CN104311258B - A kind of preparation method of potassium fertilizer particle - Google Patents
A kind of preparation method of potassium fertilizer particle Download PDFInfo
- Publication number
- CN104311258B CN104311258B CN201410516693.XA CN201410516693A CN104311258B CN 104311258 B CN104311258 B CN 104311258B CN 201410516693 A CN201410516693 A CN 201410516693A CN 104311258 B CN104311258 B CN 104311258B
- Authority
- CN
- China
- Prior art keywords
- particle
- screw
- extrusion
- potassium fertilizer
- mixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003337 fertilizer Substances 0.000 title claims abstract description 82
- 239000002245 particle Substances 0.000 title claims abstract description 59
- 229910052700 potassium Inorganic materials 0.000 title claims abstract description 38
- 239000011591 potassium Substances 0.000 title claims abstract description 38
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000001125 extrusion Methods 0.000 claims abstract description 55
- 238000002156 mixing Methods 0.000 claims abstract description 49
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 34
- 229940072033 potash Drugs 0.000 claims abstract description 34
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 34
- 235000015320 potassium carbonate Nutrition 0.000 claims abstract description 34
- 238000005469 granulation Methods 0.000 claims abstract description 23
- 230000003179 granulation Effects 0.000 claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 20
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 14
- 239000006185 dispersion Substances 0.000 claims abstract description 10
- 238000005453 pelletization Methods 0.000 claims abstract description 10
- 235000015097 nutrients Nutrition 0.000 claims abstract description 7
- 150000003109 potassium Chemical class 0.000 claims abstract description 4
- 239000008188 pellet Substances 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 32
- 238000007906 compression Methods 0.000 claims description 31
- 230000006835 compression Effects 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- 235000021049 nutrient content Nutrition 0.000 claims description 9
- 238000004898 kneading Methods 0.000 claims description 7
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 239000004094 surface-active agent Substances 0.000 claims description 6
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 3
- 150000002191 fatty alcohols Chemical class 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- XDFGPVSVSMWVQE-UHFFFAOYSA-M sodium;dodecanoic acid;hydrogen sulfate Chemical compound [Na+].OS([O-])(=O)=O.CCCCCCCCCCCC(O)=O XDFGPVSVSMWVQE-UHFFFAOYSA-M 0.000 claims description 3
- -1 neopelex Chemical compound 0.000 claims description 2
- 238000013268 sustained release Methods 0.000 abstract description 5
- 239000012730 sustained-release form Substances 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000010008 shearing Methods 0.000 abstract description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 24
- 239000001103 potassium chloride Substances 0.000 description 12
- 235000011164 potassium chloride Nutrition 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000008187 granular material Substances 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 238000005054 agglomeration Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 3
- 229910052939 potassium sulfate Inorganic materials 0.000 description 3
- 235000011151 potassium sulphates Nutrition 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 235000013339 cereals Nutrition 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 239000003979 granulating agent Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000009343 monoculture Methods 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002686 phosphate fertilizer Substances 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 235000020985 whole grains Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D1/00—Fertilisers containing potassium
- C05D1/02—Manufacture from potassium chloride or sulfate or double or mixed salts thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The present invention relates to the preparation method of a kind of potassium fertilizer particle; it is characterized in that this potassium fertilizer particle is prepared by two steps type mixing extrusion unit granulation; potash fertilizer powder and auxiliary agent under the bigger shearing force of the first rank twin screw compounder height rotating speed screw rod rapid refinement dispersion, mixing; then exhaust enters second-order single screw extrusion machine; at the low rotational speed; output sets up high-voltage-stable extrusion, carries out pelletizing finally by die face pellet cutters, obtains potassium fertilizer particle.Potassium fertilizer particle nutrient density of the present invention is high, regular shape, uniform particle sizes, and intensity is high, has preferable sustained release performance；Prilling process of the present invention is simple to operate, and Technological adaptability is strong, and energy consumption is low, and granulating rate is high, and yield is high, has market using value.
Description
Technical field
The present invention relates to the preparation method of a kind of potassium fertilizer particle, more particularly, it relates to a kind of two steps type mixing extrusion unit method to potash fertilizer granulation of applying, belong to potash fertilizer granulation field.
