CN102320875B - High tower-granulated sustained-release long-acting sulfur-based nitrogen-phosphor-potassium compound fertilizer and preparation method thereof - Google Patents
High tower-granulated sustained-release long-acting sulfur-based nitrogen-phosphor-potassium compound fertilizer and preparation method thereof Download PDFInfo
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- CN102320875B CN102320875B CN2011102587007A CN201110258700A CN102320875B CN 102320875 B CN102320875 B CN 102320875B CN 2011102587007 A CN2011102587007 A CN 2011102587007A CN 201110258700 A CN201110258700 A CN 201110258700A CN 102320875 B CN102320875 B CN 102320875B
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 91
- 238000002360 preparation method Methods 0.000 title claims abstract description 40
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title abstract description 12
- 238000013268 sustained release Methods 0.000 title abstract description 7
- 239000012730 sustained-release form Substances 0.000 title abstract description 7
- 239000011593 sulfur Substances 0.000 title abstract description 5
- 229910052717 sulfur Inorganic materials 0.000 title abstract description 5
- WZLMXYBCAZZIRQ-UHFFFAOYSA-N [N].[P].[K] Chemical compound [N].[P].[K] WZLMXYBCAZZIRQ-UHFFFAOYSA-N 0.000 title abstract 4
- 239000004202 carbamide Substances 0.000 claims abstract description 75
- -1 urea compound Chemical class 0.000 claims abstract description 51
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical class O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000000843 powder Substances 0.000 claims abstract description 36
- 239000012188 paraffin wax Substances 0.000 claims abstract description 31
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 26
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims abstract description 17
- 238000005469 granulation Methods 0.000 claims abstract description 17
- 230000003179 granulation Effects 0.000 claims abstract description 17
- 235000019837 monoammonium phosphate Nutrition 0.000 claims abstract description 17
- 239000006012 monoammonium phosphate Substances 0.000 claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 16
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 15
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 12
- 239000010457 zeolite Substances 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 11
- 239000008187 granular material Substances 0.000 claims description 56
- 238000002156 mixing Methods 0.000 claims description 31
- 230000002459 sustained effect Effects 0.000 claims description 25
- 208000006558 Dental Calculus Diseases 0.000 claims description 18
- 238000012216 screening Methods 0.000 claims description 18
- 239000002994 raw material Substances 0.000 claims description 17
- 230000005496 eutectics Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 7
- 230000004927 fusion Effects 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000003556 assay Methods 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- 235000013399 edible fruits Nutrition 0.000 claims description 4
- 244000037666 field crops Species 0.000 claims description 4
- 235000013311 vegetables Nutrition 0.000 claims description 4
- 238000013467 fragmentation Methods 0.000 claims description 3
- 238000006062 fragmentation reaction Methods 0.000 claims description 3
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 10
- 239000002689 soil Substances 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 abstract 2
- 229910052939 potassium sulfate Inorganic materials 0.000 abstract 2
- 235000011151 potassium sulphates Nutrition 0.000 abstract 2
- 239000003570 air Substances 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 abstract 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 12
- 239000005864 Sulphur Substances 0.000 description 7
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 6
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 6
- 235000011130 ammonium sulphate Nutrition 0.000 description 6
- 210000003608 fece Anatomy 0.000 description 5
- 239000010871 livestock manure Substances 0.000 description 5
- 235000015097 nutrients Nutrition 0.000 description 5
- 238000013270 controlled release Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 240000007594 Oryza sativa Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 231100000572 poisoning Toxicity 0.000 description 3
- 230000000607 poisoning effect Effects 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 239000012298 atmosphere Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000011268 mixed slurry Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- 244000061176 Nicotiana tabacum Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 240000000111 Saccharum officinarum Species 0.000 description 1
