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Magnetized tailings composite soil modifier

A technology of soil conditioner and tailings, which is applied in the direction of soil conditioning materials, fertilizer mixtures, chemical instruments and methods, etc., can solve the problems of not being able to consume solid waste, not being able to be used as a soil conditioner, and using a small amount of industrial waste. It achieves the effect of increasing crop yield significantly, increasing the content of soil water-stable aggregates, and using a large amount

Inactive Publication Date: 2008-09-17
SINOSTEEL MAANSHAN INST OF MINING RES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the composition of the multivariate compound fertilizer is complex, the magnetic effect is poor, the amount of nitrogen, phosphorus, and potassium compound fertilizer is large, the amount of industrial waste such as iron selection tailings is small, and the cost is high. It cannot be used as a soil improver, and it cannot consume a large amount of solids. waste
Moreover, pyrite ash and yellow phosphorus slag may contain harmful elements, which are not good for plant growth.

Method used

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  • Magnetized tailings composite soil modifier

Examples

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Embodiment Construction

[0022] To further describe the present invention, the composite soil amendment for magnetized tailings of the present invention will be further described below in conjunction with examples.

[0023] According to Table 1, prepare 100 kg of composite soil amendment for magnetized tailings (based on dry basis).

[0024] The operation steps of Examples 1-7 are: sieving iron-containing tailings, mixing the under-sieved material with nitrogen fertilizer or nitrogen, phosphorus, and potassium compound fertilizer uniformly; sending the mixture to a magnetization device through a belt for magnetization treatment, and then loading it into a bag Sales in. The magnetic field intensity at the material on the belt in the magnetization device is 2000-5000GS.

[0025] Because of the coarser particle size, the iron-containing tailings can be sold as construction sand.

[0026] Table 1 Composition and weight of composite soil amendment for magnetized tailings (kg)

[0027]

[0028] The magnetized...

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Abstract

The invention discloses a magnetized iron tailing compound soil amendment, which is prepared by iron-containing tailing, nitrogen fertilizer or nitrogen, phosphor and kalium compound fertilizer through the processes of mixing, magnetizing treatment, bagging and so on. The magnetized iron tailing compound soil amendment has the components according to the content ranges as follows: the iron-containing tailing 80%-96% (weight), the nitrogen fertilizer or the nitrogen, phosphor and kalium compound fertilizer 4%-20% (weight); and the ferriferrous oxide content in the iron-containing tailing 3%-15%(weight). The particle size of the iron-containing tailing is minus 0.1 mm, and the content occupies 60 to 100 percent (weight), wherein minus 20 um content is less than or equal to 30 percent. The magnetized iron tailing compound soil amendment has the advantages that the components are simple, the cost is low, the magnetized effect is good, the tailing used amount is large, and the soil hardening can not be caused during long use, and the agriculture crop wealth effect is obvious after application.

Description

Technical field [0001] The invention relates to a soil conditioner, in particular to a magnetized tailings composite soil conditioner prepared from mine iron ore tailings and agricultural fertilizers as raw materials, which can be used for soil improvement or directly used as a compound fertilizer. Background technique [0002] The amount of mine tailings produced in my country is 600-700 million tons, and the amount of tailings stockpiled is about 7-8 billion tons. Metallurgical mines alone produce more than 300 million tons of tailings each year. These mine solid wastes have caused serious harm to society, economy and environment due to improper treatment and disposal, leading to a series of problems such as aggravation of engineering disasters, waste of resources, water pollution, and destruction of vegetation. While mine solid waste is hazardous, it also has the characteristics of being usable, and it is a valuable secondary resource. The salient characteristics of solid wast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/02
Inventor 常前发钟铁白怀良王帆谭辉
Owner SINOSTEEL MAANSHAN INST OF MINING RES
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