CN1654439A - Method for producing mixed high-concentration slow-release fertilizer - Google Patents

Method for producing mixed high-concentration slow-release fertilizer Download PDF

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CN1654439A
CN1654439A CNA2005100027325A CN200510002732A CN1654439A CN 1654439 A CN1654439 A CN 1654439A CN A2005100027325 A CNA2005100027325 A CN A2005100027325A CN 200510002732 A CN200510002732 A CN 200510002732A CN 1654439 A CN1654439 A CN 1654439A
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fertilizer
mix
polymers
release fertilizer
coating
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CN100363310C (en
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张夫道
姚青松
王玉军
刘秀梅
张建峰
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SOIL AND FERTILIZER INST CHINE
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SOIL AND FERTILIZER INST CHINE
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Abstract

The mixed and concentrated fertilizer is produced through selecting urea, monoammonium phosphate and potassium chloride as material, coating urea with different coating agent for releasing in different stages, mixing monoammonium phosphate and potassium chloride with binding agent and pelletizing for certain retarded releasing performance, and mixing these two groups of fertilizer. It has N+P2O5+K2O content of 45-50 wt%. The mixed and concentrated fertilizer has the advantages of both delayed releasing fertilizer and composite fertilizer and is suitable for being applied to wheat, corn and rice.

Description

Method for producing mixed high-concentration slow-release fertilizer
The invention belongs to agricultural, ecotope field.
In compound (mixing) fertiliser production, N+P 2O 5+ K 2The total available nutrient content of O 〉=45% is called high density multiple (mixing) fertile (seeing the fertile standard GB15063-2001 of national compound).High-concentration compound fertilizer adopts the technology of spray granulating basically, for example N 15-P 2O 515-K 2O 15 total nutrient content are 45% three element compound fertilizer, the N 16-P that Russia produced in recent years 2O 516-K 2O 16 total nutrient content are 48% three element compound fertilizer.Adopt production of compound fertilizer technology, if will produce N+P 2O 5+ K 2O total nutrient content is 45% element fertilizer, from the angle of raw material, need to use urea, diammonium phosphate and Repone K, and must use adhesive for granulating, otherwise granulating rate has only about 50%, and cost improves greatly; And urea is pulverized easily moisture absorption caking of back, especially in the big regional moisture absorption of southern atmospheric moisture more very.The kind that slow release fertilizer is produced at present both at home and abroad has only coated carbamide, the coating diammonium phosphate, slow release fertilizer as for element, the total available nutrient content of nitrogen phosphorus potassium all is lower than 45%, and, the equipment that is adopted is essentially the spouted equipment of fluidized-bed, and the slow-release fertilizer production cost increases by 40 percentage points at least, so be difficult to apply.
The objective of the invention is to get the two advantage of slow release fertilizer coating technology and composite fertilizer technology, coating combines with gluing, produces nitrogen (N), phosphorus (P 2O 5), potassium (K 2O) mixed high-concentration slow-release fertilizer of total nutrient content 45%~50%, the production cost of reduction slow release fertilizer.
Principle of the present invention: the core of slow release fertilizer technology is that the rate of release or the title of control nitrogen nutrient discharges the period, and phosphorus, potassium mainly are to reduce fixing in soil, and its purpose is to improve the npk nutrient utilization ratio, to reduce the loss.The present invention adopts the direct film-coating technique of urea, phosphorus, potash fertilizer adding adhesive for granulating wrap up mineral wax mixture after being prepared as rounded grain shape binary compound fertilizer, again according to the demand percentage of Different Crop to nitrogen, phosphorus, potassium, with coated carbamide and phosphorus, the blending in proportion of potassium compound fertilizer, become the high-concentration slow-release fertilizer of crop special use.
Detailed description of the present invention
1, accompanying drawing 1 is seen in technical process.
2, main technique route
2.1 the selection of raw material
(1) urea: particle diameter 1.0~5.6mm, nitrogenous (N) amount 46%.
(2) monoammonium phosphate: powdery, cross 100 mesh sieve holes (sieve diameter 0.149mm); Contain P 2O 545%, contain N 11%.
(3) Repone K: select Russia or homemade white Repone K for use, pulverized 100 mesh sieve holes (sieve diameter 0.149mm), contain K 2O 60%.Not selecting Canadian red Repone K for use, is a kind of fertilizer dispersion agent that adds in addition because of wherein red color.Because of Repone K contains Cl -Ion is so only be applicable to non-fear-chlorion crop.
