CN105218241A - A kind of sulfur-bearing slow-release compound fertilizer and preparation method thereof - Google Patents
A kind of sulfur-bearing slow-release compound fertilizer and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to technical field of slow release fertilizer, especially a kind of sulfur-bearing slow-release compound fertilizer and preparation method thereof, after sulphur is carried out supersound process in the mixed mixed solution of dispersion agent, moistening agent, thickening material and water, ground again, and then to make between sulfur granule dispersion agent, moistening agent, thickening material abrim, prevent in sulphur process of lapping and produce dust accumulation, reduce the danger coefficient of production; And be sulfur granule under the effect of dispersion agent, moistening agent, thickening material, become hydrophilic group, make sulfur granule emulsification, simultaneously, sulfur-bearing phosphorus nitrogen composite fertilizer particle is prepared into after a small amount of sulfuric acid or vitriol and phosphorus ammonium being reacted, again the sulphur parcel slurry after emulsification is sprayed at its surface in drum-type packing machine, the sulphur content obtained containing ammonium phosphate sulfate slowly-releasing parcel is fertile is made to be 11 ~ 17%, nitrogenous 16 ~ 18%, phosphorous 42 ~ 43%, and prevent and reunite containing ammonium phosphate sulfate slowly-releasing parcel is fertile, extend the quality guaranteed period and improve quality.
Description
Technical field
The present invention relates to technical field of slow release fertilizer, especially a kind of sulfur-bearing slow-release compound fertilizer and preparation method thereof.
Background technology
Mainly contain two kinds containing the sulphur source in ammonium phosphate sulfate slow-release fertilizer, a kind of is sulphur trioxide in sulfuric acid, and one is simple substance sulphur.
When adopting the sulphur trioxide in sulfuric acid to be sulphur source, be that sulfuric acid and vitriol and phosphorus ammonium are reacted, prepare ammonium phosphate sulfate composite fertilizer, the method not only production cost is high, and nutrient loss after fertilising is very fast, Crop amount is less, and sulphur trioxide loss is larger; And owing to adopting sulfuric acid or vitriol process, and then cause surface easily to reunite caking, impact contains quality guaranteed period and the quality of ammonium phosphate sulfate slow-release fertilizer; When adopting simple substance sulphur as sulphur source, sulfur slurry and phosphorus ammonium are reacted in tubular reactor carry out granulation, drying again, obtained product, the danger of the method production process is larger, its reason is simple substance sulphur is flammable and explosive substance, in process of production, because the heating etc. that heats up in tubular reactor causes its danger coefficient higher; Further, the water insoluble and majority of organic solvent of simple substance sulphur, and then the difficulty causing sulphur and phosphorus ammonium to react is comparatively large, production cost is higher, and the content of sulphur in phospho-ammonium fertilizer is relatively less, and impact is containing the quality of ammonium phosphate sulfate slow-release fertilizer.
Summary of the invention
In order to solve the above-mentioned technical problem existed in prior art, the invention provides a kind of sulfur-bearing slow-release compound fertilizer and preparation method thereof.
Be achieved particular by following technical scheme:
A kind of sulfur-bearing slow-release compound fertilizer, comprise the integument of core layer and core surface, wherein core layer is sulphur phosphorus nitrogen composite fertilizer particle, and integument is sulphur parcel slurry, and its Jacket thickness is 0.1 ~ 0.15 times of sulphur phosphorus nitrogen composite fertilizer particle diameter.
This sulfur-bearing slow-release compound fertilizer sulphur content is 11 ~ 17%, nitrogenous 16 ~ 18%, phosphorous 42 ~ 43%.
