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A urea and functional technology, applied in the field of functional urea and its preparation, can solve the problems of low utilization rate, high loss, fast volatilization, etc., and achieve the effects of improving fertilizer utilization rate, improving soil structure, and promoting nutrient absorption
Active Publication Date: 2012-10-10
启东欧常新材料有限公司
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[0002] Farmers in our country are used to using traditional common nitrogen fertilizers, such as ammonium bicarbonate, urea, ammonium sulfate, and ammonium chloride as topdressing fertilizers. The traditional elemental fertilizers are characterized by high consumption, high loss, fast volatilization, and low utilization rate. High investment and low return, and more importantly, the quality of agricultural products has gradually declined, and the volatile and lost nutrients have caused waste of resources and environmental pollution
[0003] Most of the existing slow-release nitrogen fertilizers adopt the coating and wrapping process, and the after effect is very good, but it is difficult to meet the needs of crop growth and growth in the early stage
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Embodiment 1
[0053] The component weight formula of the present embodiment is:
[0054] N46.4 Urine 1000 Mixture of trace elements 3
[0058] The weight ratio of the trace element mixture is as follows:
[0059] Zinc sulfate 1.2 Ammonium molybdate 0.3
[0060] Copper sulfate 0.6 Boric acid 0.9
[0061] Preparation:
[0062] In the second-stage evaporator section of the urea production process in the chemical plant, a mixing tank, a flow meter, and a booster pump are added to add the above-mentioned amino acid concentrate, (DA-6), (sodium synergist) , Trace elements are measured and heated to 95°C by the mixing tank, and then the flow meter is used to control the flow rate with a computer setting program in proportion, and then the booster pump injects the above molten liquid into the second-stage evapo...
Embodiment 2
[0064] The component weight formula of the present embodiment is:
[0065] N46.4 Urea 860 Mixture of trace elements 30
[0069] The weight ratio of the trace element mixture is:
[0070] Zinc sulfate 15 Ammonium molybdate 3
[0071] Copper sulfate 6 Boric acid 6
[0072] Preparation:
[0073]Sieve the urea granules, take the sieve (irregular small particles, powder for other purposes), heat to 85-90°C with steam, heat the amino acid concentrate to 90°C in a mixing tank, and use a flowmeter Under the control of the computer, the special pressure pump is pressurized and sprayed on the heated urea granules, and the urea is continuously turned by the force of the drum granulator to make it produce a weak acid reaction. The surface of the urea granules becomes sticky, and th...
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Abstract
The invention discloses a functional urea and a preparation method thereof. The functional urea is made by mixing and granulating common urea, various amino acid concentrated solutions, a plant growth regulator, microelements and a biological promoter. One of the preparation methods is that the materials are heated to the temperature of 98 DEG C by a pressure pump with a flowmeter in a two-stage normal temperature and normal pressure evaporator during the production process of the urea, the materials are quantitatively and continuously added in proportion, melted and combined, and granulated in a urea granulation tower to obtain a product, the product obtained is coated with a liquid anti-caking agent, cooled and packed, therefore, the functional urea is obtained. The functional urea has the advantages of no hormone, no toxicant and no harmful matter, little dosage, fast action, stable fertilizer efficiency and long-lasting effect. Compared with the conventional urea, the dosage of the functional urea can be reduced by 40-50% (10Kg of base fertilizer and 5Kg of additional fertilizer per mu); meanwhile, the functional urea has the functions of regulating PH value of soil, promoting nutrient absorption of crops, enhancing crop yield, improving crop quality, saving energy sources, protecting environment, as well as saving cost and increasing incomes for farmers.
Description
technical field [0001] The invention relates to a fertilizer, in particular to a functional urea and a preparation method thereof. Background technique [0002] Farmers in our country are used to using traditional common nitrogen fertilizers, such as ammonium bicarbonate, urea, ammonium sulfate, and ammonium chloride as topdressing fertilizers. The traditional elemental fertilizers are characterized by high consumption, high loss, fast volatilization, and low utilization rate. High investment and low return, and more importantly, the quality of agricultural products has gradually declined, and the volatile and lost nutrients have caused waste of resources and environmental pollution. [0003] Most of the existing slow-release nitrogen fertilizers adopt coating and wrapping technology, and the after effect is very good, but it is difficult to meet the needs of crop growth and growth in the early stage. Contents of the invention [0004] The purpose of the present invention...
Claims
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