2.2 the selection of fertilizer envelope agent and gluing (bonding) agent
2.2.1 urea coated dose selection
Urea coatedly choose any in following 5 kinds of coating cementing agents wantonly:
(1) nano level humic acids mixed polymer fertilizer coating cementing agent (application number: 02123522.8, publication number: CN1390812A sees the application for patent that the inventor submitted on July 2nd, 2002);
(2) nano level waste plastic-starch mixed polymer fertilizer coating cementing agent (application number: 02125678.0, publication number: CN1388169A sees the application for patent that the inventor submitted on July 26th, 2002);
(3) nano level clay-polyester mixed polymer fertilizer coating cementing agent (application number: 02126009.5, publication number: CN1414033A, the patent No.: ZL02126009.5 sees the application for patent that the inventor submitted on August 9th, 2002);
(4) nano level sulfonated lignin mixed polymer fertilizer coating cementing agent (application number: 02149247.6, publication number: CN1417173A, the patent No.: ZL02149247.6 sees the number of patent application that the inventor submitted on November 11st, 2002);
(5) nano level alkenes compounds-starch mixed polymer fertilizer coating cementing agent (application number: 200310116857.2, publication number: CN1546543A sees the application for patent that the inventor submitted on December 1st, 2003).
2.2.2 the selection of fertile glued (bonding) agent of compound
Organic fertilizer adhesive for granulating CF is selected in phosphorus, potassium compound felted slow-release fertilizer material granulation gluing (bonding) agent for use 2(application number: 02123522.8, publication number: CN1390812A sees the application for patent that the inventor submitted on July 2nd, 2002).Test-results, with the felted slow-release fertilizer material of this adhesive preparation in dryland soil (water content be maxmun field capacity 70%~80%) nitrogen discharged more than 98% in 30~80 days, so this jointing compound has certain sustained release performance.
2.3 slow release fertilizer production technique
2.3.1 urea coated equipment
2.3.1.1 coating dilution agent jar
This device is 1m 3The Sandwich pot of belt stirrer feeds circulating hot water and is heated to 50 ℃~60 ℃ between interlayer; Under 20 ℃~35 ℃ conditions, dilute.The coating agent is squeezed in the jar with pressure pump, and thin up is to solid content 5%~8% under agitation condition.
2.3.1.2 coating disk
Urea coated disk is transformed on compound fertilizer pelletizing disk basis and is formed (seeing accompanying drawing 2), by forming with the lower section:
(1) disk: diameter 2000~4000mm, can determine according to output;
(2) flight: wide by 150 * high by 150 * long 500~1000mm, play a part to intercept material and raise up;
(3) transmission system: comprise motor, speed regulator, belt pulley, disc rotation speed 30~22r/min;
(4) fog system: form by air compressor, spray gun (nozzle bore 5~10 μ m);
(5) face powder system: face powder pipe, hertz oscilltor;
(6) hot air drying system: electric heating tube, blower, temperature regulator.
2.3.1.3 coating cylinder
The coating cylinder is mainly by form (seeing accompanying drawing 3) with the lower section
A. rotate the coating tube: drum diameter 1500mm, long 8000mm, be divided into two sections, preceding half section is the coating chamber, and the second half section is the face powder kiln, and the 4000mm place is welded with general circular baffle in the middle of inwall, high 100mm, inwall also is welded with 12 row's material lifting flightss, the long 250~300mm of material lifting flights, high 150mm, be staggered, coating tube feeding end puts in a pipe along axis direction, and pipe end vertical axis direction is welded with coating agent spray line (stainless steel tube), long 800mm, diameter is 25mm, 2 shower nozzles are installed at the pipe two ends, nozzle bore 5~10 μ m, coating agent behind the dilute with water (in the ascending pipe of pressure 〉=0.4MPa), is vaporific sprinkling (seeing accompanying drawing 3) with pressure pump.
B. pressurized spray device: with pressure pump pressurization, pressure 〉=0.4Mpa, nozzle bore 5~10 μ m.
C, face powder drying installation.
2.3.2 urea coated technology
(1) urea coated
Urea is imported in disk (seeing accompanying drawing 2) or the coating cylinder (seeing accompanying drawing 3), disk or cylinder rotate on one side, use a kind of coating agent with once urea coated of the coating agent after the nozzle spray painting dilution of pressure 〉=0.4Mpa (the nano level humic acids mixes polymers, nano level waste plastic-starch mixes polymers, nano level clay-polyester mixed polymer, the mixed polymers of nano level sulfonated lignin, the mixed polymers of nano level alkenes compounds-starch), consumption is 1%~2% of a urea quality, is rotated further disk to urea granules and all is wrapped.
(2) face powder
Start face powder pipe switch, along with the rotation of disk or cylinder, pounce on the talcum powder that spread 200 mesh sieve holes (sieve diameter 0.074mm), consumption is 3%~5% of a urea quality, all be stained with talcum powder to the coated carbamide surface, and have a small amount of unnecessary talcum powder in dish with till the material rotation.
