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Sub-dam construction method of Bayer process red-mud dry-stacking field

A Bayer method of red mud and sub-dam technology, applied in chemical instruments and methods, filling, construction, etc., can solve the problems that are not suitable for sub-dam construction, and the dam slope ratio of sub-dam construction methods cannot be applied to empirical data. Achieve the effect of large storage capacity

Active Publication Date: 2009-09-02
GUIYANG AL-MG DESIGN & RES INST
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Problems solved by technology

Because the mechanical properties of Bayer red mud are quite different from those of the sintering method and the combined method, the sintering method and the sintering method commonly used in China cannot be applied in terms of the dam construction method, dam height, and slope ratio of the sub-dam. The empirical data of the combined red mud storage yard, and the existing sub-dam construction methods of the red mud storage yard are not suitable for the sub-dam construction of the Bayer dry red mud storage yard

Method used

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  • Sub-dam construction method of Bayer process red-mud dry-stacking field

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Embodiment Construction

[0014] Embodiments of the present invention: as attached figure 1 As shown, first of all, prepare the dam building materials, select the red mud that has been sun-dried and has a water content of 25% to 35% in the red mud layer of the storage yard, and transport it to the sub-dam to be constructed by bulldozers, excavators and other machinery Stacked nearby and protected by measures (such as discharging a small amount of red mud slurry on the surface) to maintain its water content.

[0015] Secondly, the dam foundation of the sub-dam is reinforced. The sub-dam 1 is located on the red mud layer, and the red mud layer is used as the sub-dam foundation. First, use a bulldozer to break the shell and perform preliminary rolling operations on the red mud layer within the scope of the dam foundation 2, and then use a vibratory road roller to further compact it until the water content of the red mud within 3m depth within the dam foundation range reaches 35% or less. , the reinforcem...

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Abstract

The invention discloses a method for constructing a sub-dam of a red mud dry storage yard in the Bayer method. The sub-dam (1) is constructed on the red mud along the inner edge of the initial dam that has been filled with red mud, and the construction method of the sub-dam is as follows Several steps are completed: material preparation, reinforcement of the dam foundation, rolling forming of the dam body, and dam body repairing. The present invention is aimed at the red mud dry storage method produced in the Bayer process, and the sub-dam construction method invented can meet the mechanical strength required for the storage yard stability of the red mud dry storage method, and can be used in a limited Larger storage capacity is obtained on the storage area.

Description

technical field [0001] The invention relates to a sub-dam construction method of a red mud dry storage yard, in particular to a sub-dam construction method of a Bayer red mud dry storage yard. Background technique [0002] In the production of alumina, different production processes are adopted with different raw materials. At present, the alkaline production process is widely used. In the alkaline production process, it can be divided into Bayer process, sintering process and combined process. The waste slag generated in alumina production is red mud, which needs to be sent to a special red mud yard for storage. The storage capacity of the red mud storage yard is obtained by building a dam. Generally, the initial dam is constructed with earth and rocks and other materials. After the initial dam is full, the sub-dams are built with red mud and then raised step by step, so as to obtain a larger storage capacity on a limited storage area. . [0003] The material composition...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00C01F7/02E04G21/02E02D17/18
Inventor 李明阳
Owner GUIYANG AL-MG DESIGN & RES INST
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