Drainage water diffluence method for dry red mud disposal and drainage water diffluence structure thereof

Abstract

The invention discloses a drain-separation method of dry process red mud yard and a drain-separation structure thereof; wherein, the structure comprises a red mud yard, a filter pipe, a yard water recycling tank and a returning pipe. In the method, the yard water recycling tank is arranged as the two of an independent red mud adhesive liquid water recycling tank and a rain water recycling tank, a drain corridor for draining rain water and examining and repairing the returning pipe is arranged at the bottom of the red mud yard, the drain corridor is communicated with the rain water recycling tank, the returning pipe is formed by collocating and connecting steel pipes and metal soft pipes, and a ring-shaped groove which is used for diffluentence is arranged at the bottom end in the filter pipe, and the returning pipe is connected with the ring-shaped groove part of the filter pipe. In this way, not only the reliability of water returning system is ensured, but also pollution to environment aroused by leakage of adhesive liquid is prevented, meanwhile, the arrangement to the drain corridor can also bring convenience for examining and repairing the water returning system, stability of production system is improved, and the hidden trouble of water leakage is eliminated.

Description

technical field

[0001] The invention relates to a drainage diversion utilization method and a drainage diversion structure of a dry-process red mud storage yard, and belongs to the technical field of red mud dry disposal. Background technique

[0002] Red mud is a waste residue produced in the production of alumina. Except for a small amount of red mud that can be comprehensively utilized, each alumina plant needs to build a special red mud storage yard to store red mud. There are two main methods of red mud storage: dry method and wet method. It is generally believed that the red mud entering the storage yard has a moisture content of more than 47% as a wet method, and a moisture content lower than 47% as a dry method. Red mud with alkali is generally 3~5g / L. Therefore, the pH value of the red mud attached liquid is usually above 12. The storage condition of the wet storage yard is similar to that of a reservoir, and has the disadvantages of high soaking line, high safe...

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