Preparation method of mineral source nitro fulvic acid

A technology of nitrofulvic acid and minerals, which is applied in fertilizer mixtures, organic fertilizers, nitrogen fertilizers, etc., can solve the problems of low fulvic acid concentration, long process, and high energy consumption, and achieve high fulvic acid content, short process, The effect of less investment in equipment

Inactive Publication Date: 2020-01-21
YUNNAN YUNTIANHUA
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

This method uses more raw materials, has a long process, high energy consumption, and low concentration of fulvic acid

Method used

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  • Preparation method of mineral source nitro fulvic acid
  • Preparation method of mineral source nitro fulvic acid
  • Preparation method of mineral source nitro fulvic acid

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Experimental program
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Effect test

Embodiment 1

[0020] Raw material: lignite, the carbon content of raw coal is 57.22%, the total humic acid is more than 45%, the moisture is less than 20%, the ash content is 21.94%, and the volatile content is 20%. Industrial nitric acid: concentration 45%. Coal acid mass ratio: 1:0.5.

[0021] Preparation method: Dry the newly mined lignite ore with hot air at 150°C until the water content is 15-25%, crush the dried lignite block through a crusher, and then crush it through a Raymond mill. The particle size of the lignite powder is 60 mesh. The separated lignite powder and nitric acid solution were stirred and mixed for 50 minutes to obtain the product.

[0022] Test results: the content of fulvic acid in the product is 12.6%, and the water content is 14.1%.

Embodiment 2

[0024] Raw material: lignite, the carbon content of raw coal is 55.34%, the total humic acid is more than 45%, the moisture is less than 20%, the ash content is 21.94%, and the volatile content is 20%. Industrial nitric acid: concentration 50%. Coal acid mass ratio: 1:0.7.

[0025] Preparation method: Dry the newly mined lignite ore with hot air at 120°C until the water content is 15-25%, crush the dried lignite block through a crusher, and then crush it through a Raymond mill. The particle size of the lignite powder is 70 mesh. The sieved lignite powder and nitric acid solution were stirred and mixed for 60 minutes to obtain the product.

[0026] Test results: the content of fulvic acid in the product is 14.2%, and the water content is 11.5%.

Embodiment 3

[0028] Raw material: lignite, the carbon content of raw coal is 60.80%, the total humic acid is more than 45%, the moisture is less than 20%, the ash content is 21.94%, and the volatile content is 20%. Industrial nitric acid: concentration 53%. Coal acid mass ratio: 1:0.65.

[0029] Preparation method: Dry the newly mined lignite ore with hot air at 130°C until the moisture content is 15-25%, crush the dried lignite block through a crusher, and then crush it through a Raymond mill. The particle size of the lignite powder is 60 mesh. The sieved lignite powder and nitric acid solution were stirred and mixed for 70 minutes to obtain the product.

[0030] Test results: the content of fulvic acid in the product is 13.5%, and the water content is 9.2%.

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Abstract

The invention discloses a preparation method of mineral source nitro fulvic acid. The method comprises the following steps: drying lignite with hot air until the moisture content is 15-25%, then crushing the dried lignite to 30-100 meshes, uniformly mixing the lignite powder and a nitric acid solution according to a mass ratio of 1:0.4 to 1:0.7, and standing for 30-100 minutes to obtain the required product. According to the method, a dry process is adopted, solid-liquid separation and drying processes are not needed, the process is short, the equipment investment is low, the proportion of thenitric acid to the lignite is reasonable, and the content of fulvic acid in the obtained product is high. When the product is independently applied or added into diammonium phosphate or a compound fertilizer, crop root growth can be effectively promoted, root activity can be improved, crop nutrient absorption can be enhanced, drought resistance and stress resistance of crops can be enhanced, andthe nitrogen, phosphorus and potassium utilization rate of the fertilizer can be increased.

Description

technical field [0001] The invention belongs to the technical field of extraction of fulvic acid substances, and in particular relates to a preparation method of mineral source nitro fulvic acid. Background technique [0002] The main components of humic acid are fulvic acid, brown humic acid and black humic acid. The molecular weight of fulvic acid is 310-10100, the molecular weight of brown humic acid is 2010-20200, and the molecular weight of black humic acid is 1100-30200. Fulvic acid is the component with the smallest molecular weight and the largest activity in humic acid, and it is the essence of humic acid. The application of fulvic acid can promote plant growth, improve the yield and quality of crops, specifically: it can enhance the activity of various biological enzymes in crops, stimulate physiological metabolism; improve the utilization rate of chemical fertilizers, and promote the absorption of nitrogen, phosphorus and potassium by crops; Promote the growth o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05C11/00C05F11/02C05G3/80
CPCC05C11/00C05F11/02
Inventor 王国栋马克猛张元华刘文彪张星彭操
Owner YUNNAN YUNTIANHUA
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