Soil conditioner prepared by activating phosphate rock tailings by using organic/inorganic activators and preparation method thereof

A technology of inorganic activator and soil conditioner, applied in fertilizer mixtures, fertilization devices, applications, etc., to achieve the effects of slowing down phytotoxicity, alleviating pollution, and enhancing stress resistance

Active Publication Date: 2015-09-02
KINGENTA NORSTERRA CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The activator used in this patent can activate the phosphorus fertilizer in the soil, but before application, the available phosphorus content of the fertilizer does not change
At present, there is no public report on the direct activation of phosphate rock tailings powder

Method used

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  • Soil conditioner prepared by activating phosphate rock tailings by using organic/inorganic activators and preparation method thereof
  • Soil conditioner prepared by activating phosphate rock tailings by using organic/inorganic activators and preparation method thereof
  • Soil conditioner prepared by activating phosphate rock tailings by using organic/inorganic activators and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 1. Source of raw materials:

[0044] Phosphate ore tailings: Guizhou Wengfu Group flotation mine tailings, with a total phosphorus content of 8.4wt%;

[0045] Lignite: Shanxi Lvliang lignite raw powder, total acid content (dry basis) 50wt%;

[0046] DA-6 (diethylhexanoate): commercially available, with a purity of 99%

[0047] A soil conditioner for activating phosphate rock tailings with organic and inorganic activators, the composition of which is as follows in parts by weight of raw materials:

[0048] 75 parts of phosphate rock tailings powder, 20 parts of lignite, 5 parts of urea and ammonium bicarbonate; 0.1 part of diethyl diethyl ethyl DA-6. The mass ratio of urea to ammonium bicarbonate is 1:1.

[0049] 2. Preparation of soil conditioner:

[0050] (1) Pulverizing the phosphate rock tailings to obtain the phosphate rock tailings powder, mixing and grinding the phosphate rock tailings powder and lignite for 5 minutes according to the proportioning ratio,

[...

Embodiment 2

[0057] 1. Source of raw materials:

[0058] Phosphate ore tailings: flotation mine tailings of Guizhou Wengfu Group, with a phosphorus content of 8.5wt%;

[0059] Weathered coal: Inner Mongolia Wuhai weathered coal raw powder, total acid content (dry basis) 55.8%;

[0060] DA-6 (diethylhexanoate): commercially available, with a purity of 99%

[0061] A soil conditioner for activating phosphate rock tailings with organic and inorganic activators, the composition of which is as follows in parts by weight of raw materials:

[0062] 85 parts of phosphate rock tailings powder, 20 parts of weathered coal, 5 parts of urea and ammonium bicarbonate; 0.07 parts of diethyl diethylhexanoate DA-6. The mass ratio of urea to ammonium bicarbonate is 1:1.

[0063] 2. Preparation of soil conditioner:

[0064] (1) Pulverize the phosphate rock tailings to obtain the phosphate rock tailings powder, mix and grind the phosphate rock tailings powder and weathered coal for 10 minutes according to ...

Embodiment 3

[0071] 1. Source of raw materials:

[0072] Phosphate ore tailings: flotation mine tailings from Yunnan Zhongzheng Company, with a phosphorus content of 7.5wt%;

[0073] Humic acid and weathered coal: commercially available humic acid, raw powder of weathered coal in Hami, Xinjiang, total acid content (dry basis) 61.8wt%;

[0074] DA-6 (diethylhexanoate): market purchase, purity 99%

[0075] A soil conditioner for activating phosphate rock tailings with organic and inorganic activators, the composition of which is as follows in parts by weight of raw materials:

[0076] 70 parts of phosphate rock tailings powder, 20 parts of humic acid and weathered coal, 3 parts of urea and ammonia water, the concentration of ammonia water is 25wt%; diethyl diethyl ethyl DA-6 0.07 parts. The mass ratio of urea to ammonia water is 1:1.

[0077] 2. Preparation of soil conditioner:

[0078] (1) Pulverize the phosphate rock tailings to obtain the phosphate rock tailings powder, mix and grind ...

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Abstract

The invention relates to a soil conditioner prepared by activating phosphate rock tailings by using organic/inorganic activators and a preparation method thereof. The soil conditioner is prepared by taking phosphate rock tailings as raw materials through carrying out mixed grinding on the phosphate rock tailings so as to activate the phosphate rock tailings in an organic-inorganic combined activation mode, in such a way, the influence of impurities in the phosphate rock tailings is overcome, so that low-content calcium, magnesium, phosphorus, silicon and iron in the phosphate rock tailings are fully activated, and then released into elements which can be effectively utilized by plants, therefore, the product has rich silicon, calcium, magnesium, nitrogen and phosphorus elements and the like, and has a good effect on the improvement and conditioning of acidic soil. The method has the advantages of simple operation, easily available raw materials, good product quality, simple reaction process, environmental friendliness, and the like.

Description

technical field [0001] The invention relates to a soil conditioner for activating phosphate rock tailings with organic and inorganic activators and a preparation method thereof, belonging to the technical field of fertilizer processing and application. Background technique [0002] Phosphate rock is an important chemical mineral raw material. In order to meet the quality requirements of wet-process phosphoric acid for raw material ore, my country currently mainly obtains qualified phosphoric acid concentrates for phosphoric acid production through various beneficiation technologies. However, usually every 1 ton of phosphorus concentrate is produced, 0.44 tons of tailings are produced, and about 7 million tons of phosphate tailings with low phosphorus content are produced every year. The phosphorus content is about 10wt%, the particle size is about 80 mesh, and the tailings are difficult to utilize. It is difficult to recycle useful components, resulting in a large waste of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/80
Inventor 姚华龙郭宗端裴海荣李伟王敏
Owner KINGENTA NORSTERRA CHEM CO LTD
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