CN105130687A - Macroelement water-soluble fertilizer containing polymorphic nitrogen and preparing method of macroelement water-soluble fertilizer - Google Patents
Macroelement water-soluble fertilizer containing polymorphic nitrogen and preparing method of macroelement water-soluble fertilizer Download PDFInfo
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- CN105130687A CN105130687A CN201510658557.9A CN201510658557A CN105130687A CN 105130687 A CN105130687 A CN 105130687A CN 201510658557 A CN201510658557 A CN 201510658557A CN 105130687 A CN105130687 A CN 105130687A
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Abstract
The invention discloses macroelement water-soluble fertilizer containing polymorphic nitrogen and a preparing method of the macroelement water-soluble fertilizer. The macroelement water-soluble fertilizer containing polymorphic nitrogen comprises, by mass, 12%-30% of urea, 4%-10% of ammonia water, 10%-35% of potassium nitrate, 10%-38% of ammonium dihydrogen phosphate, 15%-28% of monopotassium phosphate, 1%-2% of magnesium nitrate and 3%-5% of water-soluble polymerized substance. Due to the fact that the ammonia water is added, ammoniation of potassium nitrate, ammonium dihydrogen phosphate and monopotassium phosphate in the drying process is completed, the technological problem that the urea and a nitrate nitrogen material cannot be directly mixed is solved, and a product cannot be agglomerated by generated urea phosphate during storage. The final product contains nitrate nitrogen, ammonium nitrogen and amide nitrogen, the granular structure of soil is increased through the water-soluble polymerized substance, and the effects of preventing the soil from hardening and improving the soil are achieved.
Description
Technical field
The invention belongs to chemical fertilizer technical field, be specifically related to a kind of macroelement water-soluble fertilizer containing polymorphic nitrogen and preparation method thereof.Containing nitric nitrogen, ammonium nitrogen and amidonitrogen in the finished product.
Background technology
The nutrition release of traditional fertilizer is too fast, and fertilizer effective rate of utilization is low.Long-term chemical fertilizer of using in a large number is while to increasing crop yield, bring very large negative impact also to soil, farm crop and environment, research shows, common fertilizer is concentrated in a large number at the initial stage nutrient of using, discharged fast, because of leaching, decomposition, volatilization and losing, even can make crop failure because burning seedling; Macroelement water-soluble fertilizer is compared with the fertilizer such as traditional Chemical Mixed Fertilizer, composite fertilizer, slow release fertilizer, and it has instant, the remarkable advantage such as specific absorption is high, instant effect, water saving, saving of labor.China is one of poor country of global Freshwater resources, and the problems such as the seasonality of agricultural and industry skewness, regional lack of water are more outstanding, and development water-soluble fertilizer has important strategic importance.Therefore, water-soluble fertilizer obtains develop rapidly at home in recent years.In the long run, along with the continuous popularization of China's water-saving agriculture, facility constantly perfect, the advantage function of water-soluble fertilizer also will be embodied more fully.But existing water-soluble fertilizer commercially also exists following problem: of a great variety, quality product is uneven, raw material is adulterated, water-solublely do not reach national standard requirement, when product stores, caking is serious, impact is used, and in product, nitrogen element source is single, improving crop quality, improvement soil, increase in soil aggregate etc. also unsatisfactory.
For the problems referred to above, Application and Development in Different Crop containing polymorphic nitrogen and the water-soluble fertilizer that can increase soil aggregate realizes fertilizer efficiency utilization, reduce and drop into, protection of the environment, the effective way of improvement soil.The existing disclosed fertilizer technology produced containing nitric nitrogen, ammonium nitrogen and amidonitrogen adopts the method passing into gas ammonia in the bed of material, if application number is exactly this method disclosed in the Chinese patent application of 201110021138.6: pass into gas ammonia and carry out ammonification to nitrophosphate fertilizer in the bed of material, to control urea and nitrophosphate fertilizer reacts the quality generating urea nitrate.The method is only applicable to have ammonia and uses, stores the enterprise weighed, because ammonia has the major safety risks such as inflammable, explosive, toxicity is high, ammonia store content more than 10 tons just forms major hazard source, the domestic serious accident used about ammonia happens occasionally, a lot of compound manure manufacturing enterprise can not receive ammonia and uses and store power, and therefore the method has significant limitation.And the method just produces the production technology of compound manure, and compound manure and water-soluble fertilizer are two diverse products.
