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Zeolite slow release compound fertilizer and preparation method thereof

A technology of slow-release compound fertilizer and zeolite, applied in fertilization equipment, fertilizer mixture, application, etc., can solve the problems of short fertilizer effect period, low fertilizer utilization rate, easy leaching of nutrients, etc., and achieve simple operation, high added value, low cost effect

Active Publication Date: 2014-09-17
厦门安国腾新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a zeolite slow-release compound fertilizer and its preparation method, aiming to solve the problems of short fertilizer effect period, easy leaching and volatilization of nutrients in traditional fertilizers widely used at present, which lead to low utilization rate of fertilizers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Mix 1kg potassium feldspar and 1.3kg anhydrous sodium carbonate evenly, then calcinate at 800°C for 2h to obtain light blue loose powder clinker;

[0033](2) Mix 60g clinker, 6g sodium hydroxide, and 365g distilled water evenly, age at room temperature for 24 hours, add 5% 13X molecular sieve powder (purchased from Huiying Chemicals (Quanzhou) Co., Ltd.) as seed crystals, and react in hydrothermal reaction After hydrothermal crystallization at 95°C for 6 hours in a kettle, an X-type zeolite molecular sieve was obtained.

Embodiment 2

[0035] (1) Mix 1kg potassium feldspar and 1.3kg anhydrous sodium carbonate evenly, then calcinate at 800°C for 2h to obtain light blue loose powder clinker;

[0036] (2) Mix 35g of clinker, 18.5g of sodium silicate, and 408g of distilled water evenly, age at room temperature for 24 hours, and conduct hydrothermal crystallization at 95°C for 7 hours in a hydrothermal reaction kettle to obtain a Y-type zeolite molecular sieve.

Embodiment 3

[0038] (1) Mix 1kg potassium feldspar and 1.3kg anhydrous sodium carbonate evenly, then calcinate at 800°C for 2h to obtain light blue loose powder clinker;

[0039] (2) Mix 40g of clinker, 20g of sodium hydroxide, 17g of sodium metaaluminate, and 425g of distilled water evenly, age for 12 hours at room temperature, and conduct hydrothermal crystallization at 90°C for 7 hours in a hydrothermal reaction kettle to obtain a type A zeolite molecular sieve .

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PUM

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Abstract

The invention provides zeolite slow release compound fertilizer and a preparation method thereof. Different types of zeolite molecular sieves prepared by selecting natural mineral potassium feldspar fine powder as a raw material are used as slow release carriers. The preparation method comprises the steps of mixing 75-85 parts of fertilizer which can provide a nitrogen source, a phosphorus source and a potassium source with 15-25 parts of zeolite molecular sieves, uniformly grinding, so that the compound fertilizer is obtained; mixing the obtained compound fertilizer with 8-13 parts of a pelletizing bonding agent, pelletizing in a pelletizing machine, and drying granules, so that the zeolite slow release compound fertilizer is obtained. The zeolite slow release compound fertilizer has the advantages that cost is low, additional value is high, the synthesized molecular sieves can selectively absorb fertilizer nutrients, a reaction is carried out on the absorbed nutrients in a porous channel, and slow release control on the nutrients is effectively realized; besides, the nutrients of the zeolite slow release compound fertilizer can be recycled before being completely lost after the zeolite slow release compound fertilizer is applied for a period of time, after regeneration treatment is carried out, a sample still has a slow release effect, so that the zeolite slow release compound fertilizer has the advantages of simple operation and cyclic utilization.

Description

technical field [0001] The invention belongs to the technical field of compound fertilizer preparation, and in particular relates to a zeolite slow-release compound fertilizer and a preparation method thereof. Background technique [0002] In recent decades, there are still some disadvantages in the production and utilization of chemical fertilizers in my country, which restrict the sustainable development of agriculture to a certain extent. Due to the lack of scientific and rational use of chemical fertilizers, some people apply a single variety of chemical fertilizers or one-sidedly believe that more fertilizers are needed to increase production, resulting in an increase in the amount of fertilization every year. my country's cultivated land area accounts for only 7% of the world's total, but its chemical fertilizer consumption accounts for 100% of the world's total. More than 1 / 3 of the world's consumption, but the output has not achieved the expected effect, and even has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/08C05G3/90
Inventor 颜桂炀刘伟郑柳萍许美真梁志瑜
Owner 厦门安国腾新材料有限公司