CN1054965A - Phosphorous fertilizer granulating plant with inner grading and inner back-feeding - Google Patents
Phosphorous fertilizer granulating plant with inner grading and inner back-feeding Download PDFInfo
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- CN1054965A CN1054965A CN 90110363 CN90110363A CN1054965A CN 1054965 A CN1054965 A CN 1054965A CN 90110363 CN90110363 CN 90110363 CN 90110363 A CN90110363 A CN 90110363A CN 1054965 A CN1054965 A CN 1054965A
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Abstract
The present invention is a kind of prilling granulator of new high-efficiency, is specially adapted to the granulation in the production of phosphate fertilizer.Its major technology characteristics are returning charges that prior art is carried out outside revolving drum, change into fully in turning circle rolls and carry out, and the particle of discharging from the device discharge port meets the requirement of finished product granularity regulation, thereby has cancelled whole outside returns equipment.Adopt the present invention in production of phosphate fertilizer, the floor space, facility investment, capital cost, power consumption, maintenance load etc. of granulation workshop section are all greatly reduced, economic benefit is very remarkable, and the quality that has also improved particle has simultaneously changed Working environment.
Description
The present invention relates to a kind of prilling granulator, particularly a kind of phosphate fertilizer pelleting device.
Granulation in the production of phosphate fertilizer has fluidized bed prilling, various method such as spray granulating.Traditional spray granulation, be spray granulating and the drying process of in a revolving drum, finishing particle, from the particle that revolving drum afterbody discharge port is discharged, process scalping and twice screening of dusting cover, remove greater than 4mm with less than the particle of 1mm, and obtain the finished product particle that particle diameter is 1～4mm.Wherein behind the particle fragmentation greater than 4mm, be returned to the returning charge mouth of revolving drum with the fine particle less than 1mm, spray granulating once more circulates.In whole granulation process, fine particle is after repeatedly whitewashing coating, drying, and particle diameter reaches the size of finished product particle regulation.This traditional spray granulation, in operating process, the returning charge amount is 4-6 a times of output, whole returning charges all is the returning charge mouth that is transported to revolving drum outside revolving drum.Material-returning device comprises chapelet, 4mm scalping, 1mm dusting cover, rotary conveyor etc.A large amount of outside returns makes the long flow path of this agglomeration technique, equipment many, shortcoming such as floor space is big, and the factory building height has also brought plant energy consumption big simultaneously, and thermosteresis is many, and dust loss is many, and maintenance load is big.The existing phosphate fertilizer plant of China all adopts this kind spray granulation.
For many years, people are exploring new spray granulation, wish to find a kind of spray granulating device: finish whole granulation process in this device, the particle of discharging from the device discharge port all is the particle that meets the finished product granularity requirements.Soviet Union scholar takes the lead in contributing in this field, at first stepped a step for addressing this problem, they have succeeded in developing the internal return technology at the end of the seventies, be characterized in the classfied cone tube being set at the afterbody of revolving drum, classfied cone tube and revolving drum rotate synchronously, enter the particle of classfied cone tube after the drying, along with the rotation of classfied cone tube and the axial motion of population, the progressively layering of thickness particle, coarse particle is on the upper strata, and the microcephaly is overflowed from the classfied cone tube, and fine particle is trapped in the lower floor of classfied cone tube major part place population, by being arranged on returning charge helical feed in the revolving drum to returning charge mouth, spray granulating once more.The particle that overflows from classfied cone tube microcephaly, still contain a certain proportion of underproof particle, also need be through scalping and the screening of dusting cover two-stage, but, the outside returns amount then doubly by the 4-6 of the output of traditional spray granulating device, the 0.5-1 that is reduced to output doubly, the outside returns device greatly reduces, the 20-30% of original scale be can narrow down to, facility investment, floor space and energy consumption saved.Insufficiently be, the particle of discharging from the revolving drum discharge port does not still meet the requirement of finished product granularity regulation, and a series of devices that outside returns is used still can not be cancelled.
The objective of the invention is to avoid the weak point of prior art, and provide a kind of cancellation whole outside returns devices, the particle of discharging from the discharge port of prilling granulator promptly meets the phosphorous fertilizer granulating plant with inner grading and inner back-feeding that the finished product granularity is stipulated.
