Method for preparing fulvic acid ammonium phosphate fertilizer containing organic titanium through recrystallization process

A fulvic acid ammonium phosphate and organic titanium technology, applied in the field of ammonium phosphate fertilizer, can solve problems such as undiscovered and miscellaneous bands

Inactive Publication Date: 2012-07-11
福建超大现代农业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0029] 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 i

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Preparation of metatitanic acid:

[0055] 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;

[0056] B, the newly precipitated metatitanic acid is washed with distilled water to remove chloride ions;

[0057] 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.

[0058] (2) Preparation of titanium citrate chelate:

[0059] a. Preparation of citric acid-metatitanic acid suspension mixture:

[0060] The ti...

Embodiment 2

[0070] (1) Preparation of metatitanic acid:

[0071] 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;

[0072] B, the newly precipitated metatitanic acid is washed with distilled water to remove chloride ions;

[0073] 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.

[0074] (2) Preparation of titanium citrate chelate:

[0075] a. Preparation of citric acid-metatitanic acid suspension mixture:

[0076] The ti...

Embodiment 3

[0086] (1) Preparation of metatitanic acid:

[0087] 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;

[0088] B, the newly precipitated metatitanic acid is washed with distilled water to remove chloride ions;

[0089] 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.

[0090] (2) Preparation of titanium citrate chelate:

[0091] a. Preparation of citric acid-metatitanic acid suspension mixture:

[0092] The ti...

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Abstract

The invention relates to a method for preparing a fulvic acid ammonium phosphate fertilizer containing organic titanium through a recrystallization process. The method is characterized by comprising the following steps of: preparing a newly precipitated metatitanic acid by neutralizing an iced solution of a titanium salt with an alkali; using the newly precipitated metatitanic acid to substitute chlorides and sulfates of titanium for being used as a raw material for synthesizing citric acid titanium without chloride and sulfide ions; taking the newly precipitated metatitanic acid as a titanium source, taking citric acid as an acid solvent and a chelating agent, and synthesizing a saturated solution of the citric acid titanium through a microwave hot-melting chelating process; and mixing diammonium phosphate containing crystal water with fulvic acid ammonium according to the proportion, co-melting at the temperature of not less than 40 DEG C for preparing a compound body of a fulvic acid ammonium salt and an ammonium phosphate salt, keeping the temperature of the compound body of the fulvic acid ammonium salt and the ammonium phosphate salt at the temperature which is not less than 40 DEG C, adding the solution of the citric acid titanium according to the proportion, uniformly mixing, cooling and performing recrystallization. According to the method disclosed by the invention, a humic acid type phosphate fertilizer synergist and the organic titanium capable of strongly promoting the absorption of a phosphorus element and the operation of plants are dissolved into a whole against the problem of low utilization rate of the phosphate fertilizer, and a double-superimposed phosphate fertilizer synergist is formed.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a method for preparing ammonium phosphate fertilizer containing organic titanium by a recrystallization process. Background technique [0002] Phosphorus is an essential nutrient element for plant growth. In agricultural production, phosphorus fertilizer is the second largest type of fertilizer. 74% of the cultivated land in my country is deficient in phosphorus. The application of phosphorus fertilizer has become an essential measure to ensure crop yield increase. [0003] According to the comprehensive scientific and technological level of my country's current agriculture, the utilization rate of fertilization of agricultural crops in my country is only about 30%, while the seasonal utilization rate of phosphorus fertilizer in my country is only 10% to 20%, resulting in a large amount of fertilizer loss and waste and environmental pollution. [0004] How to impr...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04C05G3/80
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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