CN103804069B - A kind of slow release fertilizer and production method thereof - Google Patents
A kind of slow release fertilizer and production method thereof Download PDFInfo
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Abstract
The invention discloses a kind of slow release fertilizer and production method thereof, the weight part of its feed composition is compound manure 600-700 part, coated slow-release nitrogenous fertilizer 300-400 part.Production method is: after ammonium chloride, ammonium sulfate, urea fragmentation being mixed with attapulgite, biochemical fulvic acid, Chelating state zinc, 1-naphthylacetic acid by regulation proportioning; send in tablets press; spray adds steam; enter after drying, cooling and screening in coating machine; spraying coated slow release formulation, drying obtains coated slow-release nitrogenous fertilizer, then with compound manure blending; packaging, obtains finished product.Slow release fertilizer of the present invention has that utilization rate of fertilizer is high, fertilizer efficiency period extends, crop yield increases income, improve quality of agricultural product, water retention sterilization, improvement and fertilizing soil advantage, product appearance Functionality, quality and appealing design, facilitates mechanized application, production cost is low, technique is simple, use safety, high efficiency.
Description
Technical field
The present invention relates to technical field of fertilizers, specifically a kind of slow release fertilizer and production method thereof.
Background technology
Fertilizer effect on the most crop of current China is still the highest with nitrogenous fertilizer.Nitrogen is the nutritive element acquired a special sense in plant life, and nitrogenous fertilizer is a kind of fertilizer that agricultural application is maximum, and nitrogen product mainly contains urea, ammonium chloride, ammonium sulfate, bicarbonate of ammonia, ammonium nitrate and liquefied ammonia.Common nitrogenous fertilizer, once being manured into soil, by under the effect of the enzyme of multiple soil microorganisms and secretion thereof, experiences a series of biochemical change, constantly changes its form, makes it be increased in movability in soil, even with water leaching loss with gaseous state volatilization loss.According to measuring and calculating, China's nitrogenous fertilizer this season utilization ratio is lower, is about 30%-35%, and major part enters water body and air by approach such as volatilization, leaching, runoffs.This not only wastes energy, and also will cause the accumulation of the objectionable impurities such as nitrate in soil and water and contaminate environment simultaneously.In addition, existing nitrogenous fertilizer, its nutrition is comparatively single, although can Promoting plant growth, cannot meet the demands for the scarce zinc of crop, resistance aspect, and uses for a long time and easily cause soil compaction, the consequences such as edatope deterioration.
Slow-release nitrogen fertilizer is fertilizer nutrient rate of release much smaller than the rate of release changing plant effective state nutrient after instantly-soluble nitrogenous fertilizer is manured into soil into, and slow-release nitrogen fertilizer is by chemistry or Physical is made, the nitrogenous fertilizer that can reduce product solubility, delay nutrient release rate, can utilize for plant constant absorption.Generally slow-release nitrogen fertilizer is divided into two classes: one is the organic long-acting nitrogenous fertilizer synthesized, and mainly comprises urea formaldehyde condensates, urea acetaldehyde condensation thing and minority amides; Two is coated ureas, and wrap other coating substances of one or more layers semipermeability or insoluble and the fertilizer made at particle surface, the normal coated fertilizer adopted has sulphur, resin, polyethylene, paraffin, pitch, grease, ground phosphate rock, fused(calcium magnesium)phosphate etc.These products all achieve good effect in raising utilization rate of nitrogen fertilizer, but because of complex manufacturing, manufacturing cost is high and fail by large scale application.For improving utilization rate of nitrogen fertilizer, alleviate the environmental pollution caused because of nitrogen fertilizer application, save energy, increase soil fertility, realize agricultural year, high-quality, efficient, ecological, safety, exploitation effect of increasing production be obvious, fertilizer efficiency continue long, cost is low, raw material environmental protection, less investment, the simple new slow release fertilizer of production have extremely important meaning.
Summary of the invention
A kind of slow release fertilizer and production method thereof are the object of this invention is to provide.