The preparation method of sulfur-bearing slow-release compound fertilizer, comprises the following steps:
(1) sulphur parcel slurry preparation: after dispersion agent, moistening agent, thickening material are mixed with water, adopted ultrasonication 1-3min again, add sulfur granule wherein again, adopt ultrasonication 30-50s again, be placed in controlling wet-type finishing machine the granularity being ground to sulfur granule again and be≤the particle accounting of 0.073mm is >=98%, and its suspensibility is >=93%, stop grinding, obtain sulphur parcel slurry;
(2) sulphur phosphorus nitrogen composite fertilizer particle: sulfuric acid or vitriol are mixed with nitrogen phosphorus particle, wherein sulfuric acid or vitriol account for 7 ~ 10% of phosphorus ammonium weight, after its reaction 1-3h, send into granulation in tablets press, obtain sulphur phosphorus nitrogen composite fertilizer particle;
(3) sulfur-bearing slow-release compound fertilizer preparation: sulphur phosphorus nitrogen composite fertilizer particle is placed in drum-type packing machine, temperature in index drum formula packing machine is 30 ~ 40 DEG C, after the sulphur phosphorus nitrogen composite fertilizer particle time added in drum-type packing machine reaches 10-20s, again sulphur is wrapped up slurry and be sprayed at sulphur phosphorus nitrogen composite fertilizer particle surface, the amount of spraying is 1.3 ~ 1.7: 9.1 ~ 9.7 according to the mass ratio of sulphur parcel slurry and sulphur phosphorus nitrogen composite fertilizer particle, after being dried process 3 ~ 7min again, packaging, obtains sulfur-bearing slow-release compound fertilizer.
Described vitriol is one or several any ratio in calcium sulfate, zinc sulfate, potassium sulfate; Described nitrogen phosphorus particle is ammonium phosphate, Ureaphil, ammonium nitrate, both urea or both above any mixture.
Described ultrasonic wave, its frequency is 30-300Hz.
Described dispersion agent is organic dispersing agent.
Described organic dispersing agent is one or several any mixing of triethyl in base phosphoric acid, sodium lauryl sulphate, methyl amyl alcohol, derivatived cellulose, polyacrylamide.
Described moistening agent is aliphatic acid polyethenoxy ether, fatty alcohol polyoxypropylene ether, polyoxyethylene alkylphenol ether are 0.1 ~ 0.3: 1 ~ 5: 0.7 ~ 0.9 according to mass ratio.
Described thickening material is Natvosol, Vltra tears, sodium polyacrylate are 0.5 ~ 0.9: 3 ~ 7: 0.9 ~ 1.1 according to mass ratio.
The add-on of described sulfur granule is the 30-70% of sulphur parcel slurry material total amount; Described dispersion agent is the 3-6% of sulphur parcel slurry material total amount; Described moistening agent is 0.5 ~ 5% of sulphur parcel slurry material total amount; Described thickening material is 2 ~ 18% of sulphur parcel slurry material total amount.
Compared with prior art, technique effect of the present invention is embodied in:
After sulphur is carried out supersound process in the mixed mixed solution of dispersion agent, moistening agent, thickening material and water, ground again, and then to make between sulfur granule dispersion agent, moistening agent, thickening material abrim, prevent in sulphur process of lapping and produce dust accumulation, reduce the danger coefficient of production; And be sulfur granule under the effect of dispersion agent, moistening agent, thickening material, become hydrophilic group, make sulfur granule emulsification, simultaneously, sulfur-bearing phosphorus nitrogen composite fertilizer particle is prepared into after a small amount of sulfuric acid or vitriol and phosphorus ammonium being reacted, again the sulphur parcel slurry after emulsification is sprayed at its surface in drum-type packing machine, the sulphur content obtaining sulfur-bearing slow-release compound fertilizer is made to be 11 ~ 17%, nitrogenous 16 ~ 18%, phosphorous 42 ~ 43%, and prevent and reunite containing ammonium phosphate sulfate slowly-releasing parcel is fertile, extend the quality guaranteed period and improve quality.
Particular by spraying one deck sulphur parcel slurry at sulphur phosphorus nitrogen composite fertilizer particle surface, utilize sulphur hydrophobic property, what make to prepare wraps up fertile surface can not have an effect with the contact with moisture in air containing ammonium phosphate sulfate slowly-releasing, avoid the phenomenon that phosphorus nitrogen element dissolves, reunites, lumps in the environment that atmospheric moisture is larger, improve containing the fertile quality of ammonium phosphate sulfate slowly-releasing parcel, extend the quality guaranteed period.
