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Composite improved planting soil for vegetation restoration of mining slopes and preparation of composite improved planting soil

A technology for vegetation restoration and slope, applied in the field of compound improved planting soil for vegetation restoration of mine slope and its preparation, can solve the problem of slow natural settlement of plants and slow primary succession process of ecosystem, lack of normal soil basic structure and fertility , There are no problems such as vigorous plant propagules, so as to improve the effective utilization rate, improve the acid-base environment, and facilitate the repair effect

Inactive Publication Date: 2020-07-31
广西七色草科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The height of the final slope of open-pit mines in my country is generally 100-300 meters, and some are as high as more than 800 meters. Therefore, there are many rock layers exposed by the slope, and the geological conditions of each space part are different and complex. The mine slope is an extreme The ecological environment does not have the basic structure and fertility of normal soil, soil organisms almost no longer exist, there is basically no vigorous plant propagule, the natural settlement of plants and the original succession process of the ecosystem are extremely slow; and, the mine slope There are problems such as complex terrain, more rocks and less soil, a large amount of land occupation, and difficult ecological restoration. It is often accompanied by the constraints of harmful substances including heavy metals that affect the normal ecological environment. A set of effective restoration methods is urgently needed

Method used

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  • Composite improved planting soil for vegetation restoration of mining slopes and preparation of composite improved planting soil
  • Composite improved planting soil for vegetation restoration of mining slopes and preparation of composite improved planting soil
  • Composite improved planting soil for vegetation restoration of mining slopes and preparation of composite improved planting soil

Examples

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Effect test

Embodiment 1

[0027] A method for preparing compound improved planting soil for vegetation restoration of mine slope, comprising the following steps:

[0028] (1) 20kg of distiller's grains, 20kg of bagasse, 2kg of diatomaceous earth, and 10kg of fly ash are mixed and ground, and sieved to obtain particles with a particle size of ≤10mm to obtain prefabricated material a;

[0029] (2) 50kg of urban sludge is sent into a concentrator for dehydration, dried and pulverized, added with 15kg of iron tailings and mixed evenly, added with water until the water content is 10wt%, then added with 5kg of attapulgite, and sent into a granulator for granulation. Particles with a particle size of 1.2mm are then sent to the rotary kiln for carbonization for 30 minutes at a carbonization temperature of 500 ° C, cooled, and 20 kg of specific surface area is 1004 m 2 / g and the apparent density is 0.38g / cm 3 Activated carbon, 40kg of organic matter content (on a dry basis) are 44% decomposed organic fertiliz...

Embodiment 2

[0032] A method for preparing compound improved planting soil for vegetation restoration of mine slope, comprising the following steps:

[0033] (1) 40kg of distiller's grains, 12kg of bagasse, 8kg of diatomaceous earth, and 1kg of fly ash are mixed and ground, and sieved to obtain particles with a particle size of ≤10mm to obtain prefabricated material a;

[0034] (2) 100kg of urban sludge is sent to a concentrator for dehydration, dried and pulverized, added with 4kg of iron tailings and mixed evenly, added with water until the water content is 20wt%, then added with 1kg of cross-linked starch, and sent into a granulator for granulation. Particles with a particle size of 1.5mm are then sent to a rotary kiln for carbonization for 20 minutes at a carbonization temperature of 600 ° C, cooled, and 10 kg of specific surface area is 1193 m 2 / g and the apparent density is 0.35g / cm 3 Activated carbon, 100kg organic matter content (on a dry basis) are 36% decomposed organic fertili...

Embodiment 3

[0037] A method for preparing compound improved planting soil for vegetation restoration of mine slope, comprising the following steps:

[0038] (1) 25kg of distiller's grains, 18kg of bagasse, 4kg of diatomaceous earth, and 7kg of fly ash are mixed and ground, and sieved to obtain particles with a particle size of ≤10mm to obtain prefabricated material a;

[0039](2) Send 60kg of urban sludge into a concentrator for dehydration, dry and pulverize, add 10kg of iron tailings and mix evenly, add water until the water content is 12wt%, then add 4kg of humic acid, and send it to a granulator for granulation Particles with a diameter of 0.8mm are then sent to the rotary kiln for carbonization for 28min at a carbonization temperature of 530°C, cooled, and 17kg is added with a specific surface area of ​​1084m 2 / g and the apparent density is 0.37g / cm 3 Activated carbon, 60kg organic matter content (on a dry basis) are 42% decomposed organic fertilizers and mix uniformly to obtain pr...

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Abstract

The invention discloses a preparation method of composite improved planting soil for vegetation restoration of mining slopes. The preparation method comprises following steps: (1), grinding distillers' grains, bagasse, diatomite and fly ash, and performing sieving to obtain a prefabricated material a; (2), thickening and dewatering municipal sludge, carrying out drying and smashing, adding iron tailing sand to be mixed uniformly, adjusting water content, then adding a binding agent, conducting granulation, feeding particles into a rotary kiln, carbonizing the particles at 500-600 DEG C for 20-30 min, performing cooling, and adding activated carbon and decomposed organic fertilizer to be mixed uniformly to obtain a prefabricated material b; and (3), uniformly mixing the prefabricated material a and the prefabricated material b, adding a fermented liquid to the mixture for decomposing at the decomposing temperature of 40-50 DEG C for 20-40 days, keeping the water content of the mixture at 16wt%-20wt% in the decomposing process, drying the mixture, adding polymaleic anhydride and polyvinyl alcohol to be mixed uniformly, and conducting granulation to obtain the composite improved planting soil for vegetation restoration of the mining slopes.

Description

technical field [0001] The invention relates to the technical field of mine slope vegetation restoration, in particular to a compound improved planting soil used for mine slope vegetation restoration and a preparation method thereof. Background technique [0002] At present, after mining, the surrounding terrain is seriously damaged, the original terrain has undergone huge changes, and geological disasters such as mudslides and landslides are prone to occur. The main reason is that the ecological environment has been seriously damaged and the vegetation has been severely damaged. to seriously affect. [0003] Mine slope is one of the important constituent elements of the mine, which usually refers to the sloped surface around the open-pit mine, including the total slope composed of many steps that have completed the mining work. The height of the final slope of open-pit mines in my country is generally 100-300 meters, and some are as high as more than 800 meters. Therefore,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20C05G3/00C05G5/12C05F11/00A01G24/10A01G24/17A01G24/20A01G24/27A01G24/30
CPCA01G24/10A01G24/17A01G24/20A01G24/27A01G24/30C05F17/00E02D17/20
Inventor 苏以南黄金英吴德煌黄聪
Owner 广西七色草科技有限公司
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