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Preparation method of compound fertilizer by means of extrusion carbonization approach

A compound fertilizer and legal technology, applied in the field of compound fertilizer, can solve the problems of large amount of waste, poor environmental protection in the production process, low pelleting rate, etc., and achieve the effect of large adsorption area, low risk and easy transportation

Inactive Publication Date: 2018-11-06
张居政
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for preparing compound fertilizer by extruding carbon, which solves the problems of low pelleting rate, high waste and poor environmental protection in the production process of the existing compound fertilizer.

Method used

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  • Preparation method of compound fertilizer by means of extrusion carbonization approach

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Embodiment 1

[0024] The present embodiment provides a kind of method that adopts extrusion carbon method to prepare compound fertilizer, comprises the following steps:

[0025] (1) In parts by weight, take 100 parts of urea, 20 parts of fulvic acid powder, and 12 parts of organic carbon powder for mixing, then melt in a stainless steel tank, stir, and the stirring intensity is 60 rpm, and add amino acid at the same time 10 parts of the solution, the melting temperature is 80-90°C, and the carbon mixture is obtained;

[0026] (2) In parts by weight, 420 parts of ammonium sulfate, 200 parts of potassium sulfate, and 230 parts of monoammonium phosphate are mixed with the carbon mixture. Secondary carbonization of the raw materials occurs, the extrusion temperature is 85°C, and then the extruded materials are sent to a screening and packaging system to obtain the product.

Embodiment 2

[0028] The present embodiment provides a kind of method that adopts extrusion carbon method to prepare compound fertilizer, comprises the following steps:

[0029] (1) In parts by weight, take 90 parts of urea, 25 parts of fulvic acid powder, and 10 parts of organic carbon powder for mixing, then melt in a stainless steel tank, stir, and the stirring intensity is 65 rpm, and add amino acid at the same time 8 parts of the solution, the melting temperature is 90°C, and the carbon mixture is obtained;

[0030] (2) In parts by weight, 400 parts of ammonium sulfate, 220 parts of potassium sulfate, and 200 parts of monoammonium phosphate are mixed with the carbon mixture. Secondary carbonization of the raw material occurs, the extrusion temperature is 90°C, and then the extruded material is sent to a screening and packaging system to obtain the product.

Embodiment 3

[0032] The present embodiment provides a kind of method that adopts extrusion carbon method to prepare compound fertilizer, comprises the following steps:

[0033] (1) In parts by weight, take 110 parts of urea, 15 parts of fulvic acid powder, and 15 parts of organic carbon powder for mixing, then melt in a stainless steel tank, stir, and the stirring intensity is 55 rpm, and add amino acid simultaneously 12 parts of the solution, the melting temperature is 80°C, and the carbon mixture is obtained;

[0034] (2) In parts by weight, 450 parts of ammonium sulfate, 180 parts of potassium sulfate, and 250 parts of monoammonium phosphate are mixed with the carbon mixture. Secondary carbonization of the raw material occurs, the extrusion temperature is 80°C, and then the extruded material is sent to a screening and packaging system to obtain the product.

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Abstract

The invention discloses a preparation method of compound fertilizer by means of an extrusion carbonization approach and belongs to the technical field of compound fertilizer. The method comprises thefollowing steps of mixing urea, fulvic acid powder and organic carbon powder, melting the mixture above in a stainless steel tank for melting, and adding an amino acid solution at the same time to obtain a carbonization agent, wherein the melting temperature is 80-90 DEG C; mixing ammonium sulfate, potassium sulfate, monoammonium phosphate and the carbonization agent, sending the mixed materials to an extruder, conducting secondary carbonization on the raw materials at extrusion temperature, and then sending the extruded materials to a screening packaging system to obtain the compound fertilizer. The compound fertilizer prepared by the preparation method is neutral and harmless to soil; the adsorption area is large, that is to say that not only is the loss of nitrogen and potassium prevented, but also phosphorus is prevented from deteriorating, and the efficiency and environmental protection performance are high; the water content is small, and agglomeration is not caused; the fertilizer is high in strength and easy to transport and store; there is little risk during production, and there are no hazardous chemicals; the compound fertilizer is resistant to diseases and drought and suitable for both field crops and economical crops.

Description

technical field [0001] The invention relates to the technical field of compound fertilizers, in particular to a method for preparing compound fertilizers by extruding carbon. Background technique [0002] The key application of new fertilizers in agriculture can promote the rapid and high-quality growth of crops and the efficient use of energy. Moreover, the use of new technologies will greatly save production costs and reduce energy consumption. [0003] The production method of existing compound fertilizer is: utilize extrusion granulator traditional extrusion granulation method, generally select the low-viscosity raw material such as ammonium sulfate or potassium chloride to carry out mixed extrusion granule together. The disadvantages of this method are that the types of fertilizers are relatively limited, the pelleting rate of the product is low, there are many waste materials, and the production process is poor in environmental protection. In addition, the compound fe...

Claims

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Application Information

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IPC IPC(8): C05G1/00
CPCC05B7/00C05C3/00C05C9/00C05C11/00C05D1/02C05F11/00
Inventor 张居政
Owner 张居政
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