(3) warm air drying: start hot air drying system, with 100 ℃ of left and right sides warm air dryings.
2.3.3 phosphorus potassium compound slow release fertilizer production technique
2.3.3.1 raw material mixes
Adopt the asymmetric double spiral shell to execute the mixer batch mixing, Repone K is (with K 2O meter) with monoammonium phosphate (with P 2O 5Meter) mass ratio is 1: 0.4~0.6 (K 2O: P 2O 5=1: 0.4~0.6).Add adhesive for granulating, consumption is 0.5%~1.0% of a fertilizer butt quality, and the thin up multiple decide on the raw material water content, generally dilute 8~10 times after use.
2.3.3.2 production sequence
(1) choosing grain binding agent: selection organic fertilizer adhesive for granulating CF2 (application number: 02123522.8, publication number: CN1390812A sees the application for patent that the inventor submitted on July 2nd, 2002).
(2) granulating equipment: can select granulating disc or rotary drum granulator for use.
(3) paraffin coating agent (number of patent application: 200410101497.2, see the application for patent that on December 22nd, 2004 submitted to).
Preparation is divided into 2 operations: the preparation of paraffin emulsifying dispersant, the preparation of paraffin-kaolin mixture.
A. the preparation of paraffin emulsifying dispersant:
In reactor, add industrial water purification 1000kg, be heated to about 90 ℃, start agitator, the sodium oleate that adds quality 8%~10%, fully after the dissolving, cooling also maintains the temperature at 45 ℃~50 ℃ (being no more than 50 ℃), slowly adds polyoxyethylenated alcohol sodium sulfate, and add-on is 10%~15% of a quality; The dissolving back adds quality 15%~20% sorbitol anhydride oleate Soxylat A 25-7 fully; After the dissolving, add quality 15%~18% Sodium dodecylbenzene sulfonate.All be cooled to below 40% after the dissolving, add quality 8%~10% industrial spirit (95%), stirring promptly becomes paraffin emulsifier.
B. the preparation of emulsified olefin
Add industrial spirit (95%) 1000kg in reactor, No. zero diesel oil 500kg mixes post-heating to 65 ℃~70 ℃.Start agitator, add 48~65 degree paraffin 1000kg, add the paraffin emulsifying dispersant of paraffin quality 15%~30% after all dissolving to paraffin, stir, solution becomes oyster white, shows that emulsification is complete, becomes paraffin wax emulsion.Add paraffin quality 25%~30% again and cross the kaolin (sieve diameter 0.044mm) in 300 mesh sieve holes, promptly become emulsified olefin-kaolin mixture solution after stirring.
C. the preparation of nanometer-submicron level paraffin coating agent.
Above-mentioned emulsified olefin-kaolin mixed solution is put into the High shear device that the present invention uses, 20,000 r/min VELOCITY SHEAR 5~10 minutes, promptly become nanometer-submicron level emulsified olefin-kaolin mixture solution, be called nanometer-submicron level mineral wax mixture enveloping agent mother liquor again.
D. High shear device
This equipment is mainly by form (seeing accompanying drawing 4) with lower member:
A. motor: Jiangsu star-wheel high-speed electric expreess locomotive device fabrication company makes.
B. cutter shaft and high-shear cutter: adopt the processing and manufacturing of high chrome high-nickel austenitic stainless steel material, shear knife is a spination.Cutter shaft is connected with motor output shaft by three-jaw chuck.
C. stainless steel tank body: diameter 500mm, high 700mm.
D. guide shell: in be lining in the effect that water conservancy diversion is played at the tank body middle part, make material be turbulence state circulation high-shear, barrel diameter 200mm, high 350mm.
E. capping: the stainless steel cover periphery reaches and is coupling to touch partly and all is stained with sealing-ring, plays airtight effect.
F. advance rice output outlet: opening for feed is positioned at tank body top, and discharge port is positioned at the tank body bottom.
(4) operation
The material that adds adhesive for granulating and mix is entered rotary drum granulator by rotary conveyor; Send into the further granulation of rotary drying drum after the granulation, drying; Dried granulation fertilizer enters cooling cylinder; Then by trommel screen screening, recycle less than the 1mm powder with greater than the large-particle fertilizer returning charge of 5mm.The phosphorus potassium compound fertilizer of diameter 1~5mm is delivered into paraffin coating cylinder with conveyor.
The coating cylinder is mainly by forming with the lower section:
A. paraffin coating agent pretreatment unit: be 1M 3The Sandwich pot of belt stirrer feeds circulating hot water and is heated to 50 ℃~60 ℃ between interlayer, the agent of paraffin coating is squeezed in the jar with pressure pump, thin up to 5~6 times.
