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Method for producing active phosphate fertilizer by using by-product fluosilicic acid

A fluosilicic acid and active technology, which is applied in the field of fertilizer processing and manufacturing, can solve the problems of high phosphate rock grade requirements and no jumping out, and achieve the effects of low cost, moderate release speed and simple production process

Inactive Publication Date: 2012-11-28
葛洲坝石门特种水泥有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Patent ZL 00117350.2 proposes a production method of acid-saving and high-efficiency organic phosphate fertilizer, but its process and method still do not jump out of the traditional phosphate fertilizer production. The problems in the above patent are It still exists in this patent, and the grade requirements of this technology for phosphate rock are still very high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment one, use containing P 2 o 5 The steps to produce active phosphate fertilizer are as follows:

[0018] (1) Grinding and crushing low-grade phosphate rock in an air-swept mill to prepare 5 tons of phosphate rock powder with a mesh size of 80-200;

[0019] (2) Send the prepared phosphate rock powder into the roller mixer, add 0.1 ton of water while stirring and grinding, and spray the water evenly through the atomizing nozzle when it is added to the wheel roller mixer; Add 0.5 tons of fluosilicic acid with a concentration of 22% through the atomizing nozzle; finally add 0.25 tons of activator, and spray it evenly through the atomizing nozzle like water when adding, and then continuously turn it on the phosphate rock powder; continue to grind In the wheel mixer, the above materials are rolled, mixed, homogenized, and crushed, and about 5.8 tons of active phosphate fertilizer can be obtained after 10 minutes; the active agent one is obtained by mixing lignin wi...

Embodiment 2

[0022] Embodiment two, use containing P 2 o 5 The steps to produce active phosphate fertilizer are as follows:

[0023] (1) Grinding and crushing low-grade phosphate rock in an air-swept mill to prepare 5 tons of phosphate rock powder with a mesh size of 80-200;

[0024] (2) Send the prepared phosphate rock powder into the roller mixer, and add 0.11 tons of water while stirring and grinding. When the water is added to the roller mixer, it is sprayed evenly through the atomizing nozzle; Add 0.6 tons of fluosilicic acid with a concentration of 22% to the mineral powder through the atomizing nozzle; finally add 0.15 tons of activator II and 0.1 tons of activator III. Powder; continue to roll, mix, homogenize and crush the above materials in the roller mixer, and obtain about 5.8 tons of active phosphate fertilizer in 10 minutes. Wherein the preparation of active agent two is to be 4.0% HNO by combining lignin and concentration 3 , according to the solid-liquid ratio of 1:10, ...

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Abstract

The invention relates to a method for producing an active phosphate fertilizer by using by-product fluosilicic acid, which comprises the following steps: 1) preparing rock phosphate powder: grinding and crushing the low grade phosphate rock in an air swept mill, preparing the rock phosphate powder with granularity of 80-200 meshes; and 2) mixing: sending the prepared rock phosphate powder in a muller mixer, stirring and grinding, adding water through an atomization nozzle; then adding fluosilicic acid with concentration of more than 20% in the humidified rock phosphate powder through the atomization nozzle; adding an activator through the atomization nozzle finally; continuously rolling, mixing, homogenizing and crushing the materials in the muller mixer to obtain the finished product. The method for producing the active phosphate fertilizer by using by-product fluosilicic acid has the advantages that 1) the original low grade phosphate rock with non-industrial value or less value can be utilized; and 2) the method uses an appropriate solid liquid ratio of the rock phosphate powder and the activator, the production process is simple, the investment is small, the aging process of a traditional phosphate fertilizer production is not required, the uncontrollable discharge of fluorine containing gas during the production process is not generated, and no pollution is generated.

Description

technical field [0001] The invention relates to a method for producing active phosphate fertilizer by using fluosilicic acid, a by-product of the phosphate fertilizer industry, and belongs to the field of fertilizer processing and manufacturing. Background technique [0002] Traditional phosphate fertilizer production can be divided into two types of technology systems. One is to produce water-soluble phosphate fertilizers by acid decomposition technology, such as superphosphate, double superphosphate, nitrate phosphate fertilizer, ammonium phosphate, etc., and its output accounts for more than 90% of the total phosphate fertilizer output; The other is to produce citrate-soluble phosphate fertilizers by thermal decomposition technology, such as calcium magnesium phosphate fertilizer, steel slag phosphate fertilizer, defluorinated phosphate fertilizer, etc. The former dissolves quickly after being applied to the soil, and with the rainwater entering the water body, it is one ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
Inventor 唐远财覃爱平候益红
Owner 葛洲坝石门特种水泥有限公司
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