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Acidic copper tailings matrix improver, improved matrix, preparation method and application thereof

A technology of copper tailings and improver, applied in the application, fertilizer mixture, fertilization device and other directions, can solve the problems of unable to meet the needs of normal growth of plants, poisoning of heavy metals in plants, low nutrient content, etc., and achieve a significant effect of acid-base balance, The effect of rich organic matter and nutrients, and soil texture improvement

Inactive Publication Date: 2018-01-30
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the content of heavy metals in the soil is very high, which is likely to cause heavy metal poisoning to plants; on the other hand, the particles of copper tailings are very fine, and the content of nutrients is extremely low, which cannot meet the normal growth needs of most plants.

Method used

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  • Acidic copper tailings matrix improver, improved matrix, preparation method and application thereof
  • Acidic copper tailings matrix improver, improved matrix, preparation method and application thereof
  • Acidic copper tailings matrix improver, improved matrix, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This embodiment provides an acidic copper tailings matrix modifier. The acidic copper tailings matrix modifiers with serial numbers 1-11 include the components in parts by weight in Tables 1-3.

[0034] Table 1

[0035]

[0036]

[0037] The sludge described in No. 1-3 acidic copper tailings matrix modifier is composted sludge produced after secondary or above treatment of urban sewage, and the water content does not exceed 30%.

[0038] Table 2

[0039]

[0040] table 3

[0041]

Embodiment 2

[0043] This embodiment provides the manufacturing process of the acidic copper tailings matrix modifier, that is, the manufacturing process of the acidic copper tailings matrix modifier of the serial number 1-11 described in Example 1, including the components of the above-mentioned acidic copper tailings matrix modifier After proportioning by weight, grind and mix evenly to obtain.

Embodiment 3

[0045] This embodiment provides an acidic copper tailings improvement matrix, which includes copper tailings sand and the acidic copper tailings matrix improvement agent No. 1-11 described in the above-mentioned Example 1. The weight ratios of the copper tailings sand and the acidic copper tailings matrix modifier in the acidic copper tailings improvement matrix of serial number a-j are shown in the following table 4-5.

[0046] Table 4

[0047]

[0048] table 5

[0049]

[0050] ("improving agent serial number" in the above table 4-5 refers to the acidic copper tailings matrix improving agent of serial number 1-11 in Example 1; "ratio" refers to the weight ratio of copper tailings tailings and the above-mentioned improving agent.)

[0051] The physical and chemical parameters of the improved matrix are shown in Table 6 below:

[0052] Table 6

[0053]

[0054]

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Abstract

The invention relates to an acidic copper tailing matrix improver, an improving matrix, a preparation method of the improver and an application of the improving matrix. The improver comprises components including bentonite, rice husk, sludge, coal cinder and animal dung. The problem of deficience of matrixes for plant growth in the vegetation rehabilitation process in the area of copper tailings can be specifically and effectively solved by means of the improver and the improving matrix. The improver has main functions of acid-base balance adjustment, nutrient and organic matter supply and texture improvement of the plant growth layer of the tailing area, is a high-quality and inexpensive matrix improvement material and is applied to acidic mine treatment and vegetation rehabilitation, the environmental pollution can be reduced, the mine environment is beautified, and the ecological and economic benefits are increased. The acidic copper tailing matrix improver and the improving matrix have the characteristics of simplicity and flexibility in operation and high adaptability.

Description

technical field [0001] The invention relates to the field of mine vegetation restoration, in particular to an acidic copper tailings matrix modifier and its preparation method and application. Background technique [0002] Copper tailings are an inevitable product in the process of copper mining, the environmental conditions are relatively harsh, and the comprehensive utilization rate of mines is relatively low. At present, the main way of disposing of copper tailings is to basically not process them, and directly transport them to the copper tailings storage for storage. After the copper tailings stored in the open air are exposed to the sun and rain, various toxic and harmful substances will migrate and transform. Through surface runoff and underground infiltration, it will eventually cause serious pollution of the soil and groundwater around the copper tailings pond, and even affect human beings. of good health. On the one hand, the content of heavy metals in the soil i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
Inventor 宋桂龙韩立亮
Owner BEIJING FORESTRY UNIVERSITY
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