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Preparation method of anti-caking high-tower full-water-soluble nitro-compound fertilizer

An anti-caking, water-soluble nitrate technology, applied in ammonium nitrate fertilizer, nitrate fertilizer, nitrogen fertilizer and other directions, can solve the problems of hardening, high tower full water-soluble nitro compound fertilizer is prone to pulverization and other problems, and achieve the effect of not hardening

Pending Publication Date: 2022-01-21
HUBEI NEWYANGFENG FERTILIZER STOCK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because ammonium nitrate has characteristics such as polycrystallinity and hygroscopicity, the high-tower fully water-soluble nitro compound fertilizer produced by existing methods is prone to problems such as pulverization and hardening.

Method used

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  • Preparation method of anti-caking high-tower full-water-soluble nitro-compound fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) 45% of the 98.5% ammonium nitrate melt from the ammonium nitrate production unit is metered and transported to the melting tank of the high tower granulation device, and overflows to the primary mixing tank after melting with the system return material. The temperature of the melting tank is 155-170 ℃;

[0029] (2) Add 22% industrial grade monoammonium phosphate and 10% Mannheim method potassium sulfate to the primary mixing tank, and overflow to the secondary mixing tank after fully mixing. The temperature of the primary mixing tank is 150-168°C;

[0030] (3) Add 9.5% Mannheim potassium sulfate, 5% ammonium nitrate phase stabilizer A, 7% pH regulator a, 1.2% EDTA chelated compound trace elements, and 0.3% seaweed powder into the secondary mixing tank for Fully mix, the temperature of the secondary mixing tank is 150-168°C; the mixed slurry enters the emulsifier for emulsification, and after emulsification, enters the granulator for granulation to obtain nitro compo...

Embodiment 2

[0035] (1) 44% of the 98.5% ammonium nitrate melt from the ammonium nitrate production unit is metered and transported to the melting tank of the high tower granulation device, and overflows to the primary mixing tank after melting with the system return material. The temperature of the melting tank is 155-170 ℃;

[0036] (2) Add 18% industrial grade monoammonium phosphate and 14.5% Mannheim method potassium sulfate to the primary mixing tank, and overflow to the secondary mixing tank after fully mixing. The temperature of the primary mixing tank is 150-168°C;

[0037] (3) Add 10% Mannheim method potassium sulfate, 5% ammonium nitrate phase stabilizer water-soluble B, 7% pH regulator b, 1.2% EDTA chelated compound trace elements, and 0.3% seaweed powder to the secondary mixing The tank is fully mixed, and the temperature of the secondary mixing tank is 150-168°C; the mixed slurry enters the emulsifier for emulsification, and after emulsification, it enters the granulator for g...

Embodiment 3

[0042] (1) 43% of the 98.5% ammonium nitrate melt from the ammonium nitrate production unit is metered and transported to the melting tank of the high tower granulation device, and overflows to the primary mixing tank after melting with the system return material. The temperature of the melting tank is 155-170 ℃;

[0043] (2) Add 12% industrial grade monoammonium phosphate, 8.5% potassium dihydrogen phosphate, and 13% Mannheim method potassium sulfate to the primary mixing tank, and overflow to the secondary mixing tank after fully mixing. The temperature of the primary mixing tank 150~168℃;

[0044](3) 13% Mannheim method potassium sulfate, 6% ammonium nitrate phase stabilizer, including 5% ammonium nitrate phase stabilizer C and 1% ammonium nitrate phase stabilizer D, 3% pH regulator c, 1.2% EDTA Chelate composite trace elements and 0.3% seaweed powder are added to the secondary mixing tank for full mixing, the temperature of the secondary mixing tank is 150-168°C; the mixe...

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Abstract

The invention relates to a preparation method of an anti-caking high-tower full-water-soluble nitro-compound fertilizer, which comprises the steps of S1, metering an ammonium nitrate melt, conveying the metered ammonium nitrate melt to a melting tank of a high-tower granulation device, melting the ammonium nitrate melt with a system return material of the high-tower granulation device, and overflowing to a first-stage mixing tank; S2, adding monoammonium phosphate, monopotassium phosphate and Mannheim-process potassium sulfate raw materials into the first-stage mixing tank, fully mixing, and overflowing to a second-stage mixing tank; S3, adding a metered ammonium nitrate phase stabilizer, a pH regulator, a chelated trace element and a fertilizer synergist into the second-stage mixing tank, and fully mixing; S4, emulsifying and granulating to obtain nitro-compound fertilizer particles; S5, screening, cooling, coating a water-soluble anti-caking agent, and then feeding into a bulk warehouse for stockpiling; and S6, re-screening and packaging the randomly stacked nitro-compound fertilizer to obtain the anti-caking high-tower full-water-soluble nitro-compound fertilizer. The high-tower full-water-soluble nitro-compound fertilizer produced by the method is not easy to cake and can be stored for a long time.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a method for preparing an anti-caking high-tower full water-soluble nitro compound fertilizer. Background technique [0002] The existing high-tower full water-soluble nitro compound fertilizer production method is generally to use ammonium nitrate melt or ammonium nitrate phosphorus as a liquid phase after melting in a melting tank, and mix it with a certain proportion of industrial-grade monoammonium phosphate and diammonium phosphate in a mixing tank. Fully water-soluble raw materials such as hydrogen potassium and Mannheim potassium sulfate are fully mixed, and then sprayed and granulated in the granulation tower. After spraying and granulating, the compound fertilizer particles are screened, cooled, coated, and packaged to obtain fully water-soluble Nitro compound fertilizer. However, because ammonium nitrate has characteristics such as polycrystallinity and hygroscopic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/30C05G3/90C05G5/12C05G5/30
CPCC05G3/30C05G3/90C05G5/12C05G5/30C05B7/00C05C1/00C05C3/00C05C5/02C05C11/00C05D1/00C05D1/02C05D9/00C05D9/02C05F11/00Y02P60/21
Inventor 何光伟叶坤国
Owner HUBEI NEWYANGFENG FERTILIZER STOCK