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Activated granular calcium magnesium phosphate fertilizer and preparation method thereof

A technology of calcium-magnesium phosphate fertilizer and granules, which is applied in the direction of phosphate fertilizer, fertilization equipment, fertilizer mixture, etc., can solve the problems of limited activity improvement of calcium-magnesium phosphate fertilizer, and achieve the effect of improving nutrient release and simple production process

Inactive Publication Date: 2022-02-11
HUBEI FORBON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In patent CN101891530A, an activated calcium-magnesium phosphate fertilizer and its preparation method utilize quality, acid lignin, sodium lignin, alcohol waste liquid, monosodium glutamate waste liquid, monosodium glutamate waste residue, vinegar residue, furfural residue, beer filter mud, sugar factory filter One or a mixture of mud and weathered coal is used as an activator to activate calcium-magnesium phosphate fertilizers, but most of them are waste residues, and there is a great risk in manufacturing and using them.
[0007] In patent 104262020A, weak acid is used to treat calcium magnesium phosphate fertilizer to improve the activity of calcium magnesium phosphate fertilizer, but the activity of calcium magnesium phosphate fertilizer is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Place the powdered calcium magnesium phosphate in the raw material bin, and the citric acid dry substrate is placed in the excipient bin, and the powdered calcium magnesium phosphate fertilizer and the citric acid dry group are transferred to the ball mill in a weight part ratio 90:10.

[0027] (2) A aqueous solution of hydrochloric acid is a 10% concentration of 10% in the granulation liquid storage tank;

[0028] (3) Mixed ball calcium magnesium phosphate fertilizer and citric acid dry base by ball milling mills to fineness 80 mesh;

[0029] (4) Put the calcium magnesium phosphate fertilizer and the citric acid dryer mixture of ball mills into the granulator with the citric acid dryer mixture, and spray the mass concentration of 10% aqueous hydrochloride into the mixture fertilizer in the granulation cylinder. Particles, wherein the mass concentration of 10% hydrochloric acid is 0.07: 1.

[0030] (5) The particles are dried, and the screening treatment is obtained.

...

Embodiment 2

[0033] (1) Place the crystal calcium magnesium phosphate in the raw material bin, and the citric acid dry substrate is placed in the excipient bin, and the crystal calcium magnesium phosphate fertilizer and the citric acid dry group are transferred to the ball mill in a weight parts ratio 85:15.

[0034] (2) Aqueous hydrochloric acid has a water solution of 15% in the granulation liquid storage tank;

[0035] (3) Mix the crystal calcium magnesium phosphate fertilizer and citric acid dry base to fineness 80 mesh.

[0036] (4) Calcium magnesium phosphate fertilizer after ball milling and the citric acid dryer mixture is transferred to the granulator through the belt, and the mass concentration is uniformly sprayed into a mixture of aqueous hydrochloric acid to the granulation cylinder. Particles, wherein the amount of amount of aqueous hydrochloric acid aqueous hydrochloride is 0.1: 1.

[0037] (5) The particles are dried, and the screening treatment is obtained.

[0038] Through co...

Embodiment 3

[0040] (1) Place the sheet calcium magnesium phosphate in the raw material bin, and the oxalic acid dry group is placed in a coupling, and the chip calcium magnesium phosphate fertilizer and the oxalic acid dry group are transferred to the ball mill in a mass ratio 75:15.

[0041] (2) The aqueous solution of the sulfuric acid was configured in a 5% concentration of 5% in the granulation liquid storage tank.

[0042] (3) Mixed balls are mixed with oxalic acid dry base by a ball mill.

[0043] (4) Transfer the calcium magnesium phosphate fertilizer and the oxalic acid dry base mixture with the oxalic acid dry base mixture to the granulator cylinder, and the mass concentration is sprayed into a mixture of 5% sulfuric acid solution to the mixture of the granulation cylinder to granules into particles Among them, the mass concentration of 5% aqueous solution of sulfuric acid and the mass ratio of sheet calcium magnesium phosphate fertilizer is 0.05: 1.

[0044] (5) The particles are dr...

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PUM

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Abstract

The invention relates to an activated granular calcium magnesium phosphate fertilizer and a preparation method thereof. The activated granular calcium magnesium phosphate fertilizer is prepared from a calcium magnesium phosphate fertilizer and activating agents, wherein the activating agents are weak acid and strong acid. The preparation method comprises the following steps: (1) conveying raw material-shaped calcium magnesium phosphate and a dry basis of weak acid into a ball mill for ball milling, fully mixing the raw material-shaped calcium magnesium phosphate and the weak acid until a certain fineness is reached, and feeding the formed mixture into a granulation roller; (2) spraying strong acid onto a material layer in the granulation roller, and conducting granulating by using the roller; and (3) drying and screening prepared particles to finally obtain a finished product. The calcium magnesium phosphate fertilizer can effectively improve the nutrient release of the calcium magnesium phosphate fertilizer, and the preparation method is simple and convenient in production process and is suitable for large-scale production.

Description

Technical field: [0001] The present invention relates to the production of particulate calcium magnesium phosphate fertilizer, in particular, to the preparation method of active particulate calcium magnesium phosphate fertilizer, belonging to the field of fertilizer manufacturing. Background technique [0002] Calcium magnesium phosphate fertilizer belongs to a high-reducing fertilizer, but the nutrient release of calcium-magnesium phosphate fertilizer is slow to sustained release fertilizer, but due to how much calcium magnesium phosphate is fertilized, and the calcium magnesium phosphate fertilizer is released slowly to the crop. Rapid is displayed, so calcium magnesium phosphate is not welcomed by the public. [0003] Calcium-magnesium phosphate fertilizer is one of the fertilizers that my country allow in "green food", is considered to be polluted with pollution-free fertilizers in Southeast Asia, and calcium magnesium phosphate fertilizer is also a fertilizer for carbon emis...

Claims

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Application Information

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IPC IPC(8): C05G3/40C05G5/12
CPCC05G3/40C05B13/02C05G5/12
Inventor 王仁宗王兴
Owner HUBEI FORBON TECH
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