CN103772054B - Slow-releasing granules trace element zinc fertilizer and production method thereof - Google Patents
Slow-releasing granules trace element zinc fertilizer and production method thereof Download PDFInfo
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- CN103772054B CN103772054B CN201410050214.XA CN201410050214A CN103772054B CN 103772054 B CN103772054 B CN 103772054B CN 201410050214 A CN201410050214 A CN 201410050214A CN 103772054 B CN103772054 B CN 103772054B
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Abstract
The present invention relates to a kind of slow-releasing granules trace element zinc fertilizer and production method thereof.Slow-releasing granules trace element zinc fertilizer is mixed by Zinc Sulphate Monohydrate, urea, CMC binding agent and water, and its production method is the viscosity of preparation binder solution is 4.5 to 6.5, Zinc Sulphate Monohydrate and returning charge is stirred and makes raw material.Atomization binder solution is sprayed into the raw material in tablets press and makes particle, separate 2mm to 4mm finished product raw material through Vibration Screen, divide three sections of temperature to after finished product raw material stoving through microwave dryer, be cooled to product.Zinc fertilizer constant product quality of the present invention, zinc content reaches more than 34%, and the degree of compactness of product particle is large, hardness is high, thus reaches the function of slow release long-acting, and production process accurately controls, three-waste free discharge, production cost is low, is desirable farm crop slowly releasing trace element zinc fertilizer.
Description
Technical field
The present invention relates to a kind of zinc fertilizer, particularly a kind of slow-releasing granules trace element zinc fertilizer and production method thereof.
Background technology
At present, the method of domestic production trace element zinc fertilizer, mainly extruding and plane disc granulation method, technique has naturally cooling point sieve method and hotblast stove to dry point sieve method, binding agent generally all uses urea, wherein be commonly most urea binding agent disc granulation and hotblast stove oven dry sub-sieve technique, this technique is simply rough, and particle zinc fertilizer obtained thus exists following shortcoming: density is little, zinc content is not high, insoluble in water thing is more, and easy dry linting, thus easily damages plant.Secondly at process aspect, the hot blast used of warm air drying generally uses raw coal or timber, easily to environment.Heat energy loss is larger, causes oven dry cost higher, directly increases product cost, cause commercially not having competitive power.Because technique is rough, quality product is made to be difficult to control and stable productivity.In sum, the manufacture method that innovative development is new, the seed output and quality of effective raising and stable zinc fertilizer, strengthens product competitiveness in the market, and the energy waste effectively reduced in production process runs off, reduce hazardous emission, optimization production environment, energy-saving and emission-reduction, build Green harmony ecotope, reduce and produce comprehensive operation cost, become the vital task of producing micro-zinc fertilizer.
Summary of the invention
The object of the invention is to provide the slow-releasing granules trace element zinc fertilizer and production method thereof that a kind of zinc content is high, effectively can reduce production cost, energy-saving and emission-reduction.
The technical scheme that its technical problem of solution of slow-releasing granules trace element zinc fertilizer of the present invention and production method thereof adopts is:
Slow-releasing granules trace element zinc fertilizer comprises Zinc Sulphate Monohydrate, urea, CMC binding agent, water mix, each component thing is Zinc Sulphate Monohydrate 90% to 98% by weight percentage, urea 2% to 5%, CMC binding agent 0.1% to 0.5%, water content 2% to 5%, zinc fertilizer zinc content is 33% to 35%.Urea is nitrogenously greater than 46%.
