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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, which is 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 with empirical data, etc. Achieving the effect of large storage capacity

Active Publication Date: 2006-10-25
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 subdam constructing method using Bayer red mud dry storage ground, constructing a subdam on the red mud on inner edges of an initial-stage dam staked with red mud, and comprising the steps of: batching, subdam foundation firming, subdam body rolling moudling, and subdam body finishing. And it is aimed at the red mud dry storing mode in the Bayer production, able to meet mechanical strength for stabilizing the red mud storage ground in the dry storing mode, and able to obtain larger storage capacity in a limited storage ground 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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IPC IPC(8): C02F11/00C01F7/02E02D17/18E04G21/02
Inventor 李明阳
Owner GUIYANG AL-MG DESIGN & RES INST
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