B. pressurized spray device: with pressure pump pressurization, pressure 〉=0.4Mpa, 5~10 microns of nozzle bores.
C. rotate the coating tube: see accompanying drawing 3.
D. coating operation: a. starts the coating rotating cylinder; B. with the belt hauler phosphorus potassium compound fertilizer is sent into the coating cylinder, because the turning effort of cylinder, flight is kicked up fertiliser granulates in the tube in cylinder; C. start the pressurized spray device, the coating agent is vaporific and contacts with the fertiliser granulates of kicking up that rolls, and with its surface wettability, forms certain thickness coating, and paraffin coating agent mother liquor consumption is 1%~2% of a fertilizer butt quality; D. be blown into 80 ℃~100 ℃ hot blasts from coating tube exit end, after the moistening film drying cooling, paraffin-kaolin mixture is wrapped in the fertiliser granulates surface.
2.3.4 mix type slow release fertilizer complete processing
According to Different Crop to nitrogen (N), phosphorus (P 2O 5), potassium (K 2O) demand percentage is carried out blending with coated carbamide and mineral wax mixture parcel phosphorus potassium compound fertilizer.
Description of drawings:
Accompanying drawing 1: the technological process of production figure of mixed high-concentration slow-release fertilizer.
Accompanying drawing 2: coating disk
Accompanying drawing 3: coating cylinder
Accompanying drawing 4: High shear device
Advantage of the present invention:
The chief of 1, the present invention is integrated slow release fertilizer and two kinds of technology of complex fertilizer technology both can keep nitrogen slowly to discharge Advantage, kept again Chemical Mixed Fertilizer according to the flexible superiority of prescription of Different Crop, different soils demand. Can use according to difference The demand at family is produced.
2, can solve the high concentration nutrient granulation difficulty of complex fertilizer existence and the problem that urea is pulverized the rear moisture absorption.
3, adopt disk or cylinder coating, be conducive to existing complex fertilizer technology upgrading.
4, because of nutrient concentration height, amount of application is few, can reduce freight volume.
Embodiment one: adopt granulating disc to produce mixed high-concentration slow-release fertilizer
1, coated carbamide production sequence
Urea coated in diameter 2000mm disk, implement (seeing accompanying drawing 2).
(1) humic acids mixes the production of polymers coated carbamide
((diameter 3.35~5.6mm) each 300kg, nitrogenous (N) amount is 46% for diameter 1~3mm) or granular urea to take by weighing common urea respectively.Put into disk respectively, rotary disk (rotating speed 17r/min), urea granules is run into and is entered the court after flight is obstructed, mix the polymers coating cementing agent to the urea granules that raises up with pressure 0.5Mpa, aperture 10 μ m nozzle spray painting humic acidses, consumption 4.5kg (solid content 20%) is diluted with water to the 13.5kg aqueous solution and uses.Along with disk rotation and urea granules constantly raise up, fall and roll, humic acids mixes the polymers coating cementing agent and fully is wrapped in the urea granules surface.When between urea granules, adhesion phenomenon occurring, start the face powder system, pounce on and spread 200 mesh sieve holes (sieve diameter 0.074mm) talcum powder, consumption 9kg.Start the electric heating drying system, promptly become humic acids with 100 ℃ of left and right sides hot blast dryings and mix the polymers coated carbamide.
(2) waste plastic-starch mixes the production of polymers coated carbamide
Mix polymers coated carbamide production method by present embodiment (1) humic acids and produce, only mix the polymers coating cementing agent and replace humic acids wherein to mix the polymers coating cementing agent with waste plastic-starch.Difference is that the mixed polymers coating cementing agent of waste plastic-starch dilutes under 20 ℃~35 ℃ conditions.
(3) clay-polyester mixed polymer coated carbamide is produced
Mix polymers coated carbamide production method by present embodiment (1) humic acids and produce, only replace humic acids wherein to mix the polymers coating cementing agent with clay-polyester mixed polymer coating cementing agent.
(4) sulfonated lignin mixes the production of polymers coated carbamide
Mix polymers coated carbamide production method by present embodiment (1) humic acids and produce, only mix the polymers coating cementing agent and replace humic acids wherein to mix the polymers coating cementing agent with sulfonated lignin.
(5) alkenes compounds-starch mixes the production of polymers coated carbamide
Mix polymers coated carbamide production method by present embodiment (1) humic acids and produce, only mix the polymers coating cementing agent and replace humic acids wherein to mix the polymers coating cementing agent with alkenes compounds-starch.
2, phosphorus potassium felted slow-release fertilizer material is produced
2.1.1 starting material
(1) monoammonium phosphate: homemade, contain P 2O 545%, contain N 11%; Powdery is crossed 100 mesh sieve holes.
