Density machine It is one of the commonly used pieces of equipment in ore dressing plants and can be applied to processes such as dewatering, reagent removal, and concentration. Let’s first understand the concentration principle of a thickener. The working principle of a thickener is to utilize the gravitational force of solid particles themselves to separate the slurry into two parts: a clarified liquid and a high-concentration sediment.

How to improve Density machine The sedimentation effect is key to improving the productivity of thickening machines. We will discuss how to enhance the concentration performance of thickening machines from five different perspectives.

1

Using flocculants to improve concentration efficiency

The particle sizes of pulp vary. The settling velocity of water is related to particle size—lower particle sizes result in slower settling velocities. Some processes require finer grinding stone particle sizes to achieve better separation performance. Therefore, effectively precipitating microscopic particles is crucial for enhancing the efficiency of thickener operations. The use of flocculants can address the challenge of micro-particle precipitation. Flocculants cause particles to collide with one another, forming flocs that increase in volume and accelerate the settling process.

2

The degassing tank affects the concentration effect.

Before the mine enters the dense-phase stage, it must pass through a degassing tank to remove gas bubbles from the mine, preventing foam formation that could impair settling efficiency. Degassing tanks typically work by allowing gas bubbles to rise to the liquid surface, where they expand and burst, releasing the gas. The design of the degassing tank should ensure ample degassing space to remove as much foam as possible. When installing the degassing tank, it’s important to keep the upper edge of the overflow baffle as level as possible. This way, the pulp can flow across the baffle in the form of a thin film, enabling the gas to escape efficiently.

3

The supply section will affect the concentration effect.

The mine can enter the subduction zone via a mine shaft centered around a concentrator, designed to descend from the supply area and directly reach below the liquid surface in the sump through the discharge area. This prevents gases from entering the mine during mining operations while ensuring a uniform and stable inflow into the mine. It also avoids impacting the already settled mine material—such as by adding raw material plates—to the mine bush, thereby preventing “flooding.”

4

The bottom structure affects the concentration effect.

The bottom structure of the intensive mixer also affects sedimentation efficiency. Currently, the most common type of intensive mixer used in ore-dressing plants is the rake-type intensive mixer, which can be classified into center-drive and peripheral-drive types. The primary factor influencing the sedimentation efficiency of the thickener is the inclination angle of the thickener’s bottom surface.

To discharge waterlogged mine tailings from the center of the pond’s bottom, the densifier is designed with a conical shape at the bottom, and a rake-type scraper continuously pushes the mine tailings toward the discharge outlet located at the center of the pond’s bottom. The relatively large inclination angle of the bottom cone helps increase the height of the material compression zone, thereby enhancing the concentration of the mined material.

5

Automatic control systems can affect concentration outcomes.

Density machine The automatic control system includes control devices such as dosing units, rakes, and underflow pumps. Through the automatic control system, it is possible to monitor changes between different floor levels within the thickener, enabling more precise control of thickener operations and improving the settling performance of the concentrator.

The above discussion covered several aspects of how to improve the thickening efficiency of thickeners. We hope this information will be helpful to Guangzhou. Based on actual production and economic needs, it is recommended that you consult with technologically experienced thickener manufacturers to select a thickener that best meets your requirements.