- 235000007201 Saccharum officinarum Nutrition 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a high tower-granulated sustained-release long-acting sulfur-based nitrogen-phosphor-potassium compound fertilizer and a preparation method thereof, and belongs to the field of compound fertilizers. The preparation method comprises the following steps of preparing urea compound fertilizer particles through a high tower granulation device, carrying out first coating of the urea compound fertilizer particles with paraffin, and then carrying out second surface coating with modified zeolite powder to obtain the high tower-granulated sustained-release long-acting sulfur-based nitrogen-phosphor-potassium compound fertilizer. The urea compound fertilizer particles obtained by high tower granulation comprises: by weight, 35 to 50 parts of urea, 20 to 25 parts of monoammonium phosphate, and 30 to 40 parts of potassium sulfate. A use amount of the paraffin is 0.5 to 1.0% of the weight of urea compound fertilizer particles obtained by high tower granulation. The modified zeolite powder comprises: by weight, 1 to 5% of zine stearate and 95 to 99% of zeolite powder. The high tower-granulated sustained-release long-acting sulfur-based nitrogen-phosphor-potassium compound fertilizer can be utilized in conjunction with a high tower granulation device, has good sustained-release effects, a high fertilizer utilization rate and high potassium sulfate content, and is be beneficial for protection of soil, air and water environments. The preparation method has simple processes and low costs.
Description
Technical field
The present invention is a kind of high tower-granulated sustained and preparation method thereof, belongs to mixed fertilizer.
Background technology
Element sulphur in the S-based compound fertilizer is the necessary the fourth-largest nutritive element of the plant growth behind nitrogen, phosphorus, potassium, and chloride ion content＜3% can effectively improve the lack of soil sulfur situation, for crop directly provides the sulphur nutrient.S-based compound fertilizer is wide for strong adaptability, the use range of crop and soil, is applicable to the fear-chlorion crops such as all kinds of food crop and cash crop and tobacco, sugarcane, potato, tealeaves, can be used as base manure, topdresses, seed manure and foliage top dressing.Very important effect is being brought into play in improvement to the quality of the raising of crop yield and agricultural-food.Therefore be widely applied.
But sulphur based compound fertilizer plant recovery of nutrient of the prior art only is 25%-35%, and wherein the N fertilizer utilization rate less than 30%, loses especially severe, and causes the pollution of soil pollution, atmospheric environment.
The production of sulfur-based compound fertilizer complex process, production energy consumption is high, and etching apparatus, waste resource cause production cost high, and contaminate environment.
Chinese patent CN 200510102650.8 discloses a kind of melt slime granulating composite fertilizer and manufacture method thereof, one of technical problem that solves is that traditional prilling process composite fertilizer's structure of producing is more loose, the fertilizer dissolving discharges very fast, fertilizer efficiency is decomposed loss piece, the problem that utilization rate of fertilizer is lower.The technical scheme that adopts is that manufacturing processed adopts high-temperature fusion urea to do carrier, raw material is merged evenly, through cat head spraying cooling granulating.Obtained preferably technique effect.But adopt that above-mentioned preparation method produces compound fertilizer production with tower granulation material product, slow release effect is not good enough.
Coating controlled-release fertilizer of the prior art, endoplasm type Controlled Release Fertilizer, stable Controlled Release Fertilizer, biological inhibition formulation Controlled Release Fertilizer, its coated slow-release material adopts sulphur or synthetic resins more, and wherein the sulphur film is easily broken, and the crops such as paddy rice class are easily produced the murder by poisoning side effect.Coated with resin is expensive and be difficult in degraded in soil.
High tower-granulated sustained has no reported in literature in the prior art.
Summary of the invention
The object of the invention is to avoid above-mentioned weak point of the prior art, and a kind of had good sustained release effect that can use with the high tower prilling matched with devices is provided, the fertilizer nutrient utilization ratio is high, and the vitriolate of tartar content in the compound manure is high; Technique is simple, and production cost is lower, is of value to long-acting sulfenyl nitrogen-phosphorus-potassium compound fertilizer material of high-tower slow-release of soil and atmosphere and water body environment protection and preparation method thereof.