Background technology
Potash fertilizer is one of three large chemical fertilizer kinds, potassium element is one of indispensable element of plant, in the growth and development process of plant, potassium directly participates in the processes such as the synthesis of photosynthesis, the transport of assimilation products, protein, and the annual potash fertilizer consumption figure of China is more than 5,000,000 tons.Common potash fertilizer such as potassium chloride, potassium sulfate, potassium nitrate, plant ash etc. are powder, lump after depositing the moisture absorption for a long time.
Powder potash fertilizer physical property is the best, easily plays dirt during handling, and long storage time is easily lumpd, poor fluidity, apply fertilizer extremely inconvenient, meanwhile, powder fertilizer directly use with soil after, the too fast release of nutrient, crop of easily burning, the nutrient not absorbed in time easily runs off and causes environmental pollution.Development along with science and technology, agrotechnical constantly bring forth new ideas, all kinds of agricultural machinery are widely used in extensive large-area farmland, mechanized application for convenience, granular fertilizer has become the development trend of current chemical fertilizer, because it has good physical performance than common powdered fertilizer, dirt is not played during handling, long-term storage is not lumpd, good fluidity, easy uniformly dispersing during fertilising, the advantage being easily achieved mechanical fertilization, and, granular fertilizer then has certain slow releasing function, improve the utility ratio of fertilizer nutrient, monoculture divides other granular fertilizers that granular fertilizer can be close with granular size directly to mix to be configured to compound fertilizer simultaneously.At present, China's granulated phosphate fertilizer and nitrogenous fertilizer have had certain production scale, and Ye You company has introduced roll squeezer Granulation Equipments technology and potash fertilizer is carried out granulation, although filled up the blank of China's granular potash fertilizer, but limits throughput, still need to rely on a large amount of import.
Extruding pelletization shaping is completed by screw extruder, it is that material heating is melted to viscous state, strength squeezing action by screw rod, the material promoting viscous state becomes the non-individual body that cross section is similar with Oral incision by mouth die, if using circular hole mouth die, extrudate then can be cut into the graininess of rule, and granulating rate is high.1. the method has a characteristic that. continuous prodution；2.. the highest productivity ratio；3.. applied range；4.. require less investment while yielding quicker results.Single screw extrusion machine energy consumption is low, and performance is good, and noise is low, and bearing capacity is big, smooth running, and extrusion is stable, and yield is high.Double screw extruder has that shearing force is big, heat transfer area big, accurate measurement, feed performance are good, is suitable for raw material processing, melting effect good, and exhaust and reaction effect are good, have the advantages such as self-cleaning function simultaneously.
Two steps type mixing extrusion unit is that double screw extruder organically combines with single screw extrusion machine, and two sections of rotating speeds can independently regulate and control, and makes both yield reach balance, and Technological adaptability is strong, is provided simultaneously with two kinds of screw extruder advantages.First rank are double screw extruder, and the design of machine barrel, screw combinations is changeable, makes material forced conveyance, the most mixing, shear dispersion；Second-order is single screw extrusion machine, screw rod low speed rotation, and material is the most mixing, and low sheraing builds high pressure, stably extruding pelletization.Twin-screw and single screw combinations, by technical process Function Decomposition, add independent performance variable, the step-by-step optimization of the most each technical process.Two steps type mixing extrusion unit has equipment low energy consumption, and product is high quality, the feature of high yield.
Patent CN 201310528939.0 discloses the manufacture method of a kind of high concentration rounded grain potassium chloride; the method granulation step is: mix potassium chloride raw material and granulating agent broken laggard to enter to reunite Granulation Equipments (rotary drum granulator, granulating disc); united pelleting process routinely carries out agglomeration granulation; gained particle drying, cool down, sieve; obtain high concentration rounded grain potassium chloride, and provide the material composition of granulation aid: polyacrylamide, sodium metasilicate and borax.This prilling process is wet agglomeration comminution granulation, adds water mix wetting in granulation process, and at granulating together of reuniting, in granulation process, moisture is in inside particle, causing gained particle drying difficulty, power consumption is high, additionally, the shortcomings such as the method gained particle appearance is poor, uneven, and intensity is relatively low.