Summary of the invention
The object of this invention is to provide a kind of macroelement water-soluble fertilizer made containing polymorphic nitrogen, product contains nitric nitrogen, ammonium nitrogen, amidonitrogen three kinds of nitrogens, and plant recovery of nutrient is higher;
Another object of the present invention is by adding ammoniacal liquor, the ammonification of saltpetre, primary ammonium phosphate, potassium primary phosphate is completed in drying course, can not the process difficulties of direct mixture to solve urea and nitric nitrogen material, and the problem of caking when the Ureaphil prevented causes product to store;
Further order of the present invention is the crumb structure utilizing high molecular weight water soluble polymer matter to increase soil, reach the effect of soil of keeping soil from packing together, improve, and high molecular polymerization material also has the function preventing product from luming.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of macroelement water-soluble fertilizer containing polymorphic nitrogen, urea accounts for total mass percent 12%-30% dropping into material quantity, the ammoniacal liquor of mass percent concentration 25% accounts for total mass percent 4%-10% dropping into material quantity, saltpetre accounts for total mass percent 10%-35% dropping into material quantity, primary ammonium phosphate accounts for total mass percent 10%-38% dropping into material quantity, potassium primary phosphate accounts for total mass percent 15%-28% dropping into material quantity, magnesium nitrate accounts for total mass percent 1%-2% dropping into material quantity, high molecular weight water soluble polymer matter accounts for total mass percent 3%-5% dropping into material quantity.
The mass ratio of ammoniacal liquor/saltpetre is 1:5; The mass ratio of ammoniacal liquor/(primary ammonium phosphate+potassium primary phosphate) is 1:20.
Described high molecular weight water soluble polymer matter is polyacrylamide and polyacrylate, and add-on is determined according to soil regime and product degree of agglomeration.Polyacrylamide and polyacrylate not only can improve the crumb structure of soil, keep soil from packing together, and can also prevent recrystallization by absorption condensation water, make the agglomeration resistance effect that fertilizer keeps certain under higher humidity.The hydratability that magnesium nitrate has, can partially or completely hydrated inorganic salt, suppresses the fertilizer caused because of moisture to dissolve and capillary absorption, to prevent fertilizer agglomeration.Polyacrylamide, polyacrylate and magnesium nitrate have good water-soluble, can reach the quality standard of water-soluble fertilizer.
Containing nitric nitrogen, ammonium nitrogen and amidonitrogen that crop can absorb in product, the base fertilizer containing nitric nitrogen is saltpetre, and the base fertilizer containing ammonium nitrogen is ammoniacal liquor and primary ammonium phosphate, and the base fertilizer containing amidonitrogen is urea.Because three kinds of Nitrogen releasing times are different, decrease the same period due to nitrogen nutrients release too much, crop can not absorb the nutrient loss and environmental pollution that cause, and plant recovery of nutrient is higher.
The preparation method of the described macroelement water-soluble fertilizer containing polymorphic nitrogen, comprises the following steps:
(1) urea is pulverized: urea is crushed to 100 order-120 orders;
(2) mixing of materials: the saltpetre through measuring, primary ammonium phosphate, potassium primary phosphate, magnesium nitrate, high molecular weight water soluble polymer matter are added mixing and blending machine with the urea prepared from step (1) by Microcomputer Burden System, lead in proportion in the bed of material of mixing and blending machine after ammoniacal liquor being gasified, uniform stirring time 3 ~ 5min simultaneously.Because urea and the material containing nitric nitrogen can not direct mixtures, we did a large amount of tests, and urea and the direct mixture of nitric nitrogen material are reacted and generated urea nitrate, and within one hour at normal temperatures, material becomes pureed or seriously lumps, and can not use.Therefore need carrying out ammoniated treatment containing nitric nitrogen material, can not the process difficulties of direct mixture to solve urea and nitric nitrogen material, while also complete ammoniated treatment to primary ammonium phosphate, potassium primary phosphate, to prevent that Ureaphil causes product to lump;
(3) ammonification is dried: mixture enters dryer, drying course is utilized to complete the ammonification of saltpetre, primary ammonium phosphate, potassium primary phosphate, dryer Outlet Gas Temperature controls at 50 DEG C-60 DEG C, and drying time 15-20min, material moisture controls below 1%.Temperature and time particularly important in this process, if temperature is too high and overlong time can cause urea decomposition to produce a large amount of biurets, causes crop to burn seedling; If temperature is low and time too short meeting causes aminating reaction insufficient, product water content is high, affects quality product;
(4) cooling packing: after drying ammonification, material enters cooler, 10-15min, packed after cooling, finally made the macroelement water-soluble fertilizer containing polymorphic nitrogen cooling time.
