Nitryl fertilizer containing activated mineral resource humic acid and preparation method thereof

A humic acid and fertilizer technology, applied in organic fertilizers, inorganic fertilizers, calcareous fertilizers, etc., can solve problems such as intractability, and achieve the effects of increasing content, reducing viscosity and increasing solubility

Inactive Publication Date: 2019-03-19
郑利
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, this method can not discharge phosphogypsum, solves the problem of difficult disposal of phosphogypsum (calcium sulfate) waste residue that is ubiqui

Method used

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  • Nitryl fertilizer containing activated mineral resource humic acid and preparation method thereof
  • Nitryl fertilizer containing activated mineral resource humic acid and preparation method thereof
  • Nitryl fertilizer containing activated mineral resource humic acid and preparation method thereof

Examples

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Example Embodiment

[0039] A preparation method of a nitro fertilizer containing activated mineral source humic acid, comprising the following steps:

[0040] Mixing nitric acid and inorganic minerals, dissolving the inorganic minerals to obtain an acid hydrolyzate; adding mineral humic acid to the acid hydrolyzate, adding excess nitric acid for activation, and adding alkali to the activated acid hydrolyzate to neutralize the remaining nitric acid , evaporative concentration, granulation or pulverization, and drying to obtain the nitro fertilizer.

[0041] In the preparation method of the nitro fertilizer containing activated mineral humic acid provided by the present invention, a compound fertilizer is prepared by using mineral humic acid and inorganic minerals, and nitric acid is added for activation, and after activation, nitro groups are added to the humic acid molecules , Convert the mineral humic acid from the macromolecular part to the small molecule, reduce the content of black humic acid...

Example Embodiment

[0067] Example 1

[0068] Nitrophosphate fertilizer is prepared by the method provided in this application, such as figure 1 shown, including the following steps:

[0069] Mix nitric acid with phosphate rock, dissolve the phosphate rock, separate insoluble matter, obtain an acid hydrolyzate, add sulfuric acid with an equimolar amount of calcium content in the phosphate rock, make calcium precipitate in the form of calcium sulfate, and filter to remove calcium sulfate; Peat humic acid is added to the hydrolysis solution, and nitric acid with 30% of the mass of peat humic acid is added for activation (plus the residual nitric acid in the acid hydrolysis solution, the nitric acid content is excessive relative to the mineral humic acid) to activate, and ammonia gas is introduced into the activated acid hydrolysis solution. Neutralize the remaining nitric acid, evaporate and concentrate, granulate and dry to obtain the nitrophosphate fertilizer.

Example Embodiment

[0071] Example 2

[0072] Nitrophosphate fertilizer is prepared by the method provided in this application, such as image 3 shown, including the following steps:

[0073] Mixing nitric acid and phosphate rock, dissolving the phosphate rock, separating the insoluble matter, to obtain an acid hydrolyzed solution, cooling the acid hydrolyzed solution to below -5 ° C, after the crystallization of calcium nitrate tetrahydrate, filtering to remove the calcium nitrate; in the acid hydrolyzed solution Add lignite humic acid, and add nitric acid with a mass of 50% of the lignite humic acid (plus the residual nitric acid in the acid hydrolysis solution, the nitric acid content is excessive relative to the mineral humic acid) to activate, and the activated acid hydrolyzed solution is passed into ammonia gas for neutralization The remaining nitric acid is evaporated, concentrated, granulated and dried to obtain the nitrophosphate fertilizer.

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Abstract

The invention provides a nitryl fertilizer containing activated mineral resource humic acid and a preparation method thereof. The method comprises the following steps: mixing nitric acid with an inorganic mineral, dissolving the inorganic mineral, and separating insoluble substances to obtain an acidolysis liquid; adding mineral resource humic acid to the acidolysis liquid, adding excessive nitricacid for activation, adding alkali into the activated acidolysis liquid to neutralize residual nitric acid, evaporating and concentrating, pelletizing or milling powder, and drying to obtain the nitryl fertilizer. A composite fertilizer is prepared by adopting the mineral resource humic acid and the inorganic mineral, nitric acid is added for activation, and after activation, nitryl groups are added to humic acid molecules, to convert the mineral resource humic acid from large molecules to small molecules, and therefore, the content of humus is reduced, the contents of ulmic acid and fulvic acid are increased, the solubleness is improved, and the fertilizer efficiency is improved; the preparation method is improved on the basis of an original process, without increasing a too complex production line, and thus has the advantages of being convenient, simple, and easy for production.

Description

technical field [0001] The invention relates to the technical field of fertilizer preparation, in particular to a nitro fertilizer containing activated mineral source humic acid and a preparation method thereof. Background technique [0002] Humic acid fertilizer is a kind of organic fertilizer. Natural humic acid is formed by the decomposition of plant residues. It widely exists in dry soil, river mud and shallow buried weathered coal, peat and lignite. Contains carbon, hydrogen, oxygen, nitrogen and other elements, and has a certain fertilizer effect, but most of them are insoluble in dry water. If they are combined with potassium, sodium, ammonium and other substances and ammoniated in the sun, they are easily absorbed by plants as nutrients. [0003] In the existing preparation method of the nitro fertilizer (comprising elemental fertilizer and compound fertilizer) that contains activated ore source humic acid, usually earlier adopt nitric acid and ore or ore powder re...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05G3/80
CPCC05B17/00C05D3/02C05G3/80C05F11/02C05D5/00
Inventor 郑利张云
Owner 郑利
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