Chelated calcium fertilizer and preparation method thereof

A technology of chelating calcium fertilizer and calcium nitrate, applied in the direction of nitrogen fertilizer, magnesium fertilizer, inorganic fertilizer, etc., can solve the problems that plants cannot absorb nutrients well, the effective utilization rate of fertilizer is not high, and the pipeline is easy to block, so as to improve and Correcting physiological diseases, good resistance to hard water, easy to absorb

Inactive Publication Date: 2015-04-01
QINGDAO AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, although the calcium content of this excessive calcium fertilizer meets the requirements, due to its low solubility, and in the process of fertigation, problems such as e

Method used

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  • Chelated calcium fertilizer and preparation method thereof
  • Chelated calcium fertilizer and preparation method thereof
  • Chelated calcium fertilizer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1-2

[0030] In this embodiment, the specific dosage of raw materials is formulated according to the following table 1. The specific preparation method is: first dissolve calcium nitrate and calcium chloride with an appropriate amount of water to form a uniform mixture, and pour it into a heating jacket and stirring device. In the reaction kettle, the temperature is controlled at 40-50°C, after adding citric acid, formic acid, acetic acid, and amino acid in sequence, start the stirring device to stir for a period of time to obtain the chelated calcium premix, and finally adjust the temperature to 60-80°C, Add sorbitol, mannitol, xylitol, ethylene glycol and glycerin and stir for a period of time, then cool to room temperature 20-30°C to obtain liquid chelated calcium fertilizer; pour the liquid chelated calcium fertilizer out of the reactor for production After a series of post-processing steps such as granule drying, crushing, and sieving, the final product is obtained.

[0031] Ta...

Embodiment 3-4

[0035]In this embodiment, the specific dosage of raw materials is formulated according to the following table 2. The specific preparation method is: first dissolve calcium nitrate and calcium chloride with appropriate amount of water to form a uniform mixture, and pour it into a heating jacket and stirring device. In the reaction kettle, the temperature is controlled at 40-50°C, after adding citric acid, formic acid, acetic acid, and amino acid in sequence, start the stirring device and stir for 70-80min under the condition of stirring rate of 200-300rad / min to obtain the chelated calcium preform. Mixture, finally adjust the temperature to 60-80°C, add sorbitol, mannitol, xylitol, ethylene glycol and glycerin, stir for 15-20min at a stirring rate of 300-400rad / min and then cool to The room temperature is 20-30°C to obtain the liquid chelated calcium fertilizer; the liquid chelated calcium fertilizer is poured out from the reaction kettle, and the final product is obtained after...

Embodiment 5-6

[0041] In this embodiment, the specific dosage of raw materials is formulated according to the following table 3. The specific preparation method is: first dissolve calcium nitrate and calcium chloride with an appropriate amount of water to form a uniform mixture, and pour it into a heating jacket and stirring device. In the reaction kettle, the temperature is controlled at 40-50°C, after adding citric acid, formic acid, acetic acid, and amino acid in sequence, start the stirring device and stir for 70-80min under the condition of stirring rate of 200-300rad / min to obtain the chelated calcium preform. Mixture, finally adjust the temperature to 60-80°C, add sorbitol, mannitol, xylitol, ethylene glycol and glycerin, stir for 15-20min at a stirring rate of 300-400rad / min and then cool to The liquid chelated calcium fertilizer is obtained at room temperature of 20-30°C; the liquid chelated calcium fertilizer is poured out from the reactor, and the liquid chelated calcium fertilizer...

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Abstract

The invention provides a chelated calcium fertilizer and a preparation method thereof. The chelated calcium fertilizer comprises the following raw materials: 30-45 parts of calcium nitrate, 10-15 parts of calcium chloride, 0-2 parts of citric acid, 1-4 parts of formic acid, 3-5 parts of amino acid, 0-2 parts of acetic acid, 2-7 parts of sorbitol, 1-3 parts of mannitol, 0-3 parts of xylitol, 1-3 parts of glycol and 3-6 parts of glycerin. The method comprises the following steps: (A) calcium nitrate and calcium chloride are dissolved with water and are uniformly mixed, then citric acid, formic acid, acetic acid and amino acid are sequentially added and stirred, and a chelated calcium pre-mixture is obtained; (B) sorbitol, mannitol, xylitol, glycol and glycerin are added into the chelated calcium pre-mixture, stirred and cooled, and liquid chelated calcium fertilizer is obtained; (C) the liquid chelated calcium fertilizer is granulated, dried, smashed and screened, and then the chelated calcium fertilizer is obtained. The chelated calcium fertilizer has the effects of high solubility, good hard-water resistance and good plant absorbing effect.

Description

technical field [0001] The invention relates to the field of fertilizer preparation, in particular to a chelated calcium fertilizer and a preparation method thereof. Background technique [0002] Calcium is one of the indispensable elements for plants. Plants absorb calcium ions from salts such as calcium nitrate and calcium chloride for their own growth needs. When plants lack calcium, the formation of cell walls is blocked, affecting cell division, or failing to form new cell walls , multinucleated cells appear. Therefore, the growth of plants will be inhibited during calcium deficiency, and in severe cases, young and tender organs (such as root tips and stem ends) will fester and die. Calcium fertilizer to supplement its calcium needs. [0003] However, although the calcium content of this excessive calcium fertilizer meets the requirements, due to its low solubility, and in the process of fertigation, problems such as easy precipitation and easy blockage of pipelines w...

Claims

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Application Information

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IPC IPC(8): C05G1/00
CPCC05C5/04C05G5/40C05C11/00C05D5/00
Inventor 杜志勇刘庆史衍玺李欢祝秀芝
Owner QINGDAO AGRI UNIV
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