Purpose of the present invention can reach by following measure:
High tower-granulated sustained of the present invention and preparation method thereof; it is characterized in that at first preparing high tower prilling urea compound fertilizer granule through the high tower prilling device; then the urea compound fertilizer particle is carried out paraffin and once coat to coat with the modified zeolite powder surface second and make, wherein:
Described high tower prilling urea compound fertilizer granule is comprised of following raw material in parts by weight:
Urea 35～50
Monoammonium phosphate 20～25
Vitriolate of tartar 30～40
Described paraffin once coats, and the consumption of paraffin is 0.5%～1.0% of high tower prilling urea compound fertilizer granule quality, and described modified zeolite powder is comprised of following raw material by weight percentage:
Zinic stearas 1～5
Zeolite powder 95～99
Its preparation method comprises the steps:
The preparation of step 1. high tower prilling urea compound fertilizer granule
A. urea melting
To drop in the fusion tank according to the urea of drafting the prescription accurate-metering, and be heated to 125 ℃～135 ℃, standby one-level is mixed;
B. monoammonium phosphate, vitriolate of tartar preheating
To drop in the one-level mixing tank according to the monoammonium phosphate of drafting the prescription accurate-metering, vitriolate of tartar, be preheated to 40 ℃～60 ℃, for subsequent use;
C. low temperature eutectic preparation
The fusing urea for preparing in a step is sent into the one-level mixing tank, after mixing with monoammonium phosphate, the vitriolate of tartar of preheating in the b step, drop in the secondary mixing tank, further mix, slip mixing time＜4min forms the low temperature eutectic with certain fluidity energy, and slurry temperature is controlled at 110 ℃-120 ℃, standby granulation is used;
D. sprinkling pelleting
With the low temperature eutectic for preparing among the step c, by the granulation of high tower prilling system, be cooled under the tower granule materials temperature＜65 ℃,
Rotary drum cooling temperature＜40 ℃ make high tower prilling urea compound fertilizer granule, standby screening;
E. screening
The high tower prilling urea compound fertilizer granule of steps d preparation after screening, must meet the high tower prilling urea compound fertilizer granule of product requirement granularity, standbyly once coats, do not meet the material crushing of product requirement granularity after, return the one-level mixing tank;
Step 2. paraffin once coats
The high tower prilling urea compound fertilizer granule that makes in the step 1 enters coating machine, with melt paraffin the fertiliser granulates surface is coated;
Step 3. modified zeolite powder secondary coats
Through the fertiliser granulates that step 2 once coats, enter in the coating machine, coat with the modified zeolite powder secondary; After the assay was approved, metering, packing namely get high tower-granulated sustained of the present invention.
The present invention at first prepares high tower prilling urea compound fertilizer granule through the high tower prilling device, then the urea compound fertilizer particle is carried out paraffin and once coats to coat with the modified zeolite powder surface second and make.It mainly is the characteristic that can form the suspended solid mixed slurry with the good eutectic of flowing property after utilizing urea melting liquid and monoammonium phosphate, vitriolate of tartar mixing, and pass through prilling spry, mixed slurry is sprayed in the prilling tower, make it in the process of gravity landing, carry out heat exchange with the airflow that rises, cooling curing forms particle, obtains Nutrient distribution uniformly with the compound manure of Pinhole-shaped.The high tower prilling technology has been simplified the granulation production technique, saves energy consumption for drying, mellow and full, the prevented from caking of particle, and production technique is easy, and useful environment protection can access Nutrient distribution uniformly with high nitrogen, the high-concentration compound fertilizer material of Pinhole-shaped.
Then the urea compound fertilizer particle being carried out paraffin once coats with the modified zeolite powder surface second and coats.Avoided the sulphur film easily broken, and the crops such as paddy rice class have easily been produced the murder by poisoning side effect.Coated with resin is expensive and be difficult for drawback in degraded in soil.