Disclosed spray granulation for the complete internal classification internal return agglomeration technique of no outside returns, can be finished granulation, drying, classification and returning charge in an independent device.Main technical points of the present invention is, an axis and the corresponding to annular retaining ring of revolving drum axis are set in the microcephaly end of classfied cone tube, and classfied cone tube microcephaly foreign side is provided with the finished product roller grizzly, and the afterbody in the finished product roller grizzly is provided with shredder assembly.The annular retaining ring of the little cephalic par of classfied cone tube is an original creation structure of the present invention, has improved the grading effect of classfied cone tube greatly.After overflowing the particle that comes and enter the finished product roller grizzly from the classfied cone tube, along with the rotation of finished product roller grizzly and the motion of particle, particle less than 4mm is discharged from sieve aperture, be trapped in a small amount of large diameter particle (mainly being the particle piece) in the finished product roller grizzly, be set at shredder assembly in the revolving drum and be broken for particle, thereby make that the particle of being discharged by discharge port can be all as finished product than minor diameter.
If classfied cone tube and finished product roller grizzly axially between, a detailed catalogue roller grizzly is set again, one end of detailed catalogue roller grizzly joins with the annular retaining ring that is arranged on the little cephalic par of classfied cone tube, between the inner-wall surface of the outside wall surface of its other end and revolving drum, an annular retaining ring is set, annular retaining ring is with detailed catalogue roller grizzly and finished product roller grizzly axially-spaced, the outer wall of revolving drum is provided with one section secondary returning charge spiral, its inlet is opened in detailed catalogue roller grizzly district, outlet is opened on the main returning charge spiral, so then more helps the object of the invention and realizes.This be because, overflow the particle that comes from the classfied cone tube, in the detailed catalogue roller grizzly, sieved again, further screen out particle less than minimum grain size in the finished product, make that the size distribution of finished product particle is more concentrated, the finished product particle is more even.The particle that is screened out by the detailed catalogue roller grizzly, again by secondary returning charge helical feed to main returning charge spiral, other fine particle in main spiral is by the returning charge mouth of main returning charge helical feed to revolving drum, the spray granulating process that circulation primary is new.
The complete internal classification internal return agglomeration technique of disclosed no outside returns is brought up to a new height with the agglomeration technique in the production of phosphate fertilizer, compared with the prior art, has following relatively more outstanding advantage:
1. unit processes such as spray granulating, drying, classification and returning charge are finished in a prilling granulator, cancelled original outside returns equipment, shortened the production of phosphate fertilizer flow process, thereby greatly reduce the floor space of granulation workshop section, factory building height, facility investment and capital cost, power consumption, maintenance load and expense also greatly reduce, and can reduce operator.
2. by the returning charge spiral fine particle is transported to opening for feed in revolving drum, the temperature of particle is higher, needn't just can directly participate in the granulation circulation by reheat, thereby improve the heat energy utilization rate of making materials device greatly.
3. because the time that material stops is longer, and the material air-teturning temperature height has improved particle intensity, can make the contraction in length 1/3-1/4 of revolving drum simultaneously in making materials device, reduce equipment volume.
4. because whole granulation process is finished, therefore reduce dust from flying in the device of a sealing, improved operating environment and labor condition, reduced P simultaneously
2O
5Loss.
Calculate with the prilling granulator of producing 10000 tons of phosphorus ammoniums per year, the utility model is compared with the most of phosphate fertilizer plants of China existing spray granulations that adopts, the operator can reduce by 7 people, the factory building capital cost is saved 13.5 ten thousand yuan, 130,000 yuan of facility investment cost savings, installed capacity reduces 40KW, and heat energy saves 59.2 * 10
7Kilocalorie/year, P
2O
5Loss reduces 200 tons, and throughput improves 10-15%.If the granulation workshop section of national production of phosphate fertilizer producer all adopts disclosed agglomeration technique, economic benefit is very huge.
Provide one embodiment of the present of invention below in conjunction with description of drawings, and the utility model is further described.
Accompanying drawing 1 is a structural representation of the present invention.