Beneficial effect of the present invention:
1, in product simultaneously containing nitric nitrogen, ammonium nitrogen and amidonitrogen, wherein nitric nitrogen, ammonium nitrogen are available nitrogen, amidonitrogen is slow-release nitrogen.After incorporation of fertilizerin the soil, nitric nitrogen starts release for 5-7 days, and ammonium nitrogen starts release for 10-15 days, amidonitrogen starts release after 15 days, decrease the same period due to nitrogen nutrients release too much, crop can not absorb the nutrient loss and environmental pollution that cause, and plant recovery of nutrient is higher;
2, ammoniacal liquor is utilized to complete the ammonification of saltpetre in production process, solving urea and nitric nitrogen material can not the process difficulties of mixture, also complete the ammonification to primary ammonium phosphate, potassium primary phosphate, cause product to lump with the Ureaphil prevented, impact is used simultaneously;
3, product of the present invention: except containing except nitrogen, phosphorus, potassium element, also containing improvement soil, keep soil from packing together, increase the high molecular weight water soluble polymer matter of soil aggregate;
4, raw materials used (comprising product anti-caking material) be water-soluble effective raw material, product is water-soluble effective, complies with the national standard requirements completely;
5, utilize high molecular polymer can prevent recrystallization by absorption condensation water, make the agglomeration resistance effect that fertilizer keeps certain under higher humidity; Utilize the hydratability that magnesium nitrate has, can partially or completely hydrated inorganic salt, suppress the fertilizer caused because of moisture to dissolve and capillary absorption, product can long storage time not lump.
Accompanying drawing explanation
Figure of description 1 is preparation method's schema that the present invention contains the macroelement water-soluble fertilizer of polymorphic nitrogen.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
The present invention contains the macroelement water-soluble fertilizer of polymorphic nitrogen, urea accounts for total mass percent 12%-30% dropping into material quantity, the ammoniacal liquor of mass percent concentration 25% accounts for total mass percent 4%-10% dropping into material quantity, saltpetre accounts for total mass percent 10%-35% dropping into material quantity, primary ammonium phosphate accounts for total mass percent 10%-38% dropping into material quantity, potassium primary phosphate accounts for total mass percent 15%-28% dropping into material quantity, magnesium nitrate accounts for total mass percent 1%-2% dropping into material quantity, high molecular weight water soluble polymer matter accounts for total mass percent 3%-5% dropping into material quantity.
The mass ratio of ammoniacal liquor/saltpetre is 1:5; The mass ratio of ammoniacal liquor/(primary ammonium phosphate+potassium primary phosphate) is 1:20.
Described high molecular weight water soluble polymer matter is polyacrylamide and polyacrylate, and add-on is determined according to soil regime and product degree of agglomeration.
Containing nitric nitrogen, ammonium nitrogen and amidonitrogen that crop can absorb in product.Base fertilizer containing nitric nitrogen is saltpetre, and the base fertilizer containing ammonium nitrogen is ammoniacal liquor and primary ammonium phosphate, and the base fertilizer containing amidonitrogen is urea.