(2) Repone K: Russia produces, and white contains K 2O 60%; Cross 100 mesh sieve holes.
(3) glued (bonding) agent: use organic fertilizer adhesive for granulating CF2, solid content 8%~10%.
(4) paraffin-kaolin mixture coating agent: paraffinicity about 25%.
2.2.2 production process
2.2.2.1 granulating disc production technique
(1) take by weighing oven dry, pulverized 100 mesh sieve hole Repone K 180kg and (contained K 2O108kg), monoammonium phosphate 120Kg (contains P 2O 554Kg), K 2O and P 2O 5Ratio be 1: 0.5.Behind the even blend, add organic fertilizer adhesive for granulating CF2, consumption is 3kg, thin up is to 36kg, puts into disk with the material thorough mixing after evenly, starts disk (rotating speed 17r/min), along with the rotation of material, raise up and roll, become rounded grain by powder gradually.Sieve after the oven dry, 1~5mm rounded grain compound is fertile to be 292.5kg (be granulating rate account for raw materials quality 97.5%).
(2) the phosphorus potassium compound fertilizer that will dry back 1~5mm diameter is reentered in the disk, and rotary disk (rotating speed 17r/min) is with nozzles spray paraffin-kaolin mixture coating agent of pressure 0.5Mpa, aperture 10 μ m.Coating agent consumption 3.0kg uses after being diluted to the 12kg aqueous solution.Rounded grain fertilizer top layer is all moistening, start electric heating wind baker when adhesion phenomenon occurring, and 80 ℃~100 ℃ hot blast dryings, change and blow the normal temperature air cooling when smooth to particle surface.Promptly become felted phosphorus potassium slow release fertilizer.
(3) blending
The chemical analysis measurement result, coated carbamide nitrogenous (N) amount is 42.7%; Phosphorous (the P of phosphorus potassium compound felted slow-release fertilizer 2O 5) 17.9%, contain K 2O35.8%, nitrogenous (N) 4.1%.
According to measurement result, take by weighing coated carbamide 440kg, the fertile 560kg of phosphorus potassium compound, even blend becomes promptly that the 1000kg mix type is nitrogenous, the slow release fertilizer of phosphorus, potassium.Nitrogenous (N) 22.88% of this fertilizer, phosphorous (P 2O 5) 10%, contain potassium (K 2O) 20%, total nutrient content is 50.88%; N: P 2O 5: K 2O=1: 0.44: 0.88.For wheat, corn, rice crop, carry out blending at 44%: 56% by mass ratio by coated carbamide and paraffin parcel phosphorus potassium compound fertilizer.
Embodiment two: adopt rotary drum granulator and coating cylinder to produce mixed high-concentration slow-release fertilizer
1, coated carbamide production sequence
(1) starts the coating rotating cylinder, with rotary conveyor urea is imported cylinder, mix the polymers coating cementing agent to the urea granules that raises up with pressure 0.5Mpa, aperture 10 μ m nozzle spray painting humic acidses, consumption is 15Kg mother liquor (solid content 20%)/t urea, uses after being diluted with water to 4 times.Along with urea granules constantly raises up, falls and rolls, humic acids mixes polymers and fully is wrapped in the urea granules surface.Start the face powder system, pounce on and spread 200 mesh sieve holes (sieve diameter 0.074mm) talcum powder, consumption 30Kg/t.Start the electric heating drying system, 100 ℃ of left and right sides hot blast dryings promptly become humic acids and mix the polymers coated carbamide.
(2) waste plastic-starch mixes the production of polymers coated carbamide
Mix polymers coated carbamide production method by present embodiment (1) humic acids and produce, mix the polymers coating cementing agent divided by waste plastic-starch and replace humic acids to mix outside the polymers coating cementing agent, the coating agent is at 20 ℃~35 ℃ following thin ups of temperature.
(3) clay-polyester mixed polymer coated carbamide is produced
Mix polymers coated carbamide production method by present embodiment (1) humic acids and produce, only replace humic acids wherein to mix the polymers coating cementing agent with clay-polyester mixed polymer coating cementing agent.
(4) sulfonated lignin mixes the production of polymers coated carbamide
Mix polymers coated carbamide production method by present embodiment (1) humic acids and produce, only mix the polymers coating cementing agent and replace humic acids wherein to mix the polymers coating cementing agent with sulfonated lignin.
(5) alkenes compounds-starch mixes the production of polymers coated carbamide
Mix polymers coated carbamide production method by present embodiment (1) humic acids and produce, only mix the polymers coating cementing agent and replace humic acids wherein to mix the polymers coating cementing agent with alkenes compounds-starch.