The present invention adopts following technical scheme for achieving the above object:
A kind of slow release fertilizer, the weight part of its feed composition is:
Compound manure 600-700 part
Coated slow-release nitrogenous fertilizer 300-400 part
Described compound manure N: P
2o
5: K
2o=1: (1.0-2.0): (1.0-2.0), compound manure includes nitric nitrogen 3%-7%;
The weight part of described its feed composition of coated slow-release nitrogenous fertilizer is:
Urea 450-700 part
Ammonium chloride 0-150 part
Ammonium sulfate 30-90 part
Attapulgite 40-100 part
Biochemical fulvic acid 30-60 part
Chelating state zinc 15-40 part
1-naphthylacetic acid 0.3-0.7 part
Coated slow release formulation 120-240 part;
The preparation method of described coated slow release formulation is as follows: 1. add water 100-150 part, polyvinyl alcohol 5-10 part, carboxymethyl cellulose 3-4 part and sodium lignosulfonate 2-3 part by weight, be heated to 70-80 DEG C and stir; 2. nano-sized carbon 4-6 part, Nano sepiolite powder 5-8 part, eucalyptus oil 2-3 part, tobacco liquid 1-2 part, tripoly phosphate sodium STPP 1-3 part, emulsifier op-10 0.5-1.0 part is added by weight to the compound after described stirring, 2000-3000rpm high speed dispersion 10-15min; 3. continue to be warming up to 80-90 DEG C, add polyvinyl acetate emulsion 10-15 part, propylene glycol phenylate 1-2 part, Lauryl Alcohol ester 2-3 part by weight, stir and get final product.
Described compound manure particle diameter 2.00-4.75mm; Described coated slow-release nitrogenous fertilizer particle diameter 2.00-4.75mm.
Described attapulgite fineness >=300 order.
Described biochemical fulvic acid fineness >=150 order.
Described Chelating state zinc molecular formula is Na
2znEDTA, containing Zn>=14.0%.
The production method of slow release fertilizer, comprises the following steps:
(1) ammonium chloride, ammonium sulfate are added in chain breaker carry out fragmentation by weight, urea carries out fragmentation through urea dedicated crusher, again the material of fragmentation is sent in twin-shaft mixer, after fully mixing with the attapulgite measured, biochemical fulvic acid, Chelating state zinc, 1-naphthylacetic acid, then send in granulating disc or rotary drum granulator;
(2) in granulating disc or rotary drum granulator, appropriate steam is added, material rolling reunion granulating to bed of material spray;
(3) particle after granulation is carried out one section of drying, one-step cooling and thickness screening, after screening, the particle of particle diameter 2.00-4.75mm enters in coating machine, is greater than 4.75mm macrobead and returns fragmentation, be less than 2.00mm particulate and return granulation;
(4) in coating machine, used by coated slow release formulation plunger metering pump to pass through atomizing nozzle even application particle surface, drying obtains coated slow-release nitrogenous fertilizer;
(5) by weight compound manure and coated slow-release nitrogenous fertilizer being sent into single bag prepares burden in blending equipment, through blending, automatic quantitative packing, and obtained finished product.
Advantage of the present invention is as follows:
(1) extend the fertilizer efficiency time, improve utilization rate of fertilizer.In product, nitric nitrogen, ammonium nitrogen are easily directly absorbed by crop, put forward fast fertilizer efficiency; After amidonitrogen need be converted into ammonium nitrogen under urase effect, just utilization absorbed by crops, extends fertilizer efficiency period; Because the high activity surface of attapulgite, nano pore structure can produce ion-exchange absorption effect, by effect " absorption " the chemical fertilizer nutrient molecule of hydrogen bond, surface tension, Van der Waals force and viscous force, slow down the speed that chemical fertilizer nutrient moves with current, thus control chemical fertilizer nutrient loss; Biochemical fulvic acid has higher biological activity and multi-function action, and acid and alkali-resistance, anti-divalent ion, water-soluble fabulous, resistance to hard water are strong, also have certain restraining effect, reduce ammonia loss by volatilization amount, with NH to soil urease liveness
4 +contact, can combine with it with the form of covalent linkage, be fixed, nutrient exempts from loss.Different shape nitrogen is combined with attapulgite, biochemical fulvic acid by product, and prepares slow-release material and carry out coating, more can delay the release period of nutrient, improves utilization rate of fertilizer, alleviates the pollution of water quality and air, protect environment.
(2) fertilizer efficiency is improved, increasing both production and income.1-naphthylacetic acid can promote the formation of plant adventive root and root, promotes expanding rapidly of fruit and block root stem tuber, improves fruit-setting rate of blooming, prevents fruit drop; Sulphur is the required middle amount nutritive element of plant growth, and zinc can promote the metabolism of crop substance in vivo, accelerates growing of crop, nitrogen, sulphur, zinc coordinate with biochemical fulvic acid more can improve crop economy proterties, strengthen crop anti-adversity, improve crop yield, improve quality of agricultural product.Use this product and can reduce rate of fertilizer application, indirectly save resource; Reduce fertilizer application frequency, reduce fertilising cost, increase economic benefit, can disposable using in a large number be avoided simultaneously and occur burning seedling phenomenon, decreasing the trouble topdressed in part dense planting crop later stage field.
