CN105271353B - Calcination method for raising daily output of rare earth carbonate - Google Patents
Calcination method for raising daily output of rare earth carbonate Download PDFInfo
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- CN105271353B CN105271353B CN201510752506.2A CN201510752506A CN105271353B CN 105271353 B CN105271353 B CN 105271353B CN 201510752506 A CN201510752506 A CN 201510752506A CN 105271353 B CN105271353 B CN 105271353B
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- kiln
- rare earth
- roasting
- auger
- rotary kiln
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Abstract
The invention relates to a calcination method for raising daily output of rare earth carbonate and belongs to the field of material science. According to the calcination method, combination equipment of rotary kiln dynamic calcination equipment, a cyclone separator and cloth bag dust collection equipment is utilized, rare earth carbonate calcination can be shifted from original intermittent production to continuous production, production efficiency is improved, the production cycle is shortened, manpower consumption is decreased, dynamic calcination is achieved, and meanwhile energy consumption is lowed.
Description
Technical field
The present invention relates to a kind of method of roasting improving the carbonated rare earth daily output, belong to material science.
Background technology
The pretreatment that existing carbonated rare earth adopts before roasting be by entered carbon sink process after carbonated rare earth slip pass through
Scraper centrifugal machine carries out being dehydrated centrifuge dripping, the carbonated rare earth material being more dried.Such pretreatment exists asks as follows
Topic: 1. after low 3. low production efficiency 4. of big 2. production securities of manpower consumption is processed, humidity of materials is larger.
Existing rare earth roasting technology is mainly native bag kiln roasting and tunnel cave roasting.Native bag kiln roasting technology needs artificial
Carbonated rare earth is loaded in earthen bowl and is placed in roasting in native bag kiln, need after the completion of roasting to wait cooling, temperature drops to room temperature
Artificial reciprocating sieve filters, and packs after batch mixer batch mixing.Tunnel cave roasting technology is then that carbonated rare earth material is loaded earthen bowl, puts
To in push pedal, push pedal, through entering roasting in tunnel cave on tunnel cave track, needs after the completion of roasting to wait cooling, temperature drops to room
The artificial reciprocating sieve of temperature filters, and packs after batch mixer batch mixing.
Either native bag kiln roasting or tunnel cave roasting, is all with old-fashioned kiln roasting, and old-fashioned kiln belongs to static roasting, carries
For thermal source is uneven and roasting process needs preferential heating equipped with the earthen bowl of rare earth material, material is heated roasting by then earthen bowl heat absorption
Burn, because earthen bowl quantity uses the consumption of the larger energy larger, each roasting all can have substantial amounts of earthen bowl to damage.And exist and need
Very important person needs the big problem of the material of roasting, firing cycle length, low production efficiency, energy resource consumption for filling.
Content of the invention
The invention aims to solving that in existing carbonated rare earth roasting technique manpower consumption is excessive, rare earth oxide roasting
Burn excessive cycle, low production efficiency and the big problem of energy resource consumption, a kind of roasting side improving the carbonated rare earth daily output is provided
Method.
The purpose of the present invention is achieved through the following technical solutions.
A kind of method of roasting improving the carbonated rare earth daily output, specifically comprises the following steps that
The hot blast that step one, rare earth carbonate enter the drying providing in delivery pipe using air stove makes dry materials, and
In the case that air-introduced machine provides power, carbonated rare earth that gross mass is more than 70% pass through cyclone separator carry out separately, under
Material；
The material being carried away by the wind in step 2, separation process, through bag collection, then passes through under bag collection feed opening
Material；
Step 3, the described blanking of step one and step 2 gained is put in kiln hood receiving hopper, then pass through auger control
Frequency stable processed at the uniform velocity to feeding in rotary kiln；
Step 4, material carry out stirring by the size flight on barrel in kiln, and back-up ring control material is in rotary kiln
The speed run, the two can keep material uniformly slowly to carry out roasting in rotary kiln；Then expect container under kiln tail
In；
Step 5, in the case that air-introduced machine provides power, material in container is lowered the temperature through delivery pipe conveying simultaneously, then leads to
Cross cyclone separator and carry out separation, blanking, the material being carried away by the wind in separation process, through dust collection equipment, is then set by dust suction
Standby feed opening blanking；Obtain final rare earth oxide product.