Embodiment
Below in conjunction with concrete embodiment, further restriction is done to technical scheme of the present invention, but claimed scope is not only confined to done description.
Embodiment 1
The preparation method of sulfur-bearing slow-release compound fertilizer, comprises the following steps:
(1) sulphur parcel slurry preparation: after dispersion agent, moistening agent, thickening material are mixed with water, adopted ultrasonication 1min again, add sulfur granule wherein again, adopt ultrasonication 30s again, to be placed in controlling wet-type finishing machine the granularity being ground to sulfur granule be again the particle accounting of 0.073mm is 98%, and its suspensibility is 93%, stop grinding, obtain sulphur parcel slurry;
(2) sulphur phosphorus nitrogen composite fertilizer particle: sulfuric acid is mixed with nitrogen phosphorus particle, wherein sulfuric acid or vitriol account for 7% of phosphorus ammonium weight, after its reaction 1h, send into granulation in tablets press, obtain sulphur phosphorus nitrogen composite fertilizer particle;
(3) sulfur-bearing slow-release compound fertilizer preparation: sulphur phosphorus nitrogen composite fertilizer particle is placed in drum-type packing machine, temperature in index drum formula packing machine is 30 DEG C, after the sulphur phosphorus nitrogen composite fertilizer particle time added in drum-type packing machine reaches 10s, again sulphur is wrapped up slurry and be sprayed at sulphur phosphorus nitrogen composite fertilizer particle surface, the amount of spraying is 1.3: 9.1 according to the mass ratio of sulphur parcel slurry and sulphur phosphorus nitrogen composite fertilizer particle, after being dried process 3min again, packaging, obtains sulfur-bearing slow-release compound fertilizer.
Described ultrasonic wave, its frequency is 30Hz.
Described dispersion agent is triethyl base phosphoric acid.
Described moistening agent is aliphatic acid polyethenoxy ether, fatty alcohol polyoxypropylene ether, polyoxyethylene alkylphenol ether are 0.1: 1: 0.7 according to mass ratio.
Described thickening material is Natvosol, Vltra tears, sodium polyacrylate are 0.5: 3: 0.9 according to mass ratio.
The add-on of described sulfur granule is 30% of sulphur parcel slurry material total amount; Described dispersion agent is 3% of sulphur parcel slurry material total amount; Described moistening agent is 0.5% of sulphur parcel slurry material total amount; Described thickening material is 2% of sulphur parcel slurry material total amount.
Described nitrogen phosphorus particle is ammonium phosphate, Ureaphil any mixture.
Detect: sulphur parcel slurry is 0.1 times of sulphur phosphorus nitrogen composite fertilizer particle diameter; Should wrap up fertile sulphur content containing ammonium phosphate sulfate slowly-releasing is 11%, nitrogenous 16%, phosphorous 42%.
Embodiment 2
The preparation method of sulfur-bearing slow-release compound fertilizer, comprises the following steps:
(1) sulphur parcel slurry preparation: after dispersion agent, moistening agent, thickening material are mixed with water, adopted ultrasonication 3min again, add sulfur granule wherein again, adopt ultrasonication 50s again, being placed in controlling wet-type finishing machine the granularity being ground to sulfur granule is again that the particle accounting of 0.073mm is for being greater than 98%, and its suspensibility is for being greater than 93%, stopping grinding, obtaining sulphur parcel slurry;
(2) sulphur phosphorus nitrogen composite fertilizer particle: vitriol is mixed with nitrogen phosphorus particle, wherein sulfuric acid or vitriol account for 10% of phosphorus ammonium weight, after its reaction 3h, send into granulation in tablets press, obtain sulphur phosphorus nitrogen composite fertilizer particle;
(3) sulfur-bearing slow-release compound fertilizer preparation: sulphur phosphorus nitrogen composite fertilizer particle is placed in drum-type packing machine, temperature in index drum formula packing machine is 40 DEG C, after the sulphur phosphorus nitrogen composite fertilizer particle time added in drum-type packing machine reaches 20s, again sulphur is wrapped up slurry and be sprayed at sulphur phosphorus nitrogen composite fertilizer particle surface, the amount of spraying is 1.7: 9.7 according to the mass ratio of sulphur parcel slurry and sulphur phosphorus nitrogen composite fertilizer particle, after being dried process 7min again, packaging, obtains sulfur-bearing slow-release compound fertilizer.
