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Process for producing microelement complex fertilizer

A production process and a technology for mixing fertilizers, which are applied in fertilizer mixtures, fertilization devices, applications, etc., can solve the problems of inconvenience and low purity, and achieve the effects of high effect, large stability constant, and correction of adverse reactions.

Inactive Publication Date: 2011-04-06
苏州联胜化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since this patent is mainly applicable to organic complex trace element fertilizers of a single element, but the purity is not high and contains a large amount of chloride ions or sulfate ions, which is basically consistent with the previous patent. The former is an improvement of the latter, so it is also the same in practical applications. very inconvenient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In a 2000ml four-necked flask with stirring and a thermometer, add 1000ml of water, add 2.22mol EDTA (653.7g of 99% raw material), add NaOH 3.05mol (381.2g of 32% raw material) under stirring, heat up to 70°C, respectively Add iron 1.343mol (Fe(OH) with iron content 51% 3 Raw material 147.0g), copper 0.0472mol (basic copper carbonate raw material 5.7g of copper content 53%), manganese 0.728mol (manganese carbonate raw material 94.1g of manganese content 42.5%), zinc 0.0765mol (zinc oxide of 80% zinc content Raw material 6.25g). The total molar amount of metal elements is 2.1947 mol, and the molar ratio of EDTA to metal elements is 1.01:1.00. Gradually raise the temperature to 90-98°C, keep it warm for 30-60 minutes, and the reaction solution is basically transparent. Adjust the pH to 5.0-7.0 with EDTA or alkali, and keep warm for another ten minutes. In this formula, 28.57 g of boric acid (99% the same below) and 10.25 g of sodium molybdate (99% the same below) can b...

Embodiment 2

[0038] In a 2000ml four-necked flask with stirring and a thermometer, add 1000ml of water, add 1.176mol EDTA (99% raw material 346.8g, DTPA 0.723mol (98% raw material 253.8g), add NaOH 3.798mol (32% raw material 253.8g) under stirring 474.7.0g), warming up to 70°C, adding iron 0.716mol (Fe(OH) with iron content 51% 3 Raw material 78.4g), copper 0.236mol (basic copper carbonate raw material 28.3g of copper content 53%), manganese 0.546mol (manganese carbonate raw material 70.6g of manganese content 42.5%), zinc 0.382mol (zinc oxide of 80% zinc content Raw material 31.2 g). The total mole amount of metal elements is 1.880mol, the total mole amount of EDTA and DTPA is 1.899mol, and the molar ratio of chelating agent to trace metal elements and alkali is 1.01:1.00:2.015. Gradually raise the temperature to 95-98°C, keep it warm for 30-60 minutes, and the reaction solution is basically transparent. Adjust the pH to 5.0-7.0 with EDTA or alkali, and keep warm for another ten minutes...

Embodiment 3

[0042] In a 2000ml four-necked flask with stirring and a thermometer, add 1000ml of water, add 1.93mol EDTA (99% raw material 569.6g), add KOH 2.72mol (90% raw material 169.5g) under stirring, MgO raw material 0.493mol (95 % raw material 20.7g) is warming up to 70 ℃, adds iron 0.61mol (the Fe(OH) of iron content 51% 3 Raw material 66.8g), copper 0.079mol (basic copper carbonate raw material 9.5g of copper content 53%), manganese 0.582mol (manganese carbonate raw material 85.18g of manganese content 42.5%), zinc 0.642mol (zinc oxide of 80% zinc content Raw material 50.8g). The total molar amount of metal elements other than K and Mg was 1.913 mol, and the molar ratio of EDTA to metal elements was 1.01:1.00. Gradually raise the temperature to 95-98°C, keep it warm for 30-60 minutes, and the reaction solution is basically transparent. Adjust the pH to 5.5-6.5 with EDTA or KOH dilute solution, and then keep warm for ten minutes. In this formula, 57.2g of boric acid and 2.5g of ...

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Abstract

The invention discloses a process for producing a microelement complex fertilizer. The method comprises the following steps of: reacting a chelant (ethylene diamine tetraacetic acid (EDTA) or diethylene triamine pentaacetic acid (DTPA) or a mixture of the EDTA and the DTPA), a metallic element compound and alkali (sodium hydroxide, potassium hydroxide or ammonia water) in a molar ratio of the chelant to the metallic element compound to the alkali of 1.01:1:2 (when the metallic element is a Fe element, the molar ratio is 1.01:1:1) at the temperature of between 50 and 125 DEG C for 20 to 60 minutes to obtain EDTA or DTPA chelating element complex fertilizer solution with required proportion content; and adjusting the pH of a product, filtering and drying to obtain a product. In the process, the product is prepared by a one-step process, the obtained product can be adjusted in a certain range (but cannot go beyond the reach of chelating), and a series of products are obtained to meet the specific requirements of various plants in various areas. The process is used for agriculture, forestry, flowers, gardening, soilless culture and the like and can correct adverse reaction due to plant deficiency.

Description

technical field [0001] The invention relates to a production process of trace element mixed fertilizer. Background technique [0002] At present, the trace element mixed fertilizers on the fertilizer market are not very effective, whether it is soil fertilization or foliar spraying. Microelement mixed fertilizers generally contain humic acid, amino acid, or citric acid micro-fertilizers, and their utilization rates are low during use. [0003] In the prior art, the Chinese patent No. 200410029779.6 discloses a production process of organic chelated trace element fertilizers, the process includes extracting humic substances from lignite, through precipitation, to obtain the required liquid, adding organic chelating agent lemon Acid or its salts and trace elements, the resulting liquid is adjusted to neutrality with pH, ​​and after drying, the product of the present invention is obtained. Although the present invention is currently the only technological process for retainin...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 蒋全良李学民
Owner 苏州联胜化学有限公司
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