CN100430343C - Method of producing granular composite fertilizer using tower pelletizing - Google Patents
Method of producing granular composite fertilizer using tower pelletizing Download PDFInfo
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- CN100430343C CN100430343C CNB2004100777702A CN200410077770A CN100430343C CN 100430343 C CN100430343 C CN 100430343C CN B2004100777702 A CNB2004100777702 A CN B2004100777702A CN 200410077770 A CN200410077770 A CN 200410077770A CN 100430343 C CN100430343 C CN 100430343C
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- granulation
- fertilizer
- tower
- slip
- quartz powder
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Abstract
The present invention relates to a method for producing granular compound fertilizer by tower type granulation, which comprises the following steps that: a certain amount of additives is added into compound fertilizer slurry in a melting mixer; after the compound fertilizer slurry and the additive are uniformly stirred, the slurry and the additives enter a granulation tower for granulation. The method for producing granular compound fertilizer by tower type granulation makes use of the additives to reduce the surface tension and the viscosity of the compound fertilizer slurry to prevent that a granulation spray head is clogged, and leads tower type granulation production to stably, normally and continuously operate.
Description
Technical field
The present invention relates to a kind of method of producing granular composite fertilizer using tower pelletizing, specifically, relate to a kind of surface tension and viscosity of utilizing the additive quartz powder to reduce the compound manure slip, prevent that prilling spry from stopping up, make tower granulation production can stablize the normal method of operation continuously.The invention still further relates to the Application of Additives of quartz powder, and relate to the granular composite fertilizer of producing with described method as producing granular composite fertilizer using tower pelletizing.
Background technology
It is to add monoammonium phosphate and/or potash fertilizer composition (for example Repone K and/or vitriolate of tartar) and additive etc. are made slip in for example fusing urea or ammonium nitrate solution that tower granulation is produced the compound manure cardinal principle, slip is by the form ejection of cat head prilling spry with thin jet fluid column, the fluid column of ejection fragments into drop when contacting with air, drop descends in tower and carries out heat exchange with air, therefore forms particle and falls at the bottom of the tower.The major advantage of producing granular composite fertilizer using tower pelletizing:
(1), the melting charge slurry moisture content is low, the drying-free process has been saved energy consumption;
(2), smooth, mellow and full, the prevented from caking of particle surface, have the higher market competitiveness;
(3), good operational environment, three-waste free discharge belongs to process for cleanly preparing;
(4), can directly utilize production system urea or ammonium nitrate melt, simplified the technological process of production.
In existing producing granular composite fertilizer using tower pelletizing technology, additive mainly adopts clay, Paris white, ground dolomite or zeolite powder to wait and produces compound manure.Existing additive is in the production process of producing granular composite fertilizer using tower pelletizing; cause slip viscosity to increase; cause the tablets press shower nozzle to be easy to stop up, be to stop up once in the every work 1-2 of prilling spry hour substantially, thereby cause production steady and continuous normally not move.Therefore, need a kind of method that can overcome the above-mentioned defective of tower granulation method production granular composite fertilizer.
The present inventor is by the discovery of concentrating on studies, and adopts quartz powder can solve above-mentioned defective at producing granular composite fertilizer using tower pelletizing as additive, so finished the present invention.
Summary of the invention
The present invention is intended to overcome the defective that above-mentioned additive in use exists, and a kind of additive of producing granular composite fertilizer using tower pelletizing is provided.
The object of the invention provides a kind of method of producing granular composite fertilizer using tower pelletizing, and described method is that quartz powder is joined in the compound manure slip of melt mixer, and behind the thorough mixing, the mixed slurry of gained enters the granulation of cat head tablets press.
A further object of the present invention provides a kind of quartz powder as the application of additive in producing granular composite fertilizer using tower pelletizing.
Another object of the present invention provides a kind of granular composite fertilizer that contains quartz powder that adopts the inventive method to produce.
Specifically; the invention provides a kind of method of producing granular composite fertilizer using tower pelletizing; described method is less than 50 orders (comprising 50 orders) with fineness for example; be preferably the 80-200 order; or even thinner quartz powder joins in the compound manure slip of melt mixer, and the weight ratio of quartz powder and compound manure slip is about 100-2 for example: 1, be preferably about 60-2.5: 1; behind the thorough mixing, the mixed slurry of gained enters the granulation of cat head tablets press.
The inventive method utilizes the additive quartz powder to reduce the surface tension and the viscosity of compound manure slip, improves the slip flowability, thereby prevents that prilling spry from stopping up, and makes tower granulation production can stablize normally operation continuously.Adopt the inventive method, can accomplish that basically prilling spry work 1-2 talent has latch up phenomenon and takes place, realized the operation of production steady and continuous.
The present invention also provides a kind of quartz powder as the application of additive in producing granular composite fertilizer using tower pelletizing.For example fineness is less than 50 orders; be preferably the 80-200 order; even thinner described quartz powder joins in the compound manure slip of melt mixer; the weight ratio of quartz powder and compound manure slip is for example about 100-2: 1; be preferably about 60-2.5: 1, more preferably about 20-7: behind 1 thorough mixing, the mixed slurry of gained enters the granulation of cat head tablets press; can reduce or delay the generation of prilling spry latch up phenomenon, thereby make the operation of production steady and continuous.