Described rotary kiln end kiln tail gradient is 1 °；
A kind of device of the method for roasting realizing the raising carbonated rare earth daily output, including rotary kiln, cyclone separator, gathers dust
Equipment, air-introduced machine, auger, kiln hood receiving hopper, air stove, conveyance conduit；
One end of conveyance conduit is connected with cyclone separator, and the other end is connected with air stove by pipeline；Conveyance conduit
On be provided with auger, auger is connected with receiving hopper, and pending carbonated rare earth enters conveyance conduit by receiving hopper through auger；Air inducing
Machine, dust collection device and cyclone separator are sequentially connected by pipeline；Kiln hood receiving hopper is connected with auger；Auger is located at turn around kiln kiln
Head external-feeding in kiln, expect under material in container by rotary kiln；Container, cyclone separator, dust collection device and air inducing
Machine is sequentially connected by pipeline；
Beneficial effect
1st, the device and method of rotary kiln baking carbonated rare earth, material direct blanking after pneumatic conveying drying pretreatment are utilized
To rotary kiln, add the dynamic roasting of rotary kiln, kiln tail uses cyclone separator and bag collection equipment to collect product so that giving birth to
The carrying out of the enough Automatic continuous of production capacity.Kiln hood feed and kiln tail blanking be not required to very important person be take on solve old-fashioned kiln artificially take on kiln
The excessive problem of manpower consumption；Dynamically continuous roasting shortens the roasting time comparing old-fashioned kiln；Rotary kiln baking ability will
Higher than the roasting capacity of old-fashioned kiln, the daily output is equivalent to 2 times of the daily output of old-fashioned kiln；
2nd, rotary kiln belongs to dynamic roasting, and thermal source directly heats the cylinder material of rotation, and in kiln, constantly rolling can be equal
Even is heated, and the higher entropy of material confusion degree is higher, and endothermic effect is better, roasting directly carry out in the cylinder of kiln it is not necessary to
Using earthen bowl, cylinder is much smaller compared with earthen bowl heating surface area, so the dynamic roasting energy resource consumption of rotary kiln will be far smaller than old
The static roasting of formula kiln.
3rd, the present invention pneumatic conveying drying process, pneumatic conveying drying process can by the total amount of carbonated rare earth dry 70% with
On, and centrifuge dries carbonated rare earth and the total amount of carbonated rare earth can be dried to 45% about, the carbonic acid that air-flow is processed
Rare earth complies fully with the requirement that material enters rotary kiln
4th, centrifuge need manually to carry out to feed, scraper danger larger, it is artificial long-range electricity that air-flow processes carbonated rare earth
The safety of production is greatly improved by control case control
5th, centrifuge dripping carbonated rare earth material needs hand stock, scraper and manually carries out pack process, and pneumatic conveying drying
It is using cyclone separator and bag collection, material to be carried out with blanking to process that directly material is added in rotary kiln need not be artificial.
Brief description
Fig. 1 is rotary kiln and corollary equipment；
Fig. 2 is the process chart of the present invention.
Wherein, 1- rotary kiln, 2- cyclone separator, 3- dust collection device, 4- air-introduced machine, 5- auger, 6- kiln hood receiving hopper, 7-
Air stove, 8- conveyance conduit；
Specific embodiment
Embodiment 1
A kind of method of roasting improving the carbonated rare earth daily output, specifically comprises the following steps that
The hot blast that step one, praseodymium carbonate neodymium enter the drying providing in delivery pipe using air stove makes dry materials, and
In the case that air-introduced machine provides power, the praseodymium carbonate neodymium that gross mass is more than 70% carries out separation, blanking by cyclone separator；
The material being carried away by the wind in step 2, separation process, through bag collection, then passes through under bag collection feed opening
Material；
Step 3, the described blanking of step one and step 2 gained is put in kiln hood receiving hopper, then pass through auger control
Frequency stable processed at the uniform velocity to feeding in rotary kiln；
Step 4, material carry out stirring by the size flight on barrel in kiln, and back-up ring control material is in rotary kiln
The speed run, the two can keep material uniformly slowly to carry out roasting in rotary kiln；Then expect container under kiln tail
In；
Step 5, in the case that air-introduced machine provides power, material in container is lowered the temperature through delivery pipe conveying simultaneously, then leads to
Cross cyclone separator and carry out separation, blanking, the material being carried away by the wind in separation process, through dust collection equipment, is then set by dust suction
Standby feed opening blanking；Obtain final praseodymium neodymium oxide.
