Composite modifier for soil remediation of rare earth mining area and preparation method thereof

A technology for soil remediation and rare earth mining areas, applied in the direction of soil conditioning materials, chemical instruments and methods, applications, etc., can solve problems such as soil acidification, and achieve the effects of improving soil structure, improving soil fertility, good economic benefits and ecological benefits

Inactive Publication Date: 2020-08-28
BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of soil acidification and sandification in existing ionic rare earth mining areas, the present invention provides a composite improver for soil restoration in rare earth mining areas and a preparation method thereof

Method used

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  • Composite modifier for soil remediation of rare earth mining area and preparation method thereof
  • Composite modifier for soil remediation of rare earth mining area and preparation method thereof
  • Composite modifier for soil remediation of rare earth mining area and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1 provides a kind of compound improver that is used for the remediation of acidic sandy soil in ionic rare earth mining area, comprising the following components: in parts by weight, shell powder is 10 parts, crop waste is 10 parts, livestock and poultry manure is 20 parts, fermented sludge is 20 parts, bentonite is 15 parts, based on the total volume of shell powder, agricultural waste, livestock and poultry manure, fermented sludge and bentonite, plant adhesive is 100g / m 3 .

[0038] The preparation method of above-mentioned composite improver comprises the following steps:

[0039] 1) Mix 10 parts of crop waste, 20 parts of livestock manure, 20 parts of fermented sludge, and 15 parts of bentonite at room temperature;

[0040] 2) Put the mixed material obtained in step 1) into a blender, add 10 parts of shell powder, and stir evenly;

[0041] 3) Calculate and add 100g / m based on the volume of the mixture obtained in step 2) 3 Add water, adjust the humidi...

Embodiment 2

[0043] Embodiment 2 provides a kind of compound improver that is used for the remediation of acidic sandy soil in ionic rare earth mining area, comprising the following components: in parts by weight, shell powder is 15 parts, crop waste is 15 parts, livestock and poultry manure is 25 parts, fermented sludge is 25 parts, bentonite is 20 parts, based on the total volume of shell powder, agricultural waste, livestock and poultry manure, fermented sludge and bentonite, plant adhesive is 150g / m 3 .

[0044] The preparation method of above-mentioned composite improver comprises the following steps:

[0045] 1) 15 parts of crop waste, 25 parts of livestock and poultry manure, 25 parts of fermented sludge, and 20 parts of bentonite were uniformly mixed at room temperature;

[0046] 2) Put the mixed material obtained in step 1) into a blender, add 15 parts of shell powder, and stir evenly;

[0047] 3) Calculate and add 150g / m based on the volume of the mixture obtained in step 2) 3...

Embodiment 3

[0049] Embodiment 3 provides a kind of compound improver that is used for the remediation of acidic sandy soil in ionic rare earth mining areas, including the following components: in parts by weight, shell powder is 30 parts, crop waste is 20 parts, livestock and poultry manure is 30 parts, fermented sludge is 30 parts, bentonite is 35 parts, based on the total volume of shell powder, agricultural waste, livestock and poultry manure, fermented sludge and bentonite, plant adhesive is 200g / m 3 .

[0050] The preparation method of above-mentioned composite improver comprises the following steps:

[0051] 1) 20 parts of crop waste, 30 parts of livestock and poultry manure, 30 parts of fermented sludge, and 35 parts of bentonite are uniformly mixed at room temperature;

[0052] 2) Put the mixed material obtained in step 1) into a blender, add 30 parts of shell powder, and stir evenly;

[0053] 3) Calculate and add 200g / m based on the volume of the mixture obtained in step 2) 3 ...

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Abstract

The invention relates to the technical field of mineral soil remediation, in particular to a composite improver for soil remediation of a rare earth mining area and a preparation method thereof. The composite improver comprises the following components: shell powder, crop waste, livestock and poultry manure, fermented sludge, bentonite and a plant adhesive. The shell powder accounts for 10-30 parts by weight, the crop waste accounts for 10-20 parts by weight, the livestock and poultry manure accounts for 20-30 parts by weight, the fermented sludge accounts for 20-30 parts by weight, the bentonite accounts for 15-35 parts by weight, and the plant adhesive accounts for 100-200 g/m < 3 > by total volume. The composite improver can effectively adjust the contents of organic nitrogen, phosphorus, potassium and organic matters in the soil of the ionic rare earth mining area, improve the soil structure, improve the soil fertility, solve the problem of low contents of organic matters, nitrogen, phosphorus and other nutritional ingredients in the ionic rare earth mining waste land, and provide a good environment for the growth of plants.

Description

technical field [0001] The invention relates to the technical field of mineral soil remediation, in particular to a composite improver for soil remediation in rare earth mining areas and a preparation method thereof. Background technique [0002] Ionic rare earth minerals are widely distributed in Jiangxi, Fujian, Guangdong, Yunnan, Hunan, Guangxi, Zhejiang and other provinces in southern my country. They are rich in medium and heavy rare earth elements, of which the reserves of medium and heavy rare earths account for more than 80% of the world. It is a valuable mineral resource. my country's ionic rare earths began to be mined in the 1970s. In the mid-1980s, the development of this resource entered a very rapid development stage. A large number of rare earth mining areas were built with open-air pool leaching and heap leaching mining techniques. In the mid-1990s, they were gradually improved to In-situ leaching process. [0003] Due to the extensive environmental protectio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/80C05G3/00C09K17/40C09K101/00C09K109/00
CPCC05D9/00C05G3/00C09K17/40C09K2101/00C09K2109/00C05G3/80C05F1/005C05F3/00C05F5/002C05F7/00C05F11/00
Inventor 孟磊王琼祝怡斌霍汉鑫陈雁南
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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