CN1403422A - Drum peletizing process of molten ammonium nitrate-urea slurry to produce granulated composite fertilizer - Google Patents
Drum peletizing process of molten ammonium nitrate-urea slurry to produce granulated composite fertilizer Download PDFInfo
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- CN1403422A CN1403422A CN 02134970 CN02134970A CN1403422A CN 1403422 A CN1403422 A CN 1403422A CN 02134970 CN02134970 CN 02134970 CN 02134970 A CN02134970 A CN 02134970A CN 1403422 A CN1403422 A CN 1403422A
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Abstract
The granulated composite fertilizer is produced through mixing and heating to metal proper amount of ammonium nitrate and urea material; atomizing the slurry in a nozzle and mixing with powdered nitrogen fertilizer, phosphate fertilizer, potash fertilizer and stuffing; pelletizing in a pelletizing machine and cooling in a cooling machine. Into its material, trace element or dye may be added to produce composite containing trace elements or color composite fertilizer. The fertilizer product contains nitrate nitrogen and urea nitrogen and thus has high fertilizer effect. Without drying process, and the said production process is simple and has low power consumption, low in production cost, high yield, good operation environment and no waste exhaust.
Description
Technical field
The present invention relates to composite fertilizer, particularly relate to the method that a kind of ammonium nitrate-urea melting slip drum granulating is produced granular composite fertilizer.
Background technology
In agriculture production, be extensive use of various fertilizer, mainly be chemical fertilizer of simple substance and contain, the polyelement composite fertilizer of nitrogen, phosphorus, potassium and other nutritive element, wherein the production method of compound manure mainly contains granulating method, slurry process, extrusion process and blending method etc., they are urea, ammonium nitrate, phosphorus ammonium, coarse whiting, Repone K, vitriolate of tartar etc. to be carried out secondary processing make the compound manure that contains various nutrient elements such as nitrogen phosphorus potassium.The employed slip of tradition slurry process is single ammonium nitrate or urea slip, because single ammonium nitrate or urea slip are a kind of aqueous solution slips, moisture content is more in the slip, so granule materials moisture content need reach the requirement of product by drying process.Be extensive use of rotary drum granulator in the granulating method production technique, its major advantage has: (1), process are simple, but intuitive operation, and the granulation control ratio is easier to; (2), has good grading; (3), the product specification adjustment is flexible, the granularity span of control is wide; (4), technology prilling temperature height in the rotary drum, so granulation moisture content is low, the balling ratio height, product particle intensity is big.But the drum granulating facility investment is bigger.In prior art; so Shanghai Chemical Research Inst's chemical fertilizer urea (ammonium nitrate) discloses employing urea or saltpetre ammonium solution (strength of solution 〉=90%) and monoammonium phosphate for part slurry process antidiuresis element (ammonium nitrate) composite fertilizer of its plinth raw material (the 13 the phosphate fertilizer annual meeting AC material in the whole nation in May calendar year 2001); sylvite is granulation together; granulation material drying; cooling back packaging final prod; the principal feature of this method is to utilize urea or saltpetre ammonium solution to have certain temperature and cementability to spray into and help granulation for powders in the tablets press; make urea or ammonium nitrate nitrogen-phosphorus-potassium compound fertilizer, product moisture content is reduced.Yet still there is following deficiency in this method: only contain nitrate or urinate basic nitrogen in the product of (1), urea or the preparation of ammonium nitrate slip; (2), urea or ammonium nitrate slurry solution moisture height, so the granulation production process needs drying process, so drying plant investment cost and process cost are higher.
Summary of the invention
The present invention aims to provide the method that a kind of ammonium nitrate-urea melting slip drum granulating is produced granular composite fertilizer, so that reduce the energy consumption in facility investment and the production process, and make ammonium nitrate-urea compound fertilizer of being produced contain nitric nitrogen and urea nitrigen simultaneously, to improve fertilizer efficiency.
