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Preparation method of granular high-nitrogen nitro-compound fertilizer with high storage stability

A storage stability, nitro high nitrogen technology, applied in the field of chemical fertilizer preparation

Active Publication Date: 2018-06-29
中国-阿拉伯化肥有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The focus of the fertilizer industry on ammonium nitrate phosphorus (ANP) is usually nutrient content, nitrate nitrogen content, antiknock performance, thermal stability, high temperature safety, and reports on the physical properties and structure analysis of ammonium nitrate phosphorus (ANP) still less

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] A preparation method of 18-9-18SOP compound fertilizer with high storage stability, the steps are as follows:

[0068] (1) Co-solution treatment of potassium nitrate and ammonium nitrate phosphorus

[0069] In the fertilizer formula, 31.27% of the total weight of the fertilizer is ammonium nitrate and 9.56% potassium nitrate. Among them, 5% of potassium nitrate and 31.27% of ammonium nitrate form a co-solution with a water content of about 15% by weight, at a constant temperature of 120°C. Stir for half an hour, dry, cool and crush the material to below 40 mesh to form powdery modified nitrate nitrogen;

[0070] (2) Preparation of solid materials

[0071] The powdery modified nitrate nitrogen in step (1), potassium nitrate accounting for 4.56% of the total mass of fertilizer, monoammonium phosphate accounting for 2.92% of the total mass of fertilizer, potassium sulfate accounting for 25.41% of the total mass of fertilizer, accounting for the total mass of fertilizer 2.8% super...

Embodiment 2

[0077] A preparation method of 18-9-18SOP compound fertilizer with high storage stability, the steps are as follows:

[0078] (1) Co-solution treatment of potassium nitrate and ammonium nitrate phosphorus

[0079] In the fertilizer formula, 22.16% of the total weight of the fertilizer is ammonium nitrate, 19.12% potassium nitrate, and 6.5% of potassium nitrate and 22.16% by weight of ammonium nitrate form a co-solution with a water content of about 15% by weight at 90°C Stir at constant temperature for half an hour, dry, cool and pulverize the material to below 40 mesh to form powdery modified nitrate nitrogen;

[0080] (2) Preparation of solid materials

[0081] The powdery modified nitrate nitrogen in step (1), potassium nitrate accounting for 12.62% of the total mass of fertilizer, monoammonium phosphate accounting for 3.7% of the total mass of fertilizer, potassium sulfate accounting for 17.06% of the total mass of fertilizer, and accounting for the total mass of fertilizer 2.8% ...

Embodiment 3

[0087] A preparation method of 18-9-18SOP compound fertilizer with high storage stability, the steps are as follows:

[0088] (1) Co-solution treatment of potassium nitrate and ammonium nitrate phosphorus

[0089] In the fertilizer formula, 13.1% of the total weight of the fertilizer is ammonium nitrate, and 28.67% of the total weight of the fertilizer is potassium nitrate. 4% of the potassium nitrate and 13.1% of the ammonium nitrate are combined to form a co-solution with a water content of about 15% by weight , Stir at a constant temperature of 135°C for half an hour, dry, cool and pulverize the material to below 40 mesh to form powdery modified nitrate nitrogen;

[0090] (2) Preparation of solid materials

[0091] The powdered modified nitrate nitrogen in step (1), potassium nitrate accounting for 24.67% of the total weight of fertilizer, 4.5% monoammonium phosphate, 8.72% potassium sulfate, 2.8% superphosphate, 15.2% ammonium sulfate, After mixing, it is conveyed by belt to the ...

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Abstract

The invention discloses a preparation method of a granular high-nitrogen nitro-compound fertilizer with high storage stability and belongs to the technical field of preparation of chemical fertilizers. The method comprises the following steps: (1) co-dissolving potassium nitrate and ammonium phosphate nitrate; (2) preparing a solid material; (3) preparing a granular material; and (4) preparing thegranular high-nitrogen nitro-compound fertilizer with high storage stability: through the processes of drying, screening, cooling and wrapping the granular material obtained in the step (3) to obtainthe granular high-nitrogen nitro-compound fertilizer with high storage stability. Through the preparation method of the granular high-nitrogen nitro-compound fertilizer with high storage stability, the formula and the process are optimized so as to improve the storage stability of the granular nitro-compound fertilizer; the effect is obvious; the method is easy to implement.

Description

Technical field [0001] The invention relates to a preparation method of a nitro high-nitrogen compound fertilizer, in particular to a preparation method of a granular nitro high-nitrogen compound fertilizer with high storage stability, and belongs to the technical field of chemical fertilizer preparation. Background technique [0002] The nitrogen source provided by compound fertilizers for crops mainly includes ammonium nitrogen, amide nitrogen and nitrate nitrogen. Nitrate nitrogen is a kind of quick-acting nitrogen source required by plants, and it is necessary to add quick-acting compound fertilizer and water-soluble fertilizer. Nitrogen consists of nitrate (NO 3 -1 ) And ammonium (NH 4 +1 ) Is called nitro compound fertilizer. Tobacco, fruit trees, most vegetables and other economic crops like nitrate nitrogen, especially for some crops sensitive to nitrate nitrogen, the ratio of nitrate nitrogen and ammonium nitrogen in the fertilizer will affect To crop yield. [0003] Nitr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00C05G5/00
CPCC05B11/06C05G5/12C05C5/02
Inventor 吴舒王金铭杨振军梁红江洪伟茹铁军王金刚贲艳英肖占梅何栋任宇红
Owner 中国-阿拉伯化肥有限公司
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