Powerless pipeline transportation method of high concentration tailings

Abstract

Provided is a powerless pipeline transportation method of high concentration tailings, pertaining to the field of tailings transportation and solid-liquid two-phase pipeline transportation. The technical problem is solved by providing a transportation method of high concentration tailings adapted to mine tailings condensed at high concentration and with mass concentration of more than 70%. Therefore, pipeline self-flowing transportation is carried out by adoption of high topographic relief. The method shows great transportation capability without any transportation pump.The powerless pipeline transportation method of high concentration tailings comprises following steps: firstly, carrying out a transportable experiment on ore pulp to be transported, wherein the test comprises proportions of solid, grain gradation distribution, rheological properties, settlement characteristics, repose slopes, sliding slopes and slump. The optimal transportation concentration is determined according to experiment data.Furthermore, hydraulics and transportation technology design are performed in combination of high topographic relief and transportation properties of high concentration tailings such that pipeline self-flowing transportation of high concentration tailings at mass concentration of more than 70% by utilization of high topographic relief is ensured. No power is needed for the whole process of transportation. The marked energy-saving effect is exerted.

Description

technical field [0001] The invention relates to a non-powered pipeline transportation method for high-concentration tailings, and belongs to the technical field of tailings transportation and solid-liquid two-phase flow pipeline transportation. Background technique [0002] At present, there are two ways to choose tailings discharge in my country, one is the traditional wet stacking of tailings ponds, and the other is dry stacking of tailings. The traditional tailings pond wet stacking is to discharge the tailings slurry directly into the tailings pond through the pipeline without any treatment, and recycle the water in the upper layer of the tailings pond through natural precipitation. When the tailings pond reaches the required load, it needs Close the reservoir, and then do water and soil conservation, vegetation restoration, and land reclamation. The traditional wet discharge of tailings in the dressing plant not only increases the operating cost, but also brings great ...

AI Technical Summary

Problems solved by technology

[0004] However, when the tailings slurry is dehydrated by the thickening system to increase the concentration and used for dry discharge, the mass concentration after concentration usually reaches more than 70%, and the fluidity becomes poor, which is not conducive to pipeline transportation and prone to sedimentation and plugging. The transportation method of forklift or belt transportation not only easily causes secondary pollution but also has high operating costs. Therefore, the pipeline transportation technology of high-concentration tailings slurry used for dry discharge restricts the development of tailings dry discharge technology to a certain extent