Preparation method of water-soluble humic acid fertilizer

A technology of water-soluble humic acid and humic acid, which is applied in the direction of alkaline orthophosphate fertilizer, nitrate fertilizer, ammonium orthophosphate fertilizer, etc., can solve the problems of affecting fertilizer efficiency and unsatisfactory effect

Inactive Publication Date: 2020-10-27
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] According to the above, the trace elements in the water-soluble humic acid fertilizer in the existing scheme are easy to react with the nitrogen source, phosphorus salt, potassium salt and weakly acidic water in the soil to form precipitation, which affects the fertilizer efficiency, while the existing technology utilizes the addition of buffer The method of solvent-promoting agent, anti-flocculation agent, etc., the effect is unsatisfactory, the present invention proposes a kind of preparation method of water-soluble humic acid fertilizer, can effectively solve the above-mentioned technical problem

Method used

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  • Preparation method of water-soluble humic acid fertilizer

Examples

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Effect test

Embodiment 1

[0033] (1) Add mineral humic acid to the colloid mill for grinding, then add hydrogen peroxide solution, and then inject ozone from the bottom to oxidize mineral humic acid, set the colloid mill speed to 11000r / min, and the line speed to 28m / s, keep the pressure at 0.3MPa, and release to normal pressure after grinding for 4 hours, the obtained oxidized mineral source humic acid; the mineral source humic acid is weathered coal humic acid; the mass fraction of hydrogen peroxide solution is 36%;

[0034] The ratio of each raw material is, by weight, 46 parts by weight of mineral source humic acid, 3 parts by weight of hydrogen peroxide solution, and 0.05 parts by weight of ozone;

[0035] (2) Continue to add potassium hydroxide solution to the colloid mill of oxidized ore humic acid prepared in step (1), grind and activate, accelerate the dissolution of oxidized humic acid in alkali, set the colloid mill speed to 6800 r / min, The linear speed is 19m / s, and the grinding time at no...

Embodiment 2

[0044] (1) Add mineral humic acid to the colloid mill for grinding, then add hydrogen peroxide solution, and then inject ozone from the bottom to oxidize mineral humic acid. Set the colloid mill speed to 9000r / min and the line speed to 26m / s, keep the pressure at 0.25MPa, and release it to normal pressure after grinding for 4 hours to obtain the oxidized mineral source humic acid; the mineral source humic acid is peat humic acid; the mass fraction of hydrogen peroxide solution is 32%;

[0045] The ratio of each raw material is, in parts by weight, 48 parts by weight of mineral source humic acid, 3 parts by weight of hydrogen peroxide solution, and 0.05 parts by weight of ozone;

[0046] (2) Continue to add potassium hydroxide solution to the colloid mill of oxidized ore humic acid prepared in step (1), grind and activate, accelerate the dissolution of oxidized humic acid in alkali, set the colloid mill speed to 6500 r / min, The linear speed is 16m / s, and the grinding time at n...

Embodiment 3

[0055] (1) Add mineral humic acid to the colloid mill for grinding, then add hydrogen peroxide solution, and then inject ozone from the bottom to oxidize mineral humic acid. Set the colloid mill speed to 11000r / min and the line speed to 32m / s, keep the pressure at 0.4MPa, and release to normal pressure after grinding for 3h, the obtained oxidized mineral source humic acid; the mineral source humic acid is lignite humic acid; the mass fraction of hydrogen peroxide solution is 38%;

[0056] The ratio of each raw material is, in parts by weight, 42 parts by weight of mineral source humic acid, 4 parts by weight of hydrogen peroxide solution, and 0.06 parts by weight of ozone;

[0057] (2) Continue to add potassium hydroxide solution to the colloid mill of oxidized ore humic acid prepared in step (1), grind and activate, accelerate the dissolution of oxidized humic acid in alkali, set the colloid mill speed to 7500 r / min, The linear speed is 22m / s, and the grinding time at normal...

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Abstract

The invention relates to the field of water-soluble fertilizers, and discloses a preparation method of a water-soluble humic acid fertilizer. The preparation method comprises the following steps of: (1) adding mineral source humic acid and a hydrogen peroxide solution into a colloid mill, and introducing ozone for grinding to obtain oxidized mineral source humic acid; (2) continuously adding a potassium hydroxide solution into the colloid mill for grinding to prepare activated mineral source humic acid; (3) adding citric acid, sodium carboxymethyl cellulose and water into the colloid mill forgrinding, and performing filtering to obtain a colloid humic acid mixed solution; and (4) adding the colloidal humic acid mixed solution into monoammonium phosphate, potassium dihydrogen phosphate, potassium sulfate, magnesium nitrate, urea, trace elements and water, performing stirring and dissolving, conducting filtering and concentrating under reduced pressure, and carrying out spray drying toobtain the water-soluble humic acid fertilizer. According to the method disclosed by the invention, humic acid is oxidized and activated in a high-shear colloid mill to form colloid, and indissolvableand insoluble substances are removed in a manner of filtering twice and concentrating once, so that the humic acid fertilizer with good water solubility is obtained.

Description

technical field [0001] The invention relates to the field of water-soluble fertilizers, and discloses a preparation method of water-soluble humic acid fertilizers. Background technique [0002] Water-soluble fertilizer is a multi-component compound fertilizer that can be completely dissolved in water. It can be quickly dissolved in water and is more easily absorbed by crops, and its absorption and utilization rate is relatively high. More importantly, it can be applied to drip irrigation And other facility agriculture, realize the integration of water and fertilizer, and achieve the efficiency of saving water, fertilizer and labor. Compared with traditional fertilizers, not only the formulations are diverse, but also the application methods are flexible. Water-soluble fertilizers can be irrigated with the soil, so that the roots of the plants can fully contact the fertilizers; they can be sprayed on the leaves and enter the plants through the stomata on the leaves to improv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/40C05G3/80
CPCC05B7/00C05G3/44C05G3/80C05C3/00C05C5/00C05C9/00C05D1/02C05D9/02C05F11/02
Inventor 陈庆陈巧和陈涛
Owner CHENDU NEW KELI CHEM SCI CO LTD
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