Process method for continuous safe discharge of dry tailings subsidence subsidence area

Abstract

The invention relates to a technical method for continuous and safe discharge of dry tailings in a collapsing subsidence area. Devices selected for the method are an ordinary belt machine, a tailing discharge machine and a bulldozer or a loader. The method includes the following specific steps that (1) the field is leveled, and the devices are installed and started after debugging and acceptance; (2) the dry tailings discharged from a pressing-filtering workshop are discharged into a receiving hopper on the rear portion of the tailing discharge machine through the ordinary belt machine, and the tailing discharge machine discharges the dry tailings to the collapsing subsidence area; (3) the tailing discharge machine moves forwards, leftwards and rightwards gradually so that the dry tailings can be discharged within a one-step-distance fan-shaped range of the collapsing subsidence area, and the bulldozer or the loader conducts leveling and tight pressing; (4) when the one-step-distance fan-shaped range is fully loaded with the dry tailings through discharging, the ordinary belt machine extends by the length of one-step-distance, and the step (3) is executed repeatedly and dry tailings are discharged continuously in the next step-distance fan-shaped range; (5) the step (4) is executed repeatedly and continuously till discharge of the dry tailings in the whole collapsing subsidence area is finished. The method is simple and reliable, capable of achieving continuous and safe discharge and high in production efficiency.

Description

technical field [0001] The invention relates to stockpiling of ore dressing tailings, in particular to a process method for continuous and safe discharge of dry tailings in subsidence areas. Background technique [0002] my country is a big mining country with a long history of mining, and the mining industry plays an important and fundamental role in national economic and social development. With the development of mining economy, the development scale and development intensity of mineral resources increase, the problem of mine ground subsidence and subsidence becomes more and more prominent, and has become a major mine geological disaster. At the same time, the mining of mineral resources must go through multiple processes such as crushing, grinding, and sorting to select concentrates. In this process, a large amount of tailings will inevitably be discharged. Tailings not only occupy a large amount of land, but also bring serious pollution and harm to human production and...

AI Technical Summary

Problems solved by technology

[0004] At present, there is no mature technology for the safe discharge of dry tailings in the subsidence area. The traditional belt conveyor is used to discharge only to a single point, and the dry tailings will form a pile, which cannot be naturally discharged into the subsidence area, and it cannot be continuous For discharge, the position of the belt needs to be replaced frequently. Even if the bulldozer and loader are used to push and discharge, there is still a huge danger that the dry tailings landslide will cause the bulldozer and loader to slide into the subsidence area

Images