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Application method for red mud in red mud storage yard impermeable layer

A technology of red mud storage yard and application method, which is applied in protection devices, buildings, infrastructure engineering and other directions, can solve the problems of reduced anti-seepage ability of geomembrane protection, large weather influence, and reduced liquefaction strength, etc., and achieve the effect. Good, high curing strength, good protective effect

Inactive Publication Date: 2014-05-14
LUOYANG GUANGXIN CONSTR GRP
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  • Description
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Problems solved by technology

[0003] At present, the anti-seepage of red mud stockyards mostly adopts the clay-geotechnical membrane anti-seepage method, that is, clay is used as the upper and lower protective layers of the geomembrane. The disadvantage of this anti-seepage technology is that it consumes a lot of cultivated land, and the clay is easily soaked in red mud liquid or groundwater for a long time. The liquefaction strength is reduced, the anti-seepage ability and the protective effect on the geomembrane are reduced, the bleeding is poor, and the construction is greatly affected by the weather

Method used

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  • Application method for red mud in red mud storage yard impermeable layer
  • Application method for red mud in red mud storage yard impermeable layer
  • Application method for red mud in red mud storage yard impermeable layer

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Experimental program
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Embodiment Construction

[0012] The feasibility of this method will be illustrated in combination with experiments below.

[0013] 1. Characteristics of red mud

[0014] Through the observation and experiment of the discharge of red mud in the first phase red mud storage yard. The discharged red mud is in the form of slurry, and the water content in the red mud slurry is 45%-60%. Due to the strong bleeding of the red mud slurry, after 2 days of deposition, the water in the red mud slurry floats on the surface, and the pH is between 13-14. The storage is thrown on the ground to form the previously silted red mud surface, and the solid phase deposition is gradually realized along the movement path. At the same time, the natural sorting of the particles in the red mud by size and density is completed, and two basic zones are gradually formed: alluvial The water area of ​​the shoal, and the underwater slope sedimentation area of ​​the alluvial shoal.

[0015] The water area of ​​the alluvial be...

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Abstract

Disclosed is an application method for red mud in a red mud storage yard impermeable layer. The method comprises the steps that a foundation constructed on the flat ground is paved with the red mud with the thickness of 500 mm and then is paved with geomembranes, and the geomembranes are filled with the red mud with the thickness of 500 mm. The red mud layer needs to be ground and dried to be in the solidified state. Clay consumption can be reduced, various negative factors caused when the clay is used as an impermeable layer are avoided, and an effective way is provided for comprehensive utilization and safe storage of the red mud.

Description

technical field [0001] The invention relates to the utilization field of alumina waste, in particular to an application method of red mud in an anti-seepage layer of a red mud stockyard. Background technique [0002] In recent years, my country's alumina industry has developed rapidly, and the output of red mud is increasing day by day. As a kind of solid waste, due to the lack of available effective technology, the comprehensive utilization rate of red mud has been at a low level, resulting in a large amount of red mud stockpiling, not only Occupy land, waste resources, and bring environmental pollution and safety hazards. [0003] At present, the anti-seepage of red mud stockyards mostly adopts the clay-geotechnical membrane anti-seepage method, that is, clay is used as the upper and lower protective layers of the geomembrane. The disadvantage of this anti-seepage technology is that it consumes a lot of cultivated land, and the clay is easily soaked in red mud liquid or gro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D31/00
Inventor 李健秦瑛王晓颖王惠琴贾亮杨先伟
Owner LUOYANG GUANGXIN CONSTR GRP
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