The production method of slow-releasing granules trace element zinc fertilizer completes according to the following steps:
A, preparation binder solution in agitation vat, add urea and CMC binding agent to add water stirrings, and the viscosity adjusting binder solution is 4.5 to 6.5; Zinc Sulphate Monohydrate and returning charge are stirred in the ratio of 10:1 and makes raw material;
B, high-density disc granulation drop in tablets press by described raw material, start tablets press by 20 to 30 revs/min of rotations, in tablets press, spray into the described binder solution of atomization simultaneously, the moisture of described raw material is kept to be less than 20%, after described raw material more than 90% granulating in tablets press, stop the described binder solution of spray, and by tablets press speed adjustment to 30 to 35 revs/min, operate and shut down discharging after 50 to 60 minutes;
C, screening be by feedstock transportation after described granulation to vibratory screening apparatus, sieve out 2mm to 3mm and 3mm to 4mm finished product raw material, dedusting collect and defective coarse fodder as returning charge;
D, microwave anti-caking dry be by described granulation, screening after finished product feedstock transportation on the conveying belt in microwave dryer, microwave dryer divides three sections of temperature to finished product raw material stoving, three sections of temperature are 85 DEG C to 95 DEG C, 90 DEG C to 110 DEG C, 100 DEG C to 135 DEG C respectively, conveying belt speed in microwave dryer is 3 to 5 ms/min, through air-cooled slow-releasing granules trace element zinc fertilizer after finished product raw material stoving.In microwave dryer, three sections of temperature the bests are 90 DEG C, 105 DEG C, 130 DEG C.
Positively effect of the present invention: slow-releasing granules trace element zinc fertilizer of the present invention and production method thereof solve zinc fertilizer constant product quality, zinc content is high, reach containing pure zinc more than 34%, in its production method, different rotating speeds is adopted before and after in granulation process, enhance the degree of compactness of made particle, improve product effective constituent Zn content, thus reach the function of slow release long-acting.Bian microwave dryer three sections of temperature controls are dried, and make the stability of quality product precisely controlled, thus reduce production consumption, improve quality and the stability of product.Exhausting hydrofuge on microwave dryer, can take away the moisture content that particle surface is evaporated in time, makes particle top layer not softening and causes caking.Dry because microwave drying belongs to clean energy, stopped the environmental pollution of trade effluent, waste gas, waste residue, alleviated the burden of environmental improvement, reduced the running cost of products production.
Embodiment
Below the present invention is described in further details:
Embodiment: in a preferred embodiment of the invention, slow-releasing granules trace element zinc fertilizer is mixed by Zinc Sulphate Monohydrate, urea, CMC binding agent and water, each component thing is Zinc Sulphate Monohydrate 90% to 98% by weight percentage, urea 2% to 5%, CMC binding agent 0.1% to 0.5%, water content 2% to 5%, zinc fertilizer zinc content >34%.Urea is nitrogenously greater than 46%.Production process is: 1, preparation raw material and binding agent:
1), after raw material sulfuric acid monohydrate zinc powder and returning charge being put into and stirred five minutes in the ratio of 10:1 in stainless steel stirrer, be delivered in the storage vat above sphere stainless steel tablets press for subsequent use.
2) preparing binder solution, is 1.7m being equipped with stirrer volume
3in agitation vat, add nitrogenous 200 kilograms, the urea being greater than 46%, then discharge water 1.5m in agitation vat
3, redispersion drops into the CMC binding agent 5 kilograms that content is 93%, and opens stirrer simultaneously, and after stirring half an hour, extract sample liquid chemical examination and detect, the viscosity of adjustment binder solution is 4.5 to 6.5, is then pumped in feeding box for subsequent use after filtration.
2, high-density disc granulation:
Disposable throwing raw material 600 kilograms in sphere stainless steel tablets press, starts tablets press and rotates, regulate frequency transformer, allow tablets press by 25 revs/min of rotation speed operation, and spray into atomization binder solution to tablets press simultaneously.According to the raw material humidity in tablets press; moisture is kept to be less than 20%; the raw material 1.5 tons that proportioning is good is added successively from storage vat; when after raw material more than 90% granulating in tablets press; stop spray binder solution; and tablets press rotating speed is adjusted to 35 revs/min by frequency transformer, the wind of shutting down below discharging to tablets press after 5 to 8 minutes that operates send in the hopper of material to be carried.
