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Spray-sowing greening method for red mud stacking areas

A technology of red mud and storage yard, applied in chemical instruments and methods, land preparation methods, botanical equipment and methods, etc., to achieve the effects of good water and fertilizer retention, maintenance of slope stability, and improvement of physical and chemical properties

Active Publication Date: 2012-09-19
青岛冠中生态股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a greening method suitable for red mud stockpile spray sowing to solve the problems of red mud stockpile greening and slope stability

Method used

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Examples

Experimental program
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Embodiment Construction

[0027] Location: Zibo City, Shandong Province, aluminum ore red mud yard; area: 1000m 2 ; Slope: 60°; pH: 10.37.

[0028] The specific spraying greening method is carried out in sequence according to the following steps:

[0029] 1. Treat the slope of the red mud stockyard to remove weeds and waste.

[0030] 2. Carry out slope shaping on the red mud storage yard, and use mechanical or manual slope cutting to make the slope not higher than 60°.

[0031] 3. Dilute 98% concentrated sulfuric acid, prepare a sulfuric acid dilution with a pH of 0.73, wash (evenly spray) the slope with the sulfuric acid dilution for 4 to 5 times, and reduce the pH at 20cm of the red mud layer to between 6 and 7. good. 35.3L sulfuric acid dilution per square meter, the spray state is foggy. The water content of the red mud is high, if the spraying is too fast, it is difficult for the diluted sulfuric acid to penetrate, which will affect the alkaline treatment of the red mud stockpile.

[0032] 4....

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Abstract

The invention discloses a spray-sowing greening method for red mud stacking areas (slag from alumina refining), which is characterized by comprising the following steps of: (1) cleaning surface saprolite of the red mud stacks and preparing slope surfaces; (2) washing the slope surfaces with diluted sulfuric acid; (3) spraying a bottom sealing layer; (4) spreading petates on the bottom sealing layers; (5) spreading metal meshes on the petates; (6) mounting anchoring pieces to fix the metal meshes; (7) spraying soil substrate containing arbor and shrub seeds; (8) spraying a protective substrateon the soil substrate; and (9) performing manual work maintenance. By the method, greening of red mud stacks and repair of ecological environments are realized, and a new method is provided for greening red mud stacks and stabilizing side slopes.

Description

technical field [0001] The invention relates to a greening method suitable for spraying red mud storage yards, maintaining the stability of the red mud storage yard side slopes and rebuilding the ecological environment. The red mud stockpile component refers to the waste slag generated in the process of refining alumina. Background technique [0002] Red mud is a red powdery mud-like waste discharged from the alumina industry. It is a strongly alkaline and harmful residue with a high moisture content and a bulk density of 700-1000kg / m. 3 , specific surface area 0.5~0.8m 2 / g. At present, most of the red mud is stored by dam wet method at home and abroad. With the increase of alumina production, the red mud storage area expands again and again, forming a large number of exposed slopes, which not only destroys the ecological environment, but also causes local microclimate. change and disruption of the biological chain. In addition, this stacking method is very easy to cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01B79/02A01B77/00E02D17/20C09K17/06C09K101/00C09K109/00
CPCY02A40/22Y02P60/40
Inventor 许剑平李春林祁传磊张赫然
Owner 青岛冠中生态股份有限公司
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