CN111087262A - Fertilizer deacidification agent - Google Patents

Abstract

The invention relates to a fertilizer deacidification agent which is added into a strong acid fertilizer to enable the pH value of the strong acid fertilizer to be neutral and improve the use safety of the crop fertilizer. The two dosage form products of the invention have different colors according to different added raw materials. The black granular formulation is produced by granulating ammonium bicarbonate, weathered coal and stone powder according to the proportion of 7:1: 2; the white granular formulation is produced by granulating ammonium bicarbonate and stone powder according to the proportion of 7: 3; has specific requirements on the quality index of the raw material. When the product is applied to reducing the acidity of the acidic fertilizer, the proper dosage is 4.5-7.5%.

Description

Fertilizer deacidification agent

Technical Field

The invention relates to a fertilizer deacidification agent which is added into a strong acid fertilizer to enable the pH value of the strong acid fertilizer to be neutral and improve the use safety of the fertilizer.

Background

At present, tail liquid after amino acid extraction in domestic grain fermentation production is completely used as a raw material of an organic fertilizer due to the fact that the tail liquid contains more organic substances and nitrogen, phosphorus and potassium nutrients, a spraying granulation technology is adopted to produce granular organic fertilizers, but the pH value of the produced organic fertilizer is generally between 3.0 and 4.0 due to the fact that the fermentation tail liquid is high in acidity, the organic fertilizer is a strong-acid fertilizer and does not meet the requirement that the pH value in organic fertilizer standards (NY 525-2012) of Ministry of agriculture stipulates 5.5-8.0, soil acidification can be caused by long-term application in agriculture, and the soil cultivated land quality is reduced; the phenomena of root burning and seedling burning and plant death can be seriously caused. If 4.5-7.5% of the product of the invention is added into the acid fertilizer, the acid fertilizer can be adjusted to be neutral fertilizer with pH value of 6-7, which meets the product standard requirement of organic fertilizer of Ministry of agriculture and improves fertilizer efficiency.

Disclosure of Invention

In order to solve the problems of low pH value and excessive acidity of the granular organic fertilizer prepared from fermentation tail liquid, the invention provides an acid reducing agent for granular fertilizer, which is added with 4.5-7.5% and uniformly mixed.

The technical scheme is as follows: 1 black fertilizer acid reducing agent granule product: ammonium bicarbonate: weathered coal: the stone powder is 70: 10: 20; mixing at a certain proportion, extruding and granulating, sieving, and packaging with inner plastic and outer woven wrapping material.

The raw materials are required to be ammonium bicarbonate powder, and the moisture content is less than 3.5%; weathered coal powder with fineness of more than 80 meshes and water content of less than 10 percent; the stone powder is powdery, the fineness is 80 meshes, and the water content is less than 2 percent;

production process, metering qualified raw materials → mixing → extruding granulation → sieving → inspection → packaging

The technical indexes of the product are black particles with the particle size of 3.0-4.0mm, more than 10 percent of ammonia nitrogen and more than 8 percent of organic matters.

2, white fertilizer acid reducing agent granule product: ammonium bicarbonate: the stone powder is 70: 30, of a nitrogen-containing gas; mixing at a certain proportion, extruding and granulating, sieving, and packaging with inner plastic and outer woven wrapping material.

The raw materials are required to be ammonium bicarbonate powder, and the moisture content is less than 3.5%; the stone powder is powdery, the fineness is more than 80 meshes, and the water content is less than 2 percent;

production process, metering qualified raw materials → mixing → extruding granulation → sieving → inspection → packaging

The technical index of the product is white granules with the grain diameter of 3.0-4.0mm and the ammonia nitrogen content of more than 10 percent.

Has the advantages that: the raw materials of the product are wide in source and easy to obtain; the production equipment technology is mature; the dosage of acid regulation for fertilizer is less.

And (3) test results: effect of acid reducing agent for acid fertilizer

Acid reducing agent: acidic fertilizer	pH value	Test method	Remarks for note
				0:100	3.40	NY525-2012
4.5:95.5	6.05	NY525-2012
				6.0:94	6.55	NY525-2012
7.5:92.5	7.15	NY525-2012

According to the requirement of organic fertilizer standard (NY 525-2012) of Ministry of agriculture and the adaptation condition of crops to acidity and alkalinity, the proper amount of acid reducing agent products added into the acid fertilizer is 4.5-7.5%.

Claims (7)

1. The acid reducing agent for the acid fertilizer is used for acidifying soil and reducing the quality of soil cultivated land due to long-term use of a large amount of acid fertilizer in the current domestic market; the phenomena of root burning and seedling burning and plant death can be seriously caused.

2. The existing conventional resources of ammonium bicarbonate, weathered coal and stone powder are scientifically mixed and granulated to prepare a brand new product.

3. The product has two dosage forms, one of which is a black fertilizer acid reducing agent granule product: ammonium bicarbonate: weathered coal: the stone powder is 70: 10: 20; mixing at a certain proportion, extruding and granulating, sieving, and packaging with inner plastic and outer woven wrapping material.

4. The raw materials are required to be ammonium bicarbonate powder, and the moisture content is less than 3.5%; weathered coal powder with fineness of 80 meshes and water content of less than 10 percent; the stone powder is powdery, the fineness is more than 80 meshes, and the water content is less than 2 percent;

production process, metering qualified raw materials → mixing → extruding granulation → sieving → inspection → packaging

The technical indexes of the product are black particles with the particle size of 3.0-4.0mm, more than 10 percent of ammonia nitrogen and more than 8 percent of organic matters.

5. And the second is a white fertilizer acid reducing agent granule product: ammonium bicarbonate: the stone powder is 70: 30, of a nitrogen-containing gas; mixing at a certain proportion, extruding and granulating, sieving, and packaging with inner plastic and outer woven wrapping material.

6. The raw materials are required to be ammonium bicarbonate powder, and the moisture content is less than 3.5%; the stone powder is powdery, the fineness is more than 80 meshes, and the water content is less than 2 percent;

production process, metering qualified raw materials → mixing → extruding granulation → sieving → inspection → packaging

The technical index of the product is white granules with the grain diameter of 3.0-4.0mm and the ammonia nitrogen content of more than 10 percent.

7. The product is used for reducing the acidity of the acid fertilizer, and the proper dosage of the product is 4.5-7.5%.