3, dedusting is screened:
Work in-process after raw material granulation deliver to storage hopper above vibratory screening apparatus through wind transfer lime, open vibratory screening apparatus and pulse dust collector, by vibratory screening apparatus, work in-process are sieved into the material of four specifications.A, defective thick returning charge load in bag, do returning charge use through being ground into 10 to 50 orders.B, the small-particle being less than 2mm and part meal material also load in bag does returning charge use.C, pulse dust collector are collected 50 to 150 object micro mist dirt and are used by doing returning charge in discharge opening loading bag.D, filter out 2mm to 4mm rounded grain finished product raw material and be divided into 2mm to 3mm and 3mm to 4mm and be discharged into two respectively independently No. 1, stainless steel, No. 2 material storage containers are used as to dry.
4, microwave anti-caking is dried and cooling.
1) frequency conversion fan is opened, frequency transformer is adjusted to 30 hertz, then No. 1 or No. 2 blanking device start buttons are pressed, delivered to successively above microwave dryer in hopper by 2mm to 3mm to be dried and 3mm to 4mm rounded grain finished product raw material in No. 1 or No. 2 material storage containers, wind passes through the small portion dust produced in journey and does returning charge by pulse dust collector collection.
2) conveying belt in microwave dryer is adjusted to 3 to 5 ms/min, then opens the blanking switch blanking below hopper, expect that the order reached is taken up in order of priority unlatching 1 to No. 13 microwave box according to be dried.The temperature controller of 1 to No. 5 microwave box is adjusted to 90 DEG C, 5 to No. 9 temperature control devices are adjusted to 105 DEG C, and 10 to No. 13 temperature control devices are adjusted to 130 DEG C, the exhausting hydrofuge on microwave dryer, the moisture content that particle surface is evaporated can be taken away in time, make particle top layer not softening and cause caking.When finished product raw material stoving goes out casing, press blower fan button, oven dry finished product is cooled.Finished product is through micro-lower material screen that shakes, and discharging is on cooling twice rotary conveyor.At micro-rotoclone collector shaken on sieve, micro-dust collection is done returning charge.The oven dry product sent here by cooling conveyor is directly loaded jumbo bag or delivers to automatic measuring packing bag packaging code heap by climbing belt.
The conforming product rate >98% that slow-releasing granules trace element zinc fertilizer of the present invention and production method thereof are produced, product hardness >17 newton, Zn content > 34% is the slowly releasing trace element zinc fertilizer being applicable to farm crop.
Claims (4)
1. a slow-releasing granules trace element zinc fertilizer, it is characterized in that slow-releasing granules trace element zinc fertilizer comprises Zinc Sulphate Monohydrate, urea, CMC binding agent, water mix, each component thing is described Zinc Sulphate Monohydrate 90% to 98% by weight percentage, described urea 2% to 5%, described CMC binding agent 0.1% to 0.5%, described water 2% to 5%, described zinc fertilizer zinc content 33% to 35%;
Wherein, described zinc fertilizer produces by the following method:
A, preparation binder solution, in agitation vat, add described urea and CMC binding agent and stirrings that add water, the viscosity adjusting binder solution is 4.5 to 6.5; Zinc Sulphate Monohydrate and returning charge are stirred in the ratio of 10:1 and makes raw material;
B, high-density disc granulation, described raw material is dropped in tablets press, start tablets press by 20 to 30 revs/min of rotations, in tablets press, spray into the described binder solution of atomization simultaneously, keep the moisture of described raw material to be less than 20%, after described raw material more than 90% granulating in tablets press, stop the described binder solution of spray, and by tablets press speed adjustment to 30 to 35 revs/min, operate and shut down discharging after 50 to 60 minutes;
C, screening, by feedstock transportation after described granulation to vibratory screening apparatus, sieve out 2mm to 3mm and 3mm to 4mm finished product raw material, and dedusting collection and defective coarse fodder are as returning charge;
D, microwave anti-caking are dried, by the finished product feedstock transportation after described granulation, screening on the conveying belt in microwave dryer, microwave dryer divides three sections of temperature to finished product raw material stoving, three sections of temperature are 85 DEG C to 95 DEG C, 90 DEG C to 110 DEG C, 100 DEG C to 135 DEG C respectively, conveying belt speed in microwave dryer is 3 to 5 ms/min, through air-cooled slow-releasing granules trace element zinc fertilizer after finished product raw material stoving.
