Water-soluble phosphate rock powder and preparation method thereof

A phosphate rock powder, water-soluble technology, applied in the field of phosphate rock powder, can solve problems such as poor utilization of phosphorus elements, lower utilization rate of phosphate rock, complex process conditions, etc., to achieve water-soluble phosphorus content and soil available phosphorus content Increase, good absorption, high chemical activity effect

Inactive Publication Date: 2014-09-24
云南新正达磷化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above patented technology is to turn phosphate ore and other substances into soluble phosphate through acid treatment and other processes, which belongs to the chemical extraction method, which requires high extraction technology and production equipment of low-grade phosphate ore, is dangerous, and is easy to pollute the environment.
[0008] To sum up, the phosphate rock powder used in agriculture in my country is mainly processed through chemical extraction, refinement, adsorption modification and other processes of phosphate rock powder. Chemical extraction can obtain phosphate fertilizer products with good water solubility, but the process The conditions are complex, and the production process is easy to cause pollution to the environment; the refining and adsorption modification process is relatively simple, but the release rate of phosphorus is low and the release time is long, and plants cannot use phosphorus well within a certain growth period, reducing the The utilization rate of phosphate rock

Method used

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  • Water-soluble phosphate rock powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of water-soluble phosphate rock powder, its component is as follows, all by weight:

[0039] Fluorapatite powder: 100 parts,

[0040] Pentaerythritol esters: 5 parts,

[0041] Polyoxyethylene heptylamine: 5 parts,

[0042] Alkylphenol polyoxyethylene ether formaldehyde condensate: 5 parts

[0043] Its preparation method is as follows:

[0044] (1) Send 100 parts by weight of fluorapatite powder into the crushing chamber, and blow nitrogen gas (N 2 ), keep the indoor pressure at 400~500KPa, and use the gas phase pulverization method to refine the phosphate rock powder to a particle size of ≤10μm;

[0045] (2) Send the miniaturized phosphate rock powder obtained in step (1) into the pore-forming chamber, use the Nd:YAG laser drilling method, use the laser beam excited by diode pulses, and the laser power density is 800W / cm 2 , the drilling speed is 1000 holes / second, and the fine particles of phosphate rock powder are made into particles with a pore size of...

Embodiment 2

[0048] A kind of water-soluble phosphate rock powder, its component is as follows, all by weight:

[0049] Fluorapatite powder: 95 parts,

[0050] Glycerol polyoxyethylene ether: 10 parts,

[0051] Naphthalenesulfonate formaldehyde condensate: 5 parts,

[0052] Its preparation method is as follows:

[0053] (1) Send 95 parts by weight of fluorapatite powder into the crushing chamber, and blow nitrogen gas (N 2 ), keep the indoor pressure at 400~500KPa, and use the gas phase pulverization method to refine the phosphate rock powder to a particle size of ≤10μm;

[0054] (2) Send the miniaturized phosphate rock powder obtained in step (1) into the pore-forming chamber, use the Nd:YAG laser drilling method, use the laser beam excited by diode pulses, and the laser power density is 800W / cm 2 , the drilling speed is 1000 holes / second, and the fine particles of phosphate rock powder are made into particles with a pore size of 18-25nm porous structure;

[0055] (3), 10 parts of mo...

Embodiment 3

[0057] A kind of water-soluble phosphate rock powder, its component is as follows, all by weight:

[0058] Fluorapatite powder: 92 parts,

[0059] Polyoxyethylene hexyl alcohol amide: 7 parts,

[0060] Sodium methylene bis-naphthalene sulfonate: 5 parts,

[0061] Its preparation method is as follows:

[0062] (1) Send 92 parts by weight of fluorapatite powder into the crushing chamber, and blow nitrogen gas (N 2 ), keep the indoor pressure at 400~500KPa, and use the gas phase pulverization method to refine the phosphate rock powder to a particle size of ≤10μm;

[0063] (2) Send the micronized phosphate rock powder obtained in step (1) into the pore-forming chamber, use the Nd:YAG laser drilling method, and use the laser beam excited by diode pulses, and the laser power density is 1000W / cm 2 , the drilling speed is 1100 holes / second, and the fine particles of phosphate rock powder are made into particles with a pore size of 18-25nm porous structure;

[0064] (3), 7 parts o...

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Abstract

The invention discloses water-soluble phosphate rock powder and a preparation method thereof. The water-soluble phosphate rock powder is porous hydrophilic particles and can be quickly dispersed in water, phosphorus and microelements in the water-soluble phosphate rock powder can be well dissolved in the water, and the water-soluble phosphate rock powder can serve as a water-soluble phosphate fertilizer. After the water-soluble phosphate rock powder is applied to soil, the area of contact with microorganisms in the soil can be enlarged due to porous structures, the release time of phosphorus in the phosphorus rock powder in the soil is remarkably shortened, nutrients are provided for crops to promote growth of the crops, and the quality of the crops can be improved due to the microelements in the phosphorus rock powder. According to the preparation method, a laser drilling method is adopted, a production process is simple, and an environmental can not be polluted; the phosphorus rock powder is water-soluble and porous, so that the dissolving-out efficiency of phosphorus in the phosphorus rock powder is improved and the utilization rate of the phosphorus rock powder is increased; the preparation method has wide market prospects.

Description

technical field [0001] The invention relates to the field of deep processing of phosphate rock powder, in particular to a water-soluble phosphate rock powder that can be used for water-soluble fertilizers. Background technique [0002] Minerals are the material basis for human survival and development, and an important material guarantee for sustainable economic and social development, among which phosphate rock is an important strategic resource for our country. my country's phosphate rock resources are abundant but not rich, and there are many low-grade and medium-grade phosphate rocks. There are great differences in the ore quality and selectivity of phosphate rocks. With the continuous development and utilization of resources, rich phosphate rock and easy-to-select phosphate rock resources are becoming less and less, while the beneficiation process for low- and medium-grade phosphate rock is hindered. [0003] In addition to about 10% phosphorus, low-grade phosphate roc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05B17/00
Inventor 陈庆李紫薇张芝媛
Owner 云南新正达磷化工有限公司
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