare earth polishing material and preparation method thereof |
| CN102965026A (en) * | 2012-11-12 | 2013-03-13 | 上海华明高纳稀土新材料有限公司 | Rare-earth polishing powder and preparation method thereof |
| CN104828853A (en) * | 2015-04-29 | 2015-08-12 | 甘肃稀土新材料股份有限公司 | Preparation method of spherical neodymium-low oxidized rare earth with medium specific surface area |
| CN105154662A (en) * | 2015-09-09 | 2015-12-16 | 四川卡森科技有限公司 | Rare earth mineral powder calcination decomposition systems and processes thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558172A (en) * | 2004-01-15 | 2004-12-29 | 太原理工大学 | Dynamic calcinator for inorganic material |
| CN1986415A (en) * | 2005-12-21 | 2007-06-27 | 北京方正稀土科技研究所有限公司 | Production process of white cerium oxide |
-
2009
- 2009-09-27 CN CN200910179748.1A patent/CN102031063B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558172A (en) * | 2004-01-15 | 2004-12-29 | 太原理工大学 | Dynamic calcinator for inorganic material |
| CN1986415A (en) * | 2005-12-21 | 2007-06-27 | 北京方正稀土科技研究所有限公司 | Production process of white cerium oxide |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585707A (en) * | 2012-02-28 | 2012-07-18 | 上海华明高纳稀土新材料有限公司 | Preparation method of cerium-based mixed rare earth polishing powder |
| CN102585708A (en) * | 2012-03-13 | 2012-07-18 | 上海华明高纳稀土新材料有限公司 | Rare earth polishing material and preparation method thereof |
| CN102965026A (en) * | 2012-11-12 | 2013-03-13 | 上海华明高纳稀土新材料有限公司 | Rare-earth polishing powder and preparation method thereof |
| CN104828853A (en) * | 2015-04-29 | 2015-08-12 | 甘肃稀土新材料股份有限公司 | Preparation method of spherical neodymium-low oxidized rare earth with medium specific surface area |
| CN105154662A (en) * | 2015-09-09 | 2015-12-16 | 四川卡森科技有限公司 | Rare earth mineral powder calcination decomposition systems and processes thereof |
| CN105154662B (en) * | 2015-09-09 | 2017-12-26 | 四川卡森科技有限公司 | Rare earth miberal powder Roasting Decomposition system and its technique |
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| Publication number | Publication date |
|---|---|
| CN102031063B (en) | 2014-02-19 |
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Granted publication date: 20140219 |