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Preparation method and application of a fertilizer for preventing facility soil salinization

A salinization and soil technology, applied in the direction of application, fertilization device, fertilizer mixture, etc., can solve the problems of increasing fertilizer production cost, wasting energy, etc., and achieve the effect of reducing quantity, simple process and good growth

Active Publication Date: 2014-10-29
菏泽金正大生态工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

About 10% of the particle size of high-tower urea-sulfur-based compound fertilizers does not meet the product standards during the production process, and the material needs to be returned to re-granulate, which wastes energy and increases fertilizer production costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0013] A preparation method for preventing facility soil salinization fertilizer, comprising steps as follows:

[0014] (1) Production of high-tower urea-sulfur-based compound fertilizers, including heating, melting and mixing the compound fertilizer raw materials and filler materials, the molten slurry is sprayed from the top of the granulation tower through the granulation nozzle into the granulation tower, and the bottom of the tower is fed into the granulation tower , the slurry is cooled and granulated in the process of descending from the top of the tower and falls to the bottom of the tower to complete the granulation;

[0015] Wherein, the compound fertilizer raw material is composed of urea, monoammonium phosphate, potassium sulfate, and trace element fertilizer, urea: monoammonium phosphate: potassium sulfate: trace element fertilizer=1: 0.13~0.25: 0.4~0.7: 0.008~0.02 mass ratio ;

[0016] (2) Sieve the granulated materials, and those whose particle size meets the s...

specific Embodiment approach

[0036] The present invention will be further described below in conjunction with the examples, but not limited thereto.

[0037] The amounts and parts of raw materials in the examples are parts by mass, and all percentages are percentages by mass. Wherein, urea, diammonium phosphate, monoammonium phosphate, potassium sulfate, zinc sulfate, boric acid, potassium fulvic acid, bentonite, and zeolite powder are all commercially available products. Among them, potassium fulvic acid is produced by Liaocheng Tianyu Materials Co., Ltd. Nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP), content 97.00%, produced by J&K Chemical Co., Ltd., USA.

Embodiment 1

[0039]The preparation method of the fertilizer for preventing facility soil salinization, the steps are as follows:

[0040] (1) Get 55 kilograms of urea, 10 kilograms of monoammonium phosphate, 30 kilograms of potassium sulfate, 1 kilogram of zinc sulfate, and 4 kilograms of bentonite; produce and prepare high-tower urea sulfur-based compound fertilizer according to the prior art, including urea, monoammonium phosphate, Potassium sulfate, trace element fertilizers and fillers are separately measured, mixed and transported to the heater at the top of the high tower through the lifting device; melted into a slurry at 100-140 °C; the molten slurry is passed through the top of the granulation high tower After the granulation nozzle sprays out, it enters the granulation tower, and the bottom of the tower enters the air. During the process of falling from the top of the tower, the slurry falls slowly under the resistance of the rising air flow, and is cooled by the high tower to for...

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PUM

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Abstract

The invention relates to a preparation method and application of a fertilizer capable of preventing facility soil salinization. The method comprises the following steps: (1) producing a high-tower urine sulfur-based compound fertilizer according to the prior art; (2) screening the granulated material, wherein the particle size conforms to the standard as a urine sulfur-based compound fertilizer product, and large particles with the particle size of greater than 4.75mm and fine powder of less of 1mm are used as returned raw materials of the fertilizer capable of preventing soil salinization; and (3) mixing the high-tower urine sulfur-based compound fertilizer returned materials obtained in the step (2) and diammonium phosphate, pulverizing, adding potassium fulvate and a nitrification inhibitor, and granulating to obtain the fertilizer capable of preventing facility soil salinization. By combining the production of the high-tower urine sulfur-based compound fertilizer with the preparation of the fertilizer capable of preventing facility soil salinization, the technique is simple, and saves the production cost of the high-tower urine sulfur-based compound fertilizer and the fertilizer capable of preventing facility soil salinization; and the invention reduces the salt content in soil, and is beneficial to favorable growth of crops.

Description

technical field [0001] The invention relates to a preparation method and application of a fertilizer for preventing facility soil salinization by using high-tower urine-sulfur-based compound fertilizer as a return material, and belongs to the technical field of fertilizer production. Background technique [0002] The traditional soil salinization mainly refers to that in arid and semi-arid areas, due to climate reasons, the soil evaporates strongly, causing groundwater to rise along the soil capillary, and the salt moves up accordingly. The water is dissipated into the atmosphere with the evaporation process, and the salt When the salt ions accumulate to a certain extent, soil salinization occurs. The composition of salt ions in salinized soil varies with the composition of groundwater ions, mainly chlorine, sodium, sulfate, calcium, magnesium, etc. In recent years, in addition to such soil salinization due to groundwater, a new type of salinized soil, that is, salinization...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/04C05G3/08C05G1/06C05G3/80C05G3/90
CPCY02P60/21
Inventor 杨富裕刘庆华高义武徐恒军王仕青
Owner 菏泽金正大生态工程有限公司
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