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Water-soluble fertilizer and preparation method

A water-soluble fertilizer and hydrophilic technology, applied in fertilizer forms, fertilization devices, fertilizer mixtures, etc., can solve problems such as incomplete solubility, insufficient mixing, environmental pollution, etc., to improve microbial activity, improve crop quality, and increase agglomeration. effect of structure

Active Publication Date: 2015-07-08
河北中仁化肥集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The trace elements used in this water-soluble fertilizer are compounds, and resources are in short supply. The extraction process causes environmental pollution, and the diatomite added after granulation is not soluble in water. This method makes it into a dispersion slurry, but it is not water-soluble. Good solution suspended in water, easy to cause pipe blockage
[0007] According to the above, the existing solid water-soluble fertilizer has incomplete solubility, insufficient mixing, limited absorption rate and utilization rate, and insufficient nutrients. Although the water-soluble fertilizer with chelated trace elements has complete nutrients, its particle size is relatively large. , the ions cannot be released well in water, and the price is expensive, which is not easy for users to accept, and the market application is limited.

Method used

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  • Water-soluble fertilizer and preparation method
  • Water-soluble fertilizer and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0034] Implementation case 1, A kind of nanometer multi-nutrient water-soluble fertilizer, its component ratio is as follows, and each component is weight part:

[0035] 20% urea, 22% monoammonium phosphate, 32% potassium dihydrogen phosphate, 5% medical stone, 5% dolomite, 1% polyvinyl alcohol, 4% carboxymethyl cellulose, 4% polyaspartic acid, Carboxymethyl starch 5%, citric acid 2%.

[0036] The preparation method steps are as follows:

[0037] (1) Grind 5% medical stone and 5% dolomite to 1500~2500 mesh respectively with a mill. During the grinding process, add 1% of the hydrophilic grafting agent polyvinyl alcohol to graft the hydrophilic substance. spare;

[0038] (2), add the medical stone powder and dolomite powder obtained in step (1), 20% urea, 22% monoammonium phosphate, and 32% potassium dihydrogen phosphate into the reactor, then inject a certain amount of water, stir, Make it dissolve, medical stone powder and dolomite powder are suspended in water;

[0039]...

Embodiment example 2

[0044] Implementation Case 2 , a kind of nanometer multi-nutrient water-soluble fertilizer, its component ratio is as follows, and each component is weight part:

[0045] 20% urea, 25% monoammonium phosphate, 30% potassium dihydrogen phosphate, 6% medical stone, 5% dolomite, 1% polyvinyl alcohol, 2% carboxymethyl cellulose, 3% polyaspartic acid, Carboxymethyl starch 3%, citric acid 1%.

[0046] The preparation method steps are as follows:

[0047] (1) Grind 6% medical stone and 5% dolomite to 1500~2500 mesh respectively with a mill. During the grinding process, add 1% of the hydrophilic grafting agent polyvinyl alcohol to graft the hydrophilic substance. spare;

[0048] (2), add the medical stone powder and dolomite powder obtained in step (1), 20% urea, 25% monoammonium phosphate, and 30% potassium dihydrogen phosphate into the reactor, then inject a certain amount of water, stir, Make it dissolve, medical stone powder and dolomite powder are suspended in water;

[0049...

Embodiment example 3

[0054] Implementation Case 3 , a kind of nanometer multi-nutrient water-soluble fertilizer, its component ratio is as follows, and each component is weight part:

[0055] 22% urea, 20% monoammonium phosphate, 32% potassium dihydrogen phosphate, 6% medical stone, 5% dolomite, 1% polyvinyl alcohol, 4% carboxymethyl cellulose, 4% polyaspartic acid, Carboxymethyl starch 4%, citric acid 2%.

[0056] The preparation method steps are as follows:

[0057] (1) Grind 6% medical stone and 5% dolomite to 1500~2500 mesh respectively with a mill. During the grinding process, add 1% of the hydrophilic grafting agent polyvinyl alcohol to graft the hydrophilic substance. spare;

[0058] (2), add the medical stone powder and dolomite powder obtained in step (1), 22% urea, 20% monoammonium phosphate, and 32% potassium dihydrogen phosphate into the reactor, then inject a certain amount of water, stir, Make it dissolve, medical stone powder and dolomite powder are suspended in water;

[0059...

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Abstract

A water-soluble fertilizer. The invention belongs to the field of a crop fertilizer and specifically relates to a nano-scale multi-nutrient water-soluble fertilizer. The water-soluble fertilizer is composed of urea, monoammonium phosphate, potassium dihydrogen phosphate, Chinese medical stone, dolomite and other additives. The water-soluble fertilizer is prepared by the following steps: firstly micronizing Chinese medical stone and dolomite and carrying out water dissolution treatment, dissolving the mixture in water and simultaneously adding urea, monoammonium phosphate and potassium dihydrogen phosphate to be dissolved together, sending the mixture into a high pressure homogenizer for homogenization and refining to nanometers, adding the additives and mixing, concentrating and crystallizing, filtering and drying, crushing and packaging to obtain the nano-scale multi-nutrient water-soluble fertilizer. The water-soluble fertilizer has advantages of uniform color and granularity, adequate nutrient and fine particles and helps plants absorb nutrients. By the use of the water-soluble fertilizer, absorption and utilization of the fertilizer are raised for crops. Meanwhile, soil structure can be improved. Soil hardening is prevented, soil granulation is enhanced, microbial activity of plant roots is raised, and product quality of crops is promoted. The water-soluble fertilizer has good water solubility, is irrigated with water, will not block pipelines, and is suitable for integration of water and fertilizer.

Description

technical field [0001] The invention belongs to the field of fertilizers for crops, and more precisely relates to a nanometer multi-nutrient water-soluble fertilizer. Background technique [0002] Water-soluble fertilizer is a multi-component compound fertilizer soluble in water. It is a new type of fertilizer that has emerged in recent years. It can be quickly dissolved in water, more easily absorbed by crops, and has a relatively high absorption and utilization rate, realizing the integration of water and fertilizer. , to achieve the effect of saving water, fertilizer and labor. [0003] At present, my country is vigorously developing modern agriculture, and the demand for new fertilizers is increasing, and the requirements are getting higher and higher. Most of the current water-soluble fertilizers are liquid fertilizers, and there are relatively few solid water-soluble fertilizers. Although solid water-soluble fertilizers can be quickly dissolved in water, the absorptio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G1/00C05G5/00
Inventor 陈庆张芝媛
Owner 河北中仁化肥集团有限公司
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