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Phosphate controlled-release fertilizer with sterilizing effect and preparation method thereof

A bactericidal effect and slow-release fertilizer technology, which is applied to organic fertilizers, excretion fertilizers, fertilization devices, etc., can solve the problems of blank production and application of slow-release fertilizers, and few slow-release fertilizers, and achieve excellent chemical stability. The effect of loss and not easy to agglomerate

Inactive Publication Date: 2011-09-21
郑庆云
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are few studies and reports on slow-release fertilizers in my country, and the finalized production and application of slow-release fertilizers are basically blank.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 1. The composition of raw materials in molar percentage is:

[0047] P 2 o 5 47%, K 2 O is 26%, CaO is 6%, MgO is 5%, Fe 2 o 3 5%, MnO 2 4%, CuO 4%, Y 2 o 3 1%, Sm 2 o 3 1%, La 2 o 3 1%.

[0048] 2. Preparation method:

[0049] (1) take each raw material according to the molar percentage of each component;

[0050] (2) Fully mix the raw materials taken;

[0051] (3) Put the mixed mixture into a crucible, then put it into an electric furnace with a furnace temperature of 1000° C., and keep it warm for 60 minutes;

[0052] (4) Pour the melted glass liquid into a tablet press and press into thin slices or pour into cold water;

[0053] (5) Put flake or granular glass together into a ball mill for ball milling;

[0054] (6) Sieve, test and pack the ball-milled glass powder.

[0055] 3. Test results:

[0056]

Embodiment 2

[0058] 1. The composition of raw materials in molar percentage is:

[0059] P 2 o 5 34%, K 2 O is 36%, CaO is 7%, MgO is 5%, Fe 2 o 3 6%, MnO 2 4%, CuO 3%, Y 2 o 3 2%, Sm 2 o 3 2%, La 2 o 3 1%.

[0060] 2. Preparation method:

[0061] (1) take each raw material according to the molar percentage of each component;

[0062] (2) Fully mix the raw materials taken;

[0063] (3) Put the mixed mixture into a crucible, then put it into an electric furnace with a furnace temperature of 1100° C., and keep it warm for 70 minutes;

[0064] (4) Pour the melted glass liquid into a tablet press and press into thin slices or pour into cold water;

[0065] (5) Put flake or granular glass together into a ball mill for ball milling;

[0066] (6) Sieve, test and pack the ball-milled glass powder.

[0067] 3. Test results:

[0068]

Embodiment 3

[0070] 1. The composition of raw materials in molar percentage is:

[0071] P 2 o 5 38%, K 2 O is 32%, CaO is 7%, MgO is 4%, Fe 2 o 3 8%, MnO 2 3%, CuO 4%, Y 2 o 3 1%, Sm 2 o 3 1%, La 2 o 3 2%.

[0072] 2. Preparation method:

[0073] (1) take each raw material according to the molar percentage of each component;

[0074] (2) Fully mix the raw materials taken;

[0075] (3) Put the mixed mixture into a crucible, then put it into an electric furnace with a furnace temperature of 1200 ° C, and keep it warm for 50 minutes;

[0076] (4) Pour the melted glass liquid into a tablet press and press into thin slices or pour into cold water;

[0077] (5) Put flake or granular glass together into a ball mill for ball milling;

[0078] (6) Sieve, test and pack the ball-milled glass powder.

[0079] 3. Test results:

[0080]

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Abstract

The invention relates to a phosphate controlled-release fertilizer with a sterilizing effect and a preparation method thereof. The fertilizer is prepared from the following raw materials by molar percent: 30-60% of P2O5, 15-40% of K2O, 1-15% of CaO, 1-10% of MgO, 1-10% of Fe2O3, 1-10% of MnO2, 1-10% of CuO, 0.1-10% of Y2O3, 0.1-10% of Sm2O3 and 0.1-10% of La2O3, wherein the sum of P2O5 and K2O is 50%-80%, and the sum of Y2O3, Sm2O3 and La2O3 is 2%-7%. The preparation method comprises the following steps: weighing, mixing, smelting, pouring, ball-milling and packaging. The fertilizer has the characteristics of less dosage and high and long fertilizer efficiency, is not easy to run off, cake and deteriorate, and is convenient for application, storage and transportation; and the required release amount is achieved through controlling the dissolution rate and granularity of a glass fertilizer.

Description

【Technical field】 [0001] The invention relates to the field of chemical industry, in particular to a phosphate slow-release fertilizer with bactericidal effect and a preparation method thereof. 【Background technique】 [0002] The most prominent feature of phosphate slow-release fertilizers is long-term slow-release. The chemical fertilizers sold on the market are called quick-acting fertilizers. The longest fertilizer effect is only a few months. During the process, a considerable part enters the groundwater, rivers and lakes, and the so-called dissolution or loss occurs, which not only causes waste, but also pollutes water resources and causes eutrophication. x The production of the gas adds to the planet's greenhouse gases. Slow-release fertilizer is to melt the nitrogen, phosphorus, potassium and trace elements required by plants into the glass in an appropriate proportion. The glass can be made into powder, granule and spherical shape. Tubular, after being applied to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F3/00
CPCY02A40/20
Inventor 郑庆云李辉刘志刚
Owner 郑庆云
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