(3) water retention sterilization, improvement and fertilizing soil.Coated slow release formulation, except having sustained release performance, also has sterilization and water conservation dual-use function; The significant energy source of humic acids as soil microorganisms and the matrix of soil beneficial microorganism breeding, the content of soil with organic matter can be increased, effectively improve the water of soil, fertilizer, gas, thermal conditions, make soil become loose, promote the formation of soil aggregate; Attapulgite has the feature such as good positively charged ion replacement property, adsorptivity, water-retentivity, agglutinating value(of coal), can improve the materialization property of soil, improve the hydrothermal condition of soil, can also adsorb the harmful element in soil, alleviate the pollution of soil.
(4) less investment, high efficiency.Raw material sources are wide, obtain easily, cheap, effectively reduce batching cost, coating agent material is nontoxic, free from extraneous odour, easily to degrade, there is not secondary pollution problem.Production technique is simple, and easy to operate, facility investment is few, and granulation balling ratio is high, enhances productivity, and reduces energy consumption.
(5) good product performance, wide market.Product appearance is smooth, mellow and full, and intensity is high, and moisture is low, does not lump, not efflorescence, and product granularity is even, does not emanate, and suitable for mechanization applies fertilizer.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
Embodiment 1
Total nutrient (N+P
2o
5+ K
2o)>=44%, specification is that 20-11-13(is chloride) slow release fertilizer, concrete technology operation steps is as follows:
(1) 135.1kg ammonium chloride (containing N-24.0%), 72.0kg ammonium sulfate (containing N-20.5%), 540.3kg urea (containing N-46.2%) is measured respectively, by ammonium chloride, ammonium sulfate through chain breaker fragmentation, urea is through urea dedicated crusher, then broken material is sent in twin-shaft mixer, mix with 54.0kg attapulgite, 36.0kg biochemical fulvic acid, 18.0kg Chelating state zinc, 0.5kg1-naphthylacetic acid, then send in granulating disc;
(2) in granulating disc, appropriate steam is added to the spray of said mixture material;
(3) adopt one section of drying, one-step cooling and thickness screening, after screening, the particle of particle diameter 2.00-4.75mm enters in coating machine, is greater than 4.75mm macrobead and returns fragmentation, be less than 2.00mm particulate and return granulation;
(4) qualified to particle diameter after screening per ton particle, uses plunger metering pump in coating machine, to spray 168.4kg coated slow release formulation by atomizing nozzle, drying, obtained coated slow-release nitrogenous fertilizer;
(5) above-mentioned coated slow-release nitrogenous fertilizer 326.7kg, compound manure (N-15%, P is measured
2o
5-17%, K
2o-19%, nitric nitrogen-5%) 673.3kg sends in single bag of batching blending equipment, through blending, automatic quantitative packing, obtained finished product.
The preparation method of described coated slow release formulation is as follows: 1. add water 100kg, polyvinyl alcohol 8kg, carboxymethyl cellulose 3kg and sodium lignosulfonate 2kg by weight, be heated to 75 DEG C and stir; 2. nano-sized carbon 5kg, Nano sepiolite powder 7kg, eucalyptus oil 2kg, tobacco liquid 2kg (tobacco leaf adds 2 times amount soak by water and obtains), tripoly phosphate sodium STPP 2kg, emulsifier op-10 0.8kg, 2000rpm high speed dispersion 15min is added by weight to the compound after described stirring; 3. continue to be warming up to 85 DEG C, add polyvinyl acetate emulsion 12kg, propylene glycol phenylate 1.5kg, Lauryl Alcohol ester 2kg by weight, stir and get final product.
Embodiment 2
Total nutrient (N+P
2o
5+ K
2o)>=41%, specification is 18-12-11(potassium sulfate type) slow release fertilizer, concrete technology operation steps is as follows:
(1) 41.5kg ammonium sulfate (containing N-20.5%), 622.8kg urea (containing N-46.2%) is measured respectively, ammonium sulfate is broken through chain breaker, urea is through urea dedicated crusher, then broken material is sent in twin-shaft mixer, mix with 81.0kg attapulgite, 51.9kg biochemical fulvic acid, 25.9kg Chelating state zinc, 0.4kg1-naphthylacetic acid, then send in rotary drum granulator;
(2) in rotary drum granulator, appropriate steam is added to the spray of said mixture material;
(3) adopt one section of drying, one-step cooling and thickness screening, after screening, the particle of particle diameter 2.00-4.75mm enters in coating machine, is greater than 4.75mm macrobead and returns fragmentation, be less than 2.00mm particulate and return granulation;
(4) qualified to particle diameter after screening per ton particle, uses plunger metering pump in coating machine, to spray 214.3kg coated slow release formulation by atomizing nozzle, drying, obtained coated slow-release nitrogenous fertilizer;
(5) above-mentioned coated slow-release nitrogenous fertilizer 392.2kg, compound manure (N-10%, P is measured
2o
5-20%, K
2o-18%, nitric nitrogen-7%) 607.8kg sends in single bag of batching blending equipment, through blending, automatic quantitative packing, obtained finished product.
