CN102031063B - Rare earth polishing powder and production method thereof - Google Patents
Rare earth polishing powder and production method thereof Download PDFInfo
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- CN102031063B CN102031063B CN200910179748.1A CN200910179748A CN102031063B CN 102031063 B CN102031063 B CN 102031063B CN 200910179748 A CN200910179748 A CN 200910179748A CN 102031063 B CN102031063 B CN 102031063B
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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 the fields such as LTD, computer chip, liquid-crystal display, flat-panel screens, optical lens, electrical equipment, colour TV negative ray x ray tube,, long service life high with its polishing efficiency, 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 continuous progress of electronic product 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 Products.Polishing powder from rare earth becomes applied widely, consumption rare earth application product large, with high content of technology now.
The shortcoming of existing polishing powder from rare earth production technology be in traditional sinter process because maturing temperature is inhomogeneous, roasting is carried out under static state, it is inhomogeneous that material conducts heat, the poor stability of product.Can not cause the hardness of product inhomogeneous by consecutive production, the homogeneity of product be 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 suspension flow state, thereby make product reach desirable granularity and equally distributed a kind of polishing powder from rare earth.
Another object of the present invention is to provide a kind of polishing powder that can make reach desirable granularity and distribute uniformly, and production technique serialization degree is high, the homogeneity of product is good, production efficiency is high, output is large, cost is low, product income is high, the production method of free of contamination a kind of polishing powder from rare earth.
First object of the present invention is implemented by following technical scheme: a kind of polishing powder from rare earth, by carbonated rare earth and ammonium salt, be mixed into by weight batch mixing, by after drying, pulverize and sieving, add suspending calcinator to calcine, make grog, after pulverizing by pulverizer, make.
Another object of the present invention is implemented by following technical scheme:
A production method for polishing powder from rare earth, comprises the following steps:
(1) mixing material: carbonated rare earth and ammonium salt are 1.9 by weight: 0.001-0.05 ratio is mixed into batch mixing;
(2) dry, pulverize and sieve: described batch mixing, after 400 ℃ of following oven dry, was pulverized to 100-200 mesh sieve;
(3) roasting: the batch mixing after sieving is joined to calcining furnace, carry out floated calcining at 800--1000 ℃, make grog;
(4) comminution by gas stream: described grog is crushed to 0.1--20 micron with pulverizer, makes finished product, packing after check.
A production method for polishing powder from rare earth, it also includes following steps: step (4) gained finished product is fully mixed through mixer, through packing after the assay was approved.
A production method for polishing powder from rare earth, in described batch mixing, carbonated rare earth and ammonium salt by weight 1.9: 0.017-0.027 preparation.
A production method for polishing powder from rare earth, described carbonated rare earth is taken from any of cerous carbonate, Phosbloc cerium or few neodymium carbonated rare earth.
A production method for polishing powder from rare earth, described ammonium salt selects any of Neutral ammonium fluoride, ammonium bifluoride or ammonium sulfate.
A production method for polishing powder from rare earth, during roasting in step (3), temperature is 850---within the scope of 950 ℃.
A production method for polishing powder from rare earth, is crushed to 0.3--10 micron at grog described in step (4) with described pulverizer.
A production method for polishing powder from rare earth, can be selected from any of micronizer mill, mechanical crusher, ball mill pulverizer at pulverizer described in step (4).
The invention has the advantages that: this polishing powder from rare earth production method, make raw material roasting under suspension flow state, heat and mass keeps evenly, make product reach desirable granularity and distribute uniformly, serialization degree is high, and the homogeneity of product is good, and production efficiency is high, output is large, cost is low, and product income is high, pollution-free.The polishing powder that adopts the 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 Hong Ji mining machinery company limited to produce is implemented.
Embodiment 1:
, by carbonated rare earth and ammonium salt, be mixed into by weight batch mixing, by after drying, pulverize and sieving, add suspending calcinator to calcine, make grog, after pulverizing by pulverizer, make.
Its production method comprises the following steps:
(1) mixing material: cerous carbonate and Neutral ammonium fluoride are that 1.9: 0.001 ratios are mixed into batch mixing by weight;
(2) dry, pulverize and sieve: described batch mixing, after 400 ℃ of following oven dry, was pulverized to 100 mesh sieves;
(3) roasting: the batch mixing after sieving is joined to calcining furnace, carry out floated calcining at 800 ℃, make grog;
(4) comminution by gas stream: described grog is crushed to 0.1 micron with micronizer mill, makes finished product.
Embodiment 2:
, by carbonated rare earth and ammonium salt, be mixed into by weight batch mixing, by after drying, pulverize and sieving, add suspending calcinator to calcine, make grog, after pulverizing by pulverizer, make.
