Flat ground type red mud storage yard and discharging method thereof

Abstract

The invention discloses a red mud storage yard. The red mud storage yard comprises a circle of initial dam built along the periphery of a site; the interior of the initial dam is divided into a plurality of subareas through middle partition dams; blocking dams are arranged at the junctions of all the subareas and correspond to all the subareas; a small flood regulation pool is defined by the blocking dams; and the small flood regulation pool is connected with the subareas through culvert pipes arranged on the blocking dams. The invention further discloses a discharging method of the red mud storage yard. A flood drainage system is arranged near the combination part of each subarea, in the running process of the red mud storage yard, when rainfall occurs on successive days, sewage generated by rainfall can be guided into the adjacent unused areas, the adjacent subareas are used as sewage adjusting tanks to store the sewage, and rainfall in other unused subareas can be discharged outwards. By means of the method, no water is accumulated in the storage yard in use, the volume of a sewage storage place is greatly increased, the guarantee degree can be remarkably improved in safety and environmental protection, and the defects in an existing arrangement mode and a storage process are overcome.

Description

technical field [0001] The invention belongs to the technical field of dry treatment of red mud, and in particular relates to a flat-type red mud storage yard and a discharge method thereof. Background technique [0002] Red mud is the waste residue produced from the production of alumina or aluminum hydroxide from mineral raw materials containing aluminum. Except for a small amount that can be comprehensively utilized, a special red mud yard needs to be built to store red mud. [0003] The red mud yard is a place used to store the red mud discharged from the production process of alumina or aluminum hydroxide enterprises (hereinafter referred to as aluminum plants). [0004] There are two main ways to dispose of red mud: wet method and dry method. It is generally believed that the water content of the red mud entering the yard is more than 47% for the wet method, and less than 47% for the dry method. Dry method is divided into slurry dry method and filter cake method. We...

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Problems solved by technology

[0009] The flat-type dry-process red mud stockpile using this operation technology will face the following problems: when the elevation of the red mud beach exceeds the initial dam crest, the slope of the red mud accumulation in the site is relatively gentle (generally 1% to 2%) , the flood control storage capacity in the used partition is small. In case of continuous rainfall, the rainwater will be alkaline after falling on the storage yard in use, and it is not allowed to be discharged directly. However, the amount of backwater used by the aluminum plant or the treatment capacity of the sewage treatment station It is certain, which causes too much sewage to be stored in the storage yard, occupying the flood control storage capacity of the storage yard. Excessive rainwater has the risk of overflowing from the accumulation dam crest, endangering the safety of the dam body and polluting the environment; Water makes it difficult for the red mud to dry and consolidate, and the foundation of the sub-dam will be weak when the sub-dam is built in the later stage

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