2. zinc fertilizer according to claim 1, wherein said urea is nitrogenously greater than 46%.
3. a production method for slow-releasing granules trace element zinc fertilizer, comprises the following steps:
A, preparation binder solution, in agitation vat, add urea and CMC binding agent to add water stirrings, the viscosity adjusting binder solution is 4.5 to 6.5; Zinc Sulphate Monohydrate and returning charge are stirred in the ratio of 10:1 and makes raw material;
B, high-density disc granulation, described raw material is dropped in tablets press, start tablets press by 20 to 30 revs/min of rotations, in tablets press, spray into the described binder solution of atomization simultaneously, keep the moisture of described raw material to be less than 20%, after described raw material more than 90% granulating in tablets press, stop the described binder solution of spray, and by tablets press speed adjustment to 30 to 35 revs/min, operate and shut down discharging after 50 to 60 minutes;
C, screening, by feedstock transportation after described granulation to vibratory screening apparatus, sieve out 2mm to 3mm and 3mm to 4mm finished product raw material, and dedusting collection and defective coarse fodder are as returning charge;
D, microwave anti-caking are dried, by the finished product feedstock transportation after described granulation, screening on the conveying belt in microwave dryer, microwave dryer divides three sections of temperature to finished product raw material stoving, described three sections of temperature are 85 DEG C to 95 DEG C, 90 DEG C to 110 DEG C, 100 DEG C to 135 DEG C respectively, conveying belt speed in microwave dryer is 3 to 5 ms/min, through air-cooled slow-releasing granules trace element zinc fertilizer after finished product raw material stoving.
4. method according to claim 3, wherein said three sections of temperature are respectively 90 DEG C, 105 DEG C, 130 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410050214.XA CN103772054B (en) | 2014-02-13 | 2014-02-13 | Slow-releasing granules trace element zinc fertilizer and production method thereof |
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| CN201410050214.XA CN103772054B (en) | 2014-02-13 | 2014-02-13 | Slow-releasing granules trace element zinc fertilizer and production method thereof |
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| CN103772054B true CN103772054B (en) | 2016-03-30 |
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| CN104261932B (en) * | 2014-09-17 | 2016-03-30 | 湖北祥云(集团)化工股份有限公司 | A kind of containing zinc composite fertilizer and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2102362C1 (en) * | 1993-04-08 | 1998-01-20 | Малое предприятие (товарищество с ограниченной ответственностью) "Элис" | Turf granulated fertilizer and a method of its producing |
| CN1359880A (en) * | 2001-12-27 | 2002-07-24 | 中国科学院黑龙江农业现代化研究所 | Long-acting leaf spray for soybean |
| CN101302126A (en) * | 2008-06-23 | 2008-11-12 | 中国科学院东北地理与农业生态研究所 | Long-acting leaf spray for preventing maize bare tip |
| CN102633559A (en) * | 2012-04-06 | 2012-08-15 | 苏州安德鲁尹生物技术咨询有限公司 | Activated carbon slow-release zinc fertilizer and preparation method thereof |
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- 2014-02-13 CN CN201410050214.XA patent/CN103772054B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2102362C1 (en) * | 1993-04-08 | 1998-01-20 | Малое предприятие (товарищество с ограниченной ответственностью) "Элис" | Turf granulated fertilizer and a method of its producing |
| CN1359880A (en) * | 2001-12-27 | 2002-07-24 | 中国科学院黑龙江农业现代化研究所 | Long-acting leaf spray for soybean |
| CN101302126A (en) * | 2008-06-23 | 2008-11-12 | 中国科学院东北地理与农业生态研究所 | Long-acting leaf spray for preventing maize bare tip |
| CN102633559A (en) * | 2012-04-06 | 2012-08-15 | 苏州安德鲁尹生物技术咨询有限公司 | Activated carbon slow-release zinc fertilizer and preparation method thereof |
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