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A kind of ammonification method to process weathered coal to produce potassium sulfate type compound fertilizer and its manufacturing method

A potassium sulfate type, weathered coal technology, applied in the direction of fertilization device, fertilizer mixture, application, etc., can solve the problems of economic loss, high input and low yield, soil degradation, etc.

Inactive Publication Date: 2011-12-14
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, in agricultural planting, due to the habit of fertilization that only pays attention to nitrogen, phosphorus, and potassium, and does not pay attention to organic matter and medium and trace elements, it leads to decline in soil fertility, nutrient imbalance, and soil degradation, which restricts the development of agricultural production. The phenomenon of low input and output, resulting in undue economic losses

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of ammonification process of the present invention processes weathered coal to produce potassium sulfate type compound fertilizer, is characterized in that comprising the proportioning of following parts by weight:

[0019] Weathered coal 30, sulfuric acid 6, gas ammonia 4, water 18,

[0020] Monoammonium phosphate 18, urea 3, potassium chloride 8, ammonium chloride 10,

[0021] Medium and trace element fertilizer 2, drought-resistant and water-retaining agent 1.

[0022] The medium and trace element fertilizer is one or a mixture of zinc sulfate, magnesium sulfate, borax, manganese sulfate and copper sulfate.

[0023] Described sulfuric acid adopts concentration to be the industrial concentrated sulfuric acid of 98%.

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

[0025] Step A) According to the above ratio, add 18 parts of water, ...

Embodiment 2

[0029] The ratio of parts by weight of raw materials of this product is: 32 parts of weathered coal; 7 parts of industrial sulfuric acid; 5 parts of ammonia gas; 18 parts of monoammonium phosphate; 18 parts of water; 5 parts of urea; 2 parts; 2 parts of zinc sulfate; 1.5 parts of borax, 0.5 parts of drought-resistant water-retaining agent.

[0030] Described sulfuric acid adopts concentration to be the industrial concentrated sulfuric acid of 98%.

[0031] Step A) According to the above ratio, add 18 parts of water, 22 parts of weathered coal with a fineness of ≤0.425mm and 18 parts of monoammonium phosphate into the dissolution tank for mixing and stirring to make a mixed slurry, and then add mixed acid to the slurry Tank and add 7 parts of industrial sulfuric acid to carry out stirring mixed acid reaction, resulting in a mixed acid slurry with a water content of about 28%.

[0032] Step B) Put the acid-mixed slurry in step A) into the neutralization reactor, and at the same...

Embodiment 3

[0035] The ratio of parts by weight of raw materials for this product is: 30 parts of weathered coal addition, 6 parts of industrial sulfuric acid, 20 parts of monoammonium phosphate, 22 parts of water, 4 parts of gaseous ammonia, 5 parts of urea, 15 parts of ammonium chloride, Potassium 8 parts, magnesium sulfate 5 parts.

[0036] Wherein step A) adds 22 parts of weathered coal, and step C) adds 8 parts of weathered coal.

[0037] Described sulfuric acid adopts concentration to be the industrial concentrated sulfuric acid of 98%.

[0038] Concrete production steps are with embodiment 1.

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Abstract

The invention belongs to the technical field of compound fertilizer production, and relates to an ammoniation method to process weathered coal to produce potassium sulfate type compound fertilizer and a manufacturing method thereof. It is formed by adding powdered weathered coal to the traditional ammoniated granulation potassium sulfate compound fertilizer production and activated by ammonia and acid. The product of the invention has reasonable compatibility and balanced nutrients, and has the functions of improving soil, stimulating the development of plant roots and improving fertilizer utilization rate, and is a new type of sulfur-based compound fertilizer rich in organic matter and various nutrient elements.

Description

technical field [0001] The invention belongs to the technical field of compound fertilizer production, and relates to an ammonification method for treating weathered coal to produce potassium sulfate type compound fertilizer and a manufacturing method thereof. Background technique [0002] At present, in agricultural planting, due to the habit of fertilization that only pays attention to nitrogen, phosphorus, and potassium, and does not pay attention to organic matter and medium and trace elements, it leads to the decline of soil fertility, nutrient imbalance, and soil degradation, which restricts the development of agricultural production. The phenomenon of low input and output results in undue economic losses. [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 li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
Inventor 曹广峰杨忠会许士明范秀凯
Owner SHANDONG SHOUGUANG DADI LVYUAN FERTILIZER IND
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