Production process of multiple-effect carbon nitrogen fertilizer

A technology of nitrogen fertilizer and charcoal, applied in the direction of nitrogen fertilizer, fertilizer form, ammonium salt fertilizer, etc., can solve the problems of high cost and limited large-scale application, and achieve the effect of low cost, low equipment requirements and simple process

Inactive Publication Date: 2009-07-15
国家林业局竹子研究开发中心 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past few decades, although there have been controlled-release fertilizers with good controlled-release effects at home and abroad, their large-scale application in agricultural production is still very limited. The main reason is that their cost is too high

Method used

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  • Production process of multiple-effect carbon nitrogen fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Take one kilogram of granular urea, place it in the coating pan of the coating machine, and adjust the rotation to about 400 rpm. 200 milliliters of 4% sodium carboxymethyl cellulose and ammonium humate mixed solution (each 50% of the ratio) are placed in the feed tank of the coating machine, and the spray gun is opened to spray the binder solution. Put hot air at 60-70℃ for about 3 minutes, then add a certain amount of charcoal into the rotating coating pan, continue to run for 2-3 minutes, then spray a certain amount of binder colloid solution, and then add charcoal, and so on 2-3 times; then transport the wrapped charcoal fertilizer to the composite vibrating dryer for drying, the temperature of the air inlet of the dryer is 70-90°C, the temperature of the material outlet is 40-60°C, after sieving, wait for more Effective carbon and nitrogen fertilizer granules.

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PUM

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Abstract

The invention discloses a production method of multieffect charcoal nitrogen fertilizer. The charcoal nitrogen fertilizer is made by bonding inner granular nitrogen fertilizer (urea or ammonium bicarbonate accounting for 50-80% of total weight) and outer charcoal (charcoal including bamboo charcoal, charcoal, straw and the like fired waste and accounting for 15-40% of the total weight) with a macromolecular organic binder. The fertilizer changes the release environment of nitrogenous chemical fertilizers in soil and improves slow release performance and availability of the nitrogen fertilizer by unique physical and chemical properties of the charcoal, and the charcoal can be preserved in the soil for a longer time, and has important effects on a plurality of aspects such as improving physical structure and microbial activity of the soil, the adsorption and decomposition capacity of the soil to contaminant, carbon sink and the like. The fertilizer has simple production process and low cost and is an environmental-friendly slow release fertilizer.

Description

technical field [0001] The invention belongs to a fertilizer manufacturing method, in particular to a high-efficiency, sustained multifunctional slow-release fertilizer. Background technique [0002] The production and consumption of chemical fertilizers in my country rank first in the world. With the further growth of population and the reduction of land resources, the use of chemical fertilizers will continue to increase. However, compared with developed countries, the utilization rate of chemical fertilizers in my country is relatively low, such as The seasonal utilization rate of nitrogen in farmland is only 30% to 35%. A large amount of nitrogen loss will lead to non-point source pollution, resulting in huge energy loss and serious environmental damage. Therefore, how to control the loss of nitrogen in farmland is the key to realizing agricultural Important content of cleaner production and sustainable development. The research on controlled / slow-release fertilizers has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/08C05G5/00C05C9/00C05C3/00C05G3/90
CPCY02P60/21Y02A40/22
Inventor 钟哲科张建锋费朗根·罗伯特李伟成
Owner 国家林业局竹子研究开发中心
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