Described rotary kiln end kiln tail gradient is 1 °；
A kind of device of the method for roasting realizing the raising carbonated rare earth daily output, including rotary kiln 1, cyclone separator 2, receives
Dirt equipment 3, air-introduced machine 4, auger 5, kiln hood receiving hopper 6, air stove 7, conveyance conduit 8；
One end of conveyance conduit 8 is connected with cyclone separator 2, and the other end is connected with air stove 7 by pipeline；Delivery pipe
Auger 5 is provided with road 8, auger 5 is connected with receiving hopper, pending carbonated rare earth enters delivery pipe by receiving hopper through auger 5
Road 8；Air-introduced machine 4, dust collection device 3 and cyclone separator 2 are sequentially connected by pipeline；Kiln hood receiving hopper 6 is connected with auger 5；Twist
Imperial 5 one end are located at turn around kiln 1 kiln hood external-feeding in kiln, and rotary kiln 1 kiln tail is expected under material in container；Container, whirlwind
Separator 2, dust collection device 3 and air-introduced machine 4 are sequentially connected by pipeline；；
Table 1 is Data Comparison before and after the present embodiment roasting
Table 2 is the present embodiment pneumatic conveying drying tables of data
Table 3 is rotary kiln and rotary kiln design parameter and corresponding component effect and performance
Table 4 pneumatic conveying drying and dust collection device boiler's design and operation
As shown in Table 1, industrial requirements are complied fully with by the rare earth oxide that roasting of the present invention obtains, and because dynamically continuously roast
Burn so substantially reducing roasting time, the daily output is equivalent to 2 times of the daily output of old-fashioned kiln；As can be seen from Table 2, air-flow is done
The total amount of carbonated rare earth can be dried more than 70% by dry process, significantly excellent and centrifuge dripping method.
Claims (3)
1. a kind of improve the carbonated rare earth daily output method of roasting it is characterised in that: specifically comprise the following steps that
The hot blast that step one, rare earth carbonate enter the drying providing in delivery pipe using air stove makes dry materials, and is drawing
In the case that blower fan provides power, the carbonated rare earth that gross mass is more than 70% carries out separation, blanking by cyclone separator；
The material being carried away by the wind in step 2, separation process, through bag collection, then passes through bag collection feed opening blanking；
Step 3, the described blanking of step one and step 2 gained is put in kiln hood receiving hopper, then frequency is controlled by auger
Rate stably at the uniform velocity to feeding in rotary kiln；
Step 4, material carry out stirring by the size flight on barrel in kiln, and back-up ring control material is run in rotary kiln
Speed, the two can keep material uniformly slowly to carry out roasting in rotary kiln；Then expect in container under kiln tail；
Step 5, in the case that air-introduced machine provides power, material in container is lowered the temperature through delivery pipe conveying simultaneously, then by rotation
Wind separator carries out separation, blanking, and the material being carried away by the wind in separation process, through dust collection equipment, then passes through under dust collection equipment
Material mouth blanking；Obtain final rare earth oxide product.
2. as claimed in claim 1 a kind of improve the carbonated rare earth daily output method of roasting it is characterised in that: described rotary kiln
Kiln head and tail gradient is 1 °.
3. realize as claimed in claim 1 a kind of improve the carbonated rare earth daily output method of roasting device it is characterised in that:
Including rotary kiln (1), cyclone separator (2), dust collection device (3), air-introduced machine (4), auger (5), kiln hood receiving hopper (6), hot blast
Stove (7), conveyance conduit (8)；
One end of conveyance conduit (8) is connected with cyclone separator (2), and the other end is connected with air stove (7) by pipeline；Conveying
Auger (5) is provided with pipeline (8), auger (5) is connected with receiving hopper, pending carbonated rare earth is by receiving hopper through auger (5)
Enter conveyance conduit (8)；Air-introduced machine (4), dust collection device (3) and cyclone separator (2) are sequentially connected by pipeline；Kiln hood splicing
