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Ecological environment-friendly urea chelated compound fertilizer and preparation method thereof

A compound fertilizer and chelation technology, applied in the direction of fertilization device, fertilizer mixture, application, etc., to achieve the effect of alleviating the antagonism between ions and improving the utilization rate of fertilizer

Inactive Publication Date: 2014-09-17
山东史贝美肥料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]However, the current fertilizer market produces amino acid chelates of trace elements (copper, iron, zinc, manganese, chromium, etc.), and only the production of amino acid micro-fertilizers , when crops are fertilized, additional fertilizers containing a large amount of elements are required

Method used

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  • Ecological environment-friendly urea chelated compound fertilizer and preparation method thereof
  • Ecological environment-friendly urea chelated compound fertilizer and preparation method thereof
  • Ecological environment-friendly urea chelated compound fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 22kg of zinc sulfate and 18kg of borax to 94kg of compound amino acids, adjust the pH to about 7, and carry out a stirring reaction to make the compound amino acids chelate with boron and zinc; add 317kg of urea, 227kg of monoammonium phosphate, 250kg of potassium chloride, 20kg of diatomaceous earth compound fertilizer filler, 2kg of chelating compound fertilizer anti-caking agent, and then pulverize and stir; add urea-formaldehyde solution for spraying and granulation, in which the formaldehyde solution is first injected into the urine formaldehyde preparation tank through the formaldehyde solution pump, After stirring, inject molten urea with a concentration of 96.5% through a molten urine pump to fully mix it with formaldehyde solution, then add NaOH solution with a concentration of 50% to adjust the pH value of the mixture to 7.2; finally inject steam , so that the final temperature rose to 75 ° C. After reacting for 30-45 minutes, a urea-formaldehyde solution ...

Embodiment 2

[0028] Add 22kg of zinc sulfate and 18kg of borax to 94kg of compound amino acids, adjust the pH to about 7, and carry out a stirring reaction to make the compound amino acids chelate with boron and zinc; add 259kg of urea, 227kg of monoammonium phosphate, 250kg of potassium chloride, 8kg of diatomaceous earth compound fertilizer filler, 2kg of chelating compound fertilizer anti-caking agent, and then pulverize and stir; add urea-formaldehyde solution for spraying and granulation, wherein the formaldehyde solution is first injected into the urine formaldehyde preparation tank through the formaldehyde solution pump, After stirring, inject molten urea with a concentration of 96.5% through a molten urine pump to fully mix it with formaldehyde solution, then add NaOH solution with a concentration of 50% to adjust the pH value of the mixture to 7.2; finally inject steam , so that the final temperature rose to 75 ° C. After reacting for 30-45 minutes, a urea-formaldehyde solution wi...

Embodiment 3

[0032] Add 22kg of zinc sulfate and 18kg of borax to 94kg of compound amino acids, adjust the pH to about 7, and carry out a stirring reaction to make the compound amino acids chelate with boron and zinc; add 292kg of urea, 227kg of monoammonium phosphate, 250kg of potassium chloride, 15kg of diatomaceous earth compound fertilizer filler, 2kg of chelating compound fertilizer anti-caking agent, and then pulverized and stirred; then urea-formaldehyde solution was sprayed and granulated, wherein the formaldehyde solution was first injected into the urine formaldehyde preparation tank through the formaldehyde solution pump, After stirring, inject molten urea with a concentration of 96.5% through a molten urine pump to fully mix it with formaldehyde solution, then add NaOH solution with a concentration of 50% to adjust the pH value of the mixture to 7.2; finally inject steam , so that the final temperature rose to 75 ° C. After reacting for 30-45 minutes, a urea-formaldehyde soluti...

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Abstract

The invention belongs to the technical field of fertilizer production and in particular relates to an ecological environment-friendly urea chelated compound fertilizer and a preparation method thereof. Each ton of the ecological environment-friendly urea chelated compound fertilizer is prepared from the following raw materials: 227kg of monoammonium phosphate, 250kg of potassium chloride, 22kg of zinc sulfate, 18kg of borax, 94kg of compound amino acid, 50kg-120kg of urea formaldehyde and 259kg-317kg of urea. The compound fertilizer takes amino acid as a main component, is rich in nutritional elements such as nitrogen, phosphorus, potassium, boron, zinc and the like necessary for crops, has a function of relieving the ion antagonism effect, and is an efficient, environment-friendly and long-acting novel fertilizer product with an increased utilization rate. A test on crops such as wheat, peanuts, rice, tomatoes and the like shows that the yields of the wheat, peanuts, rice and tomatoes are increased by 10.4%, 11.5%, 13.6% and 15.18% respectively after the urea chelated slow release compound fertilizer is applied in comparison with a general fertilizer.

Description

[0001] (1) Technical field [0002] The invention belongs to the technical field of fertilizer manufacture, and in particular relates to a urea chelated ecological environment-friendly compound fertilizer and a preparation method thereof. [0003] (2) Background technology [0004] In the past 10 years, people have studied chelate technology, selected appropriate chelating agents, chelated trace elements, and maximized the utilization rate of fertilizers. As a chelating agent, amino acids have moderate stability constants, are not disturbed by soil pH and other ions, and can be directly absorbed by crops. According to the different chelating agents used, in the fertilizer industry, EDTA (ethylenediaminetetraacetic acid) and citric acid are the most used in the United States. EDTA has a strong chelating ability for all transition elements, but its price is high and its use is limited; my country once advocated the use of humic acid as a chelating agent to reduce the cost, bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/02C05G3/60
Inventor 刘佃平曹兴华杨茂德
Owner 山东史贝美肥料股份有限公司
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