Activated calcium magnesium phosphate fertilizer and preparation method thereof

A calcium-magnesium-phosphate fertilizer, activated calcium technology, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problems of acidity, high water solubility, etc., to improve crop quality, increase the utilization rate of phosphorus, obvious environmental benefits and economical benefits effect of benefit

Inactive Publication Date: 2010-11-24
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although there are currently some methods to promote the release of phosphorus in insoluble phosphates, calcium magnesium phosphate fertilizer, a special phosphate fertilizer, is alkaline, low in water solubility, and contains magnesium and high ca

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The production process of activated calcium magnesium phosphate fertilizer is as follows:

[0032] (1) Add acid lignin activator to the calcium magnesium phosphate fertilizer, the mass ratio of the amount added to the calcium magnesium phosphate fertilizer is 0.05:1, add an appropriate amount of water until the water content of the mixture is 15%, and grind in a grinder for about 0.5 hours;

[0033] (2) Pour out the slurry from the grinder and leave it for 3 hours;

[0034] (3) Drying under normal temperature conditions, the moisture content of the activated calcium magnesium phosphate fertilizer is 1.5%.

Embodiment 2

[0036] The production process of activated calcium magnesium phosphate fertilizer is produced by using calcium magnesium phosphate fertilizer that meets the national standard (GB20412-2006):

[0037] (1) Add furfural slag activator in calcium magnesium phosphate fertilizer, the mass ratio of addition and calcium magnesium phosphate fertilizer is 0.15: 1, add appropriate amount of water until the water content of mixture is 20%, grind about 1 hour in grinder;

[0038] (2) Pour out the slurry from the grinder and leave it for 5 hours;

[0039] (3) drying at 60° C., the moisture content of the activated calcium magnesium phosphate fertilizer is 0.5%.

Embodiment 3

[0041] The production process of activated calcium magnesium phosphate fertilizer is produced by using calcium magnesium phosphate fertilizer that meets the national standard (GB20412-2006):

[0042] (1) Add monosodium glutamate waste liquid activator to calcium magnesium phosphate fertilizer, the mass ratio of adding amount and calcium magnesium phosphate fertilizer is 0.15: 1, add appropriate amount of water until the water content of mixture is 30%, grind in grinder for about 1 hour;

[0043] (2) Pour out the slurry from the grinder and leave it for 1 hour;

[0044] (3) drying at 80° C., the moisture content of the activated calcium magnesium phosphate fertilizer is 0.3%.

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PUM

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Abstract

The invention belongs to the field of chemical production, and relates to an activated calcium magnesium phosphate fertilizer and a preparation method thereof. The activated calcium magnesium phosphate fertilizer is prepared from a calcium magnesium phosphate fertilizer and an organic activating agent. The organic activating agent is one or a mixture of more of lignin, acid lignin, sodium lignin, alcohol waste liquor, monosodium waste liquor, monosodium waste sludge, acid sludge, furfural sludge, beer filter mud, sugar-refinery filter mud and weathered coal. The activated calcium magnesium phosphate fertilizer is prepared by adding the organic activating agent into the calcium magnesium phosphate fertilizer according to a specified ratio, and grinding, placing and drying the mixture. Phosphorus in the activated calcium magnesium phosphate fertilizer is in an activated state, the activated calcium magnesium phosphate fertilizer can be fast and stably released when applied to the soil, can reduce fixation of the soil, and has fast and durable fertilizer effect, so that the utilization rate of the phosphorus is obviously improved. Meanwhile, the activated calcium magnesium phosphate fertilizer has the advantages of simple production process, low production cost, high and stable yield, and contribution to large-scale production and application. Compound fertilizer plants or newly-built phosphate fertilizer plants can produce the activated calcium magnesium phosphate fertilizer under the conditions of small equipment investment.

Description

technical field [0001] The invention belongs to the field of chemical production and relates to a fertilizer and a preparation method thereof, in particular to an activated calcium magnesium phosphorus and a preparation method thereof. Background technique [0002] In my country, phosphate fertilizer occupies an important position in the field of chemical fertilizers. About 2 / 3 of domestic arable land is severely deficient in phosphorus, and more than 80% of my country's phosphate rock resources are used for phosphate fertilizer production. How to efficiently use the medium and low-grade phosphate rock resources that account for the vast majority of the total is related to the overall strategy of my country's phosphorus resources and agriculture. sustainable development. According to the "Eleventh Five-Year" development plan of my country's phosphate fertilizer industry, this year my country's phosphate fertilizer output will reach 12 million tons (P 2 o 5 ). Although the...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 刘可星廖宗文王艳代明
Owner SOUTH CHINA AGRI UNIV
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