Made high tower-granulated sustained of the present invention.
Purpose of the present invention can also reach by following measure:
High tower-granulated sustained of the present invention and preparation method thereof, described raw material technical indicator is as follows:
Urea; Grain diameter is less than 2mm, Biuret Content＜1.5%, nitrogen content 〉=46%
Zeolite powder: granularity 60-100 order.
High tower-granulated sustained of the present invention and preparation method thereof, described high tower prilling urea compound fertilizer granule is comprised of following raw material in parts by weight:
Urea 35～45
Monoammonium phosphate 20～25
Vitriolate of tartar 35～40
Described paraffin once coats, and the consumption of paraffin is 0.5%～1.0% of high tower prilling urea compound fertilizer granule quality,
Described modified zeolite powder is comprised of following raw material by weight percentage:
Zinic stearas 1～5
Zeolite powder 95～99.
It is preferred technical scheme.
High tower-granulated sustained of the present invention and preparation method thereof, described high tower prilling urea compound fertilizer granule is comprised of following raw material in parts by weight:
Urea 35
Monoammonium phosphate 25
Vitriolate of tartar 40
Described paraffin once coats, and the consumption of paraffin is 0.8% of high tower prilling urea compound fertilizer granule quality,
Described modified zeolite powder is comprised of following raw material by weight percentage:
Zinic stearas 5
Zeolite powder 95.
It is optimum technical scheme.
High tower-granulated sustained of the present invention and preparation method thereof, described preparation method comprises the steps:
The preparation of step 1. high tower prilling urea compound fertilizer granule
A. urea melting
To drop in the fusion tank according to the urea of drafting the prescription accurate-metering, and be heated to 133 ℃, standby one-level is mixed;
B. calcium sulfate, ammonium sulfate preheating
To drop in the one-level mixing tank according to the calcium sulfate of drafting the prescription accurate-metering, ammonium sulfate, be preheated to 56 ℃, for subsequent use;
C. low temperature eutectic preparation
The fusing urea for preparing in a step is sent into the one-level mixing tank, after mixing with calcium sulfate, the ammonium sulfate of preheating in the b step, drop in the secondary mixing tank, further mix, slip mixing time＜4min forms the low temperature eutectic with certain fluidity energy, and slurry temperature is controlled at 116 ℃, standby granulation is used;
D. sprinkling pelleting
With the low temperature eutectic for preparing among the step c, by the granulation of high tower prilling system, be cooled under the tower granule materials temperature＜65 ℃,
Rotary drum cooling temperature＜40 ℃ make high tower prilling urea compound fertilizer granule, standby screening;
E. screening
The high tower prilling urea compound fertilizer granule of steps d preparation after screening, must meet the high tower prilling urea compound fertilizer granule of product requirement granularity, standby once coating, and screenings returns the one-level mixing tank after fragmentation;
Step 2. paraffin once coats
The high tower prilling urea compound fertilizer granule that makes in the step 1 enters coating machine, with melt paraffin the fertiliser granulates surface is coated; The consumption of paraffin is 0.5%～1.0% of high tower prilling urea compound fertilizer granule quality,
Step 3. modified zeolite powder secondary coats
Through the fertiliser granulates that step 2 once coats, enter in the coating machine, coat with the modified zeolite powder secondary; Described modified zeolite powder is comprised of following raw material by weight percentage:
Zinic stearas 1～5
Zeolite powder 95～99
After the assay was approved, metering, packing namely get high tower-granulated sustained of the present invention.
Preferred preparation method.
The application of high tower-granulated sustained of the present invention; it is characterized in that being applicable to various field crops and vegetables and fruit tree uses; the average utilization rate of fertilizer 113.3%-121% that improves; farm crop are on average improved output 4.7%-12.9%, on average improve output 10.3-28.7% for greengrocery.
