A kind of production method of environment-friendly slow-release fertilizer

A slow-release fertilizer and production method technology, applied in fertilizer forms, fertilizer mixtures, fertilization devices, etc., can solve the problems of humic acid retention, single use of humic acid, and no chelation reaction between humic acid and urine to stabilize nitrogen, etc. , to achieve the effect of stimulating crop growth, improving nitrogen use efficiency, and increasing yield.

Inactive Publication Date: 2011-12-21
河南财鑫实业化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the application of humic acid in China is becoming more and more extensive. The functions of humic acid and polyaspartic acid have been recognized. Stay tightly in the granulation method of mixing granulation, which does not play the role of humic acid and urine chelation reaction to stabilize nitrogen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A production method of an environment-friendly slow-release fertilizer, calculated according to 1 ton of ingredients, using 0.47 tons of urea, 0.13 tons of monoammonium phosphate, 0.1 tons of potassium chloride, and 0.2 tons of ammonium chloride, and adding 0.12 tons of humic acid to molten urine Acid (0.1 ton of dry matter), 3 kilograms of polyaspartic acid are mixed to make mixed slurry. The mixed slurry is sent to the granulator, atomized and sprayed to the material bed of the granulator by a special nozzle for granulation, and the material coming out of the granulator is dried, cooled, screened, and anti-caking to obtain qualified products. The final fine powder and large particles are returned to the granulator as return material. This product is a granular slow-release fertilizer compound fertilizer, which contains 28% of total nitrogen, P 2 o 5 6%, K 2 O6%, about 5% active humic acid, 1.58% moisture, 16.8N particle strength.

Embodiment 2

[0028] A kind of production method of the environment-friendly slow-release fertilizer product of high-tower granulation, calculate according to 1 ton of ingredients, use 0.65 tons of urea, 0.09 tons of potassium chloride, 0.18 tons of active humic acid (0.15 tons of dry matter), calcium carbonate 0.11 tons of powder, add 3 kilograms of polyaspartic acid in the molten urine, mix in the top mixing tank to make slurry. The used humic acid enters the mixing tank after being pulverized, ammoniated and activated, and dried by a heater. The mixed slurry enters the granulation tower through the nozzle of the granulator for granulation, and the material is cooled, screened, and anti-caking treated to obtain qualified products, and the fine powder and large particles after screening are returned to the mixing tank as return materials. This product is granular humic acid compound fertilizer, which contains 30% of total nitrogen, K 2 O5%, active humic acid about 8%, moisture 0.85%, part...

Embodiment 3

[0030] A kind of production method of environment-friendly slow-release fertilizer, calculate according to 1 ton of ingredients, use 0.45 tons of urea, 0.3 tons of ammonium chloride, 0.06 tons of zeolite powder, add 0.18 tons of humic acid (0.15 tons of dry matter) in molten urine ), 3 kilograms of polyaspartic acid are mixed to make mixed slurry. The mixed slurry is sent to the granulator, atomized and sprayed to the material bed of the granulator by a special nozzle for granulation, and the material coming out of the granulator is dried, cooled, screened, and anti-caking to obtain qualified products. The final fine powder and large particles are returned to the granulator as return material. The product is a granular slow-release fertilizer compound fertilizer, which contains 28% of total nitrogen, about 7.55% of active humic acid, 1.78% of water, and 15.2N of granular strength.

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Abstract

A production method of an environment-friendly slow-release fertilizer, comprising mixing slurry, granulating, drying, cooling, and screening, adding activated humic acid and polyaspartic acid into molten urine, and fully mixing , the obtained mixed slurry is used as the liquid phase of compound fertilizer granulation, and sent to the granulator for granulation. The slow-release fertilizer product produced by the present invention has a good effect. Active humic acid and polyaspartic acid are added to the molten urine, which improves the low nitrogen utilization rate and can play a nitrogen synergistic effect. The availability of phosphorus and potassium in the soil can stimulate crop growth, provide more comprehensive nutrition, and significantly increase production.

Description

technical field [0001] The invention relates to a production method of an environment-friendly slow-release fertilizer, in particular to a production method of the slow-release fertilizer by adding humic acid and polyaspartic acid in the compound fertilizer process. Background technique [0002] A large number of studies and tests have shown that adding humic acid to molten urine will cause a complex chelation reaction between humic acid and urea, changing their internal valence bond structure and forming a large number of stable complex substances, which can significantly improve the sustained release of urea performance, reduce nitrogen volatilization loss, promote nitrogen absorption, and improve nitrogen fertilizer use efficiency. The mixing of molten urine and humic acid is easy to realize in the process of compound fertilizer production. [0003] Research and application results at home and abroad have shown that polyaspartic acid, as a plant nutrient absorption accel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00C05G5/00
Inventor 李霄峰李现才田汉民郝天才
Owner 河南财鑫实业化工有限责任公司
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