Patent CN201010175892.0 discloses a kind of method that roller press type produces potassium fertilizer particle, the method by potash fertilizer compressing tablet, is then passed through being dried by roll squeezer, crush, whole grain, the step enforcement granulation of screening, the method inefficiency, yield is little.
Patent CN201310347978.0 discloses a kind of sprinkling pelleting method of potash fertilizer potassium chloride particle, potash fertilizer potassium chloride is heated to by the method granulation tower 800 DEG C melted after through spray, melted potassium chloride is lowered the temperature rapidly in descent, form a kind of circular hollow particle, the potassium chloride particle that the method is produced has good mobility, but its granulation tower building cost is high, production process needs the 800 DEG C of high temperature being heated to making potassium chloride melted, consumes energy the highest.
Therefore, a kind of technique of exploitation is simple, it is not necessary to is dried, consumes energy low, can produce continuously, and yield is high, and granulating rate is high, and China's granulating potash fertilizer technology and market application are significant by the high production technology route of gained potassium fertilizer particle intensity and method.
Summary of the invention
The present invention is directed in above-mentioned patent, technique drying process difficulty, the appearance poor of agglomeration granulation, particle is uneven, intensity is low, the shortcomings such as roller extruder method production efficiency is low, yield is little, and melted sprinkling pelleting cost is high, power consumption is high, it is provided that the preparation method of a kind of potassium fertilizer particle.The potassium fertilizer particle of the present invention is prepared by two steps type mixing extrusion unit granulation after being mixed by potash fertilizer powder and auxiliary agent, this potassium fertilizer particle regular shape, uniform particle sizes, and intensity is high, has preferable sustained release performance.The present invention is simple to operate, and Technological adaptability is strong, small investment, and energy consumption is low, and granulating rate is high, and yield is high, has great market value.
Technical scheme is as follows:
A kind of preparation method of potassium fertilizer particle, it is characterised in that: this potassium fertilizer particle be by potash fertilizer powder and auxiliary agent all with mix after, prepared by two steps type mixing extrusion unit extruding pelletization, method of operating is as follows:
1) weigh potash fertilizer powder 93% ~ 97% by mass percentage and auxiliary agent 3% ~ 7% is sent in high-speed mixer, mixed processing 15 ~ 30 minutes under normal temperature, make each component materials and auxiliary agent dispersed, form mixed material；
2) mixed material being sent into two steps type mixing extrusion unit, under the threaded rod shear shear force of twin screw compounder and the effect of auxiliary agent, carry out refinement dispersion, mixing, entering single screw extrusion machine after exhaust, to carry out low velocity shear mixing, sets up high-voltage-stable extrusion；
3) material through single screw rod die extrusion carries out pelletizing by die face pelletier, after obtaining the particle of regular uniform, packs or stores.
The preparation method of above-mentioned potassium fertilizer particle, described potassium fertilizer particle particle diameter is 2 ~ 5mm, and intensity is 40 ~ 60N, potash fertilizer content is 93% ~ 97%, and nutrient content is 48% ~ 56%, 28 days accumulative nutrients release≤80% of slow release.
The preparation method of above-mentioned potassium fertilizer particle, in described two steps type mixing extrusion unit, first rank are high speed intermeshing co-rotating twin-screw mixing roll, and screw diameter is 35 ~ 95mm, and draw ratio is 20 ~ 36:1, rotating speed is 100 ~ 500 r/min, screw combinations includes that feeding section, compression section, melt zone, exhaust section, barrel temperatures set interval are 100 ~ 160 DEG C, and machine barrel bulk temperature is in the trend fallen after rising, melt zone temperature is the highest, and exhaust section machine barrel is provided with connector and connects second-order extruder；Second-order is low speed single screw extrusion machine, screw diameter is 100 ~ 200mm, draw ratio is 7 ~ 20:1, rotating speed is 60 ~ 120 r/min, screw rod includes feed zone, compression section, homogenizing zone, barrel temperatures set interval is 90 ~ 160 DEG C, and machine barrel bulk temperature is in the trend fallen after rising, and compression section temperature is the highest.