Slip spray gun (1) is fixed on the material feeding box (2), the nozzle of spray gun extend in revolving drum (3) body.Be mounted with annular retaining ring (4), flight (5), main returning charge spiral (6), classfied cone tube (7), detailed catalogue roller grizzly (9), annular retaining ring (10) at turning circle cylindrical shell internal fixing.The microcephaly of classfied cone tube (7) points to the afterbody of revolving drum, be provided with annular retaining ring (8) in its microcephaly's end, the inner round wall face of one end of detailed catalogue roller grizzly (9) and annular retaining ring (8) joins, and annular retaining ring (10) is set between the outside wall surface of its other end and the inner-wall surface of revolving drum.Finished product roller grizzly (11) one ends are connected mutually with detailed catalogue roller grizzly (9), and the other end is connected with feed box (13).Finished product roller grizzly (11) constitutes by directly process sieve aperture on the revolving drum wall.Shredder assembly (12) is arranged in the afterbody of finished product roller grizzly, and shredder assembly can be the chain that is suspended on the rolling cylinder sieve wall, or hand hammer etc.Secondary returning charge spiral (14) is arranged on the outside wall surface of revolving drum, its import is opened in detailed catalogue roller grizzly (9) district near annular retaining ring (10), its outlet is opened in the entrance end of main returning charge spiral, classfied cone tube (7), annular retaining ring (8), detailed catalogue roller grizzly (9) and annular retaining ring (10) be configuration mutually, be fixed in the turning circle cylindrical shell (3), rotate synchronously with revolving drum.(A) being exhaust port, (B) is the outlet of finished product particle.
Technological process in the present invention is as follows: fine particle is transported to the head of revolving drum (3) by main returning charge spiral (6), along with the rotation of revolving drum, forms the material curtain.The slip that is ejected by spray gun (1) is coated on the surface of expecting particle in the curtain, and particle is in the process of axial motion, and its lip-deep slip is dried fixing, and diameter progressively increases.After particle enters classfied cone tube (7), along with the rotation of awl tube and the axial motion of particle, population is layering gradually, coarse particle is on the upper strata, by overflowing in the annular retaining ring (8) that is arranged on the little cephalic par of classification cone tube (7), fine particle is in lower floor, and is trapped in the major part place of classfied cone tube, by the head of main returning charge helical feed to revolving drum.After the particle that overflows in the annular retaining ring (8) enters detailed catalogue roller grizzly (9), by screening again, screen out fine particle less than finished product regulation particle diameter, screened out the fine particle of getting off and be transported to main returning charge spiral (6) by secondary returning charge spiral (14), the particle that stays enters finished product roller grizzly (11), and the particle that meets the finished product requirement is discharged from, and is trapped in a small amount of large diameter particle in the sieve, the device that is broken is broken for the particle that meets the finished product requirement, discharges at last and enters finished product.
Claims (2)
1, a kind of phosphate fertilizer pelleting device, a revolving drum (3) is arranged, in revolving drum, be provided with main returning charge spiral (6), flight (5), back-up ring (4), material feeding box (2) and feed box (13) are separately positioned on the two ends of revolving drum (3), be provided with classfied cone tube (7) by in the revolving drum of feed box one end, the little cephalic par that it is characterized in that classfied cone tube (7) is provided with axis and the corresponding to annular retaining ring of revolving drum axis (8), microcephaly foreign side is provided with finished product roller grizzly (11) at classfied cone tube (7), and the afterbody in roller grizzly (11) is provided with shredder assembly.
