The Function of Hydrocyclone Separator in Tailings

Date: 2021-11-10     From: Longding     Author: admin

The hydrocyclone has the functions of grading, concentration, and dehydration, especially in the treatment of tailings, with the advantages of small investment, high yield, and no future troubles.

According to the existing experimental research results, for metal mine tailings, the sedimentation concentration of the cyclone can reach more than 80%, and the sedimentation yield is 60% to 70%. The use of cyclones in tailings concentration and dehydration operations not only can play the role of existing tailings concentration equipment, but also can be used for tailings technical transformation or expansion. In addition, the cyclone can also synthesize a new type of concentration process with the concentration unit. The cyclone is used for rapid concentration to separate most of the coarse-grained tailings that are easy to thicken from the tailings in advance, and the cyclone overflows into the thickener for concentration. In this way, the load of the thickener is greatly reduced, the thickener running and mixing can be avoided, and high-concentration sedimentation can be quickly obtained, which improves the tailings processing capacity and facilitates the transportation of subsequent processes.

The function of Hydrocyclone separator in tailings

Tailings recovery — high yield

The average grades of copper and gold in copper tailings are 0.07% and 0.08g/t, respectively. The content is low, and the grain size of the embedded cloth is fine. However, due to the large processing capacity, the coarse-grained copper and gold conjoined bodies and fine grains Monomer gold is very valuable for recycling. The copper and gold in the tailings are recovered by the cyclone, and the total tailings are enriched by a short-cone cyclone to obtain a high yield. According to the conventional grinding and floating process, the sediment is further sorted, and a concentrate with a copper grade of 18% and a gold grade of 6.88g/t can be obtained. The comprehensive recovery rate of copper and gold (relative to the original ore) is increased by 2.04% and 1.85% respectively.

Tailings filling

Tailings filling is to first dehydrate the tailings into tailings with a concentration of about 70%, and then re-inject them into the goaf after a special treatment. This is the filling method currently being used in many mines. The requirement for tailings sand is to remove fine-grained mud to obtain high-concentration sedimentation. The equipment that can be selected includes thickener, desilter, rake classifier, spiral classifier, and cyclone. The use rate of cyclones in other equipment is very high, and the overall efficiency is also better. Not only the equipment is simple, the configuration is convenient, and the operation flexibility is large, but it can also quickly achieve the dual purpose of desliming and increasing the concentration.