2, rotary drum granulator production and mineral wax mixture parcel operation
(1) raw material mixes
Take by weighing the monoammonium phosphate 20t in oven dry, pulverizing, mistake 100 mesh sieve holes, Repone K 30t, even blend in the asymmetric double spiral mixer.Add organic fertilizer adhesive for granulating CF2, consumption 1.0t is diluted with water to 6t, sprays into mixer, with the material thorough mixing.
(2) granulation
Add the organic fertilizer adhesive for granulating CF2 aqueous solution and mix after material deliver to granulation in the rotary drum granulator through rotary conveyor, if water deficient can be replenished on demand by the industrial water purification spray line in material top in the rotary drum.
(3) drying
Rotary conveyor with granulation after fertilizer send in the rotary drying drum, along with the rotation of drying cylinder, also be again granulation process, carry out the drying process of fertiliser granulates.
(4) screening
Directly be delivered into rolling screen after the fertiliser granulates drying, be returning charge, use through crush cycle less than the powder of 1mm with greater than the macrobead of 5mm.Diameter 1~5mm fertilizer granulating rate is 96.5%.
(5) paraffin-kaolin mixture coating
Granulated fertilizer after will sieving with travelling belt deliver to the coating rotating cylinder (among the Φ 1500 * 8000mm), on one side rotation, pressurization (pressure 0.5Mpa) spray painting paraffin-kaolin mixture aqueous solution is all moistening to fertiliser granulates on one side.Paraffin coating agent consumption is 1.0t, and thin up is heated to about 60 ℃ in the pre-treatment jar to 4.5t, stirs the back and uses.Use 80 ℃~100 ℃ hot-air seasonings at last, promptly become phosphorus potassium compound felted slow-release fertilizer material finished product after the cooling.
(6) blending
For wheat, corn, rice crop, carry out blending at 44%: 56% by mass ratio by coated carbamide and paraffin parcel phosphorus potassium compound fertilizer.

Claims (8)

1. the production method of a mixed high-concentration slow-release fertilizer, its feature is made up of following technological process, i.e. coated carbamide preparation, the preparation of mineral wax mixture enveloping phosphorus potassium slow release fertilizer, the preparation of mixed high-concentration nitrogen phosphorus potassium slow release fertilizer.
2. according to the production method of the described mixed high-concentration slow-release fertilizer of claim 1, it is characterized in that in disk or coating cylinder, putting into urea, disk or cylinder rotate on one side, mix the polymers coating cementing agent with the nano level humic acids after the nozzle spray painting dilution of pressure 〉=0.4Mpa on one side, its mother liquor consumption is about 2% of a urea quality, and use thin up to solid content 5%~8% back; Behind the even coating in urea granules surface, used the talcum powder face powder in 200 mesh sieve holes, its consumption is 3%~5% of a urea quality, with about 100 ℃ warm air drying, promptly becomes humic acids and mixes the polymers coated carbamide.
3. according to the production method of the described mixed high-concentration slow-release fertilizer of claim 1, it is characterized in that using nano level waste plastic-starch to mix the polymers coating cementing agent and replace the nano level humic acids in the claim 2 to mix the polymers coating cementing agent, be prepared into waste plastic-starch and mix the polymers coated carbamide.
4. according to the production method of the described mixed high-concentration slow-release fertilizer of claim 1, it is characterized in that using nano level clay-polyester mixed polymer coating cementing agent to replace the nano level humic acids in the claim 2 to mix the polymers coating cementing agent, be prepared into clay-polyester mixed polymer coated carbamide.
5. according to the production method of the described mixed high-concentration slow-release fertilizer of claim 1, it is characterized in that using the nano level sulfonated lignin to mix the polymers coating cementing agent and replace the nano level humic acids in the claim 2 to mix the polymers coating cementing agent, be prepared into sulfonated lignin and mix the polymers coated carbamide.
6. according to the production method of the described mixed high-concentration slow-release fertilizer of claim 1, it is characterized in that using nano level alkenes compounds-starch to mix the polymers coating cementing agent and replace the nano level humic acids in the claim 2 to mix the polymers coating cementing agent, be prepared into alkenes compounds-starch and mix the polymers coated carbamide.
7. according to the production method of the described mixed high-concentration slow-release fertilizer of claim 1, it is characterized in that selecting monoammonium phosphate and white colour Repone K is raw material, use adhesive for granulating CF2 that phosphorus, potash fertilizer are prepared into the phosphorus potassium binary compound fertilizer, select the rounded grain PK compound fertilizer of 1~5mm diameter, send disk or coating cylinder to, use pressure 〉=0.4Mpa, aperture 5~10 μ m nozzle spray painting mineral wax mixture enveloping agents, its mother liquor consumption is 1%~2% of the fertile butt quality of phosphorus potassium compound, uses behind 5~6 times of the thin ups; After the PK compound fertilizer particle surface evenly wraps up mineral wax mixture, air-dry dry with 80 ℃~100 ℃ electric heating air-blowings, promptly become mineral wax mixture enveloping phosphorus potassium compound slow release fertilizer after the cooling.
