Granulation method of microbial fertilizer

A technology of microbial fertilizer and microbial bacteria, which is applied in the direction of microbial treatment, fertilizer made from biological waste, and bio-organic part treatment, can solve the problems of poor fertilizer efficiency stability and short fertilizer efficiency maintenance time, so as to improve environmental tolerance, Guaranteed long-term stability

Pending Publication Date: 2021-08-27

ANHUI GUMEI ECOLOGICAL AGRI TECH CO LTD

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AI-Extracted Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a granulation method of microbial bacterial fertilizer, which solves the problems of short ferti...

Abstract

The invention discloses a granulation method of a microbial fertilizer. The method comprises: carrying out solid fermentation on an organic material containing microbial bacteria to obtain a bacterial fertilizer, and carrying out molding granulation on the bacterial fertilizer to obtain bacterial fertilizer particles; carrying out surface mechanical activation treatment on the bacterial fertilizer particles; respectively preparing modified starch with the particle size of 0.01-5 microns and aerated concrete powder with the particle size of 50-200 microns, mixing the modified starch with the aerated concrete powder, adding a dispersing solvent, and stirring to obtain coating slurry; and carrying out coating treatment on the bacterial fertilizer particles by using the coating slurry, and drying to obtain the microbial fertilizer. In the granulation process of the biological bacterial fertilizer, the surfaces of fertilizer particles are firstly activated and then coated with the coating film prepared from the aerated concrete powder and the modified starch, so that fertilizer efficiency components are fully fixed and cannot be directly and completely collapsed, dissolved and lost when meeting water, and stable dissolution and emission of the fertilizer efficiency can be always kept by the microporous structure; therefore, the slow-release effect is achieved, the environmental tolerance of the biological bacterial fertilizer is improved, and the long-term stability of the fertilizer efficiency is ensured.

Application Domain

Bio-organic fraction processingExcrement fertilisers +7

Technology Topic

FertilizerEnvironmental chemistry +7

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Examples

Experimental program(3)
Comparison scheme(4)
Effect test(1)

Example Embodiment

[0022] Example 1

[0023] A microbial fertilizer granulation method, steps include:

[0024] Step 1: Solid fermentation of organic materials containing microbial bacteria, to obtain bacteria, and then formulate fungus granules, microbial bacteria are bacillus, and organic materials are cowsure;

[0025] The operation of the solid fermentation is: fermentation, stir, aerated, naturally heating, and the control temperature is 35 ° C, the oxygen content is 8%, and the pH is 6, and the hydrate is 6d;

[0026] Step 2: Place the strain particles in a steel spherical mill for stirring to perform surface mechanical activation;

[0027] Step 3: A refined concrete powder having a modified starch having a particle diameter of 0.01 to μm and a particle size of 50-70 μm, and the modified starch is mixed with the aerated concrete powder, and the mixed weight ratio is 5: 18, and then Add a dispersion solvent (water) to stir the coating;

[0028] The preparation step of the modified starch is: taking starch, at 40 ° C, using a crosslinking agent and an etherifying agent to crosslink an etherification reaction for 12 h, resulting in a precursor, and sodium polyacrylate is added to the precursor. Corner gum, then add water and thoroughly stirred for 5 h, and the reaction product is dried, and the modified starch is obtained; wherein the starch and crosslinking agent, etherification agent, sodium polyacrylate, Corner adhesive, water The weight ratio is 100: 0.5: 5: 0.4: 1: 100;

[0029] The aerated concrete powder is broken by a gas concrete product, and the raw material of the aerated concrete article includes 13.8% silicate cement, 13.8% lime, 2.96% gypsum, 0.0008% gas reagent, margin. For fly ash.

[0030] Step 4: Use high pressure gases to atomize the coated pulp, spray the fungal fertilizer particles in fluidized bed, then naturally cooled, and then microbial fertilizer after drying.