The preparation method of above-mentioned potassium fertilizer particle, the first described twin screw compounder Screw Extrusion compression section, rank is provided with 2 ~ 3 groups of compression threaded blocks, and melt zone is provided with 2 ~ 3 groups of forward kneading blocks；Described second-order single screw extrusion machine machine head port mould is circular hole mouth die, and aperture is 3 ~ 4mm, and temperature sets interval as 80 ~ 150 DEG C, and relative machine barrel homogenizing zone temperature is low 10 ~ 20 DEG C.
The preparation method of above-mentioned potassium fertilizer particle, described auxiliary agent is surfactant: water is the mixture of 2 ~ 4:1, by percentage to the quality, accounts for the 3% ~ 7% of granulation material；Potash fertilizer powder and auxiliary agent mass percent sum are 100%.
The preparation method of above-mentioned potassium fertilizer particle, described surfactant is the one in sodium lignin sulfonate, laurate sodium sulphate, neopelex, sodium sulfate of polyethenoxy ether of fatty alcohol.
Potash fertilizer granulation is combined by the present invention with two steps type mixing extrusion unit, after potash fertilizer powder and auxiliary agent uniformly mix, send into two steps type mixing extrusion unit, first pass around the first rank twin screw compounder, under the screw acting of its High Rotation Speed, material obtains forced conveyance, refinement dispersion, the most mixing, shear, potash fertilizer powder is made to be provided with certain wettability and plasticity, then second-order single screw extrusion machine is entered through exhaust, screw rod low speed rotation, make material the most mixing, low sheraing, set up high pressure, stably extruding pelletization, prepare regular particles, excellent performance, the granular potash fertilizer that intensity is high.
Auxiliary agent used by the present invention is the mixture of surfactant and water, and under twin screw compounder high shear forces, surfactant and water quickly diffuse into and soaks potash fertilizer powder, make potash fertilizer powder reach to have certain can the effect of working plasticity.
The present invention has following outstanding feature and a beneficial effect:
1, the present invention completes granulation by two steps type mixing extrusion unit to potash fertilizer powder, and automation degree of equipment is high, can produce continuously, and Technological adaptability is strong, and efficiency is high, and granulating rate is high, and yield is high.
2, the invention belongs to non-slurry pelletizing, gained particle internal moisture is few, it is not necessary to extra dry process, and technique is simple, consumes energy low.
3, the present invention is adjuvant used seldom, and hydrone will be removed in granulation process, and the potassium fertilizer particle nutrient content obtained is high, low production cost.
4, the potassium fertilizer particle that the present invention produces has regular shape, and intensity is high, the feature of had good sustained release effect, and particle diameter 2 ~ 5mm, it is easy to other granular fertilizer mixtures close with granular size meets mechanized application requirement.
5, production process of the present invention is simple, and constant product quality is with low cost, is suitable for industrialization and produces, has market using value.
Table one, each performance indications of product of the present invention.
| Particle size | Granule strength | Granular potash fertilizer content | Particle nutrient content | Sustained release performance |
| 2~5mm | 40~60 N | 93%~97% | 48%~56% | 28 days accumulative nutrients release≤80% |
In table one, potassium fertilizer particle potassium nutrition content >=40% of the present invention, sustained release performance meets the requirement index of GB/T23348 2009 slow release fertilizer.
Accompanying drawing explanation
Fig. 1 is the process chart of the present invention.
In figure, 1 is to prepare potash fertilizer powder and auxiliary agent；2 be potash fertilizer powder and auxiliary agent weigh burden process；3 is the mixed processes of potash fertilizer powder and auxiliary agent；4 is mixing extrusion operation；4a is mixing extrusion operation the first rank twin-screw mixer；4b is mixing extrusion operation single order second order connector；4c is mixing extrusion operation second-order Single screw extrusion；5 is pelletizing operation；6 is packaging or storage procedure.
Specific embodiments
Below by way of detailed description of the invention, the present invention is described in further detail, but this should not being interpreted as, the scope of the present invention is only limitted to Examples below.In the case of without departing from said method thought of the present invention, the various replacements made according to ordinary skill knowledge and customary means or change, should be included in the scope of the present invention.