The present invention also provides a kind of granular composite fertilizer of producing with the inventive method, described compound manure for example contains 1-30% approximately by weight, the fineness that is preferably about 5-15% by weight is preferably the 80-200 order less than 50 orders, even thinner described quartz powder.
The compound fertilizer product that the present invention produces can be for example to urinate base or nitro-compound fertilizer material, and described fertilizer can be nitrogen phosphorus potassium three elements complex fertilizer, also can be nitrogen phosphorus or binary compound fertilizer containing nitrogen and potassium material.Adopt the inventive method to be for example (N+P by production available nutrient content
2O
5+ K
2O) 〉=25% compound manure.
The quartz powder that adopts among the present invention can be the commercially available prod with described fineness, also can be further levigate after the commercially available prod is bought, and reaches the product of described fineness requirement.
In the present invention, described compound manure slip is meant and can be used for the compound manure raw material that tower granulation is produced, the melting charge slurry that obtains after the particularly for example conventional compound manure raw materials melt.
Conventional compound manure raw material is the urine base or the nitro-compound fertilizer material raw material of for example tower granulation production.Described raw material can include only nitrogenous fertilizer, phosphate fertilizer and/or potash fertilizer fertilizer component, also can denitrogenate, outside phosphorus and/or the potash fertilizer fertilizer component, and in also comprising, trace element fertilizer, even other conventional additives (filler) for example clay, lime carbonate or ground dolomite.
The nitrogen fertilizer composition is selected from a kind of in for example urea, ammonium nitrate, urea and ammonium chloride and/or ammonium sulfate, ammonium nitrate and ammonium chloride or the ammonium sulfate.
The phosphate fertilizer fertilizer component is a monoammonium phosphate for example.
The potash fertilizer fertilizer component is Repone K and/or vitriolate of tartar.
In, the trace element fertilizer composition conventional in, trace compound, for example calcium sulfate, ferric sulfate, zinc sulfate, sal epsom, copper sulfate, manganous sulfate, boric acid, borax and ammonium molybdate etc.
Product of the present invention can also contain an amount of dyestuff, for example for example Xylene Red, acid orchid etc. of matching stain.Dyestuff can be made the color grains compound manure after adding.
The compound manure slip that can adopt among the present invention can be referring to for example CN1475470A, CN1403423A.
The present invention has excellent effect, it has changed the kind of the additive of existing producing granular composite fertilizer using tower pelletizing, makes to have reduced slip viscosity in the production process, has improved the flowability of slip, prevent the obstruction of prilling spry, therefore produce and to stablize smoothly operation normally.Quartz powder also is a kind of cheap additive simultaneously, can reduce production costs.
Embodiment
The following example is to further explanation of the present invention and explanation, and the present invention is not constituted any limitation.
Embodiment 1
Get urea-base compound fertilizer slip (specification of slip is 15.6-15.0-15.9) 3.0kg; fineness is that 200 purpose quartz powder 0.05kg and returning charge join in the mixing tank; thorough mixing is made mixed slurry; mixed slurry sprays by the cat head tablets press and enters the prilling tower granulation; the granulation material obtains the qualified particle of about 1-4mm by screening; this qualified particle enters the face powder machine again to be prevented obtaining qualified product after caking is handled; get back in the mixing tank as returning charge together after fine powder material after the screening and the fragmentation of big material; this product is the granular nitrogen phospho potash complex fertilizer; it contains N 15.31%, P
2O
514.70%, K
2O 15.66%, moisture 0.50%, granule strength 22.0N.
Embodiment 2
Get urea-base compound fertilizer slip (specification of slip is 26-0-26) 2.5kg; fineness is that 80 purpose quartz powder 1.0kg and returning charge join in the mixing tank; thorough mixing; make mixed slurry; mixed slurry sprays by the cat head tablets press and enters the prilling tower granulation; the granulation material obtains the qualified particle of about 1-4mm by screening; this qualified particle enters the face powder machine again to be prevented obtaining qualified product after caking is handled; get back in the mixing tank as returning charge together after fine powder material after the screening and the fragmentation of big material; this product is the granular nitrogen phospho potash complex fertilizer; it contains N 18.56%, P
2O
50, K
2O 18.61%, moisture 0.61%, granule strength 18.5N.
Embodiment 3
Get urea-base compound fertilizer slip (specification of slip is 21-12-0) 3.5kg; fineness is that 100 purpose quartz powder 0.5kg and returning charge join in the mixing tank; thorough mixing; make mixed slurry; mixed slurry sprays by the cat head tablets press and enters the prilling tower granulation; the granulation material obtains the qualified particle of about 1-4mm by screening; this qualified particle enters the face powder machine again to be prevented obtaining qualified product after caking is handled; get back in the mixing tank as returning charge together after fine powder material after the screening and the fragmentation of big material; this product is the granular nitrogen phospho potash complex fertilizer; it contains N 18.35%, P
2O
510.50%, K
2O 0, moisture 0.54%, granule strength 19.0N.