Example Embodiment

[0031] Example 2

[0032] A microbial fertilizer granulation method, steps include:

[0033] Step 1: Solid fermentation of organic materials containing microbial bacteria, resulting in bacteria, and then forming the fungus fertilizer to obtain bacterial fertilizer granules, microbial bacteria is a napotrene, the organic material is straw powder;

[0034] The operation of solid fermentation is: fermentation, stirring, aeration, natural heating, control temperature is 40 ° C, and the oxygen content is 12%, the oxygen content is 12%, and the phoxin is 7d;

[0035] Step 2: Place the strain particles in a steel spherical mill for stirring to perform surface mechanical activation;

[0036] Step 3: A refined concrete powder having a modified starch having a particle diameter of 1-2 μm and a particle diameter of 100-120 μm, and after mixing the modified starch and the aerated concrete powder, the mixed weight ratio is 11: 21, and then Add a dispersion solvent to stir to obtain a coating;

[0037] The preparation step of the modified starch is: taking starch, at 45 ° C, using a crosslinking agent and an etherified agent to crosslink the etherification reaction 11h to obtain a precursor, and sodium polyacrylate is added to the precursor. Corner gum, then add water and thoroughly stirred the reaction for 13 h, and the reaction product is dried to obtain a modified starch; wherein the starch and crosslinking agent, an etherification agent, sodium polyacrylate, a corona gum, and water. Weight ratio is 100: 0.8: 8: 1.2: 3: 150;

[0038] The aerated concrete powder is broken by a gas concrete product, and the raw material of the aerated concrete article includes 13.8% silicate cement, 13.8% lime, 2.96% gypsum, 0.0008% gas reagent, margin. For fly ash.

[0039] Step 4: Use high pressure gases to atomize the coated pulp, spray the fungal fertilizer particles in fluidized bed, then naturally cooled, and then microbial fertilizer after drying.

Example Embodiment

[0040] Example 3

[0041] A microbial fertilizer granulation method, steps include:

[0042] Step 1: Solid fermentation of the organic material containing microbial bacteria is given by bacterial fertilizer, and then the bacterial fertilizer is formed by molding granulation, and the microbial bacteria is the bacillus undergarment and the huge bacillus (mixed), the organic material is Soybean meal powder;

[0043] The operation of solid fermentation is: fermentation, stirring, aeration, natural heating temperature, and the control temperature of 45 ° C, the oxygen content is 15%, and the pH value is 8%, and the hydrate is 15%, and the phoxin is 8d;

[0044] Step 2: Place the strain particles in a steel spherical mill for stirring to perform surface mechanical activation;

[0045] Step 3: A refined concrete powder having a modified starch having a particle diameter of 4-5 μm and a particle diameter of from 180 to 200 μm, and the modified starch is mixed with the aerated concrete powder, and the mixing weight ratio is 1: 1, and then Add a dispersion solvent to stir to obtain a coating;

[0046] The preparation step of the modified starch is: taking starch, at 50 ° C, using a crosslinking agent and an etherify agent to crosslink the starch to obtain an etherification reaction for 10 h, to obtain a precursor, and sodium polyacrylate is added to the precursor. Corner gum, then add water and thoroughly stirred for 20 h, and the reaction product is dried to obtain a modified starch; wherein the starch and crosslinking agent, an etherification agent, sodium polyacrylate, a corona gum, and water. Weight ratio is 100: 1: 10: 2: 4: 200;

[0047]The aerated concrete powder is broken by a gas concrete product, and the raw material of the aerated concrete article includes 13.8% silicate cement, 13.8% lime, 2.96% gypsum, 0.0008% gas reagent, margin. For fly ash.

[0048] Step 4: Use high pressure gases to atomize the coated pulp, spray the fungal fertilizer particles in fluidized bed, then naturally cooled, and then microbial fertilizer after drying.

PUM

Property	Measurement	Unit
Particle size	0.01 ~ 1.0	µm
Particle size	50.0 ~ 70.0	µm
Particle size	1.0 ~ 2.0	µm

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AI-Extracted Technical Summary

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Description & Claims & Application Information

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