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Active phosphate fertilizer as well as preparation method and application thereof

A phosphate fertilizer, active technology, applied in the direction of phosphate fertilizer, application, Thomas phosphate fertilizer, etc., can solve the problem of unsatisfactory activation and dephosphorization effect, and does not solve the problem of phosphorus activation, release and re-fixation, etc., to achieve rich content, easy implementation, and improved fertilizer utilization. Effect

Active Publication Date: 2013-04-17
深圳市杜高生物新技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these processes have certain activation and phosphorus-dissolving effects on the refractory phosphorus in phosphate rock powder, the effects of activation and phosphorus-dissolving are not ideal, and the problems of activated release of phosphorus and re-fixation of phosphorus have not been solved.

Method used

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  • Active phosphate fertilizer as well as preparation method and application thereof
  • Active phosphate fertilizer as well as preparation method and application thereof
  • Active phosphate fertilizer as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Hydrolysis: add the crushed pig hair to the reactor, and then hydrolyze the mixed acid with 15wt% hydrochloric acid, 15wt% nitric acid and 20wt% sulfuric acid in a ratio of 4:3:3 by mass. The mass ratio of the mixed acid is 1:1.6. After 30 minutes, the temperature is raised to 110°C and hydrolyzed for 6 hours to obtain an amino acid mixture such as figure 2 Shown in A.

[0045] (2) Filtration: After hydrolysis, let it stand for 2 hours, and filter after cooling to obtain amino acid liquid and amino acid residue.

[0046] (3) Activation: Add the filtered amino acid residue to the phosphate rock powder, the mass ratio of the phosphate rock powder to the amino acid residue is 3:1; add an appropriate amount of water (10% of the mass of the phosphate rock powder), and stir for 30 minutes.

[0047] (4) Neutralization: After activation, add lime and magnesium oxide for neutralization; the added amount of lime and magnesium oxide is 8% of the mass of the amino acid residue.

[004...

Embodiment 2

[0052] (1) Hydrolysis: add the crushed pig hair to the reactor, and then hydrolyze the mixed acid with 15wt% hydrochloric acid, 15wt% nitric acid and 20wt% sulfuric acid in a ratio of 4:3:3 by mass. The mass ratio of the mixed acid is 1:1.6. After 30 minutes, the temperature is raised to 110°C and hydrolyzed for 6 hours to obtain an amino acid mixture such as figure 2 Shown in A.

[0053] (2) Filtration: After hydrolysis, let it stand for 2 hours, and filter after cooling to obtain amino acid liquid and amino acid residue.

[0054] (3) Activation: Add the filtered amino acid residue to the phosphate rock powder, the mass ratio of the phosphate rock powder to the amino acid residue is 5:1; add an appropriate amount of water (10% of the mass of the phosphate rock powder), and stir for 30 minutes.

[0055] (4) Neutralization: After activation, add lime and magnesium oxide for neutralization. The addition amount of lime and magnesium oxide is 9% of the mass of the amino acid residue.

[...

Embodiment 3

[0060] (1) Hydrolysis: Put the crushed pig hair into the reactor, and then hydrolyze the mixed acid composed of 25wt% hydrochloric acid, 25wt% nitric acid and 40wt% sulfuric acid in a mass ratio of 6:2:2. The pig hair and the mixed acid The mass ratio is 1:2. After 2 hours, the temperature is raised to 120°C and hydrolyzed for 8 hours to obtain an amino acid mixture such as figure 2 Shown in B.

[0061] (2) Filtration: After hydrolysis, let it stand for 6 hours, and filter after cooling to obtain amino acid liquid and amino acid residue.

[0062] (3) Activation: Add the filtered amino acid residue to the phosphate rock powder, the mass ratio of the phosphate rock powder to the amino acid residue is 3:1; add an appropriate amount of water (10% of the mass of the phosphate rock powder), and stir for 30 minutes.

[0063] (4) Neutralization: After activation, add lime and magnesium oxide for neutralization. The addition amount of lime and magnesium oxide is 8% of the mass of the amino a...

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Abstract

The invention discloses an active phosphate fertilizer as well as a preparation method and application thereof, and belongs to the fertilizer industrial field. The active phosphate fertilizer adopts waste animal protein (furs, hairs, skins or horns and the like) as a raw material; the animal protein is hydrolyzed by using mixed acid to obtain amino acid residues, wherein the mixed acid comprises hydrochloric acid, nitric acid and sulfuric acid; the residues are mixed with ground phosphate rock; alkali substances, such as lime, magnesium oxide and the like are added; and materials, such as decomposed coal, kieselguhr and the like are added for modifying; then the materials are turned, composted for several days, dried and smashed to obtain the active phosphate fertilizer. The active phosphate fertilizer has rich contents of organic matters, N, P, Ca and Mg, high contents of water-soluble phosphorus and available phosphorus and reasonable moisture and pH value, and brings convenience to crop absorption and utilization; the preparation technique is simple, has low production cost, and is easy to exert; and the active phosphate fertilizer has the characteristics of soil looseness, increment of granular structures and fertility improvement, and is the high-quality fertilizer in the non-hazardous agriculture.

Description

Technical field [0001] The invention belongs to the field of fertilizer industry, and specifically relates to an active phosphate fertilizer and a preparation method and application thereof. Background technique [0002] Phosphorus is one of the nutrient elements necessary for crop growth and an important material guarantee for agricultural production. If the soil lacks phosphorus severely, it will limit the yield and quality of crops. According to statistics, 43% of agricultural soils in the world are deficient in phosphorus, and my country’s 10.7 billion ha 2 The phosphorus-deficient area in farmland is as high as 67%. In order to promote agricultural production and ensure food supply and safety, a large amount of phosphate fertilizer must be invested. [0003] my country is a country rich in phosphate rock resources. In 2009, my country’s phosphate rock output was 55 million tons, accounting for 35% of the world’s total output, ranking first in the world. However, most of the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05B17/00C05B5/00
Inventor 沈宏傅友强申守营
Owner 深圳市杜高生物新技术有限公司
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