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Method for preparing organic titanium-organic potassium salt organic fertilizer by salting-out process

The technology of organic fertilizer and organic titanium is applied in the manufacturing field of functional organic fertilizer, which can solve the problems of miscellaneous belt and the like, and achieve the effect of strong chelating ability, stable performance and high content.

Inactive Publication Date: 2012-07-04
福建超大现代农业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] Above patent document discloses directly the chloride of water-soluble titanium, or the sulfate salt of titanium as the raw material of synthetic organic titanium citric acid chelate compound, the weak point of its existence is that in the organic titanium citric acid chelate synthesized Miscellaneous with a large number of chloride ions or sulfide ions
[0022] There is no report on the use of alkaline (pH ≥ 8) organic potassium salts as salt precipitation neutralizers to neutralize salt precipitation to prepare organic titanium-organic potassium salt composite functional fertilizers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] (1) Preparation of metatitanic acid:

[0058] a. Add 1000ml of ice water at 0°C~5°C to a 1500ml beaker, and add 10ml of hydrochloric acid and 20ml of titanium tetrachloride dropwise under the stirring of an electric stirrer to generate a titanium tetrachloride hydrochloric acid solution. The sodium hydroxide solution neutralizes the titanium tetrachloride hydrochloric acid solution, the temperature of the solution is controlled at ≤5°C, and the pH value is 7.0~8.0, so that metatitanic acid is precipitated in cold water at ≤5°C;

[0059] B, the newly precipitated metatitanic acid is washed with distilled water to remove chloride ions;

[0060] c. After the metatitanic acid that has been washed to remove chloride ions is removed by a centrifuge to remove part of the adsorbed water, it can be used for acid-soluble chelation.

[0061] (2) Preparation of titanium citrate chelate:

[0062] a. Preparation of citric acid-metatitanic acid suspension mixture:

[0063] The tita...

Embodiment 2

[0074] (1) Preparation of metatitanic acid:

[0075] a. Add 1000ml of ice water at 0°C~5°C to a 1500ml beaker, and add 10ml of hydrochloric acid and 20ml of titanium tetrachloride dropwise under the stirring of an electric stirrer to generate a titanium tetrachloride hydrochloric acid solution. The sodium hydroxide solution neutralizes the titanium tetrachloride hydrochloric acid solution, the temperature of the solution is controlled at ≤5°C, and the pH value is 7.0~8.0, so that metatitanic acid is precipitated in cold water at ≤5°C;

[0076] B, the newly precipitated metatitanic acid is washed with distilled water to remove chloride ions;

[0077] c. After the metatitanic acid that has been washed to remove chloride ions is removed by a centrifuge to remove part of the adsorbed water, it can be used for acid-soluble chelation.

[0078] (2) Preparation of titanium citrate chelate:

[0079] a. Preparation of citric acid-metatitanic acid suspension mixture:

[0080] The tita...

Embodiment 3

[0091] (1) Preparation of metatitanic acid:

[0092] a. Add 1000ml of ice water at 0°C~5°C to a 1500ml beaker, and add 10ml of hydrochloric acid and 20ml of titanium tetrachloride dropwise under the stirring of an electric stirrer to generate a titanium tetrachloride hydrochloric acid solution. The sodium hydroxide solution neutralizes the titanium tetrachloride hydrochloric acid solution, the temperature of the solution is controlled at ≤5°C, and the pH value is 7.0~8.0, so that metatitanic acid is precipitated in cold water at ≤5°C;

[0093] B, the newly precipitated metatitanic acid is washed with distilled water to remove chloride ions;

[0094] c. After the metatitanic acid that has been washed to remove chloride ions is removed by a centrifuge to remove part of the adsorbed water, it can be used for acid-soluble chelation.

[0095] (2) Preparation of titanium citrate chelate:

[0096] a. Preparation of citric acid-metatitanic acid suspension mixture:

[0097] The tita...

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Abstract

The invention relates to a method for preparing organic titanium-organic potassium salt organic fertilizer by a salting-out process. The method is characterized by comprising the following steps of: neutralizing titanium salt ice water solution with a base to prepare a new precipitate metatitanic acid; replacing titanium chloride or sulfate with new precipitate metatitanic acid to be used as a raw material for synthesizing titanium citrate; synthesizing titanium citrate with new precipitate metatitanic acid as a titanium source and citric acid as an acid solvent and chelating agent by a microwave hot-melt chelating process; and neutralizing titanium citrate saturated solution with potassium carbonate powder, and salting out to prepare organic titanium-organic potassium fertilizer. According to the invention, synthesized organic titanium is completely free of chlorine or sulfur ion; the acid solvent and chelating agent, namely citric acid for synthesizing organic titanium has good acidity and neutrality, strong metal ion chelating capability, stable performance, and lower price than other organic acids, thus the comprehensive indexes are optimal when citric acid is selected; and the obtained organic titanium-organic potassium compound organic fertilizer is powder fertilizer, thereby being good in stability, convenient for storage and transportation, good in product water solubility and convenient for use.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a method for manufacturing functional organic fertilizers composed of organic titanium and organic potassium salts. Background technique [0002] Fertilizer is a strategic material to ensure national food security, and the material basis for maintaining and improving soil fertility to achieve sustainable agricultural development. [0003] Chemical fertilizers are still an important means of production in agricultural production at present, and the absorption and utilization rate of chemical fertilizers in the soil by plants is very low. According to the measurement of my country's current comprehensive agricultural science and technology level, the utilization rate of agricultural crop fertilization in my country is only about 30%, causing a large number of Fertilizer loss and waste and environmental pollution. [0004] The research and development of new fertiliz...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 徐福乐翁莹冰张美娟林秀翁仁发
Owner 福建超大现代农业集团有限公司
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