Method for preparing ultrafine activated phosphorusore compound fertilizer

A compound fertilizer and phosphate rock technology, applied in phosphate fertilizers, fertilization devices, fertilizer mixtures, etc., can solve the problems of complex process, long production cycle, unfavorable industrial production, etc., and achieve a short preparation process, low production cost, stable and long-term fertilizer efficiency. Effect

Inactive Publication Date: 2007-03-28
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production cycle of this phosphate rock powder fertilizer is longer and the process is more complicated, which is not conducive to industrial production

Method used

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  • Method for preparing ultrafine activated phosphorusore compound fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Raw materials are medium and low-grade phosphate rocks such as Yunnan phosphate rock, and the raw phosphate rock is crushed into coarse phosphate rock powder (100% through 80 mesh sieve) with a crusher and a universal mill without beneficiation. . Use a ball mill to pulverize the coarse phosphate rock powder until D90 is 21um, mix 270kg (90%) phosphate rock powder with 30kg (10%) humic acid, and then add kg (5%) of phosphorus-solubilizing microorganisms. The mixed materials were added to the stirring mill for processing, the rotating speed of the stirring mill was 300 rpm, and the processing time was 30 minutes. Then concentrate and granulate to obtain the phosphate rock powder fertilizer product.

Embodiment 2

[0030] Raw materials are medium and low-grade phosphate rocks such as Yunnan phosphate rock, and the raw phosphate rock is crushed into coarse phosphate rock powder (100% through 80 mesh sieve) with a crusher and a universal mill without beneficiation. . Use a vibrating mill to pulverize the coarse phosphate rock powder until D90 is 17um, mix 225kg (75%) of phosphate rock powder with 60kg (20%) of humic acid, then add 12kg (4%) of zeolite and 3kg (1%) of phosphorus-solubilizing microorganisms . The mixed material is added to a vibrating mill for processing, the rotating speed of the vibrating mill is 100 rpm, and the processing time is 5 hours. Then concentrate and granulate to obtain the phosphate rock powder fertilizer product.

Embodiment 3

[0032] Raw materials are medium and low-grade phosphate rocks such as Yunnan phosphate rock, and the raw phosphate rock is crushed into coarse phosphate rock powder (100% through 80 mesh sieve) with a crusher and a universal mill without beneficiation. . Use a vibrating mill to pulverize the coarse phosphate rock powder until D90 is 17um, mix 285kg (95%) of phosphate rock powder with 14.7kg (4.9%) of humic acid, and then add 0.3kg (0.1%) of zeolite. The mixed material is added to a vibrating mill for processing, the rotating speed of the vibrating mill is 300 rpm, and the processing time is 0.2 hours. Then concentrate and granulate to obtain the phosphate rock powder fertilizer product.

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Abstract

The invention is an ultrafine activated phosphorite compound fertilizer preparing method, crushing raw material into coarse powder by crusher and universal mill, and then crushing the coarse powder into ultrafine phosphorite powder as premix by ball mill or vibration mill; adding additive and humic acid in the premix and making high energy activation treatment by blending mill or vibration mill, making concentrated prilling and making the product. And the invention mechanically mills phosphorite by high input energy, improves chemical activity of apatite in phosphorite by mechano-chemical activation, and improves the releast- sustained speed of phosphor compounds in soil. And the prepared compound fertilizer has fast effect, long-time stability, and soil improving effect. And the invention is a good phosphorite compound fertilizer preparing method.

Description

technical field [0001] The invention relates to a preparation method of ultra-fine activated phosphate rock compound fertilizer, which comprises a method of ultra-fine crushing of phosphate rock powder and a mixing mechanical activation process, and belongs to the technical field of preparation methods of chemical compound fertilizers. technical background [0002] In recent years, the global reserves of high-grade phosphate rock resources have declined sharply, the grade of phosphate rock used as a raw material for phosphate fertilizer has decreased year by year, and the difficulty of phosphate rock beneficiation has increased. Phosphorus is an indispensable and important element for human beings. How to efficiently use the existing phosphate rock resources, especially how to reasonably supplement phosphorus fertilizers for crops, has become a concern of all countries in the world. my country's phosphate rock resources are mainly medium and low-grade phosphate rock, less hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00C05B13/02
Inventor 盖国胜孟繁荣杨玉芬
Owner TSINGHUA UNIV
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