For achieving the above object; the invention provides a kind of ammonium nitrate-urea melting slip drum granulating and produce the method for granular composite fertilizer; this method is with an amount of ammonium nitrate, the fusion of urea raw material Hybrid Heating; melting charge slurry by shower nozzle atomizing and with fine silt nitrogen phosphorus, nitrogen potassium or the granulation in rotary drum granulator of nitrogen, phosphorus, potassic fertilizer and filler, the material after the granulation obtains granular nitrogen, phosphorus, K compound fertilizer after the cooler cooling.
More particularly, this method comprises the steps:
A, with ammonium nitrate and urea in 1: the ratio of (0.1～30) (weight part) is mixed, and is heated into melting charge slurry under 100～140 ℃ of temperature;
B, in rotary drum granulator, add a kind of and filler be selected from nitrogen phosphorus, nitrogen potassium or nitrogen, phosphorus, the potassium fine silt fertilizer, wherein, the proportioning of ammonium nitrate-urea and nitrogenous-phosphatic manure and filler (weight part) is 1: (0.1～1.0): (0.1～1.2): (0.1～0.8); The proportioning of ammonium nitrate-urea and nitrogen-potassium fertilizer and filler (weight part) is 1: (0.1～1.0): (0.1～1.2): (0.1～0.8); The proportioning of ammonium nitrate-urea and nitrogen, phosphorus, potassic fertilizer and filler (weight part) is 1: (0.1～1.0): (0.1～1.2): (0.1～1.2): (0.1～0.8);
C, ammonium nitrate-urea melting slip are separated into small droplets by the shower nozzle atomizing, carry out granulation with material in the tablets press, and prilling temperature is 60～85 ℃;
Granule materials after d, the granulation enters the cooler cooling, enters the face powder tube by the qualified particle of screening (1-4mm) again and carries out packing after the surface treatment again, obtains granular nitrogen, phosphorus, K compound fertilizer.Fine granular materials after the screening as returning charge, is got back to tablets press after the macrobead fragmentation.
Described nitrogenous fertilizer is ammonium chloride, ammonium sulfate, carbon ammonium, and phosphate fertilizer is monoammonium phosphate, diammonium phosphate, coarse whiting, general calcium, fused(calcium magnesium)phosphate, and potash fertilizer is Repone K, vitriolate of tartar.
Farm crop need in, trace element seldom, but to improving crop yield, the quality of improving crop has certain effect, therefore simultaneously can add an amount of moderate-element compound or trace compound at the melting charge slurry drum granulating, in obtaining containing, the granular composite fertilizer of micronutrient.In described, trace compound is for being selected from calcium cpd, magnesium compound, sulphur compound, boron compound, one or more mixtures in copper compound, iron cpd, manganic compound, molybdenum thing, the Zinc compounds.
When ammonium nitrate-urea melting slip prepares, also can add an amount of matching stain, as Xylene Red, acid orchid, erie black, turmeric yellow etc., make the color grains compound manure, the add-on of dyestuff and the ratio of fertilizer (weight part) they are (0.0001～0.0003): 1.
Described filler is Paris white, attapulgite, clay, wilkinite.
The compound manure that method of the present invention is produced can be a granular nitrogen-phosphorus potassium Nitrogen, Phosphorus and Potassium, also can be granular nitrogen-phosphorus or binary compound fertilizer containing nitrogen and potassium.Product available nutrient content (N+P
2O
5+ K
2O) 〉=25%.