Described vitriol is calcium sulfate.
Described nitrogen phosphorus particle is ammonium phosphate, any mixture of both urea.
Described ultrasonic wave, its frequency is 300Hz.
Described dispersion agent is any mixing of triethyl base phosphoric acid, sodium lauryl sulphate, methyl amyl alcohol, derivatived cellulose, polyacrylamide.
Described moistening agent is aliphatic acid polyethenoxy ether, fatty alcohol polyoxypropylene ether, polyoxyethylene alkylphenol ether are 0.3: 5: 0.9 according to mass ratio.
Described thickening material is Natvosol, Vltra tears, sodium polyacrylate are 0.9: 7: 1.1 according to mass ratio.
The add-on of described sulfur granule is 70% of sulphur parcel slurry material total amount; Described dispersion agent is 6% of sulphur parcel slurry material total amount; Described moistening agent is 5% of sulphur parcel slurry material total amount; Described thickening material is 18% of sulphur parcel slurry material total amount.
Detect: sulphur parcel slurry is 0.15 times of sulphur phosphorus nitrogen composite fertilizer particle diameter; Should wrap up fertile sulphur content containing ammonium phosphate sulfate slowly-releasing is 17%, nitrogenous 18%, phosphorous 43%.
Embodiment 3
The preparation method of sulfur-bearing slow-release compound fertilizer, comprises the following steps:
(1) sulphur parcel slurry preparation: after dispersion agent, moistening agent, thickening material are mixed with water, adopted ultrasonication 2min again, add sulfur granule wherein again, adopt ultrasonication 40s again, to be placed in controlling wet-type finishing machine the granularity being ground to sulfur granule be again the particle accounting being less than 0.073mm is >=98%, and its suspensibility is 99%, stop grinding, obtain sulphur parcel slurry;
(2) sulphur phosphorus nitrogen composite fertilizer particle: vitriol is mixed with nitrogen phosphorus particle, wherein sulfuric acid or vitriol account for 8% of phosphorus ammonium weight, after its reaction 2h, send into granulation in tablets press, obtain sulphur phosphorus nitrogen composite fertilizer particle;
(3) sulfur-bearing slow-release compound fertilizer preparation: sulphur phosphorus nitrogen composite fertilizer particle is placed in drum-type packing machine, temperature in index drum formula packing machine is 35 DEG C, after the sulphur phosphorus nitrogen composite fertilizer particle time added in drum-type packing machine reaches 15s, again sulphur is wrapped up slurry and be sprayed at sulphur phosphorus nitrogen composite fertilizer particle surface, the amount of spraying is 1.5: 9.5 according to the mass ratio of sulphur parcel slurry and sulphur phosphorus nitrogen composite fertilizer particle, after being dried process 5min again, packaging, obtains sulfur-bearing slow-release compound fertilizer.
Described vitriol is any ratio of calcium sulfate, zinc sulfate, potassium sulfate.
Described nitrogen phosphorus particle is any mixture of Ureaphil, ammonium nitrate, urea.
Described ultrasonic wave, its frequency is 100Hz.
Described dispersion agent is any mixing of triethyl base phosphoric acid, sodium lauryl sulphate, methyl amyl alcohol, derivatived cellulose.
Described moistening agent is aliphatic acid polyethenoxy ether, fatty alcohol polyoxypropylene ether, polyoxyethylene alkylphenol ether are 0.2: 3: 0.8 according to mass ratio.
Described thickening material is Natvosol, Vltra tears, sodium polyacrylate are 0.7: 5: 1 according to mass ratio.
The add-on of described sulfur granule is 50% of sulphur parcel slurry material total amount; Described dispersion agent is 5% of sulphur parcel slurry material total amount; Described moistening agent is 3% of sulphur parcel slurry material total amount; Described thickening material is 13% of sulphur parcel slurry material total amount.
