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Fertilizer composition and its preparation

A composition and fertilizer technology, applied in fertilizer mixture, fertilization device, application and other directions, can solve the problems of large lignin, consumption, etc., and achieve the effect of high product quality, mature technology, and insect pest control

Active Publication Date: 2005-03-02
SHANDONG TRALIN PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lignin, as a fertilizer and an additive to various fertilizers, can consume a large amount of lignin, solve the worries of environmental pollution, and provide compound fertilizers and long-term slow-release fertilizers for agricultural production; but there is currently no ideal way to use lignin Compound fertilizers as components

Method used

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  • Fertilizer composition and its preparation
  • Fertilizer composition and its preparation
  • Fertilizer composition and its preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Take the following components:

[0061] Lignin 3.06t

[0062] Urea 2.19t

[0063] Monoammonium phosphate 2.19t

[0064] Potassium sulfate 0.44t

[0065] Zinc acetate 0.87t

[0066] The lignin with a water content of 45-60% is crushed and sent to the dryer, and the temperature is raised to 180°C within half an hour, and then the lignin is linearly heated to 200°C within 30 minutes, and the temperature is raised after keeping for 40 minutes. The temperature of the lignin is raised linearly to 250° C. within 70 minutes, kept for 1.5 hours, the moisture content of the lignin is 8%, and the drying is finished. (heating curve see Figure 4 )

[0067] Urea, monoammonium phosphate and potassium sulfate enter the crusher for crushing; they are mixed with lignin after metering, stirred and transported to the granulator for granulation, and the finished product is dried, cooled and then sieved to obtain the final product.

[0068] Indicator name

Embodiment 2

[0070] Take the following components:

[0071] Lignin 6t

[0072] Urea 3.45t

[0073] Monoammonium phosphate 3.75t

[0074] Potassium sulfate 0.6t

[0075] Ferric chloride 1.2t

[0076] Crumble the lignin with a water content of 45-60%, send it to the dryer, control the temperature of the lignin to 180°C within half an hour, and then linearly increase the temperature of the lignin to 200°C within 30 minutes, and keep it for 30 After 10 minutes, continue to raise the temperature. After 80 minutes, the lignin temperature rises linearly to 250° C., and keeps for 4 hours. The water content of the lignin is 6%, and the drying ends. (heating curve see Figure 5 )

[0077] Urea, monoammonium phosphate, potassium sulfate and iron salt enter the crusher for crushing; they are mixed with lignin after metering, stirred and transported to the granulator for granulation, and the finished product is dried, cooled and then sieved to obtain the final product.

Embodiment 3

[0079] Take the following components:

[0080] Lignin 4.05t

[0081] Urea 1.8t

[0082] Monoammonium phosphate 1.8t

[0083] Potassium sulfate 0.45t

[0084] Manganese sulfate 0.9t

[0085] The lignin with a water content of 45-60% is crushed and sent to the dryer, and the temperature is raised to 180°C within half an hour, and then to 200°C within 30 minutes, and the temperature is raised after 36 minutes, and after 73 minutes, The temperature of lignin is raised linearly to 250°C and kept for 3.5 hours, the moisture content of lignin is 7%, and the drying is finished. (heating curve see Figure 6 )

[0086] Urea, monoammonium phosphate, potassium sulfate and manganese salt enter the crusher for crushing; they are mixed with lignin after metering, stirred and transported to the granulator for granulation, and the finished product is dried, cooled and then sieved to obtain the final product.

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Abstract

The present invention provides one kind of fertilizer composition and its production process, and is especially one kind of composite fertilizer with lignin recovered from paper pulp making process as the main fertilizer component and its production process. The lignin produced in papermaking is used as the main fertilizer component and compounded with other fertilizer components to produce synergistic effect. Lignin has the effects of loosening soil, controlling water and preserving soil moisture. During the production, the components are crushed, stoved, oxidized, mixed and pelletized to obtain the fertilizer. The present invention disposes papermaking waste properly and the fertilizer has also pest inhibiting effect.

Description

Technical field: [0001] The invention relates to a fertilizer composition and a preparation method thereof, in particular to a compound fertilizer using lignin recovered from pulping and papermaking as a fertilizer component and a preparation method thereof. Background technique: [0002] Environmental pollution is a serious social problem. Reducing the impact of industrial waste on the environment is currently mainly focused on preventing waste generation, waste utilization and waste recycling. [0003] For pulp and paper enterprises, lignin is the main organic pollutant of soda straw pulp black liquor, and the main cause of biochemical oxygen demand (BOD), chemical oxygen demand (COD) and chroma of wastewater, and the extraction of There is a large amount of lignin and it occupies a large area. Therefore, it is a good solution to do a good job in the comprehensive application of lignin. [0004] On the other hand, my country is a big agricultural country, and the amount o...

Claims

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Application Information

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IPC IPC(8): C05G1/00
Inventor 李洪法郭良进曹光春杨吉慧刘玉庆石敬东
Owner SHANDONG TRALIN PAPER
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