The present invention compares for raw material part slurry process antidiuresis base (nitro) compound manure with existing urea (ammonium nitrate) and has the following advantages:
One, contain urea nitrigen simultaneously in nitrogen potassium, nitrogen phosphorus or the nitrogen-phosphorus-potassium compound fertilizer nitrogen that method of the present invention is produced, nitric nitrogen so effect are remarkable;
Two, method of the present invention can generate the characteristics of eutectic compound according to ammonium nitrate and urea, with ammonium nitrate, the fusion of urea Hybrid Heating, effectively reduces melt temperature;
Three, ammonium nitrate-urea melting slip drum granulating, moisture content is low, the drying-free process, thereby can save the production energy consumption;
Four, method of the present invention directly links up granulation and cooling, has saved drying process, can save drying plant investment and process cost;
Five, method of the present invention makes prilling temperature improve a lot than the common process temperature, so the granulation balling ratio obviously improves, thereby has improved equipment capacity;
Six, method of the present invention does not have a large amount of exhaust emissionss owing to cancelled drying process during production, good operational environment, and three-waste free discharge belongs to process for cleanly preparing.
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
Getting solid ammonium nitrate 7.5kg and solid urea 17.5kg is heated to 130 ℃ and becomes melting charge slurry; extracting waste solid Repone K 17.5kg; stopping composition (clay) 7.4kg; magnesium sulfate monohydrate 0.1kg; manganous sulfate 0.01kg and returning charge join in the rotary drum granulator; melting charge slurry is carried out mixing granulation by the shower nozzle atomizing and with solid materials; make material back material and enter cooler; cooling back granule materials enters the qualified particle that screening obtains 1～4 millimeter; this qualified particle enters the face powder machine again to carry out surface conditioning and promptly obtains qualified product; this product is a white granular composite N-K fertilizer product, this product N: K
2O=1: 1, contain N21.2%, wherein nitric nitrogen 2.55%, urea nitrigen 16.1%, moisture 0.6% contains magnesium simultaneously, and sulphur moderate-element and manganese microelement, the granule strength of product are 28N.
Embodiment 2
Get solid ammonium nitrate 5.0kg and solid urea 13.0kg, be heated to 125 ℃ and become melting charge slurry, get solid ammonium chloride 5.5kg, solid phosphoric acid two ammonium 6.0kg, solid sulphuric acid potassium 12.0kg, stopping composition (wilkinite) 8.25kg, calcium sulfate 0.5kg, ferric sulfate 0.5kg, zinc sulfate 0.25kg and returning charge join in the drum granulating, melting charge slurry is carried out mixing granulation by the shower nozzle atomizing and with solid materials, material enters cooler after the granulation, cooling back material enters the qualified particle that screening obtains 1～4 millimeter, this qualified particle enters the face powder tube again and carries out the surface conditioning, promptly obtain qualified product, this product is a khaki color granular nitrogen phospho potash complex fertilizer product, and this product contains N20.23%, P
2O
55.52%, K
2O12%, moisture 0.82% contain calcium, sulphur moderate-element and iron, zinc microelement simultaneously, and product particle intensity is 22N.
Embodiment 3
Get solid ammonium nitrate 4.0kg and solid urea 10.0kg; be heated to 120 ℃ and become melting charge slurry; get solid ammonium sulfate 3.0kg; solid coarse whiting 10.0kg; solid calcium magnesium-phosphorus fertilizer 7.5kg; solid Repone K (white) 11.0kg; stopping composition (attapulgite) 4.4kg; copper sulfate 0.05kg; ammonium molybdate 0.05kg and returning charge join in the rotary drum granulator; melting charge slurry is carried out mixing granulation by the shower nozzle atomizing with the solid material; material advances cooler after the granulation; cooling back granule materials enters screening; obtain 1～4 millimeter qualified particle; this qualified particle enters the face powder tube again; carry out the surface conditioning; promptly obtain qualified product; this product is the canescence calcic; magnesium; sulphur moderate-element and cupric; the compound manure of molybdenum trace element, it contains N13.18%; P
2O
510.8%, K
2O13.20%, moisture 0.67%, product particle intensity 25N.
