Low-grade manganese carbonate polymetallic ore multistage beneficiation device

Abstract

The invention relates to the field of manganese ore beneficiation, in particular to a low-grade manganese carbonate polymetallic ore multistage beneficiation device which comprises a magnetic separation box, and a plurality of horizontal magnetic separation rollers arranged at intervals from top to bottom. An inclined first bouncing board is arranged beside each magnetic separation roller, and a second bouncing board is arranged below each magnetic separation roller. One side of the first bouncing board directly faces the magnetic separation roller, the rotating direction of the magnetic separation roller always faces the clockwise direction of the first bouncing board, and transmission arms are arranged at the two ends of the magnetic separation roller respectively. One ends of the transmission arms are coaxially connected with the magnetic separation roller, and the other ends of the transmission arms can be in transmission connection with the first bouncing board and the second bouncing board. The upper half space part, corresponding to the first bouncing space, of the first bouncing board is a bent area, the transmission arms are used for driving the bent area to swing towards the magnetic separation rollers in a reciprocating mode through self bending, the transmission arms are used for driving the lower end of the second bouncing board to swing up and down. According to the present invention, the screening effect of each magnetic separation roller can be improved, and the screening missing probability can be effectively reduced.

Description

technical field [0001] The invention relates to the field of manganese ore beneficiation, in particular to a multi-stage beneficiation device for low-grade manganese carbonate polymetallic ore. Background technique [0002] Manganese ore is one of the main raw materials for ferroalloy factories and steel mills. At present, the grade of manganese ore for industrial use is about 30-35 degrees. However, most of the manganese ore resources in southwest my country are of low grade and high in harmful impurity elements, so they cannot be used directly; the existing The method is to grind the manganese ore to a set particle size, and then carry out multi-stage mineral separation; the existing mineral processing methods are mainly divided into roasting, flotation mineral separation, magnetic separation and gravity separation, roasting, flotation mineral separation and gravity separation for In terms of the environment, they all have certain pollution, which is contrary to the goal of ...

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of the above scheme are: the contact area between the magnetic roller and the discharge port is small, the particle size of the mineral material after ball milling is small, the thickness is thicker when discharging, and the material that can and cannot be adsorbed by the magnetic roller is unevenly distributed. Some places are more, some places are less, and some materials that should be able to absorb with the magnetic roller, because the contact area of ​​the material and the magnetic roller is too small at the moment of falling, and because the outer surface of the magnetic roller is circular, it is bound to cause some The material that can be absorbed by the magnetic roller bounces. After bouncing, it cannot contact the magnetic roller, but falls directly. It is very easy to cause missed selection, which leads to the problem of low screening rate.

Images