Its production method comprises the following steps:
(1) mixing material: Phosbloc cerium and Neutral ammonium fluoride are that 1.9: 0.05 ratios are mixed into batch mixing by weight;
(2) dry, pulverize and sieve: described batch mixing, after 400 ℃ of following oven dry, was pulverized to 200 mesh sieves;
(3) roasting: the batch mixing after sieving is joined to calcining furnace, carry out floated calcining at 1000 ℃, make grog;
(4) comminution by gas stream: described grog is crushed to 20 microns with mechanical crusher, makes finished product, packing after check.
(5) step (4) gained finished product is fully mixed through mixer, through packing after the assay was approved.
Embodiment 3:
, by carbonated rare earth and ammonium salt, be mixed into by weight batch mixing, by after drying, pulverize and sieving, add suspending calcinator to calcine, make grog, after pulverizing by pulverizer, make.
Its production method comprises the following steps:
(1) mixing material: few neodymium carbonated rare earth and ammonium bifluoride are that 1.9: 0.017 ratios are mixed into batch mixing by weight;
(2) dry, pulverize and sieve: described batch mixing, after 400 ℃ of following oven dry, was pulverized to 150 mesh sieves;
(3) roasting: the batch mixing after sieving is joined to calcining furnace, carry out floated calcining at 850 ℃, make grog;
(4) comminution by gas stream: described grog is crushed to 0.3 micron with ball mill pulverizer, makes finished product, packing after check.
(5) step (4) gained finished product is fully mixed through mixer, through packing after the assay was approved.
Embodiment 4:
, by carbonated rare earth and ammonium salt, be mixed into by weight batch mixing, by after drying, pulverize and sieving, add suspending calcinator to calcine, make grog, after pulverizing by pulverizer, make.
Its production method comprises the following steps:
(1) mixing material: cerous carbonate and ammonium sulfate are that 1.9: 0.027 ratios are mixed into batch mixing by weight;
(2) dry, pulverize and sieve: described batch mixing, after 400 ℃ of following oven dry, was pulverized to 170 mesh sieves;
(3) roasting: the batch mixing after sieving is joined to calcining furnace, carry out floated calcining at 950 ℃, make grog;
(4) comminution by gas stream: described grog is crushed to 10 microns with micronizer mill, makes finished product, packing after check.
(5) step (4) gained finished product is fully mixed through mixer, through packing after the assay was approved.
Embodiment 5:
, by carbonated rare earth and ammonium salt, be mixed into by weight batch mixing, by after drying, pulverize and sieving, add suspending calcinator to calcine, make grog, after pulverizing by pulverizer, make.
Its production method comprises the following steps:
(1) mixing material: Phosbloc cerium and ammonium bifluoride are that 1.9: 0.022 ratios are mixed into batch mixing by weight;
(2) dry, pulverize and sieve: described batch mixing, after 400 ℃ of following oven dry, was pulverized to 120 mesh sieves;
(3) roasting: the batch mixing after sieving is joined to calcining furnace, carry out floated calcining at 900 ℃, make grog;
(4) comminution by gas stream: described grog is crushed to 5 microns with mechanical crusher, makes finished product, packing after check.
Claims (3)
1. a production method for polishing powder from rare earth, is characterized in that comprising the following steps:
(1) mixing material: carbonated rare earth and ammonium salt are by weight for 1.9:0.017-0.027 ratio is mixed into batch mixing;
(2) dry, pulverize and sieve: described batch mixing, after 400 ℃ of following oven dry, was pulverized to 100-200 mesh sieve;
(3) roasting: the batch mixing after sieving is joined to calcining furnace, carry out floated calcining at 800-1000 ℃, make grog;
(4) comminution by gas stream: described grog is crushed to 0.3-10 micron with micronizer mill, makes finished product;
Wherein, described carbonated rare earth is taken from any of cerous carbonate, Phosbloc cerium or few neodymium carbonated rare earth, and described ammonium salt is ammonium sulfate.
2. the production method of a kind of polishing powder from rare earth according to claim 1, 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: during roasting in step (3), temperature is within the scope of 850-950 ℃.
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| CN200910179748.1A CN102031063B (en) | 2009-09-27 | 2009-09-27 | Rare earth polishing powder and production method thereof |
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| CN200910179748.1A CN102031063B (en) | 2009-09-27 | 2009-09-27 | Rare earth polishing powder and production method thereof |
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| CN102031063B true CN102031063B (en) | 2014-02-19 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102585707B (en) * | 2012-02-28 | 2014-01-29 | 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 |
| CN104828853B (en) * | 2015-04-29 | 2016-09-14 | 甘肃稀土新材料股份有限公司 | A kind of preparation method of the few neodymium rare earth oxide of spherical middle specific surface area |
| 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 |
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 |
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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 |
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