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Chelated calcium fertilizer prepared from oyster shell, and preparation method and application thereof

A technology for chelating calcium fertilizers and oyster shells, applied in the application, fertilization device, fertilizer mixture and other directions, can solve the problems of inability to use drip irrigation fertilizer, calcium is not easily soluble in water, etc., to improve appearance quality, increase value, and increase crop resistance. Disease and disease resistance effects

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 from oyster shell, and preparation method and application thereof
  • Chelated calcium fertilizer prepared from oyster shell, and preparation method and application thereof
  • Chelated calcium fertilizer prepared from oyster shell, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A kind of preparation method of the chelated calcium fertilizer that utilizes oyster shell to prepare comprises the steps:

[0049] A. Pretreatment: Rinse the oyster shells with clean water, soak them in dilute hydrochloric acid solution with a mass fraction of 1% for 4 hours, then dry the soaked oyster shells at 110°C, and crush them to 35 meshes to obtain oyster shell powder;

[0050] B. Acid hydrolysis: 5 parts by weight of concentrated hydrochloric acid with a mass fraction of 20% and 1.5 parts by weight of the oyster shell powder are placed in a reactor, reacted for 2 hours under stirring conditions, and the reactants are separated into solid and liquid after the reaction , the obtained liquid is the first reaction liquid;

[0051] C, chelation: at 15°C, add the first reaction solution into the chelation tank, add dropwise the sugar alcohol accounting for 15% of the weight of the oyster shell powder, drop it in 0.5h, and continue the reaction for 0.5h to obtain T...

Embodiment 2

[0056] A kind of preparation method of the chelated calcium fertilizer that utilizes oyster shell to prepare comprises the steps:

[0057] A. Pretreatment: After rinsing the oyster shells with clean water, soak them in a dilute hydrochloric acid solution with a mass fraction of 1% for 4 hours, then dry the soaked oyster shells at 110°C, and crush them to 50 meshes to obtain oyster shell powder;

[0058] B. Acid hydrolysis: 4 parts by weight of concentrated hydrochloric acid with a mass fraction of 25% and 1.6 parts by weight of the oyster shell powder are placed in a reactor, and reacted for 3 hours under stirring conditions. After the reaction is completed, the reactants are solid-liquid Separation, the obtained liquid is the first reaction liquid;

[0059] C. Chelation: at 25°C, add the first reaction solution into the chelation tank, then add dropwise the sugar alcohol accounting for 20% of the weight of the oyster shell powder, drop it in 0.5h, and continue the reaction f...

Embodiment 3

[0066] A kind of preparation method of the chelated calcium fertilizer that utilizes oyster shell to prepare comprises the steps:

[0067] A. Pretreatment: After rinsing the oyster shells with clean water, soak them in a dilute hydrochloric acid solution with a mass fraction of 1% for 4 hours, then dry the soaked oyster shells at 110°C, and crush them to 80 meshes to obtain oyster shell powder;

[0068] B. Acid hydrolysis: 3.33 parts by weight of concentrated hydrochloric acid with a mass fraction of 30% and 2 parts by weight of the oyster shell powder are placed in a reactor, and reacted for 4 hours under stirring conditions. After the reaction is completed, the reactant is solid-liquid Separation, the obtained liquid is the first reaction liquid;

[0069] C. Chelation: at 35°C, add the first reaction solution into the chelation tank, then add dropwise the sugar alcohol accounting for 30% of the weight of the oyster shell powder, drop it in 0.5h, and continue the reaction fo...

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Abstract

The invention provides a chelated calcium fertilizer prepared from oyster shell, and a preparation method and application thereof. The chelated calcium fertilizer is mainly prepared by carrying out pretreatment, acid hydrolysis, chelation, refined filtration and the like on the following components in parts by weight: 1.5-2 parts of oyster shell powder, 2.7-5 parts of concentrated hydrochloric acid and 0.2-0.6 part of sugar alcohol. The mass percent of the concentrated hydrochloric acid is 20-37%. The weight ratio of the solute in the concentrated hydrochloric acid to the oyster shell powder is 1:(1.5-2). The sugar alcohol is composed of the following components in parts by weight: 1 part of glycerol, 4 parts of glucose and 9 parts of sorbitol. The chelated calcium fertilizer can fully utilize the calcium agent resource of the oyster shell, is beneficial to environment friendliness, has the advantages of no heavy metal, high calcium content, rich nutrients and the like, can be easily absorbed, can be used on crops, traditional Chinese medicinal materials and fruit trees for a long time, and can not generate any adverse effect on the plant and human body.

Description

technical field [0001] The invention belongs to the technical field of agricultural fertilizers, and in particular relates to a chelated calcium fertilizer prepared from oyster shells, a preparation method and application thereof. Background technique [0002] There are many calcium sources that plants can absorb and utilize, 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 fifth generation of sugar alcohol chelated technology in the world and the combination of acidification adsorption technology, enables the calcium contained in the product to be absorbed and utilized efficiently. 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 s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
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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