Long-distance high-concentration tailing discharge process for damming by tailing midline method

Abstract

The invention discloses a long-distance high-concentration tailing discharge process for damming by a tailing midline method. The long-distance high-concentration tailing discharge process comprises the following steps: (1) optimizing a damming process and a sand settling discharge area; (2) realizing real-time adjustment of a sand settling discharge point; (3) selecting a discharge pipeline; (4)optimizing a sand setting long-distance high-concentration discharge process parameter test; and (5) bringing process curing into the daily operation standard. According to the new process, by optimizing the discharge area of a traditional sand setting discharge process, the technical problems that the sand setting amount in the middle of the outer slope of a fill dam body is insufficient and theslope gradient is steep due to the fact that graded setting sand of a high dam hydrocyclone built through a midline method in the northern area is automatically discharged at the dam crest are solved,the slope gradient of the middle of the outer slope of the fill dam is effectively reduced, the damming quality of the fill dam is improved, and the intrinsic safety of the tailing dam is improved. The long-distance high-concentration tailing discharge process has great popularization values in the mine for implementing the tailings midline damming process in the northern area.

Description

technical field [0001] The invention relates to a long-distance high-concentration tailings discharge process for damming a tailings midline method, and belongs to the technical field of water supply and drainage. Background technique [0002] Daixian Mining Co., Ltd. of Taiyuan Iron and Steel Group currently adopts the centerline dam construction method for tailings treatment. The centerline dam construction method uses tailings classification equipment as hydrocyclones, and the cyclone classification sand settling is used for heaping dams The grading overflow discharges to the reservoir area and naturally grades to form the sedimentary beach of the tailings pond, and the dam body and the tailings sedimentary beach constitute the tailings accumulation dam. In order to ensure the stability of the dam body, the centerline dam method requires the grading equipment - the hydrocyclone to have a high sand production rate, and the quality of the dam, that is, the quality of the sa...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a long-distance discharge process for cyclone-classified grit-set tailings for tailings center-line dam-building method, which is easy to adjust the operation and adjustment of grit-set slurry discharge, and the discharge position can be adjusted flexibly, which solves the problem of the center-line dam-building method. The traditional dam-building process fixes the sand discharge area on the dam crest, resulting in a steep middle part of the slope of the dam body, and the slope is difficult to be uniform, which is likely to cause gullies on the dam surface and adversely affect the safety of the dam body; The sand production rate of the cyclone classification increases the sand production of the cyclone, so that the available storage capacity occupied by the sand accumulation body in the area with a steeper slope in the middle of the slope of the dam body can be fully and effectively utilized, and the tailings can be extended. library usage time