The preparation method of the described macroelement water-soluble fertilizer containing polymorphic nitrogen, comprises the following steps:
(1) urea is pulverized: urea is crushed to 100 order-120 orders;
(2) mixing of materials: the saltpetre through measuring, primary ammonium phosphate, potassium primary phosphate, magnesium nitrate, high molecular weight water soluble polymer matter are added mixing and blending machine with the urea prepared from step (1) by Microcomputer Burden System, lead in proportion in the bed of material of mixing and blending machine after ammoniacal liquor being gasified, uniform stirring time 3 ~ 5min simultaneously;
(3) ammonification is dried: mixture enters dryer, bake out temperature is utilized to complete the ammoniated treatment of saltpetre, primary ammonium phosphate, potassium primary phosphate, dryer Outlet Gas Temperature controls at 50 DEG C-60 DEG C, drying time 15-20min, and material moisture controls below 1%;
(4) cooling packing: after drying ammonification, material enters cooler, 10-15min, packed after cooling, made the macroelement water-soluble fertilizer containing polymorphic nitrogen cooling time.
Principle of the present invention is: add saltpetre in production process to obtain nitric nitrogen, adds urea to obtain amidonitrogen.By adding ammoniacal liquor, the ammonification of saltpetre, primary ammonium phosphate, potassium primary phosphate is completed in drying course, to prevent from producing urea nitrate and Ureaphil with urea reaction, solving urea and nitric nitrogen material can not the process difficulties of direct mixture, and caking when preventing Ureaphil to cause product to store, utilize again high molecular polymer and magnesium nitrate to prevent product from luming simultaneously.Product contains nitric nitrogen, ammonium nitrogen and the amidonitrogen that crop can absorb.
Below by example, the invention will be further elaborated:
The high potassium water-soluble fertilizer in embodiment 1:14-20-25, for 1 ton of products material norm quota of consumption:
Material name: input amount (kg) nitric nitrogen % ammonium nitrogen % amidonitrogen %P2O5%K2O%
Urea 1296.0
Ammoniacal liquor: 892.2
Saltpetre: 3504.916.1
Primary ammonium phosphate: 1101.36.7
Potassium primary phosphate: 26513.39.0
Magnesium nitrate: 17
Polyacrylamide: 20
Polyacrylate: 20
Add up to: 10004.93.56.020.025.1
100 order-120 object urea will be crushed to (containing N46.2% through computer metering, mass percent, 129 kilograms down together), saltpetre is (containing N14%, K2O46%) 350 kilograms, primary ammonium phosphate is (containing N12%, P2O561%) 110 kilograms, potassium primary phosphate is (containing P2O550%, K2O34%) 265 kilograms, magnesium nitrate 17 kilograms, polyacrylamide 20 kilograms, polyacrylate 20 kilograms joins mixing and blending machine, lead in the bed of material of mixing and blending machine after ammoniacal liquor (containing N25%) 89 kilograms being gasified simultaneously, dryer is entered after uniform stirring 4min, dryer Outlet Gas Temperature is 55 DEG C, dry ammonification 20min.Cool after drying materials ammonification, packaging after 15min cooling, obtains polymorphic nitrogen macroelement water-soluble fertilizer.Product is 14.4%-20.0-25.1% containing N-P2O5-K2O, wherein nitrate nitrogen content 4.9%, ammonium nitrogen content 3.5%, amidonitrogen content 6.0%, moisture 0.8%;
Embodiment 2:20-30-10 high phosphorus water-soluble fertilizer, for 1 ton of products material norm quota of consumption:
Material name: input amount (kg) nitric nitrogen % ammonium nitrogen % amidonitrogen %P2O5%K2O%
Urea 28513.2
Ammoniacal liquor: 461.2
Saltpetre: 1031.44.7
Primary ammonium phosphate: 3654.422.3
Potassium primary phosphate: 1557.85.3
Magnesium nitrate: 10
Polyacrylamide: 20
Polyacrylate: 16
Add up to: 10001.45.613.230.110.0
100 order-120 object urea will be crushed to (containing N46.2% through computer metering, mass percent, 285 kilograms down together), saltpetre is (containing N14%, K2O46%) 103 kilograms, primary ammonium phosphate is (containing N12%, P2O561%) 365 kilograms, potassium primary phosphate is (containing P2O550%, K2O34%) 155 kilograms, magnesium nitrate 10 kilograms, polyacrylamide 20 kilograms, polyacrylate 16 kilograms joins mixing and blending machine, lead in the bed of material of mixing and blending machine after ammoniacal liquor (containing N25%) 46 kilograms being gasified simultaneously, dryer is entered after uniform stirring 4min, dryer Outlet Gas Temperature is 55 DEG C, dry ammonification 15min.Cool after drying materials ammonification, packaging after 12min cooling, obtains polymorphic nitrogen macroelement water-soluble fertilizer.Product is 20.2%-30.1-10.0% containing N-P2O5-K2O, wherein nitrate nitrogen content 1.4%, ammonium nitrogen content 5.6%, amidonitrogen content 13.2%, moisture 0.7%.
