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Humic acid composite slow release fertilizer and producing method thereof

A slow-release fertilizer and humic acid technology, applied in organic fertilizers, fertilizer mixtures, fertilization devices, etc., can solve the problems of poor product appearance quality and internal quality slow-release properties, and achieve the improvement of seasonal utilization rate, soil fertility, and simplification. Effects of agricultural work

Active Publication Date: 2009-05-13
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, humic acid compound (mixed) hypertrophy is manufactured by disc or drum process through pellet method. The compound process of humic acid raw material and chemical fertilizer is mainly physical mixing, product appearance quality, internal quality, slow release, etc. are relatively poor

Method used

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  • Humic acid composite slow release fertilizer and producing method thereof
  • Humic acid composite slow release fertilizer and producing method thereof
  • Humic acid composite slow release fertilizer and producing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Weigh 100 parts by weight of dry, pulverized and sieved weathered coal of more than 80 meshes, add 25 parts by weight of ammonium bicarbonate and 20 parts by weight of water, stir evenly, compact into piles, cover with a layer of coal ash or plastic film, After standing for 3 days, the material was discharged to obtain the activated weathered coal. Then, add water to the activated weathered coal and mix to obtain the activated weathered coal slurry with a water content of 60%, then add respectively 20% ammonium sulfate, 10% potassium sulfate and 20% ammonium phosphate to make organic-inorganic composite slurry, stir and mix well, pass 8MPa, 150°C high-temperature steam into it, heat the organic-inorganic composite slurry to 60°C, and then use a high-pressure pump to compress air with 5.0MPa The slurry is atomized through the nozzle and directly sprayed into the 4.2m×22m drum of the spray granulation system (there are lifting boards on the walls around the drum, and ther...

Embodiment 2

[0053] Weigh 100 parts by weight of dry, pulverized and sieved weathered coal of more than 80 meshes, add 25 parts by weight of ammonium bicarbonate and 20 parts by weight of water, stir evenly, compact into piles, cover with a layer of coal ash or plastic film, After standing for 3 days, the material was discharged to obtain the activated weathered coal. Then, add water to the activated weathered coal and mix to obtain a slurry with a water content of 60%, and then meter and add 20% ammonium sulfate, 15% potassium chloride and 15% ammonium phosphate in parts by weight according to the nutrient ratio , to make an organic-inorganic composite slurry, stir and mix well, pass 8MPa, 150°C high-temperature steam into it, heat the organic-inorganic composite slurry to 60°C, and then use a high-pressure pump to directly blow the slurry with 5.0MPa compressed air Spray into the 4.2m×22m drum of the spray granulation system (there are lifting boards on the wall around the drum, and ther...

Embodiment 3

[0055] Weigh 100 parts by weight of dry, pulverized and sieved weathered coal of more than 80 meshes, add 25 parts by weight of ammonium bicarbonate and 20 parts by weight of water, stir evenly, compact into piles, cover with a layer of coal ash or plastic film, After standing for 3 days, the material was discharged to obtain the activated weathered coal. Then, add water to the activated weathered coal and mix to obtain a slurry with a water content of 60%, and then add 10% calcium nitrate, 10% potassium chloride, and 10% potassium sulfate in parts by weight according to the nutrient ratio and 15% ammonium phosphate to make an organic-inorganic composite slurry, stir and mix well, pass in pressurized high-temperature steam (8Pa, 150°C) to heat to 60°C, pass in 25kg of air to compress and atomize through a high-pressure pump (5Pa), Spray directly into the 4.2m×22m drum of the spray granulation system (there are lifting boards on the surrounding walls of the drum, and there are ...

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Abstract

The invention discloses a humic acid composite slow-release fertilizer and a method for preparing the same. In the fertilizer, weathered coal and the common fertilizer are used as raw materials, and subjected to activation of the weathered coal, material mixing, high-temperature spraying granulation and drying to obtain the fertilizer. By the organic-inorganic combination, the organic-inorganic mutual-aid control and the nutrient slow release, the fertilizer improves the utilization rate of the fertilizer (10 to 15 percent), reduces loss of nutrients and avoids the secondary pollution. The fertilizer has the characteristics of wide material source, high mechanical strength of fertilizer particle (the mechanical strength is more than and equal to 16N), no deliquescence, convenient transportation and use and the like, and has wide application prospect in production.

Description

【Technical field】 [0001] The invention relates to a slow-release fertilizer and a production method thereof, more particularly, the invention relates to a humic acid compound slow-release fertilizer and a production method thereof. 【Background technique】 [0002] The slow-release fertilizers developed at home and abroad are mainly coated slow-release fertilizers. There are mainly two types of coating materials used, one is organic polymers (such as resin polyolefins), and the other is insoluble or slightly soluble in water. Inorganic materials (such as sulfur, phosphate rock powder, calcium magnesium phosphate fertilizer, etc.). The production of polymer-coated slow-release fertilizers requires special coating towers and solvents. The coating materials are expensive, and the production process costs are high. The coating materials decompose slowly in the soil and tend to remain. However, the controlled release performance of high molecular polymer materials is better. Due ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00C05F11/02
Inventor 赵秉强李燕婷李秀英王丽霞
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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