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Chelated calcium fertilizer prepared by utilizing shells as well as preparation method and application thereof

A technology for chelating calcium fertilizer and shells, applied in the application, organic fertilizer, fertilization device and other directions, can solve the problems of inability to use drip irrigation fertilizer, calcium is not easily soluble in water, etc. Effect

Inactive Publication Date: 2015-11-25
南宁汉和生物科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the calcium in shellfish shells is not easily soluble in water, so it cannot be directly used as a calcium-supplementing foliar fertilizer and liquid drip irrigation fertilizer

Method used

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  • Chelated calcium fertilizer prepared by utilizing shells as well as preparation method and application thereof
  • Chelated calcium fertilizer prepared by utilizing shells as well as preparation method and application thereof
  • Chelated calcium fertilizer prepared by utilizing shells as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A method for preparing chelated calcium fertilizer prepared by using shells includes the following steps:

[0046] A. Pretreatment: After the shells are rinsed with clean water, they are soaked in a 1.5% hydrochloric acid solution for 4 hours, and then the soaked shells are dried at 110°C and crushed to 80 mesh to obtain shell powder ;

[0047] B. Acidolysis: Weigh 1 part by weight of glacial acetic acid and dilute with water to a concentration of 20% to obtain an acetic acid solution. Place the acetic acid solution and 1.3 parts by weight of the shell powder in a reactor, and under stirring conditions React for 24 hours, after the reaction is completed, the reactants are subjected to solid-liquid separation, and the obtained liquid is the first reaction liquid;

[0048] C. Chelation: Add the first reaction solution to a chelating tank at 15°C, and then dropwise add sugar alcohol that accounts for 15% of the weight of the shell powder, drop it in 0.5h, and continue to react f...

Embodiment 2

[0053] A method for preparing chelated calcium fertilizer prepared by using shells includes the following steps:

[0054] A. Pretreatment: After the shells are rinsed with clean water, they are soaked in a dilute hydrochloric acid solution with a mass fraction of 1.5% for 4 hours, and then the soaked shells are dried at 110°C and crushed to 90 mesh to obtain shell powder ;

[0055] B. Acidolysis: Weigh 1 part by weight of glacial acetic acid and dilute with water to a concentration of 40% to obtain an acetic acid solution. Place the acetic acid solution and 2 parts by weight of the shell powder in the reactor, and under stirring conditions React for 26 hours, after the reaction, the reactants are subjected to solid-liquid separation, and the obtained liquid is the first reaction liquid;

[0056] C. Chelation: Add the first reaction solution to a chelating tank at 25°C, and then add dropwise sugar alcohols accounting for 20% of the weight of the shell powder, drop it for 0.5h, and co...

Embodiment 3

[0063] A method for preparing chelated calcium fertilizer prepared by using shells includes the following steps:

[0064] A. Pretreatment: After the shells are rinsed with clean water, they are soaked in a 1.5% dilute hydrochloric acid solution for 4 hours, and then the soaked shells are dried at 110°C and crushed to 100 mesh to obtain shell powder ;

[0065] B. Acidolysis: Weigh 1 part by weight of glacial acetic acid and dilute it with water to a concentration of 90% to obtain an acetic acid solution. Place the acetic acid solution and 2.2 parts by weight of the shell powder in the reactor, under stirring conditions Reaction for 30h, after the reaction, the reactants are subjected to solid-liquid separation, and the obtained liquid is the first reaction liquid;

[0066] C. Chelation: Add the first reaction solution to a chelating tank at 35°C, and then add dropwise sugar alcohol that accounts for 30% of the weight of the shell powder, drop it in 0.5 hours, and continue the reactio...

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Abstract

The invention provides a chelated calcium fertilizer prepared by utilizing shells as well as a preparation method and an application thereof. The chelated calcium fertilizer is mainly prepared from 1.3-2.2 parts by weight of shell powder, 1 part by weight of glacial acetic acid and 0.19-0.66 part by weight of sugar alcohol through the steps of pretreatment, acidolysis, chelating and fine filtering, wherein the sugar alcohol is composed of 1 part by weight of propanetriol, 4 parts by weight of glucose and 9 parts by weight of sorbitol. According to the chelated calcium fertilizer prepared by utilizing shells as well as the preparation method and application thereof, the calcium resource of the shells is fully utilized, and the environment-friendly effect is facilitated; the product has the advantages of being free of heavy metals, high in calcium content, rich in nutrients, easy to absorb and the like, can be used for crops, traditional Chinese medicine materials, and fruit trees for a long term, and does not generate any adverse effects on plants and human bodies.

Description

Technical field [0001] The invention belongs to the technical field of agricultural fertilizers, and specifically relates to a chelated calcium fertilizer prepared by using shells and a preparation method and application thereof. Background technique [0002] Plants can absorb and utilize many calcium sources, but most of these calcium sources are derived from inorganic calcium, such as calcium chloride and calcium nitrate. Sugar alcohol chelated calcium, known as the world's fifth-generation sugar alcohol chelating technology combined with acidification adsorption technology, enables the calcium contained in the product to be efficiently absorbed and utilized. Sugar alcohol chelated calcium uses sugar alcohol as a carrier to enter the phloem, so that calcium can be smoothly transported to the fruit organs of plants, and has a very good effect on preventing physiological diseases caused by calcium deficiency in plants. However, the existing sugar alcohol chelated calcium is stil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F1/00C05F1/02
CPCY02A40/20
Inventor 陈成陆舟罗培繁吴宁潘贤德
Owner 南宁汉和生物科技股份有限公司
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