The preparation method of described coated slow release formulation is as follows: 1. add water 120kg, polyvinyl alcohol 9kg, carboxymethyl cellulose 3kg and sodium lignosulfonate 3kg by weight, be heated to 78 DEG C and stir; 2. nano-sized carbon 6kg, Nano sepiolite powder 5kg, eucalyptus oil 3kg, tobacco liquid 2kg (tobacco leaf adds 2 times amount soak by water and obtains), tripoly phosphate sodium STPP 3kg, emulsifier op-10 0.6kg, 2500rpm high speed dispersion 12min is added by weight to the compound after described stirring; 3. continue to be warming up to 88 DEG C, add polyvinyl acetate emulsion 14kg, propylene glycol phenylate 2kg, Lauryl Alcohol ester 2.5kg by weight, stir and get final product.
Claims (6)
1. a slow release fertilizer, is characterized in that, the weight part of its feed composition is:
Compound manure 600-700 part
Coated slow-release nitrogenous fertilizer 300-400 part
Described compound manure N: P
2o
5: K
2o=1: (1.0-2.0): (1.0-2.0), compound manure includes nitric nitrogen 3%-7%;
The weight part of described its feed composition of coated slow-release nitrogenous fertilizer is:
Urea 450-700 part
Ammonium chloride 0-150 part
Ammonium sulfate 30-90 part
Attapulgite 40-100 part
Biochemical fulvic acid 30-60 part
Chelating state zinc 15-40 part
1-naphthylacetic acid 0.3-0.7 part
Coated slow release formulation 120-240 part;
The preparation method of described coated slow release formulation is as follows: 1. add water 100-150 part, polyvinyl alcohol 5-10 part, carboxymethyl cellulose 3-4 part and sodium lignosulfonate 2-3 part by weight, be heated to 70-80 DEG C and stir; 2. nano-sized carbon 4-6 part, Nano sepiolite powder 5-8 part, eucalyptus oil 2-3 part, tobacco liquid 1-2 part, tripoly phosphate sodium STPP 1-3 part, emulsifier op-10 0.5-1.0 part is added by weight to the compound after described stirring, 2000-3000rpm high speed dispersion 10-15min; 3. continue to be warming up to 80-90 DEG C, add polyvinyl acetate emulsion 10-15 part, propylene glycol phenylate 1-2 part, Lauryl Alcohol ester 2-3 part by weight, stir and get final product.
2. slow release fertilizer according to claim 1, is characterized in that: described compound manure particle diameter 2.00-4.75mm; Described coated slow-release nitrogenous fertilizer particle diameter 2.00-4.75mm.
3. slow release fertilizer according to claim 1, is characterized in that: described attapulgite fineness >=300 order.
4. slow release fertilizer according to claim 1, is characterized in that: described biochemical fulvic acid fineness >=150 order.
5. slow release fertilizer according to claim 1, is characterized in that: described Chelating state zinc molecular formula is Na
2znEDTA, containing Zn>=14.0%.
6. the production method of slow release fertilizer according to claim 1, is characterized in that comprising the following steps:
(1) ammonium chloride, ammonium sulfate are added in chain breaker carry out fragmentation by weight, urea carries out fragmentation through urea dedicated crusher, again the material of fragmentation is sent in twin-shaft mixer, after fully mixing with the attapulgite measured, biochemical fulvic acid, Chelating state zinc, 1-naphthylacetic acid, then send in granulating disc or rotary drum granulator;
(2) in granulating disc or rotary drum granulator, appropriate steam is added, material rolling reunion granulating to bed of material spray;
(3) particle after granulation is carried out one section of drying, one-step cooling and thickness screening, after screening, the particle of particle diameter 2.0-4.75mm enters in coating machine, is greater than 4.75mm macrobead and returns fragmentation, be less than 2.0mm particulate and return granulation;
(4) in coating machine, used by coated slow release formulation plunger metering pump to pass through atomizing nozzle even application particle surface, drying obtains coated slow-release nitrogenous fertilizer;
(5) by weight compound manure and coated slow-release nitrogenous fertilizer being sent into single bag prepares burden in blending equipment, through blending, automatic quantitative packing, and obtained finished product.
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Effective date of registration: 20180731 Address after: 231602 Anhui Hefei circular economy demonstration park five north side of Wei Road Patentee after: CNSG ANHUI HONG SIFANG FERTILIZER INDUSTRY CO., LTD. Address before: 230022 Qimen Road, Shushan District, Hefei, Anhui Province, No. 12 Patentee before: CNSG Anhui Hong Sifang Co., Ltd. |