The invention solves water-soluble fertilizer product nitrogen single, decrease the same period due to nitrogen nutrients release too much, crop can not absorb the problems such as the nutrient loss that causes and environmental pollution.Nitric nitrogen contained by product of the present invention, ammonium nitrogen are available nitrogen, amidonitrogen is slow-release nitrogen, effectively raise the utilization ratio of nitrogen element.Also containing improvement soil, keep soil from packing together, increase the high molecular weight water soluble polymer matter of soil aggregate.Ammoniacal liquor is added in producing, the ammonification of saltpetre, primary ammonium phosphate, potassium primary phosphate is completed in drying course, solving urea and nitric nitrogen material can not the process difficulties of direct mixture, and the Ureaphil prevented caking when causing product to store, utilize again high molecular polymer and magnesium nitrate to prevent fertilizer agglomeration simultaneously.Therefore, product can store for a long time and not lump.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. the macroelement water-soluble fertilizer containing polymorphic nitrogen, it is characterized in that, urea accounts for total mass percent 12%-30% dropping into material quantity, the ammoniacal liquor of mass percent concentration 25% accounts for total mass percent 4%-10% dropping into material quantity, saltpetre accounts for total mass percent 10%-35% dropping into material quantity, primary ammonium phosphate accounts for total mass percent 10%-38% dropping into material quantity, potassium primary phosphate accounts for total mass percent 15%-28% dropping into material quantity, magnesium nitrate accounts for total mass percent 1%-2% dropping into material quantity, high molecular weight water soluble polymer matter accounts for total mass percent 3%-5% dropping into material quantity.
2. the macroelement water-soluble fertilizer containing polymorphic nitrogen according to claim 1, it is characterized in that, the mass ratio of ammoniacal liquor/saltpetre is 1:5; The mass ratio of ammoniacal liquor/(primary ammonium phosphate+potassium primary phosphate) is 1:20.
3. the macroelement water-soluble fertilizer containing polymorphic nitrogen according to claim 1, it is characterized in that, described high molecular weight water soluble polymer matter is polyacrylamide and polyacrylate, and add-on is determined according to soil regime and product degree of agglomeration.
4. the macroelement water-soluble fertilizer containing polymorphic nitrogen according to claim 1, is characterized in that, containing nitric nitrogen, ammonium nitrogen and amidonitrogen in product; Base fertilizer containing nitric nitrogen is saltpetre, and the base fertilizer containing ammonium nitrogen is ammoniacal liquor and primary ammonium phosphate, and the base fertilizer containing amidonitrogen is urea.
5. a preparation method for the macroelement water-soluble fertilizer containing polymorphic nitrogen as claimed in claim 1, is characterized in that, comprise the following steps:
(1) urea is pulverized: urea is crushed to 100 order-120 orders;
(2) mixing of materials: the saltpetre through measuring, primary ammonium phosphate, potassium primary phosphate, magnesium nitrate, high molecular weight water soluble polymer matter are added mixing and blending machine with the urea prepared from step (1) by Microcomputer Burden System, lead in proportion in the bed of material of mixing and blending machine after ammoniacal liquor being gasified, uniform stirring time 3 ~ 5min simultaneously;
(3) ammonification is dried: mixture enters dryer, bake out temperature is utilized to complete the ammoniated treatment of saltpetre, primary ammonium phosphate, potassium primary phosphate, dryer Outlet Gas Temperature controls at 50 DEG C-60 DEG C, drying time 15-20min, and material moisture controls below 1%;
(4) cooling packing: after drying ammonification, material enters cooler, 10-15min, packed after cooling, made the macroelement water-soluble fertilizer containing polymorphic nitrogen cooling time.
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| CN110590438A (en) * | 2019-08-26 | 2019-12-20 | 唐山滦胜农业科技有限公司 | High-tower polymorphic nitrogen and potassium topdressing compound fertilizer and preparation method thereof |
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