Preparation method of water dispersible granule medicinal fertilizer

A technology of dispersible granules and medicaments, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve granulation difficulties, product suspension rate, dispersibility and disintegration are difficult to meet standards, and it is difficult to see the compounding of liquid raw materials Problems such as the preparation process of water-dispersible granules, fertilizers, etc., to achieve excellent suspension rate, low cost, and guaranteed product quality

Active Publication Date: 2011-05-18
湖南大方农化股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing CN101671207B Chinese patent document discloses a bactericidal and production-increasing medicinal fertilizer and its use method, wherein it discloses medicinal fertilizer products using triazole fungicides such as difenoconazole and propiconazole as basic components, and Fungicides such as propiconazole are liquid at room temperature. According to the existing process, it is difficult to granulate after adsorption with ordinary fillers. Even if the granulation is successful, the suspension rate, dispersibility and disintegration of the product are also difficult. In addition, the disclosed medicinal fertilizer prod

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1:

[0028] A preparation method of the water-dispersible granule fertilizer of the present invention includes the following steps:

[0029] (1) Prepare raw materials: prepare the fillers, bactericides, composite active agents, micro-fertilizers and composite additives required for formulating pharmaceutical fertilizers according to the following mass fractions (in-kind weight, the same below) and proportions;

[0030] Difenoconazole (96.5%) (fungicide) 4.15%

[0031] Propiconazole (97.2%) (fungicide) 4.12%

[0032] Hexaconazole (97.0%) (bactericide) 4.13%

[0033] 2,4-Dichlorophenoxyacetic acid (plant growth regulator) 2%

[0034] Micro-fertilizer (ferrous sulfate and manganese sulfate with a mass ratio of 2:1) 50%

[0035] Lignosulfonate (dispersant) 6%

[0036] Alkyl naphthalene sulfonate (wetting agent) 4%

[0037] Bentonite (disintegrant) 5% and

[0038] Sodium benzoate (filler) balance;

[0039] (2) Feeding and mixing: first take half of the above-prepared filler sodium be...

Example Embodiment

[0046] Example 2:

[0047] A preparation method of the water-dispersible granule fertilizer of the present invention includes the following steps:

[0048] (1) Prepare raw materials: prepare the fillers, fungicides, compound active agents, micro-fertilizers and compound additives required for the preparation of pharmaceutical fertilizers according to the following mass fractions and proportions;

[0049] Propiconazole (97.2%) (fungicide) 13.38%

[0050] Tebuconazole (98.0%) (fungicide) 13.27%

[0051] 6-Benzyl adenine (plant growth regulator) 5%

[0052] Micro-fertilizer (mass ratio of zinc sulfate and ferrous sulfate 1:3) 30%

[0053] Anionic surfactant (dispersant) 8%

[0054] Alkyl sulfate (wetting agent) 4%

[0055] Bentonite (disintegrant) 5% and

[0056] Sodium formate (filler) balance;

[0057] (2) Feeding and mixing: first take part (80% of the prepared amount) of filler sodium formate to adsorb the above-mentioned liquid raw materials (including propiconazole and anionic surfactant)...

Example Embodiment

[0064] Example 3:

[0065] A preparation method of the water-dispersible granule fertilizer of the present invention includes the following steps:

[0066] (1) Prepare raw materials: prepare the fillers, fungicides, compound active agents, micro-fertilizers and compound additives required for the preparation of pharmaceutical fertilizers according to the following mass fractions and proportions;

[0067] Difenoconazole (96.5%) (fungicide) 41.46%

[0068] Propiconazole (97.2%) (fungicide) 15.44%

[0069] 2,4 Dichlorophenoxyacetic acid (plant growth regulator) 1%

[0070] Micro-fertilizer (ferrous sulfate, zinc sulfate and manganese sulfate with a mass ratio of 2:1:2) 5%

[0071] Lignosulfonate (dispersant) 6%

[0072] Alkyl sulfate (wetting agent) 3%

[0073] Bentonite (disintegrant) 5% and

[0074] Kaolin and sodium benzoate (mixed filler, mass ratio 1:9) balance;

[0075] (2) Feeding and mixing: first take a part (80% of the prepared amount) and mix the filler to absorb the above liquid ra...

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PUM

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Abstract

The invention discloses a preparation method of a water dispersible granule medicinal fertilizer, which comprises the following steps of: firstly preparing fillers, sterilizing agents, compound activating agents, micro element fertilizers and a compound assistant which are required for preparing the medicinal fertilizers according to component proportion of different medicinal fertilizers, wherein the sterilizing agents contain liquid raw materials; then, taking a part of fillers for adsorbing the liquid raw materials, adding rest of other components and uniformly mixing to obtain a raw material mixture; carrying out air current pulverization on the raw material mixture to be below 15 microns to obtain wettable powder; controlling the granularity D98 to be less than or equal to 15 microns and the suspension ratio to be over 80 percent; taking water-borne binder solutions and mixing the water-borne binder solutions with the wettable powder, and obtaining an intermediate product through squeezing granulation-drying or boiling granulation; and finally, screening to obtain the water dispersible granule medicinal fertilizer product with the required grain size. The preparation process has the advantages of environmental friendliness, security, low cost, capability of guaranteeing product quality and the like.

Description

technical field [0001] The invention relates to a preparation method of medicinal fertilizer, in particular to a preparation method of water-dispersible granule medicinal fertilizer. Background technique [0002] Pesticide water dispersible granules are a new dosage form developed in the 1980s. It is the most superior and competitive new dosage form among the current pesticide dosage forms. The process flow is as follows: prepare the original drug and auxiliary agents, etc. → Crushing→mixing→adding liquid to make soft material→granulating→drying→sieving→passing the test→packing. [0003] The preparation of pesticides into medicinal fertilizers and application in agricultural production is a technical unit that solves the problem of using both pests and fertilizers in agricultural production. Corresponding products are available at home and abroad. Existing research is still limited to the technical level of mixing medicine and fertilizer. For example, pesticide herbicides a...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 李宏民周尚泉李旭君刘松
Owner 湖南大方农化股份有限公司
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