Embodiment
1
1) weigh after potassium chloride 93kg, sodium lignin sulfonate 5kg, water 2kg send into high mixer mixing 15 minutes and obtain mixed material.
2) mixed material being sent into two steps type mixing extrusion unit, the first rank twin screw compounder: screw diameter is 35mm, draw ratio is 24:1, and compression section is provided with 2 groups of compression threaded blocks, and melt zone is provided with 2 groups of forward kneading blocks；Second-order single screw extrusion machine: screw diameter is 100mm, draw ratio is 7:1, and mouth die aperture is 3mm.
3) first each section of temperature of rank twin screw compounder machine barrel is set to: feeding section 100 DEG C, 110 DEG C, compression section, melt zone 120 DEG C, exhaust section 120 DEG C, screw speed is set as 500 r/min；Each section of temperature of second-order extruder cylinder of single screw extruder is set as: feed zone 110 DEG C, 120 DEG C, compression section, homogenizing zone 110 DEG C, and die temperature is set to 100 DEG C, and screw speed is set as 60 r/min.
4) material is through the first rank twin screw compounder refinement dispersion, mixing, low velocity shear is carried out by connector entrance second-order single screw extrusion machine mixing after exhaust, set up high pressure, die face cutting is carried out by mouth die steady extruding, obtain qualified potassium fertilizer particle: particle diameter 2 ~ 4mm, nutrient content 53, granule strength 59N, then packing and storing.
Embodiment
2
1) weighing potassium sulfate 94kg, laurate sodium sulphate 4kg, water 2kg send into after high mixer mixes 20 minutes and obtain mixed material.
2) mixed material being sent into two steps type mixing extrusion unit, the first rank twin screw compounder: screw diameter is 45mm, draw ratio is 26:1, and compression section is provided with 2 groups of compression threaded blocks, and melt zone is provided with 2 groups of forward kneading blocks；Second-order single screw extrusion machine: screw diameter is 120mm, draw ratio is 10:1, and mouth die aperture is 4mm.
3) first each section of temperature of rank twin screw compounder machine barrel is set to: feeding section 110 DEG C, 120 DEG C, compression section, melt zone 130 DEG C, exhaust section 120 DEG C, screw speed is set as 400 r/min；Each section of temperature of second-order extruder cylinder of single screw extruder is set as: feed zone 120 DEG C, 130 DEG C, compression section, homogenizing zone 110 DEG C, and die temperature is set to 100 DEG C, and screw speed is set as 80 r/min.
4) material is through the first rank twin screw compounder refinement dispersion, mixing, low velocity shear is carried out by connector entrance second-order single screw extrusion machine mixing after exhaust, set up high pressure, die face cutting is carried out by mouth die steady extruding, obtain qualified potassium fertilizer particle: particle diameter 3 ~ 5mm, nutrient content 49, granule strength 54N, then packing and storing.
Embodiment
3
1) weigh after potassium chloride 96kg, sodium sulfate of polyethenoxy ether of fatty alcohol 3kg, water 1kg send into high mixer mixing 20 minutes and obtain mixed material.
2) mixed material being sent into two steps type mixing extrusion unit, the first rank twin screw compounder: screw diameter is 55mm, draw ratio is 28:1, and compression section is provided with 2 groups of compression threaded blocks, and melt zone is provided with 3 groups of forward kneading blocks；Second-order single screw extrusion machine: screw diameter is 150mm, draw ratio is 7:1, and mouth die aperture is 3mm.
3) first each section of temperature of rank twin screw compounder machine barrel is set to: feeding section 120 DEG C, 130 DEG C, compression section, melt zone 140 DEG C, exhaust section 120 DEG C, screw speed is set as 300 r/min；Each section of temperature of second-order extruder cylinder of single screw extruder is set as: feed zone 120 DEG C, 130 DEG C, compression section, homogenizing zone 120 DEG C, and die temperature is set to 110 DEG C, and screw speed is set as 90 r/min.