The disclosed technical scheme of high tower-granulated sustained of the present invention and preparation method thereof has following positively effect compared to existing technology:
1. a kind of had good sustained release effect that can use with the high tower prilling matched with devices is provided, and the fertilizer nutrient utilization ratio is high, and the vitriolate of tartar content in the compound manure is high; Technique is simple, and production cost is lower, is of value to long-acting sulfenyl nitrogen-phosphorus-potassium compound fertilizer material of high-tower slow-release of soil and atmosphere and water body environment protection and preparation method thereof.
2. the high tower prilling technology has been simplified the granulation production technique, saves energy consumption for drying, mellow and full, the prevented from caking of particle, and production technique is easy, and useful environment protection can access Nutrient distribution uniformly with high nitrogen, the high-concentration compound fertilizer material of Pinhole-shaped.
3. paraffin, modified zeolite secondary coat, and have avoided the sulphur film easily broken, and the crops such as paddy rice class are easily produced the murder by poisoning side effect.Coated with resin is expensive and be difficult for drawback in degraded in soil.
4. the high tower-granulated sustained that makes; being applicable to various field crops and vegetables and fruit tree uses; the average utilization rate of fertilizer 113.3%-121% that improves on average improves output 4.7%-12.9% to farm crop, on average improves output 10.3-28.7% for greengrocery.
Description of drawings
Fig. 1 is high tower-granulated sustained preparation method process flow diagram of the present invention.
Embodiment
The present invention will now be further detailed embodiment:
Embodiment 1 prepares high tower-granulated sustained of the present invention in accordance with the following steps
The preparation of step 1. high tower prilling urea compound fertilizer granule
A. urea melting
To drop in the fusion tank according to the urea of drafting the prescription accurate-metering, and be heated to 133 ℃, standby one-level is mixed;
B. calcium sulfate, ammonium sulfate preheating
To drop in the one-level mixing tank according to the calcium sulfate of drafting the prescription accurate-metering, ammonium sulfate, be preheated to 56 ℃, for subsequent use;
C. low temperature eutectic preparation
The fusing urea for preparing in a step is sent into the one-level mixing tank, after mixing with calcium sulfate, the ammonium sulfate of preheating in the b step, drop in the secondary mixing tank, further mix, slip mixing time＜4min forms the low temperature eutectic with certain fluidity energy, and slurry temperature is controlled at 116 ℃, standby granulation is used;
D. sprinkling pelleting
With the low temperature eutectic for preparing among the step c, by the granulation of high tower prilling system, be cooled under the tower granule materials temperature＜65 ℃,
Rotary drum cooling temperature＜40 ℃ make high tower prilling urea compound fertilizer granule, standby screening;
E. screening
The high tower prilling urea compound fertilizer granule of steps d preparation after screening, must meet the high tower prilling urea compound fertilizer granule of product requirement granularity, standby once coating, and screenings returns the one-level mixing tank after fragmentation;
Step 2. paraffin once coats
The high tower prilling urea compound fertilizer granule that makes in the step 1 enters coating machine, with melt paraffin the fertiliser granulates surface is coated; The consumption of paraffin is 0.5%～1.0% of high tower prilling urea compound fertilizer granule quality,
Step 3. modified zeolite powder secondary coats
Through the fertiliser granulates that step 2 once coats, enter in the coating machine, coat with the modified zeolite powder secondary; Described modified zeolite powder is comprised of following raw material by weight percentage:
Zinic stearas 1～5
Zeolite powder 95～99
After the assay was approved, metering, packing namely get high tower-granulated sustained of the present invention.
