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Granular Ca-Mg-P fertilizer

A calcium-magnesium-phosphate fertilizer and granular technology is applied in the field of granular calcium-magnesium phosphate fertilizer, which can solve the problems of changing the soil composition structure and change, and achieve the effects of long-lasting fertilizer effect, convenient use and uniform particles.

Inactive Publication Date: 2003-10-29
黄雄强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can also prepare granular phosphate fertilizers, due to the addition of more additives, the content of various components in the original fertilizer has been changed. In addition, the composition structure of the soil has also been changed during application, so there are still some problems. lack of
In addition, there is no report on an ideal granular calcium magnesium phosphate fertilizer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Recipe: Calcium magnesium phosphate fertilizer 1000 kg

[0014] Mixed magnesium sulfate solution 110 kg

[0015] Preparation method:

[0016] 1. Stir 15-40 kg of magnesium sulfate in 100 kg of water evenly, heat to dissolve it, check the relative specific gravity at 50-60°C, and obtain a mixed magnesium sulfate solution for later use when the Baume degree is 13-20;

[0017] 2. Put 1,000 kg of calcium magnesium phosphate fertilizer into the granulation equipment, stir evenly, spray 110 kg of mixed magnesium sulfate solution, and granulate the two together in the granulation equipment, dry at 80-200°C, take out and sieve after cooling The granular calcium magnesium phosphate fertilizer can be obtained by subpackaging.

Embodiment 2

[0019] Recipe: Calcium magnesium phosphate fertilizer 1000 kg

[0020] Mixed magnesium sulfate solution 150 kg

[0021] Preparation method:

[0022] 1. Magnesium sulfate 15-40 kg, stir evenly in 100 kg of water, heat to dissolve, check the relative specific gravity at 50-60 °C, add 0.2-1.5 kg of carboxymethyl cellulose when the Baume degree is 15-19 , make it dissolve to obtain mixed magnesium sulfate solution for subsequent use;

[0023] 2. Put 1,000 kg of calcium magnesium phosphate fertilizer into the granulation equipment, stir evenly, spray 150 kg of mixed magnesium sulfate solution, and granulate the two together in the granulation equipment, dry at 80-200 ° C, take out and sieve after cooling The granular calcium magnesium phosphate fertilizer can be obtained by subpackaging.

Embodiment 3

[0025] Recipe: Calcium magnesium phosphate fertilizer 1000 kg

[0026] Mixed magnesium sulfate solution 120 kg

[0027] Preparation method:

[0028] 1. Magnesium sulfate 15-40 catties, stir evenly in 100 kg of water, heat to dissolve, check the relative specific gravity at 50-60 °C, add 0.2-1.5 kg of carboxymethyl cellulose when the Baume degree is 15-19 , make it dissolve to obtain mixed magnesium sulfate solution for subsequent use;

[0029] 2. Put 1,000 kg of calcium magnesium phosphate fertilizer into the granulation equipment, stir evenly, spray 130 kg of mixed magnesium sulfate solution, and granulate the two together in the granulation equipment, dry at 80-200 ° C, take out and sieve after cooling The granular calcium magnesium phosphate fertilizer can be obtained by subpackaging.

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Abstract

A granular CaMgP fertilizer is prepared from ordinary CaMgP fertilizer through mixing it with the solution of magnesium sulfate and granulating. Its advantages are easy dissolving in water, easily releasing its active components, easy being assimilated, and durable fertility.

Description

1. Technical field [0001] The invention relates to a granular calcium magnesium phosphate fertilizer. 2. Background technology [0002] Calcium magnesium phosphate fertilizer is a commonly used chemical fertilizer, widely used, and its commercial properties are in the form of powder, so the dust will be scattered with the wind when applied, causing environmental pollution, fertilizer loss and waste, and increased labor intensity. The current solution is to add water before application or mix it with wet materials into granules before use. This method is obviously not an ideal method. The granules made by this method are easy to agglomerate after drying, the ingredients are not easy to release, the contents of various ingredients in the fertilizer are not accurate, and the quality standards are difficult to grasp. The Chinese invention patent application with the publication number of 1067045 discloses a granular phosphate fertilizer and its preparation method. Its main tech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G5/00
Inventor 黄雄强
Owner 黄雄强
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