Embodiment 4
Get nitro-compound fertilizer slip (specification of slip is 23-10-9) 4.0kg; fineness is that 80 purpose quartz powder 1.0kg and returning charge join in the mixing tank; thorough mixing; make mixed slurry; mixed slurry sprays by the cat head tablets press and enters the prilling tower granulation; the granulation material obtains the qualified particle of about 1-4mm by screening; this qualified particle enters the face powder machine again to be prevented obtaining qualified product after caking is handled; get back in the mixing tank as returning charge together after fine powder material after the screening and the fragmentation of big material; this product is the granular nitrogen phospho potash complex fertilizer; it contains N 18.40%, P
2O
58.00%, K
2O 7.10%, moisture 0.72%, granule strength 13.0N.
Embodiment 5
Get nitro-compound fertilizer slip (specification of slip is 16-0-16) 3.6kg; fineness is that 150 purpose quartz powder 0.2kg and returning charge join in the mixing tank; thorough mixing; make mixed slurry; mixed slurry sprays by the cat head tablets press and enters the prilling tower granulation; the granulation material obtains the qualified particle of 1-4mm by screening; this qualified particle enters the face powder machine again to be prevented obtaining qualified product after caking is handled; get back in the mixing tank as returning charge together after fine powder material after the screening and the fragmentation of big material; this product is the granular nitrogen phospho potash complex fertilizer; it contains N 15.16%, P
2O
50, K
2O15.30%, moisture 0.71%, granule strength 14.6N.
Claims (4)
1, a kind of method of producing granular composite fertilizer using tower pelletizing; it is characterized in that quartz powder is joined in the compound manure slip; the fineness of described quartz powder is more than 50 orders; the weight ratio of described compound manure slip and quartz powder is 100-2: 1; behind the thorough mixing, the mixed slurry of gained enters the granulation of cat head tablets press.
2, according to the process of claim 1 wherein that the fineness of described quartz powder is the 80-200 order.
3, according to the process of claim 1 wherein that described compound manure is urine base or nitro-compound fertilizer material.
4, according to the method for claim 1 or 3, wherein, the weight ratio of described compound manure slip and quartz powder is 60-2.5: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100777702A CN100430343C (en) | 2004-12-31 | 2004-12-31 | Method of producing granular composite fertilizer using tower pelletizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100777702A CN100430343C (en) | 2004-12-31 | 2004-12-31 | Method of producing granular composite fertilizer using tower pelletizing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1752056A CN1752056A (en) | 2006-03-29 |
| CN100430343C true CN100430343C (en) | 2008-11-05 |
Family
ID=36679070
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100777702A Active CN100430343C (en) | 2004-12-31 | 2004-12-31 | Method of producing granular composite fertilizer using tower pelletizing |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030592B (en) * | 2010-11-10 | 2013-01-30 | 张超 | Tower-granulated low-nitrogen high-phosphorus urine sulfur radical compound fertilizer and preparation method thereof |
| CN102020513A (en) * | 2010-12-28 | 2011-04-20 | 瓮福（集团）有限责任公司 | Additive for tower-type pelletizing of compound fertilizer |
| CN102515978B (en) * | 2011-11-23 | 2014-04-02 | 河南心连心化肥有限公司 | Slow-release urea and production method thereof |
| CN102850124B (en) * | 2012-09-04 | 2015-03-04 | 深圳市芭田生态工程股份有限公司 | Sulphate-potassium magnesium fertilizer and preparation method thereof |
| CN106008003A (en) * | 2016-05-31 | 2016-10-12 | 史丹利化肥扶余有限公司 | High tower granulation produced high concentration compound fertilizer and production method thereof |
| CN106116850A (en) * | 2016-06-25 | 2016-11-16 | 深圳市芭田生态工程股份有限公司 | The urea-base compound fertilizer that a kind of air prilling produces |
| CN107417426A (en) * | 2017-09-18 | 2017-12-01 | 湖南正旺农肥科技有限公司 | Cellular instant granular complex fertilizer production method and its device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS526649B2 (en) * | 1971-11-22 | 1977-02-23 |
-
2004
- 2004-12-31 CN CNB2004100777702A patent/CN100430343C/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS526649B2 (en) * | 1971-11-22 | 1977-02-23 |
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Assignee: Guigang Batian Ecology Co.,Ltd. Assignor: Batian Ecological Engineering Co., Ltd., Shenzhen Contract record no.: 2010450000007 Denomination of invention: Method for producing granular compound fertilizer by tower prilling Granted publication date: 20081105 License type: Exclusive License Open date: 20060329 Record date: 20100521 |
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Effective date of registration: 20140721 Address after: 518057 Guangdong province Shenzhen city Nanshan District high tech park two Hing Road No. 10 Patentee after: Batian Ecological Engineering Co., Ltd., Shenzhen Patentee after: Guigang Batian Ecology Co.,Ltd. Address before: 518105 third industrial zone, riverside, Songgang street, Shenzhen, Guangdong, Baoan District Patentee before: Batian Ecological Engineering Co., Ltd., Shenzhen |