Heavy medium-re-election-flotation-re-election beneficiation of tin, lead, antimony and zinc ore in Dachang, Guangxi

2025-05-29 10:02:54
The heavy medium-re-election-flotation-re-election process used by the plant is shown in the figure below.
FIG flowchart long slope beneficiation plant
Guangxi long slope deposits is a very complex cassiterite - sulphide ore, which has significant mineral industry for more than ten different kinds, mainly cassiterite, iron sphalerite, pyrite, pyrrhotite, arsenopyrite , Jamesonite lead ore, lead ore and other tin stibnite, gangue minerals as quartz, tourmaline, calcite.
According to the selected process flow, firstly, the heavy medium is selected, and 40%~60% of the waste rock in the original ore is discarded in the cyclone, and the heavy product enters the front stage for re-election, and the mixed concentrate (cassiterite and sulfide) is obtained, and then Flotation of sulfur, the product in the tank enters the rear section and re-elected, and the tin concentrate is obtained; the middle and re-selected middle ore and slime in the previous section enter the lean ore system for full floatation and desulfurization, and then re-selection to produce shale tin concentrate; full flotation of sulfide ore Enter the cyanide-free flotation separation system to produce lead-bismuth mixed concentrate, zinc concentrate and arsenic concentrate. Lead-antimony mixed concentrate, preferably divided jamesonite (treated only with metallurgical method), arsenic pyrite (now used as the heavy media plant weighting agent). The flotation conditions and production indicators of the cyanide-free process of the mine are listed in the table below.
Flotation conditions and production indexes of cyanide-free flotation in Dachangchangpo plant
Project
lime
Ammonium persulfate
Copper sulfate
Ding Huang Yao
Pine oil
Flotation agent dosage / kg·t -1
21.5
2.671
0.243
0.405
0.021
Production index /%
The original ore grade contains Sb 2.34, Pb 3.01, lead-bismuth mixed concentrate contains Sb 20.12, Pb 24.72, tailings contain Sb 0.19, Pb 0.3, recovery Sb is 89.49, Pb is 85.7.

Hoisting Mechanism And Spare Parts

The hoisting mechanism for a Tower Crane typically consists of a combination of a motor, a gearbox, wire ropes, and a hook block. Here is a breakdown of its components and how they work together:

1. Motor: The hoisting motor provides the power needed to lift and lower loads. It is usually an electric motor that generates high torque to handle heavy loads.

2. Gearbox: The motor's rotational motion is transmitted to the hoisting drum through a gearbox. The gearbox helps increase the torque and reduce the speed of the motor, enabling the crane to lift heavy loads at a controlled speed.

3. Hoisting Drum: The hoisting drum is a cylindrical drum around which the wire ropes are wound. It is directly connected to the gearbox and rotates as the motor operates. The drum's size and design determine the amount of Wire Rope it can hold.

4. Wire Ropes:
The wire ropes are wound around the hoisting drum and connected to the hook block. These ropes are made of high-strength steel and have a high load-bearing capacity. Multiple wire ropes are used to distribute the load evenly and ensure stability during lifting operations.

5. Hook Block: The hook block is attached to the lower end of the wire ropes and is responsible for carrying the load. It consists of a pulley system with one or more sheaves, which allows the wire ropes to change direction and support the load securely.

During operation, the motor drives the hoisting drum through the gearbox. As the drum rotates, the wire ropes are wound or unwound, depending on the direction of rotation. This movement raises or lowers the hook block, allowing the crane to lift or lower loads.

The hoisting mechanism is controlled by the crane operator using various controls and switches. Safety features such as limit switches and overload protection systems are also incorporated to prevent accidents and ensure safe lifting operations.

Hoisting Mechanism,Tower Crane Lift Motor,Tower Crane Axial Fans,Tower Crane Hoist Motor, Tower Crane Hoisting Reducer

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