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Method for preparing ammonium magnesium phosphate monohydrate slow-release fertilizer

A kind of technology of magnesium ammonium phosphate water and slow-acting fertilizer

Inactive Publication Date: 2008-01-09
TIANJIN HANGU DISTRICT FUXIANG FERTILIZER PROCESSING FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the early planting and production of melons, vegetables, and flowers, farmyard manure is often used, which cannot meet the needs of large-scale agricultural production for large amounts of fertilizers and high crop yields
Commonly used fertilizers do not have the function of improving the quality of melons, vegetables, and flowers, and cannot meet people's needs for better color, aroma, and taste of melons, vegetables, and flowers on the basis of maintaining their original characteristics. Can not meet environmental protection requirements

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0006] Embodiment: a kind of preparation method of magnesium ammonium phosphate slow-acting fertilizer, take the production of 1500kgl magnesium ammonium phosphate as an example, magnesium hydroxide 90% purity 640kg, monoammonium phosphate 1150kg, water 180kg, the magnesium hydroxide of 640kg90% purity Put 1150kg of monoammonium phosphate into the reaction kettle, add 2000kg of water, heat to 90°C, and stir for 1 hour to generate ammonium magnesium phosphate 6 hydrate, put the ammonium magnesium phosphate 6 hydrate into a centrifugal precipitation equipment for centrifugal separation and precipitation, and then Dry it with hot air at 105°C for 3 hours to become 1550kgl water magnesium ammonium phosphate slow-acting fertilizer.

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PUM

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Abstract

Production of ammonium magnesium phosphate monohydrate is carried out by putting monohydrate ammonium-magnesium phosphate 1500 kg, 90% magnesium hydrate 640 kg, and mono-ammonium phosphate 1150 kg into reactor, then adding into water 2000 kg, heating to 90 deg. C, agitating for 1 hr to generate ammonium-magnesium phosphate hexahydrate, centrifugal separating while depositing, drying by hot air at 105 deg. C for 3 hrs to obtain slow-release fertilizer 1550 kg. It has less labor strength and no environmental pollution.

Description

technical field [0001] The invention relates to a preparation method of magnesium ammonium phosphate monohydrate slow-acting fertilizer. Background technique [0002] During the early planting and production of melons, vegetables, and flowers, farmyard manure was often used, which could not meet the needs of large-scale agricultural production for large amounts of fertilizers and high crop yields. Commonly used fertilizers do not have the function of improving the quality of melons, vegetables, and flowers, and cannot meet people's needs for better color, aroma, and taste of melons, vegetables, and flowers on the basis of maintaining their original characteristics. Can not meet environmental protection requirements. Contents of the invention [0003] The object of the present invention is to overcome above-mentioned defective, a kind of magnesium ammonium phosphate monohydrate slow-acting fertilizer preparation method is provided. [0004] The technical scheme of the pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05B17/00C01B25/45
Inventor 杜云福
Owner TIANJIN HANGU DISTRICT FUXIANG FERTILIZER PROCESSING FACTORY
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