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Weathered coal-containing potassium sulfate composite fertilizer treated by acidulation and manufacturing method thereof

A potassium sulfate type, weathered coal technology, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve problems such as inability to be absorbed by plants, soil compaction, and low fertilizer efficiency and utilization rate.

Inactive Publication Date: 2012-02-08
SHANDONG SHOUGUANG DADI LVYUAN FERTILIZER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, potassium sulfate compound fertilizers do not contain organic matter, and the utilization rate of fertilizer efficiency is low. Long-term use may easily cause soil compaction.
Some potassium sulfate compound fertilizers containing organic matter cannot be absorbed by plants due to the poor activity of organic matter

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of acid analysis method of the present invention processes weathered coal to produce potassium sulfate type compound fertilizer, comprises the proportioning of following parts by weight:

[0020] Weathered coal 30, sulfuric acid 24, gas ammonia 3,

[0021] Monoammonium phosphate 20, urea 5, potassium chloride 14,

[0022] Medium and trace element fertilizer5.

[0023] The medium and trace element fertilizer is one or a mixture of magnesium sulfate, zinc sulfate, borax and calcium powder. Described sulfuric acid adopts concentration to be the industrial concentrated sulfuric acid of 98%.

[0024] The manufacture method that described a kind of acid analysis process weathered coal production potassium sulfate type compound fertilizer comprises the steps:

[0025] Step A) According to the above ratio, measure potassium chloride and 22 parts of weathered coal into the conversion tank and add sulfuric acid to carry out low-temperature potassium bisulfate conversion...

Embodiment 2

[0030] The ratio of parts by weight of the raw materials of this product is: 32 parts of powdery weathered coal; 24.5 parts of industrial sulfuric acid; 15.8 parts of potassium chloride; 4.2 parts of ammonia gas; 24.5 parts of monoammonium phosphate; 10.5 parts of urea; 26 parts of hydrochloric acid.

[0031] Step A) Add 15.8 parts of potassium chloride, 22 parts of weathered coal with a fineness of ≤0.425mm and 24.5 parts of industrial sulfuric acid into the potassium hydrogensulfate conversion tank after metering, and carry out low-temperature potassium hydrogensulfate conversion reaction and acid analysis of humic acid Activation treatment made excess sulfuric acid, potassium bisulfate and weathered coal mixed slurry, then added 1.5 parts of gas ammonia for preliminary neutralization reaction, while absorbing the hydrogen chloride gas released during the conversion of potassium bisulfate, and produced through three-stage absorption 26 parts of 30% industrial hydrochloric ac...

Embodiment 3

[0036] The ratio of parts by weight of the raw materials of this product is: 30 parts of powdery weathered coal addition, 25 parts of industrial sulfuric acid, 15 parts of potassium chloride, 5 parts of ammonia gas, 29 parts of monoammonium phosphate, 13 parts of urea, 3 parts of calcium powder share. The production process produces 25 parts of by-product 30% hydrochloric acid

[0037] Wherein step A) adds 22 parts of weathered coal, and step D) adds 8 parts of weathered coal. Step B) add 9 parts of monoammonium phosphate, and step D) add 20 parts.

[0038] Concrete production steps are with embodiment 1.

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Abstract

The invention belongs to the technical field of composite fertilizer production, and relates to weathered coal-containing potassium sulfate composite fertilizer treated by acidulation and a manufacturing method thereof. Traditional ammonified granular potassium sulfate composite fertilizer is added with powdery weathered coal and then is subjected to activation treatment by ammonia and an acid toform the weathered coal-containing potassium sulfate composite fertilizer treated by acidulation. The weathered coal-containing potassium sulfate composite fertilizer treated by acidulation has the advantages of reasonable compatibility, balanced nutrition, and good effects of improving soil quality, stimulating plant root development and improving a fertilizer utilization rate. The weathered coal-containing potassium sulfate composite fertilizer treated by acidulation is novel sulfur-base composite fertilizer rich in organic matters and multiple nutrient elements.

Description

technical field [0001] The invention belongs to the technical field of compound fertilizer production, and relates to an acid analysis method for treating weathered coal to produce potassium sulfate type compound fertilizer and a manufacturing method thereof. Background technique [0002] At present, potassium sulfate-type compound fertilizers do not contain organic matter, and the utilization rate of fertilizer efficiency is low, and long-term use is likely to cause soil compaction. Some potassium sulfate compound fertilizers containing organic matter cannot be absorbed by plants due to the poor activity of organic matter. [0003] Weathered coal is a coal seam that is exposed on the surface or buried in the shallow part. It has been in contact with water and air for a long time, and has undergone long-term oxidation and hydrolysis weathering, making the coal loose and brittle, with light color and increased humidity. Great changes have taken place, and its chemical and ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
Inventor 杨洁杨忠会曹杰许士明
Owner SHANDONG SHOUGUANG DADI LVYUAN FERTILIZER IND
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