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Calcium magnesium nitrate fertilizer and preparation method thereof

A calcium nitrate magnesium fertilizer, calcium nitrate technology, applied in the direction of nitrate fertilizer, nitrogen fertilizer, fertilization equipment, etc., can solve the problems of continuous automatic production, high production cost, low purity, etc., to promote photosynthesis, improve The effect of simple quality and process flow

Pending Publication Date: 2022-03-22
山西卓联锐科科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the shortcoming of prior art, provide a kind of calcium magnesium nitrate fertilizer and preparation method thereof, solve the problem of high energy consumption, high production cost, low purity and impossibility of continuous production of existing calcium magnesium nitrate fertilizer preparation method Technical issues such as automatic production

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  • Calcium magnesium nitrate fertilizer and preparation method thereof
  • Calcium magnesium nitrate fertilizer and preparation method thereof

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preparation example Construction

[0032] A preparation method of calcium magnesium nitrate fertilizer, comprising the steps of:

[0033] 1) Solution mixing: Prepare a certain amount of calcium nitrate mother liquor and magnesium nitrate mother liquor respectively, and then mix the prepared calcium nitrate solution and magnesium nitrate solution according to a certain proportion to obtain a mixed solution with a pH value of 6 to 7; The value is not harmful to plants and is conducive to the absorption of plants. The required amount of calcium nitrate mother liquor and magnesium nitrate mother liquor is directly used, without the traditional preparation of calcium nitrate first, and then adding magnesium oxide or magnesium hydroxide to obtain calcium magnesium nitrate solution.

[0034] 2) Evaporation and concentration: the mixed solution obtained in step 1) is evaporated and concentrated under normal pressure or negative pressure until the final temperature is 119-122° C. to obtain a concentrated solution, and t...

Embodiment 1

[0048]A calcium magnesium nitrate fertilizer, wherein: the calcium magnesium nitrate fertilizer includes magnesium element, calcium element and nitrogen element, the content of the magnesium element is 4.52 parts by weight, the content of the calcium element is 15.16 parts by weight, and the nitrogen The content of the element is 12.85 parts by weight.

[0049] Furthermore, the calcium and magnesium nitrate fertilizer is granular, and the particle size is 2mm-4mm oval crystal or hexagonal crystal.

[0050] A preparation method of calcium magnesium nitrate fertilizer, comprising the steps of:

[0051] 1) Solution mixing: Prepare the prepared calcium nitrate mother liquor and magnesium nitrate mother liquor with a mass ratio of 1:1, and then mix the prepared calcium nitrate solution and magnesium nitrate solution in a certain proportion to obtain a pH value of 6-7. liquid;

[0052] 2) Evaporation and concentration: the mixed solution obtained in step 1) was evaporated and conc...

Embodiment 2

[0059] A calcium magnesium nitrate fertilizer, wherein: the calcium magnesium nitrate fertilizer includes magnesium element, calcium element and nitrogen element, the content of the magnesium element is 7.81 parts by weight, the content of the calcium element is 5.6 parts by weight, the nitrogen The content of the element was 10.89 parts by weight.

[0060] Furthermore, the calcium and magnesium nitrate fertilizer is granular, and the particle size is 2mm-4mm oval crystal or hexagonal crystal.

[0061] A preparation method of calcium magnesium nitrate fertilizer, comprising the steps of:

[0062] 1) Solution mixing: Prepare the prepared calcium nitrate mother liquor and magnesium nitrate mother liquor with a mass ratio of 1:2, and then mix the prepared calcium nitrate solution and magnesium nitrate solution in a certain proportion to obtain a pH value of 6-7. liquid;

[0063] 2) Evaporation and concentration: the mixed solution obtained in step 1) was evaporated and concentr...

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Abstract

The invention relates to a calcium magnesium nitrate fertilizer and a preparation method thereof, belongs to the technical field of fertilizers, and solves the technical problems that an existing preparation method of the calcium magnesium nitrate fertilizer is high in energy consumption, cannot realize continuous production and the like. According to the solution, the calcium magnesium nitrate fertilizer comprises a magnesium element, a calcium element and a nitrogen element. The preparation method comprises the following steps: 1) solution mixing: mixing a calcium nitrate solution and a magnesium nitrate solution according to a certain proportion; 2) evaporating and concentrating: evaporating and concentrating the mixed solution obtained in the step 1) to obtain a concentrated solution; 3) cooling crystallization: cooling the concentrated solution obtained in the step 2) to 45 DEG C, pumping the concentrated solution into a crystallization kettle, adding a seed crystal when the crystallization kettle is cooled to a temperature slightly higher than the saturation temperature T of the concentrated solution, and then cooling at a certain cooling rate; and 4) solid-liquid separation: then pumping the final reaction liquid in the crystallization kettle in the step 3) into a centrifugal machine for solid-liquid separation. The method has the advantages of simple process flow, high product purity, no impurity, low energy consumption and low cost, and realizes continuous automatic production.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a calcium-magnesium nitrate fertilizer and a preparation method thereof. Background technique [0002] Calcium-magnesium nitrate fertilizer is a new type of high-efficiency calcium-magnesium compound fertilizer. It has the characteristics of increasing crop resistance, reducing disease occurrence, improving soil pH and soil pollution, and is one of the fertilizers widely used in international agriculture, especially economic crops and horticultural cultivation. one. Calcium magnesium nitrate fertilizer is an important water-soluble fertilizer, which mainly includes two water-soluble salts of calcium nitrate and magnesium nitrate. Among them, the nitrate nitrogen contained in calcium and magnesium nitrate fertilizer can be directly absorbed by plants, quickly supplementing nutrients for plants; water-soluble calcium can adjust soil pH and promote the absorption of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00C05G5/12
CPCC05C5/00C05G5/12C05C5/04Y02P20/10
Inventor 岳晓丽郭腾飞宋伟平武威朝
Owner 山西卓联锐科科技有限公司
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