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Attapulgite modified urea-ammonium nitrogen fertilizer

A technology of attapulgite and ammonium urea nitrogen fertilizer, which is applied in the direction of nitrogen fertilizer, ammonium salt fertilizer, fertilization device, etc., which can solve the problems of uneven mixing, inability to realize continuous production, and large stacking site, and achieve wide application range and high particle color. Effects of whitening and slow release of fertilizer effect

Inactive Publication Date: 2019-02-12
白银丰宝农化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a large stacking space, and it needs to be stirred continuously, and the mixing is not uniform, so continuous production cannot be realized.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1, an attapulgite modified urea ammonium nitrogen fertilizer, specifically sulfur-based nitrogen fertilizer, prepared by mixing the following components by weight percentage: attapulgite powder 20%, urea 25%, ammonium sulfate 50%, urea sulfate 5% %;

[0022] Its preparation method comprises the following steps:

[0023] a. Preparation of attapulgite fine powder: Hand-select attapulgite clay minerals→drying→crushing→grinding→grading to make fine powder of 100 mesh to 150 mesh, with a water content of ≤15%, and the color is off-white or red;

[0024] b. Prepare urea sulfate solution: mix and stir 93% sulfuric acid, urea, and water in a mass ratio of 1:2:0.1, and control the temperature at 40-60°C;

[0025] c. Granulation: Add attapulgite powder, urea, and ammonium sulfate to the granulator in proportion, then atomize and spray the urea sulfate solution onto the surface of the material bed of the granulator, and use a flow meter to control the flow;

[0026] d. A...

Embodiment 2

[0036] Example 2, an attapulgite modified urea ammonium nitrogen fertilizer, specifically chlorine-based nitrogen fertilizer, prepared by mixing the following components by weight percentage: 15%, urea 20%, ammonium chloride 60%, urea sulfate 5%;

[0037] a. Preparation of attapulgite fine powder: Hand-select attapulgite clay minerals→drying→crushing→grinding→grading to make fine powder of 100 mesh to 150 mesh, with a water content of ≤15%, and the color is off-white or red;

[0038] b. Prepare urea sulfate solution: mix and stir 93% sulfuric acid, urea, and water in a mass ratio of 1:2:0.1, and control the temperature at 40-60°C;

[0039] c. Granulation: Add attapulgite powder, urea, and ammonium chloride to the granulator in proportion, then atomize and spray the urea sulfate solution onto the surface of the material bed of the granulator, and use a flow meter to control the flow;

[0040] d. After drying, cooling, sieving, coating and measuring, the prepared granules are pa...

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PUM

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Abstract

The invention relates to attapulgite modified urea-ammonium nitrogen fertilizer which is characterized by comprising sulfur-based nitrogen fertilizer and chlorine-based nitrogen fertilizer, wherein the sulfur-based nitrogen fertilizer is prepared by mixing the following components in percentage by weight: 10-20% of attapulgite powder, 25-35% of urea, 50-60% of ammonium sulfate and 5-8% of urea sulfate; the chlorine-based nitrogen fertilizer is prepared by mixing the following components in percentage by weight: 10-20% of attapulgite powder, 20-30% of urea, 55-65% of ammonium chloride and 5-8%of urea sulfate. The attapulgite modified urea-ammonium nitrogen fertilizer provided by the invention has a good soil improving effect; meanwhile, by utilizing the colloidality and the adsorbability of attapulgite, the fertilizer is easy to pelletize and has good commodity; by utilizing the inhibitive ability of the urea sulfate, fertilizer efficiency is slowly released and thus is prolonged. Theattapulgite modified urea-ammonium nitrogen fertilizer has a wide application range and is applicable to multiple economic crops and grain crops.

Description

technical field [0001] The invention relates to the technical field of fertilizer production, in particular to attapulgite modified urea ammonium nitrogen fertilizer. Background technique [0002] Urea ammonium nitrogen fertilizer is a new type of fertilizer, but it is not a "new chemical fertilizer". The synergistic effect of different forms of nitrogen has been studied for decades. Ammonium urea nitrogen fertilizer is the first commercial nitrogen fertilizer in my country to use different forms of nitrogen to industrialize the synergistic effect. Urea ammonium nitrogen fertilizer refers to a solid single fertilizer containing urea nitrogen and ammonium nitrogen elements. Ammonium urea nitrogen fertilizer can reduce the volatilization loss of ammonia. After urea is put into the soil, it is converted into ammonium nitrogen under the action of urease. In neutral or alkaline soils, ammonium nitrogen decomposes to release volatile ammonia gas. Ammonium sulfate and ammonium ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
CPCC05C3/00C05G5/30C05C9/00C05D9/00
Inventor 魏玉祥王晨晖
Owner 白银丰宝农化科技有限公司
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