2, phosphate fertilizer pelleting device according to claim 1, it is characterized in that along revolving drum (3) axially, microcephaly foreign side at classfied cone tube (7) is provided with detailed catalogue roller grizzly (9) and finished product roller grizzly (11), one end of detailed catalogue roller grizzly and back-up ring (8) join, between the outside wall surface of the other end and revolving drum (3) inner-wall surface, annular retaining ring (10) is set, with detailed catalogue roller grizzly (9) and finished product roller grizzly (11) at axially-spaced, the outside wall surface of revolving drum (3) is provided with one section secondary returning charge spiral (14), its inlet is opened in detailed catalogue roller grizzly (9) district, and its outlet is opened on the main returning charge spiral (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90110363 CN1054965A (en) | 1990-12-27 | 1990-12-27 | Phosphorous fertilizer granulating plant with inner grading and inner back-feeding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90110363 CN1054965A (en) | 1990-12-27 | 1990-12-27 | Phosphorous fertilizer granulating plant with inner grading and inner back-feeding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1054965A true CN1054965A (en) | 1991-10-02 |
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ID=4881868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90110363 Pending CN1054965A (en) | 1990-12-27 | 1990-12-27 | Phosphorous fertilizer granulating plant with inner grading and inner back-feeding |
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| Country | Link |
|---|---|
| CN (1) | CN1054965A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301784C (en) * | 2004-12-28 | 2007-02-28 | 山东铝业公司 | Rotary bidirection circulation ball forming machine |
| CN103230760A (en) * | 2013-04-24 | 2013-08-07 | 江苏瑞和化肥有限公司 | Self-grinding device of lump in rotary drum granulator |
| CN104275123A (en) * | 2013-07-08 | 2015-01-14 | 江苏瑞安特重型机械有限公司 | Spraying granulation dryer |
| WO2016023259A1 (en) * | 2014-08-12 | 2016-02-18 | 柏红梅 | Reaction equipment and preparation system for synthetic particles |
| CN106111009A (en) * | 2016-07-29 | 2016-11-16 | 乐山市康博机电设备有限公司 | A kind of organic and inorganic fertilizer granulator |
| CN108704580A (en) * | 2018-07-20 | 2018-10-26 | 河南龙昌机械制造有限公司 | Organic fertilizer rotary drum prilling process and organic fertilizer drum granulating production line |
| CN112934111A (en) * | 2021-04-14 | 2021-06-11 | 郑州固力特新材料有限公司 | Granulation screening plant for sintered flux |
| CN113603554A (en) * | 2021-07-30 | 2021-11-05 | 太原柏悟化工科技有限公司 | Production method of urea nitrophosphate fertilizer |
| CN113634363A (en) * | 2016-04-26 | 2021-11-12 | 纽卡斯尔创新有限公司 | Feeding device for particle separator, particle separator and particle separation method |
-
1990
- 1990-12-27 CN CN 90110363 patent/CN1054965A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301784C (en) * | 2004-12-28 | 2007-02-28 | 山东铝业公司 | Rotary bidirection circulation ball forming machine |
| CN103230760A (en) * | 2013-04-24 | 2013-08-07 | 江苏瑞和化肥有限公司 | Self-grinding device of lump in rotary drum granulator |
| CN104275123A (en) * | 2013-07-08 | 2015-01-14 | 江苏瑞安特重型机械有限公司 | Spraying granulation dryer |
| WO2016023259A1 (en) * | 2014-08-12 | 2016-02-18 | 柏红梅 | Reaction equipment and preparation system for synthetic particles |
| CN113634363A (en) * | 2016-04-26 | 2021-11-12 | 纽卡斯尔创新有限公司 | Feeding device for particle separator, particle separator and particle separation method |
| CN106111009A (en) * | 2016-07-29 | 2016-11-16 | 乐山市康博机电设备有限公司 | A kind of organic and inorganic fertilizer granulator |
| CN106111009B (en) * | 2016-07-29 | 2019-12-24 | 南京海能电光源有限公司 | Organic and inorganic fertilizer granulator |
| CN108704580A (en) * | 2018-07-20 | 2018-10-26 | 河南龙昌机械制造有限公司 | Organic fertilizer rotary drum prilling process and organic fertilizer drum granulating production line |
| CN108704580B (en) * | 2018-07-20 | 2020-10-27 | 河南龙昌机械制造有限公司 | Organic fertilizer rotary drum granulation process and organic fertilizer rotary drum granulation production line |
| CN112934111A (en) * | 2021-04-14 | 2021-06-11 | 郑州固力特新材料有限公司 | Granulation screening plant for sintered flux |
| CN113603554A (en) * | 2021-07-30 | 2021-11-05 | 太原柏悟化工科技有限公司 | Production method of urea nitrophosphate fertilizer |
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