Embodiment 4
Get solid ammonium nitrate 5.0kg and solid urea 11.0kg; be heated to 128 ℃ and become melting charge slurry; get solid carbon ammonium 7.5kg; solid phosphoric acid one ammonium 6.5kg; solid white Repone K 8.5kg; stopping composition (clay) 11.225kg; sal epsom 0.25kg; ammonium molybdate 0.05kg; acid blue dyestuff 3 grams and returning charge join in the rotary drum granulator; melting charge slurry is carried out mixing granulation by the shower nozzle atomizing with solid materials; material enters cooler after the granulation; cooling back granule materials enters screening; obtain 1～4 millimeter qualified particle; this qualified particle enters the face powder tube again and carries out the surface conditioning; promptly obtain qualified product, these qualified product contain N17.33%; P
2O
56.24%, K
2O10.20%, moisture 0.73% contain trace element in sulphur, magnesium, the molybdenum simultaneously, and this product is blue look, product particle intensity 30N.
Embodiment 5
Get solid ammonium nitrate 7.5kg and solid urea 11.0kg; be heated to 131 ℃ and become melting charge slurry; get solid white Repone K 6.25kg; solid sulphuric acid potassium 7.5kg; weighting agent (Paris white) 17.75kg; solid sulphuric acid zinc 0.5kg and returning charge are added in the rotary drum granulator; melting charge slurry is carried out mixing granulation by the shower nozzle atomizing with solid materials; material enters cooler after the granulation; cooling back granule materials enters screening; obtain 1～4 millimeter qualified particle; this qualified particle enters the face powder tube again and carries out the surface conditioning; promptly obtain qualified product; this product is a binary compound fertilizer containing nitrogen and potassium, and its product contains N15.22%; K
2O15.0%, moisture 0.84%, product also contains sulphur simultaneously, trace element in calcium, the zinc etc., product is 36N for white particle intensity.
Embodiment 6
Get solid ammonium nitrate 13.0kg and solid urea 9.0kg; be heated to 119 ℃ and become melting charge slurry; get the red Repone K 15.0kg of solid; solid coarse whiting 5.0kg; the general calcium 5.0kg of solid; weighting agent (clay) 3.8kg; solid borax 0.2kg and returning charge are added in the rotary drum granulator; melting charge slurry is carried out mixing granulation by the shower nozzle atomizing with solid materials; material enters cooler after the granulation; cooling back material enters screening; obtain 1～4 millimeter qualified particle; this qualified particle enters the face powder tube again and carries out the surface conditioning; promptly obtain qualified product; this product is pink NpK complex fertilizer product, and this product contains N17.12%; P
2O
55.4%, K
2O18.0%, moisture 0.92%, product also contains sulphur simultaneously, trace element in calcium, the boron etc., product particle intensity is 22N.
Claims (7)
1, a kind of ammonium nitrate-urea melting slip drum granulating is produced the method for granular composite fertilizer; it is characterized in that; this method is with an amount of ammonium nitrate, the fusion of urea raw material Hybrid Heating; melting charge slurry by shower nozzle atomizing and with fine silt nitrogen phosphorus, nitrogen potassium or the granulation in rotary drum granulator of nitrogen, phosphorus, potassic fertilizer and filler, the material after the granulation obtains granular nitrogen, phosphorus, K compound fertilizer after the cooler cooling.
2, the method for claim 1 is characterized in that, this method comprises the steps:
A, with ammonium nitrate and urea in 1: the ratio of (0.1～30) (weight part) is mixed, and is heated into melting charge slurry under 100～140 ℃ of temperature;
B, in rotary drum granulator, add a kind of and filler be selected from nitrogen phosphorus, nitrogen potassium or nitrogen, phosphorus, the potassium fine silt fertilizer, wherein, the proportioning of ammonium nitrate-urea and nitrogenous-phosphatic manure and filler (weight part) is 1: (0.1～1.0): (0.1～1.2): (0.1～0.8); The proportioning of ammonium nitrate-urea and nitrogen-potassium fertilizer and filler (weight part) is 1: (0.1～1.0): (0.1～1.2): (0.1～0.8); The proportioning of ammonium nitrate-urea and nitrogen, phosphorus, potassic fertilizer and filler (weight part) is 1: (0.1～1.0): (0.1～1.2): (0.1～1.2): (0.1～0.8);
C, ammonium nitrate-urea melting slip are separated into small droplets by the shower nozzle atomizing, carry out granulation with material in the tablets press, and prilling temperature is 60～85 ℃;
Granule materials after d, the granulation obtains granular nitrogen, phosphorus, K compound fertilizer after entering the cooler cooling.