Detect: sulphur parcel slurry is 0.13 times of sulphur phosphorus nitrogen composite fertilizer particle diameter; Should wrap up fertile sulphur content containing ammonium phosphate sulfate slowly-releasing is 13%, nitrogenous 17%, phosphorous 42%.
Embodiment 4
The preparation method of sulfur-bearing slow-release compound fertilizer, comprises the following steps:
(1) sulphur parcel slurry preparation: after dispersion agent, moistening agent, thickening material are mixed with water, adopted ultrasonication 3min again, add sulfur granule wherein again, adopt ultrasonication 30s again, be placed in controlling wet-type finishing machine the granularity being ground to sulfur granule again and be≤the particle accounting of 0.073mm is 98%, and its suspensibility is 93%, stop grinding, obtain sulphur parcel slurry;
(2) sulphur phosphorus nitrogen composite fertilizer particle: vitriol is mixed with nitrogen phosphorus particle, wherein sulfuric acid or vitriol account for 9% of phosphorus ammonium weight, after its reaction 2h, send into granulation in tablets press, obtain sulphur phosphorus nitrogen composite fertilizer particle;
(3) sulfur-bearing slow-release compound fertilizer preparation: sulphur phosphorus nitrogen composite fertilizer particle is placed in drum-type packing machine, temperature in index drum formula packing machine is 35 DEG C, after the sulphur phosphorus nitrogen composite fertilizer particle time added in drum-type packing machine reaches 15s, again sulphur is wrapped up slurry and be sprayed at sulphur phosphorus nitrogen composite fertilizer particle surface, the amount of spraying is 1.3: 9.7 according to the mass ratio of sulphur parcel slurry and sulphur phosphorus nitrogen composite fertilizer particle, after being dried process 6min again, packaging, obtains sulfur-bearing slow-release compound fertilizer.
Described vitriol is any ratio of calcium sulfate, zinc sulfate.
Described nitrogen phosphorus particle is any mixture of Ureaphil, urea.
Described ultrasonic wave, its frequency is 200Hz.
Described dispersion agent is any mixing of methyl amyl alcohol, derivatived cellulose, polyacrylamide.
Described moistening agent is aliphatic acid polyethenoxy ether, fatty alcohol polyoxypropylene ether, polyoxyethylene alkylphenol ether are 0.3: 5: 0.7 according to mass ratio.
Described thickening material is Natvosol, Vltra tears, sodium polyacrylate are 0.9: 3: 1.1 according to mass ratio.
The add-on of described sulfur granule is 40% of sulphur parcel slurry material total amount; Described dispersion agent is 4% of sulphur parcel slurry material total amount; Described moistening agent is 1% of sulphur parcel slurry material total amount; Described thickening material is 7% of sulphur parcel slurry material total amount.
Detect: sulphur parcel slurry is 0.14 times of sulphur phosphorus nitrogen composite fertilizer particle diameter; Should wrap up fertile sulphur content containing ammonium phosphate sulfate slowly-releasing is 15%, nitrogenous 16%, phosphorous 43%.
Claims (10)
1. a sulfur-bearing slow-release compound fertilizer, it is characterized in that, comprise the integument of core layer and core surface, wherein core layer is sulphur phosphorus nitrogen composite fertilizer particle, integument is sulphur parcel slurry, and its Jacket thickness is 0.1 ~ 0.15 times of sulphur phosphorus nitrogen composite fertilizer particle diameter.
2. sulfur-bearing slow-release compound fertilizer as claimed in claim 1, it is characterized in that, this sulfur-bearing slow-release compound fertilizer sulphur content is 11 ~ 17%, nitrogenous 16 ~ 18%, phosphorous 42 ~ 43%.