Embodiment 2～embodiment 7
According to embodiment 1 forwarding method and step, according to the prescription of table 1, prepare high tower-granulated sustained of the present invention
Table 1
| Raw material | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 |
| Urea | ?35 | ?45 | ?40 | ?38 | ?48 | ?50 |
| Monoammonium phosphate | ?25 | ?20 | ?24 | ?23 | ?21 | ?20 |
| Vitriolate of tartar | ?40 | ?35 | ?36 | ?39 | ?31 | ?30 |
| Paraffin | ?0.5 | ?0.6 | ?0.8 | ?0.7 | ?0.9 | ?1.0 |
| Zinic stearas | ?1 | ?2 | ?3 | ?4 | ?2 | ?5 |
| Zeolite powder | ?99 | ?98 | ?97 | ?96 | ?98 | ?95 |
The high tower-granulated sustained that embodiment 1～embodiment 7 makes; being applicable to various field crops and vegetables and fruit tree uses; the average utilization rate of fertilizer 113.3%-121% that improves; farm crop are on average improved output 4.7%-12.9%, on average improve output 10.3-28.7% for greengrocery.
Claims (4)
1. the preparation method of a high tower-granulated sustained; it is characterized in that at first preparing high tower prilling urea compound fertilizer granule through the high tower prilling device; then the urea compound fertilizer particle is carried out paraffin and once coat to coat with the modified zeolite powder surface second and make, wherein:
Described high tower prilling urea compound fertilizer granule is comprised of following raw material in parts by weight:
Urea 35～45
Monoammonium phosphate 20～25
Vitriolate of tartar 35～40
Described paraffin once coats, and the consumption of paraffin is 0.5%～1.0% of high tower prilling urea compound fertilizer granule quality,
Described modified zeolite powder is comprised of following raw material by weight percentage:
Zinic stearas 1～5
Zeolite powder 95～99
Described raw material technical indicator is as follows:
Urea; Grain diameter is less than 2mm, Biuret Content＜1.5%, nitrogen content 〉=46%
Zeolite powder: granularity 60-100 order;
Its preparation method comprises the steps:
The preparation of step 1. high tower prilling urea compound fertilizer granule
A. urea melting
To drop in the fusion tank according to the urea of drafting the prescription accurate-metering, and be heated to 125 ℃～135 ℃, standby one-level is mixed;
B. monoammonium phosphate, vitriolate of tartar preheating
To drop in the one-level mixing tank according to the monoammonium phosphate of drafting the prescription accurate-metering, vitriolate of tartar, be preheated to 40 ℃～60 ℃, for subsequent use;
C. low temperature eutectic preparation
The fusing urea for preparing in a step is sent into the one-level mixing tank, after mixing with monoammonium phosphate, the vitriolate of tartar of preheating in the b step, drop in the secondary mixing tank, further mix, slip mixing time＜4min forms the low temperature eutectic with certain fluidity energy, and slurry temperature is controlled at 110 ℃-120 ℃, standby granulation is used;
D. sprinkling pelleting
With the low temperature eutectic for preparing among the step c, by the granulation of high tower prilling system, be cooled under the tower granule materials temperature＜65 ℃,
Rotary drum cooling temperature＜40 ℃ make high tower prilling urea compound fertilizer granule, standby screening;
E. screening
The high tower prilling urea compound fertilizer granule of steps d preparation after screening, must meet the high tower prilling urea compound fertilizer granule of product requirement granularity, standbyly once coats, do not meet the material crushing of product requirement granularity after, return the one-level mixing tank;
Step 2. paraffin once coats
The high tower prilling urea compound fertilizer granule that makes in the step 1 enters coating machine, with melt paraffin the fertiliser granulates surface is coated;
Step 3. modified zeolite powder secondary coats
Through the fertiliser granulates that step 2 once coats, enter in the coating machine, coat with the modified zeolite powder secondary; After the assay was approved, metering, packing namely get high tower-granulated sustained of the present invention.
2. according to claim 1 the preparation method of high tower-granulated sustained is characterized in that described high tower prilling urea compound fertilizer granule is comprised of following raw material in parts by weight:
Urea 35
Monoammonium phosphate 25
Vitriolate of tartar 40
Described paraffin once coats, and the consumption of paraffin is 0.8% of high tower prilling urea compound fertilizer granule quality,
Described modified zeolite powder is comprised of following raw material by weight percentage:
Zinic stearas 5
Zeolite powder 95.
