Urea lose-control fertilizer, preparation method and production equipment thereof

A production device and loss-controlling fertilizer technology, applied in fertilization devices, urea compound fertilizer, nitrogen fertilizer, etc., can solve the problems of cumbersome operation and high preparation cost

Active Publication Date: 2011-11-23
安徽帝元生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the loss-controlling fertilizer prepared by the existing method is loose and easy to disperse. In order to ensure that it is not easy to lose, it is necessary to increase the oiling and coating process, the operation is more cumbersome, and the preparation cost is higher.

Method used

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  • Urea lose-control fertilizer, preparation method and production equipment thereof
  • Urea lose-control fertilizer, preparation method and production equipment thereof
  • Urea lose-control fertilizer, preparation method and production equipment thereof

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preparation example Construction

[0024] The embodiment of the present invention discloses a preparation method of urea for controlling loss of fertilizer, comprising the following steps:

[0025] a) introducing the urea slurry into the molten urea tank, heating and melting the urea tank and adding the loss control agent, stirring the urea slurry and the loss control agent evenly to obtain the loss control fertilizer urea slurry.

[0026] b) Send the urea slurry of the loss-controlling fertilizer into a granulation device for condensation and granulation to obtain urea loss-controlling fertilizer.

[0027] It can be seen from the above scheme that the present invention uses the urea slurry prepared by the urea production device in the urea production process as a raw material, imports the above-mentioned urea slurry into the molten urea tank to maintain a molten state, and adds a loss control agent to make the molten urea slurry and the control agent The loss-loss agent is mixed evenly to prepare the loss-cont...

Embodiment 1

[0042] 1. Send the urea slurry discharged from the second evaporator into the molten urea tank, and feed steam of 0.3Mpa to 0.4Mpa into the jacket of the molten urea tank to keep the temperature in the molten urea tank at 134°C to 136°C. A loss control agent is added into the molten urea tank, the weight ratio of the added loss control agent to the urea slurry is 5:100, and the stirring speed of the stirrer in the molten urea tank is set to 40 rpm to obtain a loss control fertilizer urea slurry.

[0043] 2. Send the loss-controlling fertilizer urea slurry in the molten urea tank to a rotary belt-type condensation granulator, and set the cooling water temperature to 35°C to obtain urea loss-controlling fertilizer.

Embodiment 2

[0045] The difference between this embodiment and embodiment 1 is that the weight ratio of the added loss control agent to urea slurry is 2:100, and the rest of the procedures are the same as in embodiment 1.

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Abstract

The invention provides production equipment of urea lose-control fertilizer. The equipment comprises a urea slurry synthesizer, a fusion urea pot and a granulation device. The inlet of the fusion urea pot is connected to the outlet of the urea slurry synthesizer. A stirrer is installed inside the fusion urea pot, the outlet of which is in connection with the granulation device. The invention alsoprovides a preparation method of the urea lose-control fertilizer and a urea lose-control fertilizer with a density of from 1.2g / cm<3>-1.4g / cm<3>. The urea lose-control fertilizer prepared with the method provided in the invention has compact structure and great particle density. With a compact surface, the urea lose-control fertilizer is invulnerable to moisture infiltration, and the loss of nutrients with moisture can be avoided. Therefore, the fertilizer utilization rate is improved. In addition, the urea lose-control fertilizer of the invention is not easy to be broken, so that the oil-coating process is no longer needed.

Description

technical field [0001] The invention relates to the field of chemical fertilizers, in particular to a urea loss-controlling fertilizer, a preparation method and a production device thereof. Background technique [0002] my country is a large agricultural country, how to improve the utilization rate of chemical fertilizers is one of the key issues to achieve high crop yields. Most of the nutrients that can be absorbed by plants in chemical fertilizers exist in the form of inorganic salts. These inorganic salts are easy to lose and volatilize. Because of this, only about 30% of traditional chemical fertilizers are absorbed by plants, and the rest is lost with water. The utilization rate of chemical fertilizers Low and easy to cause environmental pollution. [0003] In order to improve the utilization rate of chemical fertilizers, slow / controlled release fertilizers are widely used at first, but their prices are relatively expensive, and the control of fertilizer loss rate nee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05C9/00C05G3/08C05G3/90
Inventor 叶郭刚赵彧
Owner 安徽帝元生物科技有限公司
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