Potassium nitrate compound fertilizer and preparation process thereof

A compound fertilizer and preparation process technology, applied in the directions of nitrate fertilizer, urea compound fertilizer, ammonium orthophosphate fertilizer, etc., can solve the problems of inability to meet market demand, low compound fertilizer yield, etc. The effect of increasing production

Inactive Publication Date: 2018-06-12
魏万辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the output of the compound fertilizer with this content is extremely low in the drum granulation process, which cannot meet the market demand

Method used

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  • Potassium nitrate compound fertilizer and preparation process thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The potassium nitrate compound fertilizer of the present invention comprises the following components in parts by weight: 35 parts of urea, 25 parts of monoammonium phosphate, 35 parts of potassium nitrate, 2.5 parts of ammonium bicarbonate, and 2.5 parts of calcium sulfate.

[0020] The potassium nitrate compound fertilizer preparation process comprises the steps:

[0021] (1) pulverizing: the urea that is 35 parts by weight, the monoammonium phosphate of 25 parts, the potassium nitrate of 35 parts, the ammonium bicarbonate of 2.5 parts and the calcium sulfate of 2.5 parts are pulverized through pulverizer;

[0022] (2) Stirring: the mixed pulverized material obtained in step (1) is sent into the stirring tank through the material conveyor belt for stirring, and the stirring time is 2 minutes, and the mixed material is stirred into the granulator after being evenly stirred;

[0023] (3) feed steam in the granulator in step (2), the water vapor pressure is about 9-12, t...

Embodiment 2

[0028] The potassium nitrate compound fertilizer of the present invention comprises the following components in parts by weight: 38 parts of urea, 23 parts of monoammonium phosphate, 34 parts of potassium nitrate, 2.4 parts of ammonium bicarbonate, and 2.6 parts of calcium sulfate.

[0029] The potassium nitrate compound fertilizer preparation process comprises the steps:

[0030] (1) pulverizing: the urea that is 38 parts by weight, the monoammonium phosphate of 23 parts, the potassium nitrate of 34 parts, the ammonium bicarbonate of 2.4 parts and the calcium sulfate of 2.6 parts are pulverized through pulverizer;

[0031] (2) Stirring: the mixed and pulverized material obtained in step (1) is sent into the millstone mixing tank through the material conveyor belt for stirring, and the stirring time is 3 minutes, and the mixed material is passed into the granulator after being evenly stirred;

[0032] (3) feed steam in the granulator in step (2), the water vapor pressure is ab...

Embodiment 3

[0037] The potassium nitrate compound fertilizer of the present invention comprises the following components in parts by weight: 40.5 parts of urea, 22.5 parts of monoammonium phosphate, 32.2 parts of potassium nitrate, 2.4 parts of ammonium bicarbonate, and 2.4 parts of calcium sulfate.

[0038] The potassium nitrate compound fertilizer preparation process comprises the steps:

[0039] (1) pulverizing: the urea that is 40.5 parts by weight, the monoammonium phosphate of 22.5 parts, the potassium nitrate of 32.2 parts, the ammonium bicarbonate of 2.4 parts and the calcium sulfate of 2.4 parts are pulverized through pulverizer;

[0040] (2) Stirring: the mixed pulverized material obtained in step (1) is sent into the millstone mixing tank through the material conveyor belt for stirring, and the stirring time is 4 minutes, and the mixed material is passed into the granulator after the mixed material is evenly stirred;

[0041] (3) feed steam in the granulator in step (2), the wa...

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Abstract

The invention discloses a potassium nitrate compound fertilizer and a preparation process thereof. The potassium nitrate compound fertilizer is prepared from various components in parts by weight: 35to 45 parts of urea, 20 to 25 parts of monoammonium phosphate, 30 to 35 parts of potassium nitrate, 2 to 3 parts of ammonium hydrogen carbonate, and 2 to 3 parts of calcium sulfate. The preparation process comprises the following steps: crushing: crushing the urea, the monoammonium phosphate, the potassium nitrate, the ammonium hydrogen carbonate and the calcium sulfate by virtue of a crushing machine according to the parts by weight; stirring: sending the obtained mixed crushed material into a stirring tank by virtue of a conveyor belt, stirring, and after uniformly stirring a mixed material,sending the material into a granulating machine; introducing steam into the granulating machine, improving the viscosity of the monoammonium phosphate in the material by virtue of the effect of the steam, and mixing and granulating; drying, screening and cooling the obtained particle mixture, and screening a finished product, thus obtaining finished product particles; and coating the outer layerof the obtained finished product particles with an anti-caking substance by virtue of a coating machine, and packaging. The potassium nitrate is used for substituting the traditional potassium sulfate, so that the molding period of the product can be shortened, and the yield of the compound fertilizer can be increased.

Description

technical field [0001] The invention relates to the technical field of compound fertilizer production, in particular to a potassium nitrate compound fertilizer and a preparation process thereof. Background technique [0002] The highest content of the existing three-element balanced ratio compound fertilizer with chloride ions less than 3% N-P 2 o 5 -K 2 O 26-10-15, the three-element balanced ratio compound fertilizer uses potassium sulfate (K 2 SO 4 ), potassium sulfate (K 2 SO 4 ) and potassium oxide (K 2 O) The conversion rate between The sulfide ion in the superior product of potassium sulfate is less than 1%. The content of potassium oxide in potassium sulfate is generally between 47% and 51%. Potassium sulfate is a colorless crystal. It has low hygroscopicity, is not easy to agglomerate, has good physical properties, and is easy to apply. It is a very good water-soluble potassium fertilizer. Potassium sulfate is also a chemically neutral, physiologically aci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05B7/00C05G3/20C05G5/30C05C3/00C05C5/02C05C9/00C05D3/00
Inventor 魏万辉
Owner 魏万辉
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