3. the preparation method of the sulfur-bearing slow-release compound fertilizer as described in any one of claim 1-2, is characterized in that, comprise the following steps:
(1) sulphur parcel slurry preparation: after dispersion agent, moistening agent, thickening material are mixed with water, adopted ultrasonication 1-3min again, add sulfur granule wherein again, adopt ultrasonication 30-50s again, be placed in controlling wet-type finishing machine the granularity being ground to sulfur granule again and be≤the particle accounting of 0.073mm is >=98%, and its suspensibility is >=93%, stop grinding, obtain sulphur parcel slurry;
(2) sulphur phosphorus nitrogen composite fertilizer particle: sulfuric acid or vitriol are mixed with nitrogen phosphorus particle, wherein sulfuric acid or vitriol account for 7 ~ 10% of phosphorus ammonium weight, after its reaction 1-3h, send into granulation in tablets press, obtain sulphur phosphorus nitrogen composite fertilizer particle;
(3) sulfur-bearing slow-release compound fertilizer preparation: sulphur phosphorus nitrogen composite fertilizer particle is placed in drum-type packing machine, temperature in index drum formula packing machine is 30 ~ 40 DEG C, after the sulphur phosphorus nitrogen composite fertilizer particle time added in drum-type packing machine reaches 10-20s, again sulphur is wrapped up slurry and be sprayed at sulphur phosphorus nitrogen composite fertilizer particle surface, the amount of spraying is 1.3 ~ 1.7: 9.1 ~ 9.7 according to the mass ratio of sulphur parcel slurry and sulphur phosphorus nitrogen composite fertilizer particle, after being dried process 3 ~ 7min again, packaging, obtains sulfur-bearing slow-release compound fertilizer.
4. the preparation method of sulfur-bearing slow-release compound fertilizer as claimed in claim 3, it is characterized in that, described vitriol is one or several any ratio in calcium sulfate, zinc sulfate, potassium sulfate; Described nitrogen phosphorus particle is ammonium phosphate, Ureaphil, ammonium nitrate, both urea or both above any mixture.
5. the preparation method of sulfur-bearing slow-release compound fertilizer as claimed in claim 3, it is characterized in that, described ultrasonic wave, its frequency is 30-300Hz.
6. the preparation method of sulfur-bearing slow-release compound fertilizer as claimed in claim 3, it is characterized in that, described dispersion agent is organic dispersing agent.
7. the preparation method of sulfur-bearing slow-release compound fertilizer as claimed in claim 6, it is characterized in that, described organic dispersing agent is one or several any mixing in triethyl hexyl phosphoric acid, sodium lauryl sulphate, methyl amyl alcohol, derivatived cellulose, polyacrylamide.
8. the preparation method of sulfur-bearing slow-release compound fertilizer as claimed in claim 3, it is characterized in that, described moistening agent is aliphatic acid polyethenoxy ether, fatty alcohol polyoxypropylene ether, polyoxyethylene alkylphenol ether be 0.1 ~ 0.3: 1 ~ 5: 0.7 ~ 0.9 according to mass ratio.
9. the preparation method of sulfur-bearing slow-release compound fertilizer as claimed in claim 3, is characterized in that, described thickening material is Natvosol, Vltra tears, sodium polyacrylate be 0.5 ~ 0.9: 3 ~ 7: 0.9 ~ 1.1 according to mass ratio.
10. the preparation method of sulfur-bearing slow-release compound fertilizer as claimed in claim 3, is characterized in that, the add-on of described sulfur granule is the 30-70% of sulphur parcel slurry material total amount; Described dispersion agent is the 3-6% of sulphur parcel slurry material total amount; Described moistening agent is 0.5 ~ 5% of sulphur parcel slurry material total amount; Described thickening material is 2 ~ 18% of sulphur parcel slurry material total amount.
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| CN106316649A (en) * | 2016-08-30 | 2017-01-11 | 贵州开磷集团股份有限公司 | Preparation method of special controlled-release fertilizer for cane shoots |
| CN106316719A (en) * | 2016-08-30 | 2017-01-11 | 贵州开磷集团股份有限公司 | Preparation method of special controlled-release fertilizer for Chinese water chestnuts |
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| CN108675856A (en) * | 2018-05-30 | 2018-10-19 | 贵州盈丰农业发展有限公司 | A kind of organic slow-release fertilizer and preparation method thereof |
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Application publication date: 20160106 |