8. according to the production method of the described mixed high-concentration slow-release fertilizer of claim 1, it is characterized in that coated carbamide and mineral wax mixture parcel phosphorus potassium compound fertilizer according to Different Crop nitrogen (N), phosphorus (P 2O 5), potassium (K 2O) demand percentage is carried out blending, promptly becomes mixed high-concentration slow-release fertilizer.
CNB2005100027325A 2005-01-26 2005-01-26 Method for producing mixed high-concentration slow-release fertilizer Expired - Fee Related CN100363310C (en)

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CN100448809C (en) * 2007-12-14 2009-01-07 山东金正大生态工程股份有限公司 Special-purpose controlled-release fertilizer coated with resin for cucumber and preparation method thereof
CN100448811C (en) * 2007-12-14 2009-01-07 山东金正大生态工程股份有限公司 Special-purpose controlled-release fertilizer coated with resin for kidney bean and preparation method thereof
CN100448813C (en) * 2007-12-19 2009-01-07 山东金正大生态工程股份有限公司 Special control-release fertilizer for resin coated bagasse and preparation thereof
CN100448807C (en) * 2007-12-17 2009-01-07 山东金正大生态工程股份有限公司 Sulfur, special control-release fertilizer for resin coated tobacco and preparation thereof
CN100448803C (en) * 2007-12-14 2009-01-07 山东金正大生态工程股份有限公司 Special-purpose controlled-release fertilizer coated with sulfur and resin for celery cabbage and preparation method thereof
CN100448812C (en) * 2007-12-14 2009-01-07 山东金正大生态工程股份有限公司 Special-purpose controlled-release fertilizer coated with resin for water melon and preparation method thereof
CN100448808C (en) * 2007-12-17 2009-01-07 山东金正大生态工程股份有限公司 Special control-release fertilizer for resin coated grape and preparation thereof
CN100448816C (en) * 2007-12-19 2009-01-07 山东金正大生态工程股份有限公司 Special controlled-release fertilizer for resin film coated cherry and preparation method thereof
CN100463884C (en) * 2008-02-22 2009-02-25 山东金正大生态工程股份有限公司 Special control-release fertilizer for sulfur and resin coated melon and preparation method thereof
CN100463883C (en) * 2008-02-22 2009-02-25 山东金正大生态工程股份有限公司 Whole process regulating and controlling special control-release fertilizer for helianthus and preparation method thereof
CN100463886C (en) * 2008-02-25 2009-02-25 山东金正大生态工程股份有限公司 Disposable employed special fertilizer for carrot and preparation method thereof
CN100463887C (en) * 2008-02-25 2009-02-25 山东金正大生态工程股份有限公司 Special control-release fertilizer for rape and preparation method thereof
CN102020510A (en) * 2010-10-27 2011-04-20 合肥工业大学 Styrene acrylic emulsion-paraffin-attapulgite composite envelope slow-release nitrogen fertilizer and preparation method thereof
CN102320901A (en) * 2011-09-02 2012-01-18 史丹利化肥股份有限公司 Melt biomass composite chlorine-based slow release fertilizer and preparation method thereof
CN103086790A (en) * 2012-12-07 2013-05-08 临清市科源复合肥有限公司 Ecological slow release fertilizer and preparation method thereof
CN103113152A (en) * 2012-10-10 2013-05-22 聊城市联威肥业股份有限公司 Ecologic slow-released diammonium phosphate and preparation method thereof
CN103130566A (en) * 2011-12-02 2013-06-05 中国农业科学院农业资源与农业区划研究所 Adjustable slow release BB fertilizer special for applying for cucumber and preparation method of adjustable slow release BB fertilizer
CN103288564A (en) * 2012-02-28 2013-09-11 五洲丰农业科技有限公司 Production method of encapsulated sustained release agent specially for urea or compound fertilizer
CN104355755A (en) * 2014-11-17 2015-02-18 淮北市三丰肥业有限公司 Blended formulated fertilizer for wheat
CN106396927A (en) * 2016-08-31 2017-02-15 天津市施易得肥料有限公司 High-nitrogen humic acid type bulk blended fertilizer and preparation method thereof
CN110981585A (en) * 2014-05-05 2020-04-10 赛贝克环球科技公司 Coated granular fertilizer, method for producing same and method for fertilizing same

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CN1040096C (en) * 1995-08-17 1998-10-07 郑州乐喜施磷复肥技术研究推广中心 Releasion controlled fertilizer