4) material is through the first rank twin screw compounder refinement dispersion, mixing, low velocity shear is carried out by connector entrance second-order single screw extrusion machine mixing after exhaust, set up high pressure, die face cutting is carried out by mouth die steady extruding, obtain qualified potassium fertilizer particle: particle diameter 2 ~ 4mm, nutrient content 54, granule strength 51N, then packing and storing.
Embodiment
4
1) weigh after potassium sulfate 95kg, neopelex 3kg, water 2kg send into high mixer mixing 25 minutes and obtain mixed material.
2) mixed material being sent into two steps type mixing extrusion unit, the first rank twin screw compounder: screw diameter is 35mm, draw ratio is 24:1, and compression section is provided with 2 groups of compression threaded blocks, and melt zone is provided with 2 groups of forward kneading blocks；Second-order single screw extrusion machine: screw diameter is 100mm, draw ratio is 7:1, and mouth die aperture is 4mm.
3) first each section of temperature of rank twin screw compounder machine barrel is set to: feeding section 100 DEG C, 110 DEG C, compression section, melt zone 120 DEG C, exhaust section 120 DEG C, screw speed is set as 300 r/min；Each section of temperature of second-order extruder cylinder of single screw extruder is set as: feed zone 110 DEG C, 120 DEG C, compression section, homogenizing zone 110 DEG C, and die temperature is set to 100 DEG C, and screw speed is set as 100 r/min.
4) material is through the first rank twin screw compounder refinement dispersion, mixing, low velocity shear is carried out by connector entrance second-order single screw extrusion machine mixing after exhaust, set up high pressure, die face cutting is carried out by mouth die steady extruding, obtain qualified potassium fertilizer particle: particle diameter 3 ~ 5mm, nutrient content 50, granule strength 48N, then packing and storing.
Embodiment
5
1) weigh after potassium chloride 97kg, sodium lignin sulfonate 2kg, water 1kg send into high mixer mixing 30 minutes and obtain mixed material.
2) mixed material being sent into two steps type mixing extrusion unit, the first rank twin screw compounder: screw diameter is 35mm, draw ratio is 24:1, and compression section is provided with 2 groups of compression threaded blocks, and melt zone is provided with 2 groups of forward kneading blocks；Second-order single screw extrusion machine: screw diameter is 100mm, draw ratio is 7:1, and mouth die aperture is 3mm.
3) first each section of temperature of rank twin screw compounder machine barrel is set to: feeding section 100 DEG C, 110 DEG C, compression section, melt zone 120 DEG C, exhaust section 120 DEG C, screw speed is set as 200 r/min；Each section of temperature of second-order extruder cylinder of single screw extruder is set as: feed zone 110 DEG C, 120 DEG C, compression section, homogenizing zone 110 DEG C, and die temperature is set to 100 DEG C, and screw speed is set as 120 r/min.
4) material is through the first rank twin screw compounder refinement dispersion, mixing, low velocity shear is carried out by connector entrance second-order single screw extrusion machine mixing after exhaust, set up high pressure, die face cutting is carried out by mouth die steady extruding, obtain qualified potassium fertilizer particle: particle diameter 2 ~ 4mm, nutrient content 56, granule strength 43N, then packing and storing.