3, the method for claim 1 is characterized in that, described nitrogenous fertilizer is ammonium chloride, ammonium sulfate, carbon ammonium, and phosphate fertilizer is monoammonium phosphate, diammonium phosphate, coarse whiting, general calcium, fused(calcium magnesium)phosphate, and potash fertilizer is Repone K, vitriolate of tartar.
4, method as claimed in claim 1 or 2 is characterized in that, the melting charge slurry drum granulating simultaneously can add an amount of moderate-element compound or trace compound, in obtaining containing, the granular composite fertilizer of micronutrient.
5, method as claimed in claim 4, it is characterized in that, in described, trace compound is for being selected from calcium cpd, magnesium compound, sulphur compound, boron compound, one or more mixtures in copper compound, iron cpd, manganic compound, molybdenum thing, the Zinc compounds.
6, the method for claim 1, it is characterized in that, when ammonium nitrate-urea melting slip prepares, also can add an amount of matching stain, make the color grains compound manure, the add-on of dyestuff and the ratio of fertilizer (weight part) are (0.0001～0.0003): 1.
7, method as claimed in claim 1 or 2 is characterized in that, described filler is Paris white, attapulgite, clay, wilkinite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02134970 CN1208288C (en) | 2002-10-14 | 2002-10-14 | Drum peletizing process of molten ammonium nitrate-urea slurry to produce granulated composite fertilizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02134970 CN1208288C (en) | 2002-10-14 | 2002-10-14 | Drum peletizing process of molten ammonium nitrate-urea slurry to produce granulated composite fertilizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1403422A true CN1403422A (en) | 2003-03-19 |
| CN1208288C CN1208288C (en) | 2005-06-29 |
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|---|---|---|---|
| CN 02134970 Expired - Lifetime CN1208288C (en) | 2002-10-14 | 2002-10-14 | Drum peletizing process of molten ammonium nitrate-urea slurry to produce granulated composite fertilizer |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486610B (en) * | 2008-12-19 | 2012-07-11 | 深圳市芭田生态工程股份有限公司 | Compound fertilizer production method without drying process |
| CN102584396A (en) * | 2012-02-15 | 2012-07-18 | 瓮福（集团）有限责任公司 | Method for producing urea-based compound fertilizer by high tower granulation |
| CN102674962A (en) * | 2012-05-07 | 2012-09-19 | 青岛高次团粒生态技术有限公司 | Matrix formula suitable for recovering ion type rare earth tailings vegetation |
| CN103232270A (en) * | 2013-04-22 | 2013-08-07 | 沈阳化工大学 | Method for synthesizing urea ammonia nitrate (UAN) high-nitrogen slow-release liquid composite fertilizer |
| CN103626568A (en) * | 2012-08-29 | 2014-03-12 | 谢树才 | Preparation technology for double-enzyme zinc and ammonium composite fertilizer |
| CN107011064A (en) * | 2017-05-16 | 2017-08-04 | 四川金象赛瑞化工股份有限公司 | Increase the method for slurry mobility in a kind of nitro-compound fertilizer production |
| CN107892612A (en) * | 2017-10-19 | 2018-04-10 | 成都云图控股股份有限公司 | A kind of method for reducing high tower nitro product moisture |
| CN107935753A (en) * | 2017-10-23 | 2018-04-20 | 安徽省国壬农业科技有限公司 | A kind of composite potassium sulfate fertilizer containing organosilicon and nitrate nitrogen and preparation method thereof |
