Filling method of all-tailing ore pulp

Abstract

The invention discloses a filling method of all-tailing ore pulp. According to the method, the all-tailing ore pulp is directly conveyed to an agitator and is stirred with cementing agents and aggregate for preparing filling pulp for filling; the existing all-tailing cemented filling technology is changed, the all-tailing ore pulp serves as mixing water and replaces original mixing water, and the shortcoming that before low-concentration all-tailing ore pulp enters the agitator, a large amount of water needs to be discharged through the densification process, then the low-concentration all-tailing ore pulp enters the agitator for being mixed with cementing agents and then partial mixing water is added can be overcome.

Description

technical field [0001] The invention belongs to the field of cemented filling of mines, and particularly designs a filling method of full tailings slurry. Background technique [0002] With the mining and utilization of mineral resources, geological disasters occur frequently, and green filling mining is imperative. Many countries in the world have legislated on filling mining. At the same time, as the main structure of the mine, the tailings pond is an artificially formed high-level debris flow hazard from a safety point of view. Once an accident occurs, it will inevitably cause irreparable and heavy losses to the life and property of the mine and downstream people. In recent years, mine tailings pool accidents have occurred frequently. Various systems have been introduced for the management of tailings pools at home and abroad. China has clearly proposed to use full tailings for cemented backfill mining. Therefore, full tailings cemented backfill technology is the only way...

AI Technical Summary

Problems solved by technology

However, the current full tailings cemented filling technology is to transport the full tailings to the thickener of the filling system. Through the thickener, the tailings slurry transported by the concentrator is thickened from low concentration to high concentration, and then the high concentration full tailings is transferred through the wind and water linkage system. The mortar is transported to the mixing tank, where it is mixed with cement, aggregate and mixing water for mixing. However, there are two problems in this full tailings transporting technology: one is that the filling station needs to build a set of dense equipment, and the existing technology for this equipment is It is immature, and its storage application is still in the exploratory stage, and the construction cost is relatively high; secondly, affected by the continuity of filling, the filling system mostly adopts interval production. If it is not filled for two consecutive days or more, the dense Due to the long storage time and high concentration near the discharge port of the equipment, the discharge port cannot normally transport the whole tailing mortar, resulting in the failure of normal filling operation; The strength is too small to meet the strength requirements for filling directly as filling slurry

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