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Method for producing fertilizer with high ammonium phosphate sulfate by adopting sulphur

A high-sulfur ammonium phosphate fertilizer technology, applied in the direction of fertilizer mixture, application, fertilization equipment, etc., can solve the problems of sulfur combustion, explosion, etc., and achieve the effect of safe addition and simple addition process

Inactive Publication Date: 2015-07-22
HUBEI FORBON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for producing high-sulfur ammonium phosphate fertilizer using sulfur, which uses elemental sulfur to replace the existing sulfate to increase the sulfur content in the ammonium phosphate fertilizer, and solves the combustion and explosion problems of sulfur during use. Add sulfur safely and effectively to ammonium phosphate fertilizer

Method used

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  • Method for producing fertilizer with high ammonium phosphate sulfate by adopting sulphur

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Preparation of ammonium phosphate fertilizer containing 8% sulfur:

[0018] raw material:

[0019] 200 mesh sulfur powder

[0020] Add Point: Pipe Anti-Slot

[0021] Since sulfur does not react in the ammonium phosphate production process, the total amount of sulfur powder added is calculated according to the final ammonium phosphate fertilizer containing 8% sulfur, and the metered sulfur powder is conveyed by a closed screw and added to the existing ammonium phosphate production process. In the pipe-reversing tank, the mass concentration of phosphoric acid liquid is 40%. The dust is collected by the ammonium phosphate production system, washed with water and entered into the ammonium phosphate production system to obtain 8% sulfur-containing ammonium phosphate fertilizer.

Embodiment 2

[0023] Preparation of ammonium phosphate fertilizer containing 10% sulfur:

[0024] raw material

[0025] 60 mesh sulfur powder

[0026] Dispersant sodium naphthalenesulfonate

[0027] thickener hydroxypropyl cellulose

[0028] Wetting agent AEO9

[0029] water

[0030] Adding point: in ammonium phosphate slurry

[0031] Prepare the sulfur dispersion in the following manner,

[0032] Since sulfur does not react in the ammonium phosphate production process, the total amount of sulfur powder added is calculated based on the final sulfur content of ammonium phosphate fertilizer 10%. Total: 50% of sulfur powder, 3% of sodium naphthalenesulfonic acid dispersant, 2% of thickener hydroxypropyl cellulose, 5% of wetting agent AEO9, the rest is water, the sum of each component is 100%, the above Put the materials into the sand mill separately, start the grinding, the speed is 2000 rpm, grind for at least 4 hours, and use the scraper fineness tester to detect until the sulfur fine...

Embodiment 3

[0035] Preparation of ammonium phosphate fertilizer with 15% sulfur content:

[0036] 80 mesh sulfur powder

[0037] Dispersant sodium naphthalenesulfonate

[0038] thickener hydroxypropyl cellulose

[0039] Wetting agent AEO9

[0040] water

[0041] Adding point: in phosphoric acid + ammonium phosphate slurry

[0042] 1. Since sulfur does not react during the ammonium phosphate production process, the total amount of sulfur powder added is calculated based on the final sulfur content of the ammonium phosphate fertilizer at 5%, and the measured sulfur powder is added to the phosphoric acid liquid, conveyed by a closed screw, and added In the phosphoric acid in the existing ammonium phosphate production process, wherein the mass concentration of phosphoric acid is 50%, the dust is collected by the ammonium phosphate production system, and washed into the ammonium phosphate production system;

[0043] 2. Prepare sulfur dispersion:

[0044] Since sulfur does not react in th...

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Abstract

The invention relates to a method for producing a fertilizer with high ammonium phosphate sulfate by adopting sulphur. The method is characterized by producing the fertilizer with high ammonium phosphate sulfate by utilizing elemental sulphur; the method comprises the following steps: adding sulphur powder in slurry, a tube reaction tank or washing liquid in the conventional production technology of the ammonium phosphate fertilizer; or / and preparing a sulphur water-based dispersion liquid from sulphur powder of 50-600 meshes, adding the prepared sulphur water-based dispersion liquid in the slurry, the tube reaction tank or the washing liquid, and obtaining the fertilizer with high ammonium phosphate sulfate. According to the method disclosed by the invention, the addition technology of the sulphur is simple, and the conventional production equipment does not need to be greatly modified; the addition is safe, the risks of the combustion and the explosion of the sulphur can be avoided; ammonium phosphate products containing different contents of sulphur can be produced according to demands for fertilizers, and the original nutrients of the ammonium phosphate fertilizers cannot be diluted too much; influence on the granulation of ammonium phosphate can be avoided.

Description

technical field [0001] The invention relates to a method for producing high-sulfur ammonium phosphate fertilizer by using sulfur. For the field of fertilizer manufacturing. Background technique [0002] The lack of flow in China's soil and the economic benefits it brings are becoming more and more obvious. In the 1993 symposium on "The Current Situation and Prospects of China's Sulfur Resources and Demand for Sulfur Fertilizers", some studies once again confirmed that China's sulfur deficiency situation is intensifying. Therefore, the demand for sulfur fertilizer is becoming more and more urgent. Soils in many provinces have been deficient in sulfur and are on the rise. It is reported that 267,000 hectares of farmland in Jiangxi Province, and 70,000 hectares of arable land in Zhejiang, Guangxi, Hainan, Yunnan, Guizhou and Fujian provinces are already deficient in sulfur. In Jiangxi province alone, about 42% of the soil is deficient in sulfur or potentially deficient in s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
Inventor 操素芬王仁宗
Owner HUBEI FORBON TECH
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