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High-concentration liquid calcium fertilizer and preparation method thereof

A liquid calcium, high-concentration technology, applied in the direction of fertilization device, fertilizer mixture, application, etc., can solve the problems of long time, low calcium content, high production cost, etc., and achieve the effect of fast absorption, high calcium content, and low use cost

Active Publication Date: 2014-05-28
上海永通生态工程股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing liquid calcium products have low calcium content, and the preparation process requires a certain amount of pressure, the entire preparation process takes a long time, and the production cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] First, under normal temperature and pressure conditions, 33.4 kg of calcium carbonate powder was added to the container, and 166.5 kg of dilute nitric acid solution with a mass concentration of 25% was slowly added under stirring, and the reaction exothermic caused the temperature of the solution to rise rapidly. After all the raw materials have been added, keep the solution heated to continue the neutralization reaction at a temperature close to boiling until the generated calcium nitrate solution boils and becomes neutral.

[0025] Then, filter, evaporate and concentrate the calcium nitrate solution to 91.0 kg, add 9 kg of ethylene glycol under constant stirring, and stir for about 0.5 hour.

[0026] Finally, the above solution is left to stand until the temperature of the solution drops back to room temperature and the air bubbles are eliminated, so as to obtain a high-concentration liquid calcium fertilizer.

[0027] The liquid calcium fertilizer prepared in this ex...

Embodiment 2

[0029] First, under normal temperature and pressure conditions, 37.7 kg of calcium carbonate powder was added to the container, and 187.7 kg of dilute nitric acid solution with a mass concentration of 25% was slowly added under stirring, and the reaction exothermic caused the temperature of the solution to rise rapidly. After all the raw materials have been added, keep the solution heated to continue the neutralization reaction at a temperature close to boiling until the generated calcium nitrate solution boils and becomes neutral.

[0030] Then, filter, evaporate and concentrate the calcium nitrate solution to 93.0 kg, add 7 kg of natural sorbitol solution under constant stirring, and stir for about 0.5 hour.

[0031] Finally, the solution is left to stand until the temperature of the solution drops back to room temperature and the air bubbles are eliminated, so as to obtain a high-concentration liquid calcium fertilizer.

[0032] The liquid calcium fertilizer prepared in thi...

Embodiment 3

[0034] First, under normal temperature and pressure conditions, 41.1 kg of calcium carbonate powder was added to the container, and 204.9 kg of dilute nitric acid solution with a mass concentration of 25% was slowly added under stirring, and the temperature of the solution rose rapidly due to the exothermic reaction. After all the raw materials have been added, the solution is heated to keep the solution at a temperature close to boiling to continue the neutralization reaction until the generated calcium nitrate solution boils and becomes neutral.

[0035] Then, filter, evaporate and concentrate the calcium nitrate solution to 97.0 kg, add 3 kg of natural mannitol solution under constant stirring, and stir for about 0.5 hour.

[0036] Finally, the liquid is left to stand until the temperature of the solution drops back to room temperature and the air bubbles are eliminated, so as to obtain a high-concentration liquid calcium fertilizer.

[0037] The liquid calcium fertilizer p...

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Abstract

The invention discloses a high-concentration liquid calcium fertilizer and a preparation method thereof. The high-concentration liquid calcium fertilizer contains the following components in percentage by weight: 54.2%-66.7% of calcium nitrate, 3.0%-9.0% of one or more of a natural sugar alcohol solution, glycerol and ethylene glycol and 30.3%-36.8% of water. The preparation method comprises the following steps: (a) adding a preset amount of calcium carbonate powder to a container under the condition of normal temperature and normal pressure, and then adding a 25wt% dilute nitric acid solution for neutralization reaction to generate a calcium nitrate solution; (b) adding a preset amount of one or more of the natural sugar alcohol solution, the glycerol and the ethylene glycol to the generated calcium nitrate solution, and reacting to prepare the high-concentration liquid calcium fertilizer. The preparation method disclosed by the invention can be used for saving the production cost by carrying out preparation through lower-cost raw material calcium carbonate and is safe in operational process. The prepared liquid calcium fertilizer is high in calcium content, high in dilution times, low in usage cost, dissolved in water by 100% and stable in property, has the advantages of fast absorption and good effect and can be widely applied to various crops.

Description

technical field [0001] The present invention relates to a medium amount element liquid fertilizer and a preparation method thereof, in particular to a high-concentration liquid calcium fertilizer and a preparation method thereof. Background technique [0002] During the growth of plants, a large amount of nutrients are needed, including macronutrients, as well as medium and microelements. Calcium is an intermediate element and plays a very important role in the whole growth process of plants. Calcium is one of the main components of plant cell walls and cell membranes. In addition, calcium also has important functions such as promoting the growth and secretion of plant cells and acting as an activator of many enzymes in plant nutrition and physiology. Calcium also affects the growth and quality of plants in many ways. Insufficient supply will cause a variety of physiological diseases, such as bitter pit disease and water core disease in apples, black heart disease in pears...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
Inventor 石称华钱志红连晓敏
Owner 上海永通生态工程股份有限公司
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