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Attapulgite-based mineral slow-release fertilizer

A technology of attapulgite and organic fertilizer, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve problems such as non-degradable, secondary pollution, soil compaction, etc., achieve low cost, absorb harmful heavy metals, and improve soil quality.

Inactive Publication Date: 2016-02-03
LANZHOU KUNLUN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Currently popular slow-release fertilizers on the market mainly use technologies such as urease inhibitors, polypeptide agents, urea-formaldehyde, and coatings. Most of them use chemical raw materials, and some materials are not easy to degrade. Long-term application may easily cause soil compaction and secondary pollution. Sustained-release technology is mostly imported from abroad

Method used

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  • Attapulgite-based mineral slow-release fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] An attapulgite-based mineral slow-release organic fertilizer, comprising the following preparation steps:

[0047] A. Raw ore crushing

[0048] Crushing the attapulgite ore, the crushing mesh is 30 mesh-60 mesh;

[0049] B. Acidification treatment

[0050] The concentrated sulfuric acid of mass fraction 98% is added in water and is mixed with the sulfuric acid solution of molar concentration 1mol / L, adds sulfuric acid solution in the attapulgite ore broken in step A, and acidification process makes attapulgite clay for 4 hours;

[0051] C. Drying and sieving

[0052] Airing the acidified attapulgite clay, drying to reduce the water content of the attapulgite clay to 15%, then crushing and sieving to obtain attapulgite powder, the mesh size of the attapulgite is 100-150 mesh;

[0053] D. Baking

[0054] Send the screened attapulgite powder into a roasting furnace for roasting, the roasting temperature is controlled at 300°C, and the roasting time is 45 minutes;

[005...

Embodiment 2

[0058] An attapulgite-based mineral slow-release organic fertilizer, comprising the following preparation steps:

[0059] A. Raw ore crushing

[0060] Crushing the attapulgite ore, the crushing mesh is 30 mesh-60 mesh;

[0061] B. Acidification treatment

[0062] The concentrated sulfuric acid of mass fraction 98% is added in water and is mixed with the sulfuric acid solution of molar concentration 2mol / L, adds sulfuric acid solution in the attapulgite ore broken in step A, and acidification process makes attapulgite clay for 4 hours;

[0063] C. Drying and sieving

[0064] Airing the acidified attapulgite clay, drying to reduce the water content of the attapulgite clay to 15%, then crushing and sieving to obtain attapulgite powder, the mesh size of the attapulgite is 100-150 mesh;

[0065] D. Baking

[0066] Send the screened attapulgite powder into a roasting furnace for roasting, the roasting temperature is controlled at 360°C, and the roasting time is 60 minutes;

[0...

Embodiment 3

[0070] An attapulgite-based mineral slow-release organic fertilizer, comprising the following preparation steps:

[0071] A. Raw ore crushing

[0072] Crushing the attapulgite ore, the crushing mesh is 30 mesh-60 mesh;

[0073] B. Acidification treatment

[0074] The concentrated sulfuric acid of mass fraction 98% is added in water and is mixed with the sulfuric acid solution of molar concentration 3mol / L, adds sulfuric acid solution in the attapulgite ore broken in step A, and acidification process makes attapulgite clay for 4 hours;

[0075] C. Drying and sieving

[0076] Airing the acidified attapulgite clay, drying to reduce the water content of the attapulgite clay to 15%, then crushing and sieving to obtain attapulgite powder, the mesh size of the attapulgite is 100-150 mesh;

[0077] D. Baking

[0078] Send the screened attapulgite powder into a roasting furnace for roasting, the roasting temperature is controlled at 360°C, and the roasting time is 120 minutes;

[...

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Abstract

The invention belongs to the technical field of a fertilizer, and more specifically relates to a biological organic fertilizer having slow release effect and a mineral element supplement function, and the biological organic fertilizer is prepared by poultry manure and attapulgite ore. The attapulgite can use own surface activity, adsorptivity, catalysis performance, filtering effect, ion exchange effect, complexation effect and electrostatic interaction, a soil pH value can be adjusted by two items, and the attapulgite can provides appropriate growth environment for crops. The attapulgite can change physical and chemical properties of the soil, reduces soil unit weight, promotes formation of a soil gel state, enhances soil permeability, absorbs harmful heavy metals in the soil, and inhibits insect disease; beneficial elements in the soil can be converted through chelating effect, nutrition balance is reached, crop growth is cooperated, output is increased, and agricultural product quality is improved. Under a same application amount of the fertilizer, the growth index of crops planted by the attapulgite-based mineral slow-release fertilizer is obviously higher than that of the crops planted by common fertilizers, and yield is increased by more than 17%.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a bio-organic fertilizer prepared by using poultry manure and attapulgite ore, which has a slow-release effect and mineral element supplementation function. Background technique [0002] In recent years, with the improvement of people's production level, my country's livestock and poultry breeding industry has made great progress, among which the modern poultry breeding industry has developed the most rapidly. The development of intensive and large-scale poultry farming has brought a large amount of poultry manure, most of which are applied to farmland without harmless treatment, which often causes the occurrence and spread of human and livestock diseases and pests. Long-term application is also prone to loss of nutrients. [0003] At present, the rise of chemical agriculture has led to long-term and unreasonable large-scale use of inorganic chemical fertilizers,...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05G3/00C05G3/80
Inventor 陶玲任珺赵雅琼缑栋栋李伊娜
Owner LANZHOU KUNLUN ENVIRONMENTAL PROTECTION TECH
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