CN1241555A (en) * 1998-07-02 2000-01-19 西北农大彬县岭秀多元长效复合肥厂 Polynary long-acting composite fertilizer with turf as additive
CN1244517A (en) * 1999-08-31 2000-02-16 湖南省地质研究所 Long-acting sepiolite fertilizer

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CN100448809C (en) * 2007-12-14 2009-01-07 山东金正大生态工程股份有限公司 Special-purpose controlled-release fertilizer coated with resin for cucumber and preparation method thereof
CN100448811C (en) * 2007-12-14 2009-01-07 山东金正大生态工程股份有限公司 Special-purpose controlled-release fertilizer coated with resin for kidney bean and preparation method thereof
CN100448803C (en) * 2007-12-14 2009-01-07 山东金正大生态工程股份有限公司 Special-purpose controlled-release fertilizer coated with sulfur and resin for celery cabbage and preparation method thereof
CN100448812C (en) * 2007-12-14 2009-01-07 山东金正大生态工程股份有限公司 Special-purpose controlled-release fertilizer coated with resin for water melon and preparation method thereof
CN100448807C (en) * 2007-12-17 2009-01-07 山东金正大生态工程股份有限公司 Sulfur, special control-release fertilizer for resin coated tobacco and preparation thereof
CN100448808C (en) * 2007-12-17 2009-01-07 山东金正大生态工程股份有限公司 Special control-release fertilizer for resin coated grape and preparation thereof
CN100448815C (en) * 2007-12-19 2009-01-07 山东金正大生态工程股份有限公司 Special controlled release fertilizer for tree plant and preparation method thereof
CN100448813C (en) * 2007-12-19 2009-01-07 山东金正大生态工程股份有限公司 Special control-release fertilizer for resin coated bagasse and preparation thereof
CN100448816C (en) * 2007-12-19 2009-01-07 山东金正大生态工程股份有限公司 Special controlled-release fertilizer for resin film coated cherry and preparation method thereof
CN100463884C (en) * 2008-02-22 2009-02-25 山东金正大生态工程股份有限公司 Special control-release fertilizer for sulfur and resin coated melon and preparation method thereof
CN100463883C (en) * 2008-02-22 2009-02-25 山东金正大生态工程股份有限公司 Whole process regulating and controlling special control-release fertilizer for helianthus and preparation method thereof
CN100463887C (en) * 2008-02-25 2009-02-25 山东金正大生态工程股份有限公司 Special control-release fertilizer for rape and preparation method thereof
CN100463886C (en) * 2008-02-25 2009-02-25 山东金正大生态工程股份有限公司 Disposable employed special fertilizer for carrot and preparation method thereof
CN102020510A (en) * 2010-10-27 2011-04-20 合肥工业大学 Styrene acrylic emulsion-paraffin-attapulgite composite envelope slow-release nitrogen fertilizer and preparation method thereof
CN102020510B (en) * 2010-10-27 2013-01-09 合肥工业大学 Styrene acrylic emulsion-paraffin-attapulgite composite envelope slow-release nitrogen fertilizer and preparation method thereof
CN102320901A (en) * 2011-09-02 2012-01-18 史丹利化肥股份有限公司 Melt biomass composite chlorine-based slow release fertilizer and preparation method thereof
CN103130566A (en) * 2011-12-02 2013-06-05 中国农业科学院农业资源与农业区划研究所 Adjustable slow release BB fertilizer special for applying for cucumber and preparation method of adjustable slow release BB fertilizer
CN103288564A (en) * 2012-02-28 2013-09-11 五洲丰农业科技有限公司 Production method of encapsulated sustained release agent specially for urea or compound fertilizer
CN103288564B (en) * 2012-02-28 2014-05-07 五洲丰农业科技有限公司 Production method of encapsulated sustained release agent specially for urea or compound fertilizer
CN103113152A (en) * 2012-10-10 2013-05-22 聊城市联威肥业股份有限公司 Ecologic slow-released diammonium phosphate and preparation method thereof
CN103086790A (en) * 2012-12-07 2013-05-08 临清市科源复合肥有限公司 Ecological slow release fertilizer and preparation method thereof
CN110981585A (en) * 2014-05-05 2020-04-10 赛贝克环球科技公司 Coated granular fertilizer, method for producing same and method for fertilizing same
CN104355755A (en) * 2014-11-17 2015-02-18 淮北市三丰肥业有限公司 Blended formulated fertilizer for wheat
CN106396927A (en) * 2016-08-31 2017-02-15 天津市施易得肥料有限公司 High-nitrogen humic acid type bulk blended fertilizer and preparation method thereof

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