| CN109134065A (en) * | 2018-07-02 | 2019-01-04 | 南宁市英德肥业有限责任公司 | A method of granular pattern compound fertilizer is produced without steam granulation using potassium fulvate |
| CN113402319A (en) * | 2021-06-01 | 2021-09-17 | 华强化工集团股份有限公司 | Slow-release fertilizer for rape and preparation method thereof |
-
2002
- 2002-10-14 CN CN 02134970 patent/CN1208288C/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486610B (en) * | 2008-12-19 | 2012-07-11 | 深圳市芭田生态工程股份有限公司 | Compound fertilizer production method without drying process |
| CN102584396A (en) * | 2012-02-15 | 2012-07-18 | 瓮福（集团）有限责任公司 | Method for producing urea-based compound fertilizer by high tower granulation |
| CN102674962A (en) * | 2012-05-07 | 2012-09-19 | 青岛高次团粒生态技术有限公司 | Matrix formula suitable for recovering ion type rare earth tailings vegetation |
| CN102674962B (en) * | 2012-05-07 | 2013-10-16 | 青岛冠中生态股份有限公司 | Matrix formula suitable for recovering ion type rare earth tailings vegetation |
| CN103626568A (en) * | 2012-08-29 | 2014-03-12 | 谢树才 | Preparation technology for double-enzyme zinc and ammonium composite fertilizer |
| CN103626568B (en) * | 2012-08-29 | 2015-08-12 | 谢树才 | A kind of two enzyme zinc ammonium compound fertilizer preparation technology |
| CN103232270A (en) * | 2013-04-22 | 2013-08-07 | 沈阳化工大学 | Method for synthesizing urea ammonia nitrate (UAN) high-nitrogen slow-release liquid composite fertilizer |
| CN107011064A (en) * | 2017-05-16 | 2017-08-04 | 四川金象赛瑞化工股份有限公司 | Increase the method for slurry mobility in a kind of nitro-compound fertilizer production |
| CN107892612A (en) * | 2017-10-19 | 2018-04-10 | 成都云图控股股份有限公司 | A kind of method for reducing high tower nitro product moisture |
| CN107935753A (en) * | 2017-10-23 | 2018-04-20 | 安徽省国壬农业科技有限公司 | A kind of composite potassium sulfate fertilizer containing organosilicon and nitrate nitrogen and preparation method thereof |
| CN109134065A (en) * | 2018-07-02 | 2019-01-04 | 南宁市英德肥业有限责任公司 | A method of granular pattern compound fertilizer is produced without steam granulation using potassium fulvate |
| CN113402319A (en) * | 2021-06-01 | 2021-09-17 | 华强化工集团股份有限公司 | Slow-release fertilizer for rape and preparation method thereof |
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|---|---|
| CN1208288C (en) | 2005-06-29 |
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Assignee: Guigang Batian Ecology Co.,Ltd. Assignor: SHENZHEN BATIAN ECOTYPIC ENGINEERING Co.,Ltd. Contract record no.: 2010450000007 Denomination of invention: Drum peletizing process of molten ammonium nitrate-urea slurry to produce granulated composite fertilizer Granted publication date: 20050629 License type: Exclusive License Open date: 20030319 Record date: 20100521 |
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Effective date of registration: 20160920 Address after: Shenzhen City, Guangdong province 518057 Keyuan Road, Nanshan District science and Technology Park 3 4 floor Patentee after: SHENZHEN BATIAN ECOTYPIC ENGINEERING Co.,Ltd. Patentee after: GUIZHOU BATIAN ECOLOGICAL ENGINEERING Co.,Ltd. Address before: Shenzhen City, Guangdong province 518057 Keyuan Road, Nanshan District science and Technology Park 3 4 floor Patentee before: SHENZHEN BATIAN ECOTYPIC ENGINEERING Co.,Ltd. |
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