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Granular nitrogen fertilizer taking ammonium bicarbonate as main nitrogen source and preparation method thereof

A technology of ammonium bicarbonate and granules, applied in the field of preparation of the granular nitrogen fertilizer, can solve the problems of irritating ammonia smell, difficult to use, unwilling to use ammonium bicarbonate, etc., and achieve the effect of improving the granulation rate

Active Publication Date: 2015-04-15
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because ammonium bicarbonate has the characteristics of being easy to decompose, the irritating ammonia smell during use is large and the form is powdery, so people are difficult to use and are unwilling to use ammonium bicarbonate

Method used

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  • Granular nitrogen fertilizer taking ammonium bicarbonate as main nitrogen source and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0068] Embodiment 1: the preparation method of the granular nitrogen fertilizer taking ammonium bicarbonate as the main nitrogen source of the present invention

[0069] The implementation steps of the preparation method are as follows:

[0070] A. Preparation of binder

[0071] Mix potassium dihydrogen phosphate with a particle size of 20 mesh, magnesium sulfate, attapulgite powder, sodium methyl silicate (potassium), talc powder and silica gel powder in a weight ratio of 1:0.5:0.2:0.05:0.01:0.01.

[0072] Preparation of B Granular Nitrogen Fertilizer

[0073] Put 75 parts by weight of ammonium bicarbonate, 3 parts by weight of powdered urea and 22 parts by weight of binder into a mixer sold by Zhengzhou Tianci Heavy Industry Machinery Co., Ltd. under the trade name disc mixer, fully stir and mix evenly, and then mix the mixed The raw materials are put into the extrusion granulator sold by Zhengzhou Yicheng Machinery Manufacturing Co., Ltd. under the trade name DZJ type rol...

Embodiment 2

[0075] Embodiment 2: the present invention has ammonium bicarbonate as the preparation method of the granular nitrogen fertilizer of main nitrogen source

[0076] The implementation steps of this embodiment are as follows:

[0077] A. Preparation of binder

[0078] Mix monoammonium phosphate with a particle size of 40 mesh, magnesium hydroxide, attapulgite powder, sodium methyl silicate, talc powder and silica gel powder in a weight ratio of 1:1:1:0.2:0.1:0.05.

[0079] Preparation of B Granular Nitrogen Fertilizer

[0080] Put 75 parts by weight of ammonium bicarbonate, 22 parts by weight of powdered urea and 3 parts by weight of binder into a mixer sold by Zhengzhou Yicheng Machinery Manufacturing Co., Ltd. under the trade name PJ type vertical mixer, fully stir and mix evenly , and then put the mixed raw materials into the extrusion granulator sold by Wenling Zeguo Chemical Machinery Co., Ltd. under the trade name DZG extrusion granulator. After extrusion and Wuxi Shuangl...

Embodiment 3

[0082] Embodiment 3: the production method of the granular nitrogen fertilizer taking ammonium bicarbonate as the main nitrogen source of the present invention

[0083] The implementation steps of this embodiment are as follows:

[0084] A. Preparation of binder

[0085] Sodium dihydrogen phosphate with a particle size of 60 mesh, magnesium chloride, attapulgite powder, potassium methyl silicate, talc powder and silica gel powder are mixed evenly in a weight ratio of 1:0.6:0.3:0.1:0.05:0.02.

[0086] B. Preparation of granular nitrogen fertilizer

[0087] Put 92 parts by weight of ammonium bicarbonate, 3 parts by weight of powdered urea and 5 parts by weight of binder into a mixer sold by Zhengzhou Tianyu Machinery Co., Ltd. under the trade name PJ type disc mixer, fully stir and mix evenly, and then mix the mixed The raw materials are put into the extrusion granulator sold by Zhengzhou Ruiheng Machinery Manufacturing Co., Ltd. under the trade name of FDZJ double-roller extr...

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Abstract

The invention relates to a granular nitrogen fertilizer taking ammonium bicarbonate as a main nitrogen source. The granular nitrogen fertilizer is characterized by being prepared from the following ingredients in parts by weight: 75-92 parts of ammonium bicarbonate, 3-22 parts of urea and 3-22 parts of binder, wherein the binder is prepared from phosphate, a magnesium compound, attapulgite powder, methyl silicate, talcum powder and silica gel powder which are in the weight ratio of 1: (0.5-1): (0.2-1): (0.05-0.2): (0.01-0.1): (0.01-0.05); the granularity of the granular nitrogen fertilizer taking ammonium bicarbonate as the main nitrogen source is 2-5mm. The invention further relates to a preparation method of the granular nitrogen fertilizer taking ammonium bicarbonate as the main nitrogen source. The granular nitrogen fertilizer disclosed by the invention has the characteristics of high fertilizer effect taking speed, little pungent ammonia odor, graininess, convenience in use and the like, and simultaneously has the characteristics of low production equipment requirements, wide source of raw materials, simple production process, high productivity, low cost, environmental friendliness and the like.

Description

【Technical field】 [0001] The invention belongs to the technical field of fertilizer preparation. More specifically, the present invention relates to a granular nitrogen fertilizer with ammonium bicarbonate as the main nitrogen source, and also relates to a preparation method of the granular nitrogen fertilizer. 【Background technique】 [0002] For a long time, low fertilizer use efficiency and its environmental risks have been the focus of people's attention, and the negative impact of chemical fertilizer application on the environment is becoming more and more serious. Countries all over the world have gradually realized that the development of new slow-release fertilizers with high utilization rate is one of the most effective ways to improve nutrient use efficiency. Since the 1960s, the research and development of various new fertilizers aimed at improving the utilization rate of fertilizers has become a research hotspot in the field of fertilizers in the world. Througho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
Inventor 袁亮赵秉强李燕婷林治安温延臣李伟王薇杨相东李娟
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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