Compound fertilizer and production process thereof

A production process and technology of compound fertilizer, applied in the direction of urea compound fertilizer, nitrogen fertilizer, potash fertilizer, etc., can solve the problem of easy deliquescence of calcium phosphate and calcium magnesium phosphorus compound fertilizer, improve the production process method, facilitate long-term storage, The effect of simple production process

Pending Publication Date: 2018-11-30
郴州市春力科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For above-mentioned situation, the object of the present invention is to provide a kind of compound fertilizer and production method thereof, it adopts the technology of mixing superphosphate and calcium magnesium phosphorus so as to overcome the defect that prior art compound fertilizer is easy to deliquescence, can prolong the hydrolysis of urea time, can improve the fertilizer efficiency, and the production process is simple, the production cost is low, the market prospect is broad, and it is easy to promote and use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: Weigh 32 parts of raw material urea, 40 parts of superphosphate, 28 parts of calcium magnesium phosphorus, 18 parts of potassium sulfate, and 3 parts of potassium chloride, and grind and pulverize the weighed raw materials, and then weigh the pulverized The raw materials are conveyed into the mixer for mixing and stirring, and after being evenly stirred, they are conveyed into the double-roll extrusion granulator to extrude and granulate the raw materials, and then screened and separated according to the size of the outer diameter of the particles, and the unqualified particles are separated out and re-crushed for granulation. granules, and the qualified products are put into bags and stored for storage to make compound fertilizers; after several years of field crop application using this product, the fertilizer effect is excellent, and the product has good physical properties, better moisture resistance than ordinary compound fertilizers, suitable for long-...

Embodiment 2

[0028] Embodiment 2: Weigh 20 parts of raw material urea, 25 parts of superphosphate, 10 parts of calcium magnesium phosphorus, 5 parts of potassium sulfate, and 0.5 part of potassium chloride, and grind and pulverize the weighed raw materials, and then weigh the pulverized The raw materials are conveyed into the mixer for mixing and stirring, and after being evenly stirred, they are conveyed into the double-roll extrusion granulator to extrude and granulate the raw materials, and then screened and separated according to the size of the outer diameter of the particles, and the unqualified particles are separated out and re-crushed for granulation. granules, and the qualified products are put into bags and stored for storage to make compound fertilizers; after several years of field crop application using this product, the fertilizer effect is excellent, and the product has good physical properties, better moisture resistance than ordinary compound fertilizers, suitable for long-...

Embodiment 3

[0029] Embodiment three: Weigh 45 parts of raw material urea, 55 parts of superphosphate, 45 parts of calcium magnesium phosphorus, 30 parts of potassium sulfate, 5 parts of potassium chloride, and grind and pulverize the weighed raw material, then weigh the pulverized The raw materials are conveyed into the mixer for mixing and stirring, and after being evenly stirred, they are conveyed into the double-roll extrusion granulator to extrude and granulate the raw materials, and then screened and separated according to the size of the outer diameter of the particles, and the unqualified particles are separated out and re-crushed for granulation. granules, and the qualified products are put into bags and stored for storage to make compound fertilizers; after several years of field crop application using this product, the fertilizer effect is excellent, and the product has good physical properties, better moisture resistance than ordinary compound fertilizers, suitable for long-term ...

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PUM

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Abstract

The invention provides a compound fertilizer and a production process thereof. The compound fertilizer comprises the following raw materials by weight: 20-45 parts of urea, 25-55 parts of calcium superphosphate, 10-45 parts of calcium magnesium phosphate, 5-30 parts of potassium sulfate and 0.5-5 parts of potassium chloride. The production process includes: 1) weighing crushing, i.e. weighing theraw materials urea, calcium superphosphate, calcium magnesium phosphate, potassium sulfate and potassium chloride according to the weight parts and conducting grinding and crushing; 2) mixing, i.e. mixing the weighed and crushed raw materials; 3) raw material granulation, i.e. sending the evenly stirred raw materials into a granulator for granulation; 4) particle grading, i.e. screening and separating the particles according to the outer diameter size, separating the unqualified particles and performing crushing and granulation again; and 5) finished product packaging. The invention adopts thetechnology of mixing calcium superphosphate with calcium magnesium phosphate to overcome the defect that compound fertilizers deliquesce easily in the prior art, the hydrolysis time urea can be prolonged, the fertilizer efficiency can be improved, also the production technology has simple process, is low in making cost and has high production efficiency, thus being widely suitable for supportingcompound fertilizer production.

Description

technical field [0001] The invention relates to a fertilizer and a production process thereof, in particular to a compound fertilizer and a production process thereof. Background technique [0002] Compound fertilizer is a general term for compound fertilizers and mixed fertilizers. It contains two or more of the three nutrients nitrogen, phosphorus, and potassium. It is made through chemical combination (chemical) action or mixed ammoniation granulation process. The production of compound fertilizers can be used to materialize fertilization technology, improve fertilizer efficiency, reduce the frequency of fertilization, and save the cost of fertilization. Therefore, the production and application of compound fertilizers has attracted widespread attention from all over the world; at the same time, compound fertilizers are also the development direction of the world's chemical fertilizer industry. The world's consumption of compound fertilizers has exceeded 1 / 3 of the total ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
CPCC05B1/02C05B3/00C05B13/02C05C9/00C05D1/02
Inventor 李河冰
Owner 郴州市春力科技开发有限公司
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