Claims (5)
1. the preparation method of a potassium fertilizer particle, it is characterized in that: this potassium fertilizer particle be uniformly mixed by potash fertilizer powder and auxiliary agent after, prepared by two steps type mixing extrusion unit extruding pelletization, potash fertilizer powder disperses through refinement in the first rank twin screw compounder, mixing process, subsequently entering the compression extrusion pelletizing of second-order single screw extrusion machine, its method of operating is as follows:
1) weigh potash fertilizer powder by mass percentage and auxiliary agent adds in high-speed mixer, mixed processing 15 ~ 30 minutes, make each component materials and auxiliary agent dispersed, form mixed material；
2) being added by mixed material in two steps type mixing extrusion unit, under the threaded rod shear shear force of twin screw compounder and the effect of auxiliary agent, carry out refinement dispersion, mixing, entering second-order single screw extrusion machine after exhaust, to carry out low velocity shear mixing, sets up high-voltage-stable extrusion；In described two steps type mixing extrusion unit, first rank are high speed intermeshing co-rotating twin-screw mixing roll, screw diameter is 35 ~ 95mm, draw ratio is 20 ~ 36:1, and rotating speed is 100 ~ 500r/min, and screw combinations includes feeding section, compression section, melt zone, exhaust section, barrel temperatures set interval is 100 ~ 160 DEG C, machine barrel bulk temperature is in the trend fallen after rising, and melt zone temperature is the highest, and exhaust section machine barrel is provided with connector and connects second-order extruder；Second-order is low speed single screw extrusion machine, screw diameter is 100 ~ 200mm, draw ratio is 7 ~ 20:1, rotating speed is 60 ~ 120 r/min, screw rod includes feed zone, compression section, homogenizing zone, barrel temperatures set interval is 90 ~ 160 DEG C, and machine barrel bulk temperature is in the trend fallen after rising, and compression section temperature is the highest；
3) material through single screw rod die extrusion carries out granulation by die face pellet cutters, after obtaining the particle of regular uniform, packs or stores.
The preparation method of potassium fertilizer particle the most according to claim 1, it is characterised in that: described potassium fertilizer particle particle diameter is 2 ~ 5mm, and intensity is 40 ~ 60N, and potash fertilizer content is 93% ~ 97%, and nutrient content is 48% ~ 56%, 28 days accumulative nutrients release≤80% of slow release.
The preparation method of potassium fertilizer particle the most according to claim 2, it is characterised in that: the first described twin screw compounder Screw Extrusion compression section, rank is provided with 2 ~ 3 groups of compression threaded blocks, and melt zone is provided with 2 ~ 3 groups of forward kneading blocks；Described second-order single screw extrusion machine machine head port mould is circular hole mouth die, and aperture is 3 ~ 4mm, and temperature sets interval as 80 ~ 150 DEG C, and relative machine barrel homogenizing zone temperature is low 10 ~ 20 DEG C.
The preparation method of potassium fertilizer particle the most according to claim 1, it is characterised in that: described auxiliary agent is surfactant: water is the mixture of 2 ~ 4:1, by percentage to the quality, accounts for the 3% ~ 7% of granulation material；Potash fertilizer powder and auxiliary agent mass percent sum are 100%.
5.
The preparation method of potassium fertilizer particle according to claim 4, it is characterised in that: described surfactant is the one in sodium lignin sulfonate, laurate sodium sulphate, neopelex, sodium sulfate of polyethenoxy ether of fatty alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410516693.XA CN104311258B (en) | 2014-09-30 | 2014-09-30 | A kind of preparation method of potassium fertilizer particle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410516693.XA CN104311258B (en) | 2014-09-30 | 2014-09-30 | A kind of preparation method of potassium fertilizer particle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104311258A CN104311258A (en) | 2015-01-28 |
| CN104311258B true CN104311258B (en) | 2016-08-24 |
Family
ID=52366608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410516693.XA Active CN104311258B (en) | 2014-09-30 | 2014-09-30 | A kind of preparation method of potassium fertilizer particle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104311258B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107434746A (en) * | 2017-09-12 | 2017-12-05 | 四川鑫圣生物科技有限公司 | A kind of special fertilizer for cole and preparation method thereof |
| CN110526761A (en) * | 2019-10-16 | 2019-12-03 | 贵州西洋实业有限公司 | A kind of granulated fertilizer and its dry technology for production |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145059A (en) * | 1994-12-12 | 1997-03-12 | 宋美莹 | The controlled release matrix-type fertilizer and the process of preparation therefor |