Bucket (6) is connected with auger (5)；Auger (5) is located at turn around kiln (1) kiln hood external-feeding in kiln, and rotary kiln (1) kiln tail is by material
Under expect in container；Container, cyclone separator (2), dust collection device (3) and air-introduced machine (4) are sequentially connected by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510752506.2A CN105271353B (en) | 2015-09-23 | 2015-11-09 | Calcination method for raising daily output of rare earth carbonate |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015106152106 | 2015-09-23 | ||
| CN201510615210 | 2015-09-23 | ||
| CN201510752506.2A CN105271353B (en) | 2015-09-23 | 2015-11-09 | Calcination method for raising daily output of rare earth carbonate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105271353A CN105271353A (en) | 2016-01-27 |
| CN105271353B true CN105271353B (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510752506.2A Expired - Fee Related CN105271353B (en) | 2015-09-23 | 2015-11-09 | Calcination method for raising daily output of rare earth carbonate |
| CN201520883613.4U Expired - Fee Related CN205275222U (en) | 2015-09-23 | 2015-11-09 | Improve calcination device of carbonic acid tombarthite daily output |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520883613.4U Expired - Fee Related CN205275222U (en) | 2015-09-23 | 2015-11-09 | Improve calcination device of carbonic acid tombarthite daily output |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105271353B (en) * | 2015-09-23 | 2017-01-18 | 北方稀土生一伦高科技有限公司 | Calcination method for raising daily output of rare earth carbonate |
| CN110357130A (en) * | 2019-08-07 | 2019-10-22 | 葫芦岛虹京科技有限公司 | A kind of acidizing fired device and its production method improving lithium carbonate conversion ratio |
| CN112707377A (en) * | 2021-01-07 | 2021-04-27 | 天华化工机械及自动化研究设计院有限公司 | System and method for efficiently and continuously producing anhydrous iron phosphate |
Citations (5)
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|---|---|---|---|---|
| CN101559968A (en) * | 2009-01-12 | 2009-10-21 | 南昌大学 | Preparation method of high-purity nano yttrium-based oxide powder |
| CN102092766A (en) * | 2011-03-07 | 2011-06-15 | 福建省长汀金龙稀土有限公司 | Preparation method of ultrafine lanthanum oxide powder |
| CN102180496A (en) * | 2011-03-03 | 2011-09-14 | 东北大学设计研究院（有限公司） | Device for producing alumina clinker by semi-dry process |
| CN202016883U (en) * | 2011-03-03 | 2011-10-26 | 东北大学设计研究院（有限公司） | Device for producing alumina clinker in semidry method |
| CN205275222U (en) * | 2015-09-23 | 2016-06-01 | 北方稀土生一伦高科技有限公司 | Improve calcination device of carbonic acid tombarthite daily output |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006272144A (en) * | 2005-03-29 | 2006-10-12 | Sumitomo Osaka Cement Co Ltd | Heavy metal insolubilizing material and method of treating heavy metal |
-
2015
- 2015-11-09 CN CN201510752506.2A patent/CN105271353B/en not_active Expired - Fee Related
- 2015-11-09 CN CN201520883613.4U patent/CN205275222U/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101559968A (en) * | 2009-01-12 | 2009-10-21 | 南昌大学 | Preparation method of high-purity nano yttrium-based oxide powder |
| CN102180496A (en) * | 2011-03-03 | 2011-09-14 | 东北大学设计研究院（有限公司） | Device for producing alumina clinker by semi-dry process |
| CN202016883U (en) * | 2011-03-03 | 2011-10-26 | 东北大学设计研究院（有限公司） | Device for producing alumina clinker in semidry method |
| CN102092766A (en) * | 2011-03-07 | 2011-06-15 | 福建省长汀金龙稀土有限公司 | Preparation method of ultrafine lanthanum oxide powder |
| CN205275222U (en) * | 2015-09-23 | 2016-06-01 | 北方稀土生一伦高科技有限公司 | Improve calcination device of carbonic acid tombarthite daily output |
Non-Patent Citations (2)
| Title |
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| "二氧化碳碳化法制备氧化镧粉体研究";肖燕飞等;《中国稀土学报》;20140430;第32卷(第2期);第197-204页 * |
| "攀西德昌氟碳铈矿精矿氧化焙烧反应制备碳酸稀土研究";周静等;《稀土》;20000430;第21卷(第2期);第19-25页 * |
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| Publication number | Publication date |
|---|---|
| CN205275222U (en) | 2016-06-01 |
| CN105271353A (en) | 2016-01-27 |
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Address after: 010110 Wuyi Road, Jinshan Development Zone, Hohhot, the Inner Mongolia Autonomous Region Applicant after: NORTH RARE EARTH SHENGYILUN HIGH-TECH CO., LTD. Address before: 010110 Wuyi Road, Jinshan Development Zone, Hohhot, the Inner Mongolia Autonomous Region Applicant before: INNER MONGOLIA SHENGYILUN RARE EARTH MATERIAL CO., LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170118 Termination date: 20191109 |