3. according to claim 1 the preparation method of high tower-granulated sustained is characterized in that described preparation method comprises the steps:
The preparation of step 1. high tower prilling urea compound fertilizer granule
A. urea melting
To drop in the fusion tank according to the urea of drafting the prescription accurate-metering, and be heated to 133 ℃, standby one-level is mixed;
Monoammonium phosphate, vitriolate of tartar preheating
To drop in the one-level mixing tank according to the monoammonium phosphate of drafting the prescription accurate-metering, vitriolate of tartar, be preheated to 56 ℃, for subsequent use;
C. low temperature eutectic preparation
The fusing urea for preparing in a step is sent into the one-level mixing tank, after mixing with monoammonium phosphate, the vitriolate of tartar of preheating in the b step, drop in the secondary mixing tank, further mix, slip mixing time＜4min forms the low temperature eutectic with certain fluidity energy, and slurry temperature is controlled at 116 ℃, standby granulation is used;
D. sprinkling pelleting
With the low temperature eutectic for preparing among the step c, by the granulation of high tower prilling system, be cooled under the tower granule materials temperature＜65 ℃,
Rotary drum cooling temperature＜40 ℃ make high tower prilling urea compound fertilizer granule, standby screening;
E. screening
The high tower prilling urea compound fertilizer granule of steps d preparation after screening, must meet the high tower prilling urea compound fertilizer granule of product requirement granularity, standby once coating, and screenings returns the one-level mixing tank after fragmentation;
Step 2. paraffin once coats
The high tower prilling urea compound fertilizer granule that makes in the step 1 enters coating machine, with melt paraffin the fertiliser granulates surface is coated; The consumption of paraffin is 0.5%～1.0% of high tower prilling urea compound fertilizer granule quality,
Step 3. modified zeolite powder secondary coats
Through the fertiliser granulates that step 2 once coats, enter in the coating machine, coat with the modified zeolite powder secondary; Described modified zeolite powder is comprised of following raw material by weight percentage:
Zinic stearas 1～5
Zeolite powder 95～99
After the assay was approved, metering, packing namely get high tower-granulated sustained of the present invention.
4. according to the application of the high tower-granulated sustained of the method for claim 1 preparation; it is characterized in that being applicable to various field crops and vegetables and fruit tree uses; the average utilization rate of fertilizer 113.3%-121% that improves; farm crop are on average improved output 4.7%-12.9%, on average improve output 10.3-28.7% for greengrocery.
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| CN103159549A (en) * | 2012-12-26 | 2013-06-19 | 施可丰化工股份有限公司 | Preparation method of slow-release long-acting sulfur-based nitrogen potassium compound fertilizer |
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| CN100503524C (en) * | 2005-09-13 | 2009-06-24 | 史丹利化肥股份有限公司 | Melt slime granulating composite fertilizer and its production method |
| CN101348395B (en) * | 2007-08-15 | 2011-05-11 | 山东金正大生态工程股份有限公司 | Aqueous polymer-olefin dual-layer coated controlled release fertilizer and preparation thereof |
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Application publication date: 20120118 Assignee: Stanley chemical fertilizer is when positive Co., Ltd Assignor: Stanley Fertilizer Stock Co., Ltd. Contract record no.: 2014420000179 Denomination of invention: High tower-granulated sustained-release long-acting sulfur-based nitrogen-phosphor-potassium compound fertilizer and preparation method thereof Granted publication date: 20130109 License type: Exclusive License Record date: 20141009 |
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Address after: 276700 Linshu Chang Linzhu County, Linyi City, East Street, East first Patentee after: STANLEY agricultural group Limited by Share Ltd Address before: 276700 Linshu Chang Linzhu County, Linyi City, East Street, East first Patentee before: Stanley Fertilizer Stock Co., Ltd. |