| CN101993270A (en) * | 2009-08-12 | 2011-03-30 | 深圳市芭田生态工程股份有限公司 | Method for preparing compound fertilizer and product thereof |
-
2014
- 2014-09-30 CN CN201410516693.XA patent/CN104311258B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145059A (en) * | 1994-12-12 | 1997-03-12 | 宋美莹 | The controlled release matrix-type fertilizer and the process of preparation therefor |
| CN101993270A (en) * | 2009-08-12 | 2011-03-30 | 深圳市芭田生态工程股份有限公司 | Method for preparing compound fertilizer and product thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104311258A (en) | 2015-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104355778B (en) | Potassium fertilizer granules and granulating method thereof | |
| CN101570455B (en) | Method for preparing particle ammonium sulfate product by organic-inorganic binder | |
| CN103819271B (en) | A kind of manufacture method of novel particle Repone K fertilizer | |
| CN102826890B (en) | Efficient polymorphous fertilizer special for vegetables and preparation method thereof | |
| CN101575222B (en) | Method for producing ammonium sulphate grain products by using inorganic caking agent | |
| CN1213001C (en) | Method of producing granular composite fertilizer using high tower pellatizer and equipment | |
| CN106278609A (en) | A kind of low concentration Multi-functional circular granular potash fertilizer and preparation method | |
| CN104710213A (en) | Rounded grain potash fertilizer production method | |
| CN104058891A (en) | Microelement-rich compound coated fertilizer for crops and preparation method of compound coated fertilizer | |
| CN104529597B (en) | A kind of method of crowded stranding method production granular complex fertilizer | |
| CN104311258B (en) | A kind of preparation method of potassium fertilizer particle | |
| CN102690144B (en) | Method for producing granular potassium sulfate | |
| CN101165012A (en) | High tower slow release composite fertilizer containing ureaformaldehyde and producing method thereof | |
| CN101993317B (en) | Manufacturing method of puffed particle compound fertilizer and product thereof | |
| CN105237066A (en) | Synergistic urea ammonium nitrogen fertilizer and preparation method of same | |
| CN103664356A (en) | Pellet potash fertilizer pelletizing technology | |
| CN102976870B (en) | Method for producing special large-particle slow release fertilizer for oil palm | |
| CN108329069A (en) | Special charcoal base manure suitable for Guizhou wild cabbage high-yield culturing and preparation method thereof and method of administration | |
| CN101357859A (en) | Granular complex fertilizer and molten slurry granulation method thereof | |
| CN106242646A (en) | A kind of prilling process of circular granular potash fertilizer | |
| CN104311232B (en) | A kind of potash fertilizer prilling process and particle thereof | |
| CN207537367U (en) | A kind of straight mix of charcoal base urea fertilizer is melt into fertile device | |
| CN1182085C (en) | Process for preparing high-concentration compound N-P-K fertilizer by tower-type granulating | |
| CN211141926U (en) | Preparation production line of charcoal-based urea fertilizer | |
| CN105272383A (en) | Spherical magnesium calcium nitrate and manufacture method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181107 Address after: 533600 Guangxi Baise Tianyang County Tian Zhou Town, Xiang Ding Xiang wholesale vegetable market, phase one with No. 4-118 whole building. Patentee after: Tianyang Ben ran Agricultural Technology Co.,Ltd. Address before: 610091 Donghai Road, Jiao long industrial port, Qingyang District, Chengdu, Sichuan 4 Patentee before: CHENDU NEW KELI CHEMICAL SCIENCE Co.,Ltd. CHINA |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 533000 Dongguan Park, Chengdong Light Industrial Park, Qilian Village, Baiyu Town, Tianyang County, Baise City, Guangxi Zhuang Autonomous Region (in Jianye Foam Factory, Tianyang County, Guangxi) Patentee after: Guangxi Tianyang Benran Agricultural Technology Co.,Ltd. Address before: 533600 Guangxi Baise Tianyang County Tian Zhou Town, Xiang Ding Xiang wholesale vegetable market, phase one with No. 4-118 whole building. Patentee before: Tianyang Ben ran Agricultural Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220928 Address after: 255000 South of Guozhou Road and West of North Road of Development Zone, High tech Zone, Zibo, Shandong Patentee after: Shandong Yitian Biofertilizer Technology Co.,Ltd. Address before: 533000 Dongguan Park, Chengdong Light Industrial Park, Qilian Village, Baiyu Town, Tianyang County, Baise City, Guangxi Zhuang Autonomous Region (in Jianye Foam Factory, Tianyang County, Guangxi) Patentee before: Guangxi Tianyang Benran Agricultural Technology Co.,Ltd. |