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Method for preparing wax special for controlled-release fertilizer envelope from refined Fischer-Tropsch wax, microcrystalline wax and paraffin

A technology of microcrystalline wax and controlled release fertilizer, applied in the application, fertilization device, fertilizer mixture and other directions, can solve the problems of high cost and easy adhesion, and achieve the effect of low cost, uniform dispersion and reduction of micropore size.

Inactive Publication Date: 2019-10-25
DALIAN LONSIN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention solves the problems of high cost and easy adhesion of the existing controlled-release fertilizer resin coating by preparing the special wa

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for preparing special wax for controlled-release fertilizer coating by refined Fischer-Tropsch wax, microcrystalline wax and paraffin, said method comprising the steps of:

[0021] ①Under the condition of 80-90°C, melt refined Fischer-Tropsch wax, microcrystalline wax and paraffin wax, and mix them to obtain liquid blended wax;

[0022] The dropping melting point of described refining Fischer-Tropsch wax is 71 ℃, and the weight percent of described refining Fischer-Tropsch wax is 55%, and the dropping melting point of described microcrystalline wax is 72 ℃, and the weight percent of described microcrystalline wax is 30%, The melting point of the paraffin is 58-60°C, and the weight percentage of the paraffin is 15%;

[0023] ②The liquid blending wax obtained in step ① is sprayed into particles by using a powder spraying chamber to obtain the special wax for controlled-release fertilizer coating.

[0024] The dropping melting point of the special wax for control...

Embodiment 2

[0026] A method for preparing special wax for controlled-release fertilizer coating by refined Fischer-Tropsch wax, microcrystalline wax and paraffin, said method comprising the steps of:

[0027] ①Under the condition of 80-100℃, melt refined Fischer-Tropsch wax, microcrystalline wax and paraffin wax, and mix them to obtain liquid blended wax;

[0028] The dropping melting point of described refined Fischer-Tropsch wax is 70-72 ℃, and the weight percent of described refined Fischer-Tropsch wax is 50%, and the dropping melting point of described microcrystalline wax is 72 ℃, and the weight percent of described microcrystalline wax is 35% %, the melting point of the paraffin is 61°C, and the weight percentage of the paraffin is 15%;

[0029] ②The liquid blending wax obtained in step ① is sprayed into particles by using a powder spraying chamber to obtain the special wax for controlled-release fertilizer coating.

[0030] The dropping melting point of the special wax for control...

Embodiment 3

[0032] A method for preparing special wax for controlled-release fertilizer coating by refined Fischer-Tropsch wax, microcrystalline wax and paraffin, said method comprising the steps of:

[0033] ①Under the condition of 80-90°C, melt refined Fischer-Tropsch wax, microcrystalline wax and paraffin wax, and mix them to obtain liquid blended wax;

[0034] The dropping melting point of described refining Fischer-Tropsch wax is 71 ℃, and the weight percent of described refining Fischer-Tropsch wax is 45%, and the dropping melting point of described microcrystalline wax is 72 ℃, and the weight percent of described microcrystalline wax is 40%, The melting point of the paraffin is 58-60°C, and the weight percentage of the paraffin is 15%;

[0035] ②The liquid blending wax obtained in step ① is sprayed into particles by using a powder spraying chamber to obtain the special wax for controlled-release fertilizer coating.

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Abstract

The invention relates to a method for preparing wax special for a controlled-release fertilizer envelope from refined Fischer-Tropsch wax, microcrystalline wax and paraffin. The method comprises the following steps: (1) at 80-120 DEG C, the refined Fischer-Tropsch wax, the microcrystalline wax and the paraffin are molten and evenly mixed, and liquid mix wax is obtained; and (2) the liquid mix waxobtained in the step (1) is sprayed into particles through a powder spraying bin, and the wax special for the controlled-release fertilizer envelope is obtained. Through the wax special for the controlled-release fertilizer envelope and prepared from the refined Fischer-Tropsch wax, the microcrystalline wax and the paraffin , the problems that an existing controlled-release fertilizer resin envelope is high in cost and prone to adhering are solved, and the controlled release effect is improved.

Description

technical field [0001] The invention relates to a method for preparing special wax for controlled-release fertilizer coating from refined Fischer-Tropsch wax, microcrystalline wax and paraffin wax. Background technique [0002] Controlled-release fertilizer is an advanced form of slow-release fertilizer. It uses coating technology to control the intelligent release of nutrients. It has the advantages of high efficiency, weight loss, labor saving, and safety. It is in line with the development direction of modern green agriculture and is a fertilizer that is mainly promoted by the Ministry of Agriculture. At present, it is developing rapidly at home and abroad, and the common controlled-release fertilizers on the market can be divided into: sulfur coating, resin coating, polyurethane coating, etc. [0003] Controlled-release fertilizer is a fertilizer coated with a polymer. The fertilizer particles are completely isolated from the outside, and only water molecules are allowed...

Claims

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Application Information

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IPC IPC(8): C05G3/00
CPCC05G5/38
Inventor 刘新涛
Owner DALIAN LONSIN NEW MATERIALS