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Preparation process of efficient humic acid diammonium phosphate

A humic acid diammonium phosphate and preparation process technology, applied in the direction of ammonium orthophosphate fertilizer, alkaline orthophosphate fertilizer, phosphate fertilizer, etc. The effect of increasing yield and excellent agrochemical effect

Inactive Publication Date: 2011-06-08
YUNNAN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the existing method easily destroys the physiological activity of humic acid, does not affect the existing production process of diammonium phosphate, and the production cost is high
Existing methods are only suitable for the preparation of humic acid compound fertilizer, liquid fertilizer, etc. in small and medium-sized plants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Ammonium humate containing 30% to 50% by weight of water-soluble humic acid is used as the activator. In the return part of the traditional diammonium phosphate production process, the addition amount is 10% to 20% by weight. Or paste into the return material;

[0016] (2) Mix the diammonium phosphate return material containing ammonium humate evenly, then add it to the drum for granulation, and carry out granulation, ammonification and drying together with the pre-neutralization slurry.

[0017] 600,000 tons / year diammonium phosphate production plant, 300 tons / hour of diammonium phosphate return material, 35 tons / hour of powdered ammonium humate with a water-soluble humic acid content of 40% is added to the return belt, and the addition amount is diammonium phosphate 10% of the ammonium output, the mixed and returned material after the addition is added to the drum granulator, and the phosphoric acid slurry with a neutralization degree of 1.3 from the pre-neutralizatio...

Embodiment 2

[0019] 600,000 tons / year diammonium phosphate production plant, 285 tons / hour of diammonium phosphate return material, 35 tons / hour of powdered ammonium humate with a water-soluble humic acid content of 40% is added to the return belt, and the addition amount is diammonium phosphate 10% of the ammonium output; add 16 tons / hour of auxiliary bentonite at the return belt, and the addition amount is 5% of the output of diammonium phosphate. Ammonification granulation is carried out together with phosphoric acid slurry with a concentration of 1.3. The material from the granulator is dried, cooled, and sent to the packaging unit to obtain about 3.5% of water-soluble humic acid and effective P 2 o 5 About 40.5%, N about 16% high-efficiency humic acid diammonium phosphate product.

Embodiment 3

[0021] 600,000 tons / year diammonium phosphate production plant, 285 tons / hour of diammonium phosphate return material, 50 tons / hour of powdered ammonium humate with a water-soluble humic acid content of 40% is added to the return belt, and the addition amount is diammonium phosphate 15% of the ammonium output, the mixed and returned material after addition is added to the drum granulator, and the phosphoric acid slurry with a neutralization degree of 1.3 from the pre-neutralization tank is used for ammonification granulation, and the material from the granulator is dried. Cool and send to the packaging unit to obtain about 5.5% water-soluble humic acid, effective P 2 o 5 About 40.5%, N about 16% high-efficiency humic acid diammonium phosphate product.

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Abstract

The invention discloses a preparation process of efficient humic acid diammonium phosphate, which belongs to the field of novel fertilizers and in particular relates to a production process for preparing an efficient humic acid diammonium phosphate product through modifying diammonium phosphate in the traditional method. The preparation process comprises the following steps of: (1) utilizing 30-50wt% of humic acid ammonium containing water soluble humic acid as an activating agent, and adding the powder or paste humic acid ammonium to a returning charge according to 10-20wt% of adding amount in the returning charge part of the course of producing diammonium phosphate by adopting the traditional method; and (2) uniformly mixing the diammonium phosphate returning charge containing the added humic acid ammonium, then adding the diammonium phosphate returning charge into a cylinder for pelletizing, pelletizing and aminating the diammonium phosphate returning charge together with pre-neutralizing slurry, and drying. The preparation process of the efficient humic acid diammonium phosphate has the advantages that because the humic acid ammonium containing high water soluble humic acid is added in the returning charge part in the production process of the diammonium phosphate by utilizing the traditional method, the physiological activity of the humic acid is not destroyed, the traditional production process of the diammonium phosphate is not affected, the production cost of the diammonium phosphate can be effectively reduced, and the obtained efficient humic acid diammonium phosphate has excellent agricultural effect and ecological effect.

Description

technical field [0001] The invention belongs to the field of novel fertilizers, and in particular relates to a production process for preparing high-efficiency humic acid diammonium phosphate by modifying the traditional method of diammonium phosphate. Background technique [0002] The research and application of humic acid as a cheap, effective and non-polluting phosphate fertilizer synergist has a history of more than 40 years, and many research results have been obtained so far. Humic acid has six synergistic effects on phosphate fertilizers: Inhibits the fixation of water-soluble phosphorus. Acidic soil contains a lot of active iron, aluminum, and calcareous soil contains a lot of calcium. These ions will make the effective phosphorus fixation invalid. Since humic acid has a strong affinity for iron, aluminum, and calcium, add humic acid to the quick-acting phosphate fertilizer After acidification, the fixation of phosphorus in the soil can be significantly inhibited....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05B7/00
Inventor 张宗凡董芸曾波李冬